CN113352945A - Intelligent CO controlled by functional integrated structure module2Automobile heat management system and method - Google Patents

Intelligent CO controlled by functional integrated structure module2Automobile heat management system and method Download PDF

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CN113352945A
CN113352945A CN202110651086.4A CN202110651086A CN113352945A CN 113352945 A CN113352945 A CN 113352945A CN 202110651086 A CN202110651086 A CN 202110651086A CN 113352945 A CN113352945 A CN 113352945A
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module
water
heat exchanger
management system
temperature
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CN113352945B (en
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曹锋
殷翔
宋昱龙
方健珉
王谙词
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Xian Jiaotong University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling 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 [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning 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 [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention discloses a function integrated structure module control intelligent CO2An automotive thermal management system and method; the system, comprising: front end module, water treatment module, CO2A processing module and an HVAC module; the front-end module comprises a heat exchanger for radiating heat to the environment and is used for radiating heat to the environment; the water treatment module is connected with the front-end module and the CO2The processing module is used for carrying out water-cooling heat dissipation on the battery and the inverter; the HVAC module comprises an in-vehicle temperature and humidity processing component; HVAC module connection CO2A processing module for controlling the temperature and humidity CO in the vehicle2The processing module is used for providing a cold source for the water processing module and the HVAC module. According to the invention, through the modularized arrangement, each module is provided with a standard interface, and the modules are connected through the standard interfaces; the modular arrangement of the invention can facilitate the arrangement and maintenance of each module; realizes refined heat management and runs dynamically all the timeIn the most energy-saving mode, the system reliability is increased, and the NVH management difficulty is reduced.

Description

Intelligent CO controlled by functional integrated structure module2Automobile heat management system and method
Technical Field
The invention belongs toThe field of heat pump air conditioners and heat management of new energy vehicles, in particular to intelligent CO controlled by functional integrated structure module2A vehicle thermal management system and method.
Background
The new energy automobile has become a national strategy for bearing multiple historical missions such as future travel, industrial development, energy safety, air quality improvement and the like, and the industrial development of the new energy automobile also faces the practical problems of fierce market competition, insufficient development power, shortage of technical reserves, incompleteness of an industrial chain and the like.
The freon working medium used by new energy automobile in large amount at present has strong greenhouse effect, and adopts transcritical CO2The circulating heat management system has important significance for emission reduction of strong temperature effect gas, is an important measure for realizing the aims of carbon peak reaching and carbon neutralization in China, and the development of new energy automobiles is green and efficient.
However, the new energy automobile currently faces bottleneck problems of low-temperature endurance attenuation, high-temperature endurance attenuation and the like, and the reason for the bottleneck problems is mainly that the low-temperature heating capacity of the traditional freon working medium is attenuated, the PTC heating still needs to be assisted, and the energy utilization efficiency is low, so that the low-temperature attenuation is caused; in addition, the motor, the battery and the electric control heat management are dispersed, the influence parameters are more, the dependent variable is complex, and the traditional control method is difficult to maintain the fine management of the motor, the battery and the electric control temperature constantly and also difficult to ensure the energy utilization efficiency of the comprehensive system.
In addition, compared with a traditional automobile air conditioning system, a heat management system of the new energy automobile is more complex, the number of parts is more numerous, and the traditional method depends on the dispersed arrangement of the parts at the front end of the automobile, so that the system is complex, the maintenance cost is increased, the reliability of the system is reduced, and the challenge is caused to NVH.
In the face of the problems of low-temperature endurance attenuation, high-temperature endurance attenuation and the like of a new energy automobile and the requirements of fine heat management, working medium environmental protection and the like, a set of complete technical scheme is not provided to solve the problems, and the heat management requirement is partially realized only through a single system layout.
Disclosure of Invention
The invention aims toProvides a functional integrated structure module for controlling intelligent CO2A heat management system for a vehicle and a method thereof are provided to solve at least one of the above technical problems. The invention relates to the field of new energy heat pump air conditioning and heat management, which is oriented to the future, solves the bottlenecks of low-temperature endurance attenuation and high-temperature endurance attenuation, realizes refined heat management, increases the reliability of a system, reduces NVH (noise, vibration and harshness) management difficulty, and assists a set of ground system solutions of 'carbon peak reaching' and 'carbon neutral'.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
intelligent CO controlled by functional integrated structure module2An automotive thermal management system, comprising: front end module, water treatment module, CO2A processing module and an HVAC module;
the front-end module comprises a heat exchanger for radiating heat to the environment and is used for radiating heat to the environment;
the water treatment module is connected with the front-end module and the CO2The processing module is used for carrying out water-cooling heat dissipation on the battery and the inverter;
the HVAC module comprises an in-vehicle temperature and humidity processing component; HVAC module connection CO2The processing module is used for controlling the temperature and the humidity in the vehicle;
CO2the processing module is used for providing a cold source for the water processing module and the HVAC module.
The invention further improves the following steps: it is characterized by comprising a front-end module, a water treatment module and CO2The processing module and the HVAC module are of modular structures;
each modular structure is provided with a standard interface;
front end module, water treatment module, CO2And the processing module is connected with the HVAC module through the standard interface.
The invention further improves the following steps: the front end module comprises CO2A heat exchanger and a water heat exchanger; CO22The heat exchanger and the water heat exchanger share one outdoor fan.
The invention further improves the following steps: CO22The processing module comprises CO2-a water heat exchanger; the water treatment module comprises a battery water cooling loop;the battery water cooling loop comprises a first water tank and a battery water cooling pipeline; CO22The first channel inlet of the water heat exchanger is connected to the first water tank, CO2The outlet of the first channel of the water heat exchanger is connected to the inlet of the first water tank through a water cooling pipeline of the battery;
CO2the second channel of the water heat exchanger is connected to CO2A refrigerant circuit;
the battery water-cooling loop is provided with a first water pump for circulating water in the battery water-cooling loop and CO2The cold source heat exchange that processing module provided is through the battery water cooling pipeline for the battery heat dissipation.
The invention further improves the following steps: the water treatment module is characterized by comprising an inverter water cooling loop; a second water tank, a second water pump and an inverter water cooling pipeline are arranged in the inverter water cooling loop; the inverter water cooling loop is connected with the water heat exchanger;
the second water pump is used for circulating water in the inverter water cooling loop, and the water is radiated through the water heat exchanger to radiate heat for the inverter.
The invention further improves the following steps: the HVAC module includes an HVAC inner heat exchanger;
CO2treating CO in a module2-the second pass of the water heat exchanger is in parallel with the HVAC inner heat exchanger; CO22-a first two-way throttle valve is arranged on a parallel branch of the water heat exchanger; a first bidirectional throttle valve is arranged on a parallel branch of the HVAC internal heat exchanger;
CO2the processing module further comprises a CO2A compressor, a gas-liquid separator;
CO2the outlet of the second channel of the water heat exchanger is connected with CO through a gas-liquid separator2Compressor, CO2The outlet of the compressor is connected with the inlet of the HVAC inner heat exchanger.
The invention further improves the following steps: CO22Compressor, gas-liquid separator, CO2-water heat exchanger arranged at CO2A bottom layer of processing modules; arranged in the form of CO2Compressor in the middle, gas-liquid separator and CO2Water heat exchangers on both sides, CO2Compressor, gas-liquid separator, CO2-water heat exchangerThe connecting lines of the centers of gravity of the triangular plates form a triangle.
Intelligent CO controlled by functional integrated structure module2The control method of the automobile thermal management system comprises the following steps:
the method comprises the following steps: the acquisition function integrated structure module controls the structure sizes of all parts and pipelines of the intelligent CO2 automobile heat management system, and the new energy automobile modularized CO is established based on a one-dimensional simulation method2A thermal management system model;
step two: defining real-time opening X1 of a first bidirectional throttle valve, real-time opening X2 of a second bidirectional throttle valve, real-time rotating speed r of a compressor, rotating speed N1 of an outdoor fan, rotating speed N2 of an indoor fan, vehicle speed V, outdoor environment temperature Tair, vehicle cabin inlet air temperature Ti, vehicle cabin set target temperature Tc and battery thermal management coolant temperature Tcool; respectively taking the values of the delta step length to automatically form arrays;
step three: designing a typical working condition group based on the array obtained in the step two and according to a 10-dimensional Taguchi orthogonal matrix, and modularizing the CO of the new energy automobile in the step one2Operating in the heat management system model to obtain steady-state operation optimal performance data under typical working conditions, and simultaneously, corresponding system refrigerating capacity/heating capacity Q to each group of data1Battery cold energy Q2Recording the power consumption W information of the compressor into a database;
step four: establishing an automatic control logic of a passenger compartment, establishing a control relation between the temperature of the compartment and the rotating speed of a compressor, establishing a control logic between the exhaust pressure and the opening X1 of a first bidirectional throttle valve, controlling the rotating speed of a fan in a gear mode according to the difference value between the target temperature and the actual temperature of the compartment, and establishing a relation between the temperature of the battery coolant and the opening X2 of a second bidirectional throttle valve;
step five: the temperature of the battery coolant was set to 20 ℃, and the target temperatures of the vehicle cabin were set to: refrigeration operating mode 20, 27, three operating modes of 30 ℃ are: the ambient temperature was set as:
Figure BDA0003111197380000041
wherein t is time/s [ [ alpha ] ]]Is a Gaussian function and is an integer function, and runs for 20 hours and three in one periodThe temperature of each target compartment is operated for 60 hours in total; the three set values of the compartment temperature under the heating working condition are as follows: 20. at 25, 30 ℃ and an ambient temperature dynamic function of
Figure BDA0003111197380000042
Figure BDA0003111197380000043
Operating for 60 hours; recording all generated dynamic process quantities in the running process and recording the dynamic process quantities into a database, wherein the recording unit is 60s and one step length;
step six: training the steady-state and dynamic data obtained in the third step and the fifth step through a neuron training model to obtain a control model, wherein the input quantity of the control model is 10 parameters defined in the second step, and the output quantity is passenger compartment refrigerating capacity/heating capacity Q1, battery cooling capacity Q2 and compressor power consumption W;
step seven: under the actual operation condition, the vehicle speed is V, the outdoor environment temperature is Tair, the cabin air inlet temperature is Ti, the cabin set target temperature is Tc, the external parameter of the battery thermal management coolant temperature Tcool is used for solving the control quantity state corresponding to the maximum performance value of Max ((Q1+ Q2)/W) in the control model established in the step six in real time: the real-time opening degree X1 of the first bidirectional throttle valve, the real-time opening degree X2 of the second bidirectional throttle valve, the real-time rotating speed r of the compressor, the rotating speed N1 of the outdoor fan and the rotating speed N2 of the indoor fan; the real-time control function integrated structure module controls the intelligent CO2 automobile thermal management system.
The invention further improves the following steps: further comprising the steps of:
step eight: operating the functional integrated structure module to control the intelligent CO2 automobile thermal management system for 10 days in any environment according to the seventh step, recording operation data by taking 120 seconds as a step length, and recording the data into a database; and repeating the sixth step to obtain the latest control model, and controlling the intelligent CO2 automobile thermal management system controlled by the functional integrated structure module.
The invention further improves the following steps: further comprising the steps of:
step nine: and (4) recording a group of data every 600 seconds according to the control model obtained in the step eight, randomly kicking off the equivalent data of the original database when the data volume reaches 1200, repeating the step six to obtain the latest control model, and controlling the intelligent CO2 automobile thermal management system controlled by the function integrated structure module.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a function integrated structure module control intelligent CO2 automobile heat management system, which comprises a front-end module, a water treatment module, a CO2The processing module and the HVAC module are both arranged in a modularized way, each module is provided with a standard interface, and the modules are connected through the standard interfaces; the modular arrangement of the invention can facilitate the arrangement and the maintenance of each module.
Further, CO2The inlet of the gas-liquid separator of the processing module is provided with a filling port for facilitating CO2Pressure sensing after independent assembly of the processing module.
Further, CO2The processing module takes the maximum diameter of the compressor as the maximum CO2Maximum dimension in thickness direction of the processing module to realize CO2Miniaturization of process modules, CO2The processing module adopts a compressor, a gas-liquid separator and CO2The water heat exchanger is arranged at the bottom layer of the module, various control valves and throttling valves are arranged at the second layer and the third layer of the module, and damping hoses are arranged at the inlet and the outlet of the compressor to realize CO2The whole piece of vibration and noise of the processing module are minimized.
Further, CO2The bottom layer of the processing module is provided with a compressor, a gas-liquid separator and CO2Three parts of a water heat exchanger arranged with the compressor in the middle, gas-liquid separation and CO2The water heat exchangers are located on both sides and ensure the center of gravity of the compressor with the gas-liquid separator and the CO2The centers of gravity of the water heat exchangers are not on a straight line, and the centers of gravity of the three form a triangle; CO22The water heat exchanger is arranged close to the water treatment module.
Further, CO2The second layer valve and the third layer valve of the processing module are in the vertical directionThe gravity centers are ensured to be on the same vertical plane as much as possible.
Further, CO2The gas-liquid separator of the processing module is an integrated component with gas-liquid separation and heat regeneration functions so as to realize CO2Integration and miniaturization of the processing module.
Further, the temperature and pressure sensors are all arranged on the CO2On the processing module, the modularization installation and the maintenance of being convenient for, the quantity and the position of warm-pressing sensor are decided according to actual motorcycle type demand.
The intelligent control system disclosed by the invention realizes the green and high-efficiency heat management of the new energy automobile and the control intelligence of the functional integrated structure module, can effectively solve the bottlenecks of low-temperature endurance attenuation and high-temperature endurance attenuation, realizes the refined heat management, dynamically and always operates in the most energy-saving mode, increases the reliability of the system, reduces the NVH management difficulty, and simultaneously assists the aims of achieving carbon peak reaching and carbon neutralization.
The invention relates to a function integrated structure module control intelligent CO2According to the control method of the automobile thermal management system, the control model continuously updates data in the operation process, so that the intelligent CO2 automobile thermal management system clock controlled by the function integrated structure module can operate in the optimal economic mode.
The invention relates to a function integrated structure module control intelligent CO2The control method of the automobile heat management system has a powerful mode, and in the powerful cooling mode, CO is used for controlling the heat management system2The discharge pressure of the compressor is always controlled to be 12MPa and CO2The rotating speed of the compressor directly establishes a control logic with the temperature of the passenger compartment, the rotating speed of the fan is maximum, the temperature of the battery cooling liquid is controlled to be 20 ℃ by the throttle valve, and other control connections are automatically disconnected.
Drawings
FIG. 1 shows a functional integrated structure module control intelligent CO of the present invention2The structural schematic diagram of the automobile thermal management system.
FIG. 2 shows a functional integrated structure module control intelligent CO of the present invention2CO in automotive thermal management system2Schematic diagram of processing module.
FIG. 3 shows the present inventionIntelligent CO of function integrated structure module control2A schematic diagram of a battery thermal management part in an automobile thermal management system;
FIG. 4 shows a functional integrated structure module controlling an intelligent CO in embodiment 1 of the present invention2The specific structure of the automobile thermal management system is shown schematically.
Wherein: 1. front end module, 2, water treatment module, 3, CO2A processing module, 4, an HVAC module, 5, a battery; 6. compressor, 7, gas-liquid separator, 8, CO2-a water heat exchanger; 9. HVAC inner heat exchanger, 10, first two-way throttle, 11 second two-way throttle; 101. CO22The heat exchanger 102, the water heat exchanger 103, the outdoor fan 41, the heating heat exchanger 42 and the cooling heat exchanger.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example 1
Referring to fig. 1 to 4, the present invention relates to a functional integrated structure module for controlling an intelligent CO2An automotive thermal management system, comprising: front end module 1, water treatment module 2, CO2Processing module 3, HVAC module 4, battery 5, compressor 6, gas-liquid separator 7, CO2A water heat exchanger 8, an HVAC internal heat exchanger 9, a first two-way throttle valve 10 and a second two-way throttle valve 11.
The invention relates to a function integrated structure module control intelligent CO2The automobile thermal management system also comprises a control module; the control module integrates cold and hot control of a passenger cabin, a battery, a motor and electric control refined temperature management control, windshield defrosting and demisting, outdoor heat exchanger defrosting control, a protection module and a measurement module on a set of controller module, and is implanted with an intelligent control algorithm, the intelligent control algorithm mainly aims at dynamic real-time comprehensive energy efficiency maximization, and other modules such as the windshield defrosting and demisting, the outdoor heat exchanger defrosting control, the protection module and the measurement module are integrated by a traditional method and are not repeated here. The invention mainly realizes the green, high-efficiency and function integrated structure module control intelligence of the new energy automobile heat management systemCan be used for energy conversion.
The front-end module 1 comprises a CO2Heat exchangers for dissipating heat to the environment, including the heat exchanger 101 and the water heat exchanger 102; the front end module 1 is arranged at the front end of the vehicle, CO2The heat exchanger 101 and the water heat exchanger 102 share one outdoor fan 103.
The water treatment module 2 comprises water treatment components such as a water tank, a water pump, a waterway valve and the like; preferably, a battery water cooling circuit for battery cooling and an inverter water cooling circuit for inverter cooling are included. The battery water cooling loop comprises a first water tank 22, a first water pump 23 and a battery water cooling pipeline; CO22The first channel inlet of the water heat exchanger 8 is connected to the first water tank 22, CO2The outlet of the first channel of the water heat exchanger 8 is connected to the inlet of the first water tank 22 through a battery water cooling pipeline; the battery water-cooling loop is provided with a first water pump 23 for circulating water in the battery water-cooling loop and radiating heat for the battery 5 through a battery water-cooling pipeline. The inverter water cooling loop comprises a second water tank 24, a second water pump 25 and an inverter water cooling pipeline; the second water tank 24, the water heat exchanger 102 and the inverter water cooling pipeline are connected in sequence to form an inverter water cooling loop; and a second water pump 25 is arranged in the inverter water-cooling loop and used for circulating water in the inverter water-cooling loop and radiating heat for the inverter and the motor through an inverter water-cooling pipeline.
The HVAC module 4 comprises a heating heat exchanger 41, a refrigerating heat exchanger 42, an air duct switching component and other in-vehicle temperature and humidity processing components; inlet of heating heat exchanger 41 is connected with CO2The outlet of the compressor 6 and the outlet of the heating heat exchanger 41 are sequentially connected to the CO2Heat exchanger 101, CO2-CO2Second pass of heat exchanger 21, refrigeration heat exchanger 42, gas-liquid separator 7, CO2- CO2The first channel of the heat exchanger 21 is connected to CO2The inlet of the compressor 6.
CO2The processing module 3 comprises CO2Compressor 6, gas-liquid separator 7, CO2 Water heat exchanger 8, solenoid valve, throttle valve, CO2-CO2CO in heat exchanger 212And circulating the processing part. CO22The outlet of the compressor 6 passes through the heating heat exchanger 41 and CO2Heat exchanger 101, CO2-CO2Second pass of heat exchanger 21, refrigeration heat exchanger 42, gas-liquid separator 7, CO2-CO2The first channel of the heat exchanger 21 is connected to CO2The inlet of the compressor 6.
Front end module 1, water treatment module 2, CO2The processing module 3 and the HVAC module 4 are arranged in a modularized way, and each module is provided with a standard interface, such as an interface Port in the figure; CO in front end module 12 Heat exchanger 101 and CO2The processing modules 3 are connected by adopting a high-pressure hose, and a filling port is arranged at the position of the hose close to the front-end module 1, so that the installation, the maintenance and the filling are convenient;
the water heat exchanger 102 in the front-end module 1 is connected with the water treatment module 2 by a water pipe hose;
CO2CO of the treatment module 32The first channel of the water heat exchanger 8 is connected to the water treatment module 2 via ports 3, 8, and the water treatment module 2 is connected to the battery 5 via its ports 5, 6, forming a water circuit for cooling the battery 5.
Referring to FIG. 3, the HVAC module 4 includes an HVAC inner heat exchanger 9 that assumes the function of a refrigeration evaporator; CO22Treating CO in Module 32A second pass of the water heat exchanger 8 is in parallel with the HVAC inner heat exchanger 9; CO22A first two-way throttle valve 10 is provided in a parallel branch of the water heat exchanger 8; a second bidirectional throttle valve 11 is arranged on a parallel branch of the HVAC internal heat exchanger 9; CO22The second channel outlet of the water heat exchanger 8 passes through the gas-liquid separator 7, CO2-CO2The first channel of the heat exchanger 21 is connected to CO2Inlet of compressor 6, CO2The outlet of the compressor 6 is connected to the inlet of a heat exchanger (for example, fig. 4 in the real-time case, i.e., the inlet of the heating heat exchanger 41) in the HVAC module 4, which performs the function of a heating gas cooler. CO22The processing module 3 is connected with the HVAC module 4 by a high-pressure hose.
Referring to fig. 4, in the present embodiment, the HVAC inner heat exchanger 9 is a refrigeration heat exchanger 42 that performs a function of a refrigeration evaporator in the HVAC.
Example 2
In this embodiment, only the HVAC module 4 includes the undertaking systemA refrigeration heat exchanger 42 for a cold evaporator function. If the HVAC module 4 includes only one refrigeration heat exchanger 42, CO2Treating CO in Module 32The water heat exchanger 8 is then connected in parallel with the refrigeration heat exchanger 42.
Example 3
Intelligent CO of function integrated structure module control2The control method of the automobile heat management system realizes that the flow field is as follows:
CO2treating CO in the module 32 Water heat exchanger 8 in parallel with HVAC internal heat exchanger 9, CO2The water heat exchanger 8 and the HVAC internal heat exchanger 9 branches are provided with a first bidirectional throttle 10 and a second bidirectional throttle 11, respectively, to safeguard the thermal management needs of the battery 5.
In order to prevent control oscillation caused by feedback control delay, measurement error and the like, the functional integrated structure module controls intelligent CO2The automobile heat management system adopts the following model control method, the real-time opening degree of a first bidirectional throttle valve 10 is recorded as X1, the real-time opening degree of a second bidirectional throttle valve is recorded as X2, the real-time rotating speed of a compressor is r, the rotating speed of an outdoor fan is N1, the rotating speed of an indoor fan is N2, the speed of a vehicle is V, the outdoor environment temperature is Tair, the air inlet temperature of a vehicle cabin is Ti, the set target temperature of the vehicle cabin is Tc, and the temperature of battery heat management cooling liquid is Tcool, so that the intelligent global automatic optimization control algorithm is controlled through the following steps, and the intelligent global automatic optimization control algorithm is characterized by also comprising the online self-learning of the algorithm:
the method comprises the following steps: intelligent CO (carbon monoxide) controlled by integrated structure module with acquisition function2The structural dimensions of each part and pipeline of the automobile heat management system are established based on a one-dimensional simulation method to build the new energy automobile modularized CO2A thermal management system model;
step two: the defined 10 parameters are respectively taken as delta step length values to automatically form an array.
Step three: designing a typical working condition group based on the array obtained in the step two and according to a 10-dimensional Taguchi orthogonal matrix, and modularizing the CO of the new energy automobile in the step one2Operating in the heat management system model to obtain steady-state operation optimal performance data under typical working conditions, and simultaneously, corresponding system refrigerating capacity/heating capacity to each group of dataQ1Battery cold energy Q2And recording the power consumption W information of the compressor into a database. The optimal performance of the step is obtained only by considering the change of the exhaust pressure, and other parameters are temporarily ignored and recorded in a database;
step four: automatic control logic of a passenger compartment is established, a control relation is established between the temperature of the passenger compartment and the rotating speed of a compressor, control logic is established between the exhaust pressure and the opening X1 of the first bidirectional throttle valve 10, the rotating speed of a fan is controlled in a gear mode according to the difference value between the target temperature and the actual temperature of the passenger compartment, and a relation is established between the temperature of the battery coolant and the opening X2 of the second bidirectional throttle valve 11. Entering the fifth step after the logic establishment is finished;
step five: the temperature of the battery cooling liquid is set to be 20 ℃, the target temperature of the vehicle cabin is respectively set to be the following refrigeration working conditions: 20. 27 and 30 ℃ and a refrigeration mode: the ambient temperature was set as:
Figure BDA0003111197380000101
wherein t is time/s [ [ alpha ] ]]The operation is a Gaussian function, namely an integer function, one cycle is 20 hours, and the operation of the three target compartment temperatures is 60 hours in total. The three set values of the compartment temperature under the heating working condition are as follows: 20. at 25, 30 ℃ and an ambient temperature dynamic function of
Figure BDA0003111197380000102
Similar to the refrigeration condition, the operation was also performed for 60 hours. All generated dynamic process quantities are recorded in the running process and recorded into a database, and the recording unit is 60s and one step length. In particular, the required control pressure during operation is obtained as the linear difference of the optimal pressure data for the three-step typical condition.
Step six: training the steady-state and dynamic data obtained in the third step and the fifth step through a neuron training model to obtain a control model, wherein the input quantity of the control model is defined by 10 parameters, and the output quantity is passenger compartment refrigerating capacity/heating capacity Q1, battery cooling capacity Q2 and compressor power consumption W; the model training method includes but is not limited to neuron training, Naive Bayes training, linear fitting and other common algorithms.
Step seven: under the actual operation condition, the vehicle speed is V, the outdoor environment temperature is Tair, the cabin air inlet temperature is Ti, the cabin set target temperature is Tc, the external parameter of the battery thermal management coolant temperature Tcool is used for solving the control quantity state corresponding to the maximum performance value of Max ((Q1+ Q2)/W) in the control model established in the step six in real time: the real-time opening degree of the first bidirectional throttle valve 10 is X1, the real-time opening degree of the second bidirectional throttle valve is X2, the real-time rotating speed of the compressor is r, the rotating speed of the outdoor fan is N1 gear, and the rotating speed of the indoor fan is N2 gear; therefore, the automobile thermal management system is controlled in real time, and the optimal performance state under the current working condition is obtained.
Step eight: operating the system and controlling the system in any environment for 10 days according to the step seven preliminarily, recording operation data by taking 120 seconds as a step length, and recording the data into a database; and repeating the step six to obtain the latest control model for control.
Step nine: in the actual operation process, a group of data is recorded every 600 seconds according to the control model obtained in the step eight, when the data volume reaches 1200, equivalent data of the original database are randomly kicked away, the step six is repeated, and the latest control model is obtained, so that the modularized transcritical CO is ensured to be influenced by factors such as system aging and the like2The heat pump air conditioner and the heat management system always run in a global optimal working state.
The invention relates to a function integrated structure module control intelligent CO2The automobile heat management system is divided into an economic mode and a powerful mode, and the control method in the economic mode is that the system is controlled to always run in a globally optimal working state according to the intelligent control method; in a strong mode, CO2The discharge pressure of the compressor 6 is always controlled to 12MPa, CO2The rotating speed of the compressor 6 directly establishes a control logic with the temperature of the passenger compartment, the rotating speed of the fan is maximum, the temperature of the battery cooling liquid is controlled to be 20 ℃ by the throttle valve 2, and other control connections are automatically disconnected.
The invention relates to a function integrated structure module control intelligent CO2In the automobile heat management system, under the powerful cooling mode, when the battery temperature still exceeds 50 ℃, the second bidirectional throttle valve 11, the first bidirectional throttle valve 10 and the exhaust pressure are closedAnd a control relation is directly established, so that the rapid cooling of the battery is guaranteed, and thermal runaway is prevented.
Furthermore, the invention discloses a functional integrated structure module control intelligent CO2The automobile heat management system and the temperature and pressure sensors are all arranged in the CO2On the processing module, the modularization installation and the maintenance of being convenient for, the quantity and the position of warm-pressing sensor are decided according to actual motorcycle type demand.
The invention relates to a function integrated structure module control intelligent CO2Automobile thermal management System, CO2The gas-liquid separator 7 of the processing module is an integrated component with gas-liquid separation and heat regeneration functions so as to realize CO2Integration and miniaturization of the processing module.
The invention relates to a function integrated structure module control intelligent CO2Automobile thermal management System, CO2The inlet position of the gas-liquid separator 7 of the processing module is provided with a filling port for facilitating CO2Pressure sensing after independent assembly of the processing module.
The invention relates to a function integrated structure module control intelligent CO2Automobile thermal management System, CO2The processing module takes the maximum diameter of the compressor as the maximum CO2Maximum dimension in thickness direction of the processing module to realize CO2Miniaturization of process modules, CO2The processing module adopts a compressor 6, a gas-liquid separator 7 and CO2The water heat exchanger 8 is positioned at the bottom layer of the module, various control valves and throttling valves are positioned at the second layer and the third layer of the module, and damping hoses are arranged at the inlet and the outlet of the compressor to realize CO2The whole piece of vibration and noise of the processing module are minimized.
The invention relates to a function integrated structure module control intelligent CO2Automobile thermal management System, CO2 Bottom layer compressor 6, gas-liquid separator 7, CO of processing module2Three components of a water heat exchanger 8 arranged with the compressor 6 in the middle, gas-liquid separation 7 and CO2The water heat exchangers 8 are located on both sides and ensure the center of gravity of the compressor 6 with the gas-liquid separator 7 and the CO2The centers of gravity of the water heat exchanger 8 and the water heat exchanger are not on the same line, and the centers of gravity of the three form a triangle, and simultaneously ensure that CO is absorbed2The water heat exchanger 8 is on the side close to the water treatment module. CO22The second layer of valve parts and the third layer of valve parts of the processing module ensure that the gravity centers are on the same vertical plane as much as possible in the vertical direction.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such changes and modifications.

Claims (10)

1. Intelligent CO controlled by functional integrated structure module2An automotive thermal management system, comprising: a front end module (1), a water treatment module (2), CO2A processing module (3) and an HVAC module (4);
the front-end module (1) comprises a heat exchanger for radiating heat to the environment, and is used for radiating heat to the environment;
the water treatment module (2) is connected with the front end module (1) and CO2The processing module (3) is used for carrying out water-cooling heat dissipation on the battery and the inverter;
the HVAC module (4) comprises an in-vehicle temperature and humidity processing component; HVAC module (4) connected to CO2The processing module (3) is used for controlling the temperature and humidity in the vehicle;
CO2the treatment module (3) is used for providing a cold source for the water treatment module (2) and the HVAC module (4).
2. The functionally integrated structural module controlled intelligent CO of claim 12The automobile heat management system is characterized in that the front end module (1), the water treatment module (2) and CO2The processing module (3) and the HVAC module (4) are of modular structures;
each modular structure is provided with a standard interface;
a front end module (1), a water treatment module (2), CO2The processing module (3) and the HVAC module (4) are connected through the standard interface.
3. Functionally integrated structural module control according to claim 1Intelligent CO production2Automotive thermal management system, characterized in that the front-end module (1) comprises CO2A heat exchanger (101) and a water heat exchanger (102); CO22The heat exchanger (101) and the water heat exchanger (102) share one outdoor fan (103).
4. The functionally integrated structural module controlled intelligent CO2 automotive thermal management system according to claim 3, wherein CO is selected from the group consisting of2The processing module (3) comprises CO2-a water heat exchanger (8); the water treatment module (2) comprises a battery water cooling loop; the battery water cooling loop comprises a first water tank (22) and a battery water cooling pipeline; CO22-the first channel inlet of the water heat exchanger (8) is connected to the first water tank (22), CO2-the outlet of the first channel of the water heat exchanger (8) is connected to the inlet of the first water tank (22) through a battery water cooling line;
CO2-the second channel of the water heat exchanger (8) is connected with CO2A refrigerant circuit;
a first water pump (23) is arranged in the battery water-cooling loop and is used for circulating water in the battery water-cooling loop and CO2The cold source provided by the processing module (3) exchanges heat and radiates heat for the battery (5) through the battery water cooling pipeline.
5. The functionally integrated structural module controlled intelligent CO of claim 32The automobile heat management system is characterized in that the water treatment module (2) comprises an inverter water cooling loop; a second water tank (24), a second water pump (25) and an inverter water cooling pipeline are arranged in the inverter water cooling loop; the inverter water cooling loop is connected with a water heat exchanger (102);
the second water pump (25) is used for circulating water in the inverter water cooling loop, and the water is radiated through the water heat exchanger (102) to radiate heat for the inverter.
6. The functionally integrated structural module of claim 4 controlling an intelligent CO2Automotive thermal management system, characterized in that the HVAC module (4) comprises an HVAC inner heat exchanger (9);
CO2treating CO in the module (3)2-a second passage of the water heat exchanger (8) andthe HVAC internal heat exchangers (9) are connected in parallel; CO22-a first two-way throttle valve (10) is arranged on the parallel branch of the water heat exchanger (21); a parallel branch of the HVAC internal heat exchanger (9) is provided with a first bidirectional throttle valve (11);
CO2the processing module (3) further comprises CO2A compressor (6) and a gas-liquid separator (7);
CO2the second channel outlet of the water heat exchanger (21) is connected with CO through a gas-liquid separator (7)2Compressor (6), CO2The outlet of the compressor (6) is connected with the inlet of the HVAC inner heat exchanger (9).
7. The functionally integrated structural module of claim 6, controlling an intelligent CO2Heat management system for a motor vehicle, characterised in that the CO2Compressor (6), gas-liquid separator (7), CO2-a water heat exchanger (8) is arranged at the CO2A bottom layer of processing modules; arranged in the form of CO2A compressor (6) is arranged in the middle, a gas-liquid separator (7) and CO2-water heat exchangers (8) on both sides, CO2Compressor (6), gas-liquid separator (7), CO2-the line of the centers of gravity of the water heat exchangers (8) forms a triangle.
8. Intelligent CO controlled by functional integrated structure module2The control method of the automobile thermal management system is characterized by comprising the following steps of:
the method comprises the following steps: the acquisition function integrated structure module controls the structure sizes of all parts and pipelines of the intelligent CO2 automobile heat management system, and the new energy automobile modularized CO is established based on a one-dimensional simulation method2A thermal management system model;
step two: defining real-time opening X1 of a first bidirectional throttle valve (10), real-time opening X2 of a second bidirectional throttle valve, real-time rotating speed r of a compressor, rotating speed N1 of an outdoor fan, rotating speed N2 of an indoor fan, vehicle speed V, outdoor environment temperature Tair, vehicle cabin inlet air temperature Ti, vehicle cabin set target temperature Tc and battery thermal management coolant temperature Tcool; respectively taking the values of the delta step length to automatically form arrays;
step three: based on the array obtained in step two, orthogonalizing according to 10-dimensional TaguchiA matrix is designed, a typical working condition group is designed, and the new energy automobile modular CO is obtained in the step one2Operating in the heat management system model to obtain steady-state operation optimal performance data under typical working conditions, and simultaneously, corresponding system refrigerating capacity/heating capacity Q to each group of data1Battery cold energy Q2Recording the power consumption W information of the compressor into a database;
step four: establishing an automatic control logic of a passenger compartment, establishing a control relation between the temperature of the compartment and the rotating speed of a compressor, establishing a control logic between the exhaust pressure and the opening X1 of a first bidirectional throttle valve (10), controlling the rotating speed of a fan in a gear mode according to the difference value between the target temperature and the actual temperature of the compartment, and establishing a relation between the temperature of the battery coolant and the opening X2 of a second bidirectional throttle valve (11);
step five: the temperature of the battery coolant was set to 20 ℃, and the target temperatures of the vehicle cabin were set to: refrigeration operating mode 20, 27, three operating modes of 30 ℃ are: the ambient temperature was set as:
Figure FDA0003111197370000031
wherein t is time/s [ [ alpha ] ]]The operation is a Gaussian function and an integer function, the operation period is 20 hours, and the operation time of the three target compartment temperatures is 60 hours in total; the three set values of the compartment temperature under the heating working condition are as follows: 20. at 25, 30 ℃ and an ambient temperature dynamic function of
Figure FDA0003111197370000032
Figure FDA0003111197370000033
Operating for 60 hours; recording all generated dynamic process quantities in the running process and recording the dynamic process quantities into a database, wherein the recording unit is 60s and one step length;
step six: training the steady-state and dynamic data obtained in the third step and the fifth step through a neuron training model to obtain a control model, wherein the input quantity of the control model is 10 parameters defined in the second step, and the output quantity is passenger compartment refrigerating capacity/heating capacity Q1, battery cooling capacity Q2 and compressor power consumption W;
step (ii) ofSeventhly, the method comprises the following steps: under the actual operation condition, the vehicle speed is V, the outdoor environment temperature is Tair, the cabin air inlet temperature is Ti, the cabin set target temperature is Tc, the external parameter of the battery thermal management coolant temperature Tcool is used for solving the control quantity state corresponding to the maximum performance value of Max ((Q1+ Q2)/W) in the control model established in the step six in real time: the real-time opening degree X1 of the first bidirectional throttle valve, the real-time opening degree X2 of the second bidirectional throttle valve, the real-time rotating speed r of the compressor, the rotating speed N1 of the outdoor fan and the rotating speed N2 of the indoor fan; real-time control function integrated structure module control intelligent CO2An automotive thermal management system.
9. The control method according to claim 8, characterized by further comprising the steps of:
step eight: running a functional integrated structure module to control intelligent CO in any environment according to step seven2The automobile thermal management system records operation data by taking 120 seconds as a step length for 10 days, and records the data into a database; repeating the sixth step to obtain the latest control model, and controlling the intelligent CO for the function integrated structure module2And controlling the automobile thermal management system.
10. The control method according to claim 9, characterized by further comprising the steps of:
step nine: recording a group of data every 600 seconds according to the control model obtained in the step eight, randomly kicking off the equivalent data of the original database when the data volume reaches 1200, repeating the step six to obtain the latest control model, and controlling the intelligent CO for the function integrated structure module2And controlling the automobile thermal management system.
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