CN111251826A - Passenger cabin priority refrigeration control method for pure electric vehicle thermal management system - Google Patents

Passenger cabin priority refrigeration control method for pure electric vehicle thermal management system Download PDF

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Publication number
CN111251826A
CN111251826A CN202010064162.7A CN202010064162A CN111251826A CN 111251826 A CN111251826 A CN 111251826A CN 202010064162 A CN202010064162 A CN 202010064162A CN 111251826 A CN111251826 A CN 111251826A
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CN
China
Prior art keywords
battery
passenger compartment
cooling
refrigeration
power battery
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Pending
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CN202010064162.7A
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Chinese (zh)
Inventor
付静
朱建
刘祥杰
邱祥宇
范超
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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Priority to CN202010064162.7A priority Critical patent/CN111251826A/en
Publication of CN111251826A publication Critical patent/CN111251826A/en
Pending legal-status Critical Current

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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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [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
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a passenger compartment priority refrigeration control method of a pure electric vehicle thermal management system, which is characterized by comprising the following steps of: the method comprises the steps of 1) entering a simultaneous refrigeration mode, and starting an electric refrigeration system and a battery cooling water loop; 2) entering a passenger compartment priority refrigeration mode, and closing a battery cooling water loop; 3) keeping entering a passenger compartment priority refrigeration mode; 4) exiting the simultaneous cooling mode and restarting the battery cooling water loop; 5) keeping exiting the simultaneous cooling mode; 6) and repeatedly circulating the step 2) and the step 4) until the simultaneous cooling mode is exited. On the premise of ensuring the safety of the power battery, the refrigeration requirement of the passenger compartment is preferentially ensured; the system is switched frequently, thereby ensuring the stability of the system operation.

Description

Passenger cabin priority refrigeration control method for pure electric vehicle thermal management system
Technical Field
The invention relates to the technical field of automobile thermal management, in particular to a passenger compartment priority refrigeration control method of a pure electric automobile thermal management system.
Background
With the increasing attention of countries in the world to environmental and energy problems, pure electric vehicles are widely favored by various social circles, however, the development of the pure electric vehicles is still in the starting stage, a plurality of key problems need to be solved, and the development is limited by the technical maturity of the heat management system of the whole vehicle to a great extent. A set of excellent whole vehicle thermal management system has very obvious contributions to reducing battery energy consumption, increasing endurance mileage and improving reliability and comfort of a whole vehicle.
In the existing pure electric vehicle heat management system, a battery loop and an air conditioning loop share a refrigerant. Because the performance of the power battery has a great relationship with the temperature, the high temperature can aggravate the thermal runaway risk and the safety risk, in order to reduce the safety risk, the refrigerating capacity of the whole vehicle is fully distributed to the battery refrigerating circuit so as to reduce the temperature of the battery, and when the temperature of the battery reaches a safety interval, the requirement of a passenger compartment can be met, so that the refrigerating effect of the passenger compartment is reduced, the refrigerating speed of the passenger compartment is too low, and the comfort of the whole vehicle is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a passenger compartment priority refrigeration control method of a pure electric vehicle thermal management system.
In order to achieve the purpose, the invention provides a passenger compartment priority refrigeration control method of a pure electric vehicle thermal management system, which is characterized by comprising the following steps of:
the pure electric vehicle heat management system comprises an electric refrigeration system and a battery cooling water loop, wherein the electric refrigeration system comprises a cold coal branch for cooling a battery and a cold coal branch for cooling a passenger cabin which are connected in parallel, the cold coal branch for cooling the battery exchanges heat with the battery cooling water loop through a battery cooler, and the battery cooling water loop exchanges heat with a power battery;
the passenger compartment priority refrigeration control method comprises the following steps:
1) entering a simultaneous refrigeration mode, and starting an electric refrigeration system and a battery cooling water loop;
2) when the maximum temperature of the power battery is less than or equal to the critical lower limit value T of the maximum temperature of the power battery1And the average temperature of the power battery is less than or equal to the critical lower limit value T of the average temperature of the power battery2And the return air temperature of the passenger compartment is greater than or equal to the critical upper limit value T of the return air temperature of the passenger compartment3Closing a battery cooling water loop and a cold coal branch for cooling the battery;
4) when the maximum temperature of the power battery is greater than or equal to the maximum temperature critical upper limit value T of the power battery5Or the average temperature of the power battery is greater than or equal to the critical upper limit value T of the average temperature of the power battery6Or the return air temperature of the passenger compartment is less than or equal to the critical lower limit value T of the return air temperature of the passenger compartment7The battery cooling water loop and the cold coal branch for cooling the battery are restarted;
6) and repeating the step 2) and the step 4) until the simultaneous cooling mode is exited.
Further, between the step 2) and the step 4), a step 3) is further included: when the maximum temperature of the power battery is more than T1And is less than T5Or the average temperature of the power battery is more than T2And is less than T6Or the return air temperature of the passenger compartment is more than T3And is less than T7When the battery is in use, the battery cooling water loop and the cold coal branch for cooling the battery are kept closed; between the step 4) and the step 6), the method further comprises the step 5): when the maximum temperature of the power battery is more than T1And is less than T5Or the average temperature of the power battery is more than T2And is less than T6Or the return air temperature of the passenger compartment is more than T3And is less than T7And keeping opening the battery cooling water loop and the cold coal branch for cooling the battery.
Further, in step 3), the conditions for restarting the battery cooling water loop and cooling the battery cold coal branch further include: and the passenger compartment priority refrigeration time is greater than or equal to the passenger compartment priority refrigeration time critical value.
Further, the passenger compartment priority cooling time critical value is positively correlated with the ambient temperature.
Furthermore, the electric refrigeration system comprises a compressor and a condenser which are connected in series, and two ends of the cold coal branch of the cooling battery and two ends of the cold coal branch of the cooling passenger cabin which are connected in parallel are respectively connected with the compressor and the condenser.
Further, the cold coal branch of the cooling battery comprises a battery cooling expansion valve and a battery cooler which are connected in series; the cold coal branch for cooling the passenger compartment comprises a passenger compartment refrigeration expansion valve and an evaporator which are connected in series, the cold coal branch for cooling the passenger compartment exchanges heat with a passenger compartment cooling air branch through the evaporator, and a temperature sensor is arranged at the air return end of the passenger compartment cooling air branch.
Furthermore, the battery cooling water loop comprises a power battery, a water pump and a battery cooler which are connected in series, and cooling water outlets of the power battery and the battery cooler are both provided with temperature sensors.
The pure electric vehicle thermal management system further comprises a thermal management controller and a passenger compartment priority refrigeration timer, wherein a signal input end of the thermal management controller is respectively in communication connection with the temperature sensor and the passenger compartment priority refrigeration timer; and the signal output end of the thermal management controller is respectively in communication connection with the water pump, the battery cooler, the battery cooling expansion valve, the passenger compartment refrigeration expansion valve and the compressor.
The invention has the following beneficial effects:
1. the refrigeration requirement of the passenger compartment is guaranteed preferentially. The invention judges whether the power battery is in a safety zone and the refrigerating requirement of the passenger compartment according to the highest temperature of the power battery, the average temperature of the power battery and the return air temperature of the passenger compartment, and preferentially ensures the refrigerating requirement of the passenger compartment on the premise of ensuring the safety of the power battery.
2. Meanwhile, the switching stability of the refrigeration mode and the passenger compartment priority refrigeration mode is high. When the simultaneous refrigeration mode and the passenger compartment priority refrigeration mode are switched, the critical values of the maximum temperature of the power battery, the average temperature of the power battery and the return air temperature of the passenger compartment are not set to be fixed values, but are in an interval, so that the system is prevented from being frequently switched when each parameter frequently jumps up and down at a single critical value, and the running stability of the system is ensured.
Drawings
FIG. 1 is a schematic diagram of a thermal management system for a passenger compartment and a power battery.
The components in the figures are numbered as follows: the system comprises a thermal management controller 1, a power battery 2, a water pump 3, a battery cooler 4, a battery cooling expansion valve 5, a passenger compartment cooling expansion valve 6, an evaporator 7, a compressor 8, a condenser 9, a passenger compartment 11, a passenger compartment circulating fan 12, a temperature sensor 13 and a passenger compartment priority cooling timer 14.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings, which are included to provide a more clear understanding of the invention, but are not intended to limit the invention.
As shown in fig. 1, a pure electric vehicle thermal management system includes an electric refrigeration system and a battery cooling water loop, the electric refrigeration system includes a compressor 8, a condenser 9 and a cold coal branch for cooling a passenger compartment, which are connected in series, the cold coal branch for cooling the passenger compartment is connected in parallel with the cold coal branch for cooling a battery, and the cold coal branch for cooling the battery exchanges heat with the battery cooling water loop through a battery cooler 4; and a cold coal branch for cooling the passenger compartment exchanges heat with a passenger compartment cooling air branch through the evaporator 7. Thus, the whole system can cool the power battery and the passenger compartment.
In the technical scheme, a cold coal branch for cooling the battery comprises a battery cooling expansion valve 5 and a battery cooler 4 which are connected in series; the battery cooling water loop comprises a power battery 2, a water pump 3 and a battery cooler 4 which are connected in series, cooling water outlets of the power battery 2 and the battery cooler 4 are all provided with a temperature sensor 13, and the power battery 2 is evenly provided with a plurality of temperature sensors 13. Thus, the cooling medium absorbs heat in the battery cooler to raise the temperature, and the cooling water releases heat in the battery cooler to lower the temperature.
The cold coal branch for cooling the passenger compartment comprises a passenger compartment refrigeration expansion valve 6 and an evaporator 7 which are connected in series, the passenger compartment cooling air branch comprises an evaporator 7, a passenger compartment 11 and a passenger compartment circulating fan 12 which are connected in series, and a return air end of the evaporator 7 is provided with a temperature sensor 13. Thus, the air in the passenger compartment is cooled by heat dissipation in the evaporator 7, and the refrigerant absorbs heat in the evaporator to be heated. Therefore, the passenger compartment refrigeration expansion valve and the passenger compartment circulating fan are always in an open state no matter in a simultaneous refrigeration mode of the passenger compartment and the power battery or in a priority refrigeration mode of the passenger compartment.
In the technical scheme, the pure electric vehicle thermal management system further comprises a thermal management controller 1 and a passenger compartment priority refrigeration timer 14, wherein a signal input end of the thermal management controller 1 is respectively in communication connection with a temperature sensor 13 and the passenger compartment priority refrigeration timer 14; the signal output end of the thermal management controller 1 is respectively in communication connection with the water pump 2, the battery cooler 4, the battery cooling expansion valve 5, the passenger compartment refrigeration expansion valve 6, the compressor 8 and the passenger compartment circulating fan 12. Therefore, the thermal management controller judges which refrigeration mode the system is in through the numerical values of the temperature sensors and the passenger compartment priority refrigeration timer, and realizes the switching of different refrigeration modes through the execution element.
A passenger cabin priority refrigeration control method based on the pure electric vehicle thermal management system comprises the following steps:
1) a passenger in the vehicle starts an electric refrigeration button, the temperature of a power battery exceeds a safe range, the system enters a simultaneous refrigeration mode of a passenger compartment and the power battery, a thermal management controller 1 controls a water pump 2, a battery cooler 4, a battery cooling expansion valve 5, a passenger compartment refrigeration expansion valve 6, a compressor 8 and a passenger compartment circulating fan 12 to start and work, an electric refrigeration system and a battery cooling water loop are started, a cold coal branch for cooling the passenger compartment and a cold coal branch for cooling the battery are both started, and the highest temperature of the power battery 2 and the average temperature of the power battery 2 are gradually reduced.
2) When the highest temperature of the power battery 2 is less than or equal to the critical lower limit value T of the highest temperature of the power battery1And the average temperature of the power battery 2 is less than or equal to the average temperature of the power batteryCritical lower limit value T2And the return air temperature of the passenger compartment is greater than or equal to the critical upper limit value T of the return air temperature of the passenger compartment3Battery cooler off temperature T4The heat management controller 1 controls the water pump 2, the battery cooler 4 and the battery cooling expansion valve 5 to close, and closes the battery cooling water loop and the cold coal branch of the cooling battery, so that the system is in a passenger compartment priority refrigeration mode, and the maximum temperature of the power battery 2 and the average temperature of the power battery 2 start to rise.
3) When the maximum temperature of the power battery 2 is larger than the critical lower limit value T of the maximum temperature of the power battery1And is less than the critical upper limit value T of the maximum temperature of the power battery5Or the average temperature of the power battery 2 is greater than the critical lower limit value T of the average temperature of the power battery2And is less than the critical upper limit value T of the average temperature of the power battery6Or the return air temperature of the passenger compartment is greater than the critical upper limit value T of the return air temperature of the passenger compartment3And is less than the critical lower limit value T of the return air temperature of the passenger compartment7In the time, the system is still in the passenger compartment priority refrigeration mode, the battery cooling water loop and the cold coal branch of the cooling battery are kept closed, and the maximum temperature of the power battery 2 and the average temperature of the power battery 2 are further increased.
4) When the highest temperature of the power battery 2 is greater than or equal to the critical upper limit value T of the highest temperature of the power battery5Or the average temperature of the power battery 2 is greater than or equal to the critical upper limit value T of the average temperature of the power battery6Or the return air temperature of the passenger compartment is less than or equal to the critical lower limit value T of the return air temperature of the passenger compartment7And the system exits the passenger compartment priority refrigeration mode, the battery cooling water loop and the cold coal branch for cooling the battery are restarted, and the maximum temperature of the power battery 2 and the average temperature of the power battery 2 start to decrease.
5) When the maximum temperature of the power battery 2 is greater than T1 and less than the critical upper limit value T of the maximum temperature of the power battery5Or the average temperature of the power battery 2 is more than T2 and less than T6, or the passenger compartment return air temperature is more than T3 and less than T7, the battery cooling water loop and the cold coal branch for cooling the battery are kept open, and the maximum temperature of the power battery 2 and the average temperature of the power battery 2 are further reduced.
6) And repeating the step 2) and the step 4) until the passenger in the vehicle selects to quit the simultaneous cooling mode.
In step 3), the conditions for restarting the battery cooling water loop and cooling the cold coal branch of the battery further include: and the passenger compartment priority refrigeration time is greater than or equal to the passenger compartment priority refrigeration time critical value. Wherein the passenger compartment priority refrigeration time critical value is positively correlated with the ambient temperature. Therefore, the condition that the system is in the passenger compartment priority refrigeration mode for a long time and cannot enter the passenger compartment and power battery simultaneous refrigeration mode is avoided, and the temperature of the power battery is preferentially protected to be in a safe region.
According to the passenger compartment priority refrigeration control method based on the pure electric vehicle thermal management system, whether the power battery is in a safety zone or not and the refrigeration requirements of the passenger compartment are judged according to the highest temperature of the power battery, the average temperature of the power battery and the return air temperature of the passenger compartment, and the refrigeration requirements of the passenger compartment are preferentially guaranteed on the premise that the safety of the power battery is guaranteed.
Secondly, when the simultaneous refrigeration mode and the passenger compartment priority refrigeration mode are switched, the critical values of the maximum temperature of the power battery, the average temperature of the power battery and the return air temperature of the passenger compartment are not set to be fixed values, but are in an interval, so that the system is prevented from being frequently switched when each parameter frequently jumps up and down at a single critical value, and the running stability of the system is ensured.

Claims (8)

1. A passenger cabin priority refrigeration control method of a pure electric vehicle thermal management system is characterized by comprising the following steps:
the pure electric vehicle heat management system comprises an electric refrigeration system and a battery cooling water loop, wherein the electric refrigeration system comprises a cold coal branch for cooling a battery and a cold coal branch for cooling a passenger cabin which are connected in parallel, the cold coal branch for cooling the battery exchanges heat with the battery cooling water loop through a battery cooler (4), and the battery cooling water loop exchanges heat and comprises a power battery (2);
the passenger compartment priority refrigeration control method comprises the following steps:
1) entering a simultaneous refrigeration mode, and starting an electric refrigeration system and a battery cooling water loop;
2) when the highest temperature of the power battery (2) is less than or equal to the critical lower limit value T of the highest temperature of the power battery1And the average temperature of the power battery (2) is less than or equal to the critical lower limit value T of the average temperature of the power battery2And the return air temperature of the passenger compartment is greater than or equal to the critical upper limit value T of the return air temperature of the passenger compartment3Closing a battery cooling water loop and a cold coal branch for cooling the battery;
4) when the highest temperature of the power battery (2) is greater than or equal to the critical upper limit value T of the highest temperature of the power battery5Or the average temperature of the power battery (2) is greater than or equal to the critical upper limit value T of the average temperature of the power battery6Or the return air temperature of the passenger compartment is less than or equal to the critical lower limit value T of the return air temperature of the passenger compartment7The battery cooling water loop and the cold coal branch for cooling the battery are restarted;
6) and repeating the step 2) and the step 4) until the simultaneous cooling mode is exited.
2. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 1, characterized by comprising the following steps: between step 2) and step 4), further comprising step 3): when the maximum temperature of the power battery (2) is more than T1And is less than T5Or the average temperature of the power battery (2) is more than T2And is less than T6Or the return air temperature of the passenger compartment is more than T3And is less than T7When the battery is in use, the battery cooling water loop and the cold coal branch for cooling the battery are kept closed; between the step 4) and the step 6), the method further comprises the step 5): when the maximum temperature of the power battery (2) is more than T1And is less than T5Or the average temperature of the power battery (2) is more than T2And is less than T6Or the return air temperature of the passenger compartment is more than T3And is less than T7And keeping opening the battery cooling water loop and the cold coal branch for cooling the battery.
3. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 2, characterized in that: in step 3), the conditions for restarting the battery cooling water loop and cooling the coal cooling branch of the battery further include: and the passenger compartment priority refrigeration time is greater than or equal to the passenger compartment priority refrigeration time critical value.
4. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 3, characterized in that: the passenger compartment priority refrigeration time critical value is positively correlated with the ambient temperature.
5. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 4, characterized in that: the electric refrigeration system comprises a compressor (8) and a condenser (9) which are connected in series, and two ends of a cold coal branch of the cooling battery and two ends of a cold coal branch of the cooling passenger cabin which are connected in parallel are respectively connected with the compressor (8) and the condenser (9).
6. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 5, characterized in that: the cold coal branch of the cooling battery comprises a battery cooling expansion valve (5) and a battery cooler (4) which are connected in series; the cold coal branch for cooling the passenger compartment comprises a passenger compartment refrigeration expansion valve (6) and an evaporator (7) which are connected in series, the cold coal branch for cooling the passenger compartment exchanges heat with a passenger compartment cooling air branch through the evaporator (7), and a temperature sensor (13) is arranged at the air return end of the passenger compartment cooling air branch.
7. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 6, characterized in that: the battery cooling water loop comprises a power battery (2), a water pump (3) and a battery cooler (4) which are connected in series, and cooling water outlets of the power battery (2) and the battery cooler (4) are respectively provided with a temperature sensor (13).
8. The passenger compartment priority refrigeration control method of the pure electric vehicle thermal management system according to claim 7, characterized in that: the pure electric vehicle thermal management system further comprises a thermal management controller (1) and a passenger compartment priority refrigeration timer (14), wherein a signal input end of the thermal management controller (1) is respectively in communication connection with the temperature sensor (13) and the passenger compartment priority refrigeration timer (14); and the signal output end of the thermal management controller (1) is respectively in communication connection with the water pump (2), the battery cooler (4), the battery cooling expansion valve (5), the passenger compartment refrigeration expansion valve (6) and the compressor (8).
CN202010064162.7A 2020-01-20 2020-01-20 Passenger cabin priority refrigeration control method for pure electric vehicle thermal management system Pending CN111251826A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111976419A (en) * 2020-07-06 2020-11-24 惠州市德赛西威汽车电子股份有限公司 Refrigeration method and control system for eliminating temperature disturbance
CN112572235A (en) * 2020-12-14 2021-03-30 东风汽车集团有限公司 Vehicle temperature control method, device and system
CN112622561A (en) * 2020-12-18 2021-04-09 长城汽车股份有限公司 Passenger compartment and battery cooling method and device and vehicle
WO2022115976A1 (en) * 2020-12-03 2022-06-09 浙江吉利控股集团有限公司 Method and apparatus for controlling heat pump air-conditioning system of traveling vehicle, and device and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103612570B (en) * 2013-09-04 2016-03-23 奇瑞新能源汽车技术有限公司 A kind of Pure electric vehicle thermal management control system and control method thereof
CN109435631A (en) * 2018-11-22 2019-03-08 深圳职业技术学院 Automotive air-conditioning system and its control method, automobile
CN109484132A (en) * 2018-12-14 2019-03-19 安徽江淮汽车集团股份有限公司 A kind of control system and method for electric automobile air conditioner refrigeration
CN109599613A (en) * 2017-09-30 2019-04-09 比亚迪股份有限公司 The temperature control method and humidity control system of on-vehicle battery
US20190275858A1 (en) * 2018-03-07 2019-09-12 Honda Motor Co., Ltd. Heat circulation system for vehicle
JP2019182135A (en) * 2018-04-06 2019-10-24 株式会社デンソー Cooling system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103612570B (en) * 2013-09-04 2016-03-23 奇瑞新能源汽车技术有限公司 A kind of Pure electric vehicle thermal management control system and control method thereof
CN109599613A (en) * 2017-09-30 2019-04-09 比亚迪股份有限公司 The temperature control method and humidity control system of on-vehicle battery
US20190275858A1 (en) * 2018-03-07 2019-09-12 Honda Motor Co., Ltd. Heat circulation system for vehicle
JP2019182135A (en) * 2018-04-06 2019-10-24 株式会社デンソー Cooling system
CN109435631A (en) * 2018-11-22 2019-03-08 深圳职业技术学院 Automotive air-conditioning system and its control method, automobile
CN109484132A (en) * 2018-12-14 2019-03-19 安徽江淮汽车集团股份有限公司 A kind of control system and method for electric automobile air conditioner refrigeration

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111976419A (en) * 2020-07-06 2020-11-24 惠州市德赛西威汽车电子股份有限公司 Refrigeration method and control system for eliminating temperature disturbance
CN111976419B (en) * 2020-07-06 2023-08-18 惠州市德赛西威汽车电子股份有限公司 Refrigerating method and control system for eliminating temperature disturbance
WO2022115976A1 (en) * 2020-12-03 2022-06-09 浙江吉利控股集团有限公司 Method and apparatus for controlling heat pump air-conditioning system of traveling vehicle, and device and storage medium
CN112572235A (en) * 2020-12-14 2021-03-30 东风汽车集团有限公司 Vehicle temperature control method, device and system
CN112572235B (en) * 2020-12-14 2022-12-06 东风汽车集团有限公司 Vehicle temperature control method, device and system
CN112622561A (en) * 2020-12-18 2021-04-09 长城汽车股份有限公司 Passenger compartment and battery cooling method and device and vehicle
EP4159498A4 (en) * 2020-12-18 2024-02-21 Great Wall Motor Company Limited Method and apparatus for cooling passenger compartment and battery, and vehicle

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Application publication date: 20200609