CN114714982A - Pure electric vehicle thermal management method and system, readable storage medium and vehicle - Google Patents

Pure electric vehicle thermal management method and system, readable storage medium and vehicle Download PDF

Info

Publication number
CN114714982A
CN114714982A CN202210308601.3A CN202210308601A CN114714982A CN 114714982 A CN114714982 A CN 114714982A CN 202210308601 A CN202210308601 A CN 202210308601A CN 114714982 A CN114714982 A CN 114714982A
Authority
CN
China
Prior art keywords
temperature
battery pack
water pump
motor
request
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210308601.3A
Other languages
Chinese (zh)
Inventor
罗伟
梁涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangling Motors Corp Ltd
Original Assignee
Jiangling Motors Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangling Motors Corp Ltd filed Critical Jiangling Motors Corp Ltd
Priority to CN202210308601.3A priority Critical patent/CN114714982A/en
Publication of CN114714982A publication Critical patent/CN114714982A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B60L58/27—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 heating
    • 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
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • 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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Landscapes

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

Abstract

The invention discloses a pure electric vehicle thermal management method, a system, a readable storage medium and a vehicle, wherein the method comprises the steps of obtaining environment temperature, motor temperature, electric control temperature, inverter temperature, charger temperature, battery cell highest temperature, battery cell lowest temperature, motor cooling water temperature and vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value; and if the current battery pack running mode is smaller than the safety threshold value, controlling the working states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan according to the whole vehicle running mode and the battery pack thermal management request. Under the low temperature condition, the heat generated by the motor in the driving process and the waste heat generated by the OBC in the slow charging process are recycled, the battery pack is heated or insulated, the high-voltage battery pack heater is prevented from being opened for a second time to heat the battery pack, and the purposes of saving power consumption, increasing the endurance mileage and shortening the charging time are achieved.

Description

Pure electric vehicle thermal management method and system, readable storage medium and vehicle
Technical Field
The invention belongs to the technical field of power system analysis, and particularly relates to a pure electric vehicle thermal management method and system, a readable storage medium and a vehicle.
Background
Pure electric vehicles is under the low temperature condition, and battery package charge and discharge performance all can descend, reduces the continuation of the journey mileage simultaneously, and the heat that the vehicle travel in-process motor can produce also can produce the heat by the OBC of slow charging in-process, and this part heat directly scatters and disappears to the external environment in, does not utilize to heat for the battery package, has caused the waste of energy.
The pure electric vehicle continuously runs at a high speed and is quickly charged under the conditions of low temperature and normal temperature, the battery pack needs active cooling when the temperature is too high, the battery pack is cooled by starting a high-pressure high-power compressor at present, the energy consumption of the whole vehicle is high, and the endurance is influenced.
Based on the above situations of the waste of energy of the whole vehicle and the unreasonable utilization, a reasonable control strategy for recycling waste heat of the whole vehicle and cooling energy conservation is needed, so that the purposes of increasing endurance and improving the vehicle using experience of customers are achieved.
Disclosure of Invention
The invention provides a pure electric vehicle thermal management method, a pure electric vehicle thermal management system, a readable storage medium and a pure electric vehicle, which are used for solving the technical problems that the energy consumption of the whole vehicle is high and the endurance is influenced due to the fact that energy recovery cannot be carried out.
The pure electric vehicle thermal management method provided by the embodiment of the invention comprises the following steps: acquiring a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold; if the current battery pack heat management request is smaller than the safety threshold value, the working states of a battery pack water pump, a motor water pump, a four-way reversing valve, a two-position three-way valve, a battery pack heater, a compressor and a fan are controlled according to a finished automobile running mode and a battery pack heat management request, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack heat management request comprises a heating request, a cooling request and no request.
In addition, the pure electric vehicle thermal management method according to the above embodiment of the present invention may further have the following additional technical features:
further, according to whole car running mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, include: according to the quick charging request and the heating request, controlling the battery pack water pump and the battery pack heater to be started, and controlling the motor water pump, the four-way reversing valve, the two-position three-way valve, the compressor and the fan to be closed; according to the quick charging request and the cooling request, the battery pack water pump, the fan and the compressor are controlled to be started, and the motor water pump, the four-way reversing valve, the two-position three-way valve and the battery pack heater are closed.
Further, according to whole car running mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, still include: judging whether the highest temperature of the battery core is within a first preset temperature range or not according to the quick charging request and the non-request; if the highest temperature of the battery core is not within a first preset temperature range, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the highest temperature of the battery cell is within a first preset temperature interval, judging whether the environmental temperature is within a second preset temperature interval; if the environment temperature is within a second preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold value; if the temperature is not less than a first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold, judging whether the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold; if the temperature is smaller than the second temperature threshold value, the battery pack water pump, the motor water pump, the four-way reversing valve and the fan are controlled to be opened, and the two-position three-way valve, the battery pack heater and the compressor are closed.
Further, according to whole car running mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, still include: according to the slow charging request and the cooling request, controlling the battery pack water pump, the compressor and the fan to be started, and controlling the motor water pump, the four-way reversing valve, the two-position three-way valve and the battery pack heater to be closed; according to the slow charging request and the heating request, the battery pack water pump and the battery pack heater are controlled to be started, and the motor water pump, the four-way reversing valve, the two-position three-way valve, the compressor and the fan are closed.
Further, according to whole car running mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, still include: judging whether the lowest temperature of the battery cell is greater than a first temperature threshold value or not according to the slow charging request and the non-request; if the lowest temperature of the battery core is not greater than a first temperature threshold value, judging whether the environmental temperature is within a third preset temperature interval; if the ambient temperature is within a third preset temperature interval, controlling the battery pack water pump, the four-way reversing valve, the battery pack heater, the compressor and the fan to be closed, and controlling the motor water pump and the two-position three-way valve to be opened; if the lowest cell temperature is greater than a first temperature threshold, judging whether the highest cell temperature is less than a third temperature threshold; if the highest temperature of the battery core is smaller than a third temperature threshold value, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the highest temperature of the battery core is not smaller than a third temperature threshold, judging whether the environmental temperature is within a fourth preset temperature range; if the environment temperature is not within a fourth preset temperature interval, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the environment temperature is within a fourth preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold value; if the temperature is not less than the first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold, judging whether the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold; if the temperature is smaller than the second temperature threshold value, the battery pack water pump, the motor water pump, the four-way reversing valve and the fan are controlled to be opened, and the two-position three-way valve, the battery pack heater and the compressor are closed.
Further, according to whole car operational mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, still include: according to the driving request and the cooling request, controlling the battery pack water pump, the motor water pump, the compressor and the fan to be started, and closing the four-way reversing valve, the two-position three-way valve and the battery pack heater; according to the driving request and the heating request, the battery pack water pump, the motor water pump and the battery pack heater are controlled to be started, and the four-way reversing valve, the two-position three-way valve, the compressor and the fan are controlled to be closed.
Further, according to whole car running mode and battery package thermal management request to battery package water pump, motor water pump, four-way reversing valve, two three-way valves, battery package heater, compressor and the operating condition of fan control, still include: judging whether the highest temperature of the battery cell is smaller than a fifth temperature threshold value or not according to the driving request and the non-request; if the highest cell temperature is smaller than a fifth temperature threshold, judging whether the lowest cell temperature is larger than a first temperature threshold; if the lowest temperature of the battery core is not greater than a first temperature threshold value, controlling the battery pack water pump, the four-way reversing valve, the battery pack heater, the compressor and the fan to be started, and controlling the motor water pump and the two-position three-way valve to be closed; if the highest temperature of the battery core is not smaller than a fifth temperature threshold, judging whether the environmental temperature is within a second preset temperature interval; if the environment temperature is within a second preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold value; if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold, judging whether the vehicle speed is larger than a first vehicle speed threshold; if the vehicle speed is not greater than a first vehicle speed threshold value, controlling the battery pack water pump, the motor water pump, the four-way reversing valve and the fan to be started, and controlling the two-position three-way valve, the battery pack heater and the compressor to be closed; if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is not smaller than a second temperature threshold, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold; and if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is not smaller than a first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed.
According to the embodiment of the invention, the pure electric vehicle thermal management system comprises: the judging module is configured to obtain a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judge whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value; and the control module is configured to control the working states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan according to a finished automobile running mode and a battery pack thermal management request if the working states are all smaller than a safety threshold value, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack thermal management request comprises a heating request, a cooling request and no request.
The present invention also provides a computer-readable storage medium, on which a computer program is stored, the computer program comprising program instructions that, when executed by a computer, cause the computer to execute the steps of the pure electric vehicle thermal management method of a hybrid electric vehicle according to any embodiment of the present invention.
The present invention also provides a vehicle, comprising: the thermal management system comprises at least one processor and a memory which is in communication connection with the at least one processor, wherein the memory stores instructions which can be executed by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the steps of the pure electric vehicle thermal management method of any embodiment of the invention.
According to the pure electric vehicle thermal management method, the pure electric vehicle thermal management system, the readable storage medium and the pure electric vehicle, under the low-temperature condition, heat generated by a motor in the driving process and waste heat generated by OBC in the slow charging process are recycled, a battery pack is heated or insulated, the situation that a high-voltage battery pack heater is turned on for the second time to heat the battery pack is avoided, and the purposes of saving electricity consumption, increasing endurance mileage and shortening charging time are achieved; under the conditions of low temperature and normal temperature, the battery pack is cooled by using low-voltage low-power-consumption parts such as a water pump and a fan through a motor radiator, so that the battery pack is prevented from being cooled by starting an electric compressor, and the aim of saving energy is fulfilled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a pure electric vehicle thermal management method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the position definitions of the four-way selector valve and the two-position three-way valve according to one embodiment of the present invention;
fig. 3 is a structural block diagram of a pure electric vehicle thermal management system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of a method for thermal management of a pure electric vehicle according to the present application is shown.
As shown in fig. 1, the pure electric vehicle thermal management method specifically includes the following steps:
step S101, acquiring an environment temperature, a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value;
and S102, if the current battery pack heat management request is smaller than the safety threshold value, controlling the working states of a battery pack water pump, a motor water pump, a four-way reversing valve, a two-position three-way valve, a PTC, a compressor and a fan according to a finished automobile running mode and a battery pack heat management request, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack heat management request comprises a heating request, a cooling request and a no request.
In this embodiment, the four-way selector valve defaults to the closed position: 1 to 2; 3 to 4, open position: 1 to 4; 3 to 2; the default closing position of the two-position three-way valve is as follows: 5 to 6; an opening position: 5 to 7 (as shown in figure 2).
According to the method, under the low-temperature condition, heat generated by a motor in the driving process and waste heat generated by OBC in the slow charging process are recycled, the battery pack is heated or insulated, the situation that a high-voltage battery pack heater is turned on for the second time to heat the battery pack is avoided, and the purposes of saving power consumption, increasing endurance mileage and shortening charging time are achieved; under the conditions of low temperature and normal temperature, the battery pack is cooled by using low-voltage low-power-consumption parts such as a water pump and a fan through a motor radiator, so that the battery pack is prevented from being cooled by starting an electric compressor, and the aim of saving energy is fulfilled.
In a specific embodiment, the pure electric vehicle thermal management method mainly aims at low-temperature and normal-temperature use conditions. Through whole car thermal management control module, gather relevant signal information, control water valve, water pump, electronic fan's operating condition, specific control method can be realized through following scheme:
step 1) a whole vehicle thermal management control module acquires motor temperature, electric control temperature, inverter temperature, charger temperature, cell highest temperature, cell lowest temperature, motor cooling water temperature and vehicle speed;
step 2) collecting the motor temperature, the electric control temperature, the inverter temperature TDCDC and the charger temperature TOBC by a whole vehicle heat management control module; and judging whether the current temperatures of the two are all lower than a safety threshold value by 5 ℃ or more, and if the conditions are met, performing a step 3); if the above condition is not met, returning to the step 2);
and step 3) the whole vehicle thermal management control module judges a whole vehicle running mode, wherein the whole vehicle running mode comprises quick charging, slow charging and driving. If the vehicle quick-charging operation mode is judged, performing step 4); if the vehicle slow charging operation mode is judged, performing step 5); if the running mode of the vehicle is judged, performing step 6);
step 4), the whole vehicle thermal management control module judges a battery pack thermal management request which is divided into heating, cooling and no request; if the battery pack thermal management request is judged to be heating, performing the step 4-a), if the battery pack thermal management request is judged to be cooling, performing the step 4-b), and if the battery pack thermal management request is judged to be non-request, performing the step 4-c);
step 4-a), the whole vehicle thermal management control module controls a battery water-in-water pump to start, a motor water pump to stop, a four-way reversing valve to stop, a two-position three-way valve to stop, a battery pack heater PTC (positive temperature coefficient) to start, a compressor to request to stop and an electronic fan to stop;
step 4-b), the whole vehicle thermal management control module controls a battery water-in-water pump to start, a motor water pump to close, a four-way reversing valve to close, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor start request to open and an electronic fan to close;
step 4-c) if the highest temperature of the battery pack core is reached
Figure BDA0003564043860000071
Performing step 4-c-1); otherwise, if the highest temperature is ∈ [29,31 ]]Then go to step 4-c-2);
step 4-c-1), the whole vehicle heat management control module controls a battery pack water pump to be closed, a motor water pump to be closed, a four-way reversing valve to be closed, a two-position three-way valve to be closed, a battery pack heater PTC to be closed, a compressor to be started to request to be closed, and an electronic fan to be closed;
step 4-c-2) if the ambient temperature
Figure BDA0003564043860000081
Returning to step 4-c), whereas if the ambient temperature e-30, 25]Then step 4-c-3) is performed;
step 4-c-3) if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 15 ℃, performing step 4-c-3-1); otherwise, if the highest temperature of the battery cell-the water temperature r of the motor is less than 15 ℃, performing the step 4-c-4);
step 4-c-3-1) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor to start and request to close, and an electronic fan to close;
step 4-c-4) if the highest temperature TBATMAX of the battery core and the cooling water temperature TWater of the motor are less than 5 ℃, performing step 4-c-4-1), otherwise, returning to the step 4-c-3 if the highest temperature TBATMAX of the battery core and the cooling water temperature TWater of the motor are more than or equal to 5 ℃;
step 5), the whole vehicle thermal management control module judges a battery pack thermal management request which is divided into heating, cooling and no request; if the battery pack thermal management request is judged to be heating, performing the step 5-a), if the battery pack thermal management request is judged to be cooling, performing the step 5-b), and if the battery pack thermal management request is judged to be non-request, performing the step 5-c);
step 5-a), the whole vehicle thermal management control module controls a battery water-in-water pump to start, a motor water pump to stop, a four-way reversing valve to stop, a two-position three-way valve to stop, a battery pack heater PTC (positive temperature coefficient) to start, a compressor to request to stop and an electronic fan to stop;
step 5-b), the whole vehicle thermal management control module controls a battery water-in-water pump to start, a motor water pump to close, a four-way reversing valve to close, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor start request to open and an electronic fan to close;
step 5-c) if the lowest temperature TBATMin of the battery pack core is less than or equal to 15 ℃, performing step 5-c-1); otherwise, if the lowest temperature TBATMin of the battery core of the battery pack is more than 15 ℃, performing the step 5-c-2);
step 5-c-1) if the ambient temperature is E-10, 15]Then step 5-c-1-1) is performed; if the ambient temperature is
Figure BDA0003564043860000082
Returning to step 5-c);
step 5-c-1-1) the whole vehicle heat management control module controls a battery pack water pump to be closed, a motor water pump to be started, a four-way reversing valve to be closed, a two-position three-way valve to be opened, a battery pack heater PTC to be closed, a compressor to be started to request to be closed, and an electronic fan to be closed; performing step 5-c-3);
step 5-c-2) if the highest temperature of the battery cell is more than or equal to 36 ℃, performing step 5-c-2-1); otherwise, if the highest temperature of the battery cell is less than 36 ℃, performing the step 5-c-2-2);
step 5-c-2-1) if the ambient temperature e [ -10,25], performing a step 5-c-2-3); otherwise, performing the step 5-c-2-2);
step 5-c-2-2) the whole vehicle heat management control module controls a battery pack water pump to be closed, a motor water pump to be closed, a four-way reversing valve to be closed, a two-position three-way valve to be opened, a battery pack heater PTC to be closed, a compressor to be started to request to be closed and an electronic fan to be closed; returning to the step 5-c);
step 5-c-2-3) if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 15 ℃, performing step 5-c-2-4); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 15 ℃, performing the step 5-c-2-5);
step 5-c-2-4) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor to start and request to close, and an electronic fan to close; returning to the step 5-c-2-1);
step 5-c-2-5) if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 10 ℃, performing step 5-c-2-6); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 10 ℃, performing the step 5-c-2-7);
step 5-c-2-6) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor to start and request to close, and an electronic fan to stop at a low speed; returning to the step 5-c-2-1);
step 5-c-2-7), if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 5 ℃, performing step 5-c-2-8); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 5 ℃, performing the step 5-c-2-1);
step 5-c-2-8) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor to start and request to close, and an electronic fan high-speed gear; returning to the step 5-c-2-1);
step 5-c-3) cooling water temperature of the motor-lowest temperature of the battery cell is more than or equal to 10 ℃, and then step 5-c-3-1) is carried out; otherwise, returning to the step 5-c-1-1 when the cooling water temperature of the motor-the lowest temperature of the battery core is less than 10 ℃;
step 5-c-3-1) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to start, a battery pack heater PTC to close, a compressor to start to request to close, and an electronic fan to close; performing step 5-c-3-2);
step 5-c-3-2) if the cooling water temperature of the motor and the lowest temperature of the battery cell are less than or equal to 3 ℃, returning to the step 5-c-1-1); otherwise, if the cooling water temperature of the motor and the lowest temperature of the battery cell are more than 3 ℃, returning to the step 5-c-3-1);
step 6), the whole vehicle thermal management control module judges a battery pack thermal management request which is divided into heating, cooling and no request; if the battery pack thermal management request is judged to be heating, performing step 6-a), if the battery pack thermal management request is judged to be cooling, performing step 6-b), and if the battery pack thermal management request is judged to be non-request, performing step 6-c);
step 6-a), the whole vehicle thermal management control module controls a battery water-in-water pump to be started, a motor water pump to be closed, a four-way reversing valve to be closed, a two-position three-way valve to be closed, a battery pack heater PTC (positive temperature coefficient) to be started, a compressor to be started to be requested to be closed, and an electronic fan to be closed;
step 6-b), the whole vehicle thermal management control module controls a battery water-in-water pump to be started, a motor water pump to be closed, a four-way reversing valve to be closed, a two-position three-way valve to be closed, a battery pack heater PTC to be closed, a compressor start request to be started, and an electronic fan to be closed;
step 6-c) if the highest temperature of the battery cell is more than or equal to 39 ℃, performing step 6-c-1); otherwise, if the highest temperature of the battery cell is less than 39 ℃, performing the step 6-c-2);
step 6-c-1) if the ambient temperature E [ -30,25 [ ]]Then step 6-c-1-1) is performed; otherwise if the ambient temperature is
Figure BDA0003564043860000101
Returning to step 6-c);
step 6-c-1-1) if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 5 ℃, performing step 6-c-1-2); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 5 ℃, performing the step 6-c-1-3);
step 6-c-1-2) if the vehicle speed is more than or equal to 50kph, performing step 6-c-1-2-1); otherwise, performing the step 6-c-3;
step 6-c-1-2-1) if the vehicle speed is more than or equal to 80kph, performing step 6-c-4); otherwise, if the vehicle speed is less than 80kph, performing the step 6-c-5);
step 6-c-1-3) if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 10 ℃, performing step 6-c-1-3-1); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 10 ℃, performing the step 6-c-1-3-2);
step 6-c-1-3-1) if the vehicle speed is more than or equal to 50kph, performing step 6-c-4); otherwise, if the vehicle speed is less than 50kph, performing the step 6-c-5);
step 6-c-1-3-2) if the highest temperature of the battery cell and the cooling water temperature of the motor are more than or equal to 15 ℃, performing step 6-c-4); otherwise, if the highest temperature of the battery cell and the cooling water temperature of the motor are less than 15 ℃, performing the step 6-c-1-1);
step 6-c-2) if the lowest temperature of the battery cell is less than or equal to 15 ℃, performing step 6-c-2-1); otherwise, returning to the step 6-c) if the lowest temperature of the battery cell is more than 15 ℃;
step 6-c-2-1) the whole vehicle heat management control module controls a battery pack water pump to be closed, a motor water pump to be started, a four-way reversing valve to be closed, a two-position three-way valve to be opened, a battery pack heater PTC to be closed, a compressor to be started to request to be closed, and an electronic fan to be closed; performing step 6-c-2-2);
step 6-c-2-2) if the cooling water temperature of the motor and the lowest temperature of the battery cell are more than or equal to 10 ℃, performing step 6-c-2-3); otherwise, returning to the step 6-c-2-1);
step 6-c-2-3) the whole vehicle thermal management control module controls a battery pack water pump to be started, a motor water pump is started, a four-way reversing valve is opened, a two-position three-way valve is opened, a battery pack heater PTC is closed, a compressor is requested to be started to be closed, and an electronic fan is closed; performing step 6-c-2);
step 6-c-3) the whole vehicle thermal management control module controls a battery pack water pump to be started, a motor water pump is started, a four-way reversing valve is started, a two-position three-way valve is closed, a battery pack heater PTC is closed, a compressor is started to request to be closed, and an electronic fan is in a high-speed gear; performing step 6-c-6);
step 6-c-4) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor start request to close, and an electronic fan to close; performing step 6-c-6);
step 6-c-5) the whole vehicle heat management control module controls a battery pack water pump to start, a motor water pump to start, a four-way reversing valve to start, a two-position three-way valve to close, a battery pack heater PTC to close, a compressor to start and request to close, and an electronic fan low-speed gear; performing step 6-c-6);
step 6-c-6), if the highest temperature of the battery core is less than or equal to 37 ℃, performing step 6-c-7); otherwise, if the highest temperature of the battery cell is higher than 37 ℃, performing the step 6-c-1);
step 6-c-7) the whole vehicle heat management control module controls a battery pack water pump to be closed, a motor water pump to be closed, a four-way reversing valve to be closed, a two-position three-way valve to be closed, a battery pack heater PTC to be closed, a compressor to be started to request to be closed, and an electronic fan to be closed; step 6-c) is performed.
Referring to fig. 3, a block diagram of a pure electric vehicle thermal management system according to the present application is shown.
As shown in fig. 3, the thermal management system 200 of the pure electric vehicle includes a determining module 210 and a control module 220.
The determining module 210 is configured to obtain an ambient temperature, a motor temperature, an electronic control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature, and a vehicle speed, and determine whether the motor temperature, the electronic control temperature, the inverter temperature, and the charger temperature are all less than a safety threshold; the control module 220 is configured to control the working states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the PTC, the compressor and the fan according to a finished vehicle running mode and a battery pack thermal management request if the working states are all smaller than a safety threshold, wherein the finished vehicle running mode comprises a fast charging mode, a slow charging mode and a driving mode, and the battery pack thermal management request comprises a heating request, a cooling request and no request.
It should be understood that the modules depicted in fig. 3 correspond to various steps in the method described with reference to fig. 1. Thus, the operations and features described above for the method and the corresponding technical effects are also applicable to the modules in fig. 3, and are not described again here.
In other embodiments, an embodiment of the present invention further provides a non-volatile computer storage medium, where the computer storage medium stores computer-executable instructions, and the computer-executable instructions may execute the pure electric vehicle thermal management method in any of the above method embodiments;
as one embodiment, a non-volatile computer storage medium of the present invention stores computer-executable instructions configured to:
acquiring an environment temperature, a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value;
if the current value is less than the safety threshold value, controlling the working states of a battery pack water pump, a motor water pump, a four-way reversing valve, a two-position three-way valve, a PTC (positive temperature coefficient), a compressor and a fan according to a finished automobile running mode and a battery pack thermal management request, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack thermal management request comprises a heating request, a cooling request and no request.
The non-volatile computer-readable storage medium may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the pure electric vehicle thermal management system, and the like. Further, the non-volatile computer-readable storage medium may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the non-transitory computer readable storage medium optionally includes memory located remotely from the processor, which may be connected to the electric vehicle thermal management system over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The embodiment of the invention further provides a computer program product, wherein the computer program product comprises a computer program stored on a non-volatile computer-readable storage medium, and the computer program comprises program instructions, and when the program instructions are executed by a computer, the computer is enabled to execute any one of the pure electric vehicle thermal management methods.
Fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present invention, and as shown in fig. 4, the vehicle includes: one or more processors 310 and a memory 320, one processor 310 being illustrated in fig. 4. The vehicle of the pure electric vehicle thermal management method can further comprise the following steps: an input device 330 and an output device 330. The processor 310, the memory 320, the input device 330, and the output device 330 may be connected by a bus or other means, as exemplified by the bus connection in fig. 4. The memory 320 is a non-volatile computer-readable storage medium as described above. The processor 310 executes various functional applications and data processing of the server by executing the nonvolatile software programs, instructions and modules stored in the memory 320, so as to implement the thermal management method of the pure electric vehicle according to the embodiment. Input device 330 may receive entered numeric or character information and generate key signal inputs related to user settings and functional control of the electric vehicle thermal management system. The output device 330 may include a display device such as a display screen.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided in the embodiment of the present invention.
As an embodiment, a vehicle includes: at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to:
acquiring an environment temperature, a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value;
if the current battery pack heat management request is smaller than the safety threshold value, the working states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the PTC, the compressor and the fan are controlled according to a finished automobile running mode and a battery pack heat management request, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack heat management request comprises a heating request, a cooling request and no request.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A pure electric vehicle thermal management method is characterized by comprising the following steps:
acquiring a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judging whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold;
if the current battery pack heat management request is smaller than the safety threshold value, the working states of a battery pack water pump, a motor water pump, a four-way reversing valve, a two-position three-way valve, a battery pack heater, a compressor and a fan are controlled according to a finished automobile running mode and a battery pack heat management request, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack heat management request comprises a heating request, a cooling request and no request.
2. The pure electric vehicle thermal management method according to claim 1, wherein the controlling of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan according to the vehicle running mode and the battery pack thermal management request comprises:
according to the quick charging request and the heating request, controlling the battery pack water pump and the battery pack heater to be started, and controlling the motor water pump, the four-way reversing valve, the two-position three-way valve, the compressor and the fan to be closed;
according to the quick charging request and the cooling request, the battery pack water pump, the fan and the compressor are controlled to be started, and the motor water pump, the four-way reversing valve, the two-position three-way valve and the battery pack heater are closed.
3. The pure electric vehicle thermal management method according to claim 1, wherein the control of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan according to the vehicle running mode and the battery pack thermal management request further comprises:
judging whether the highest temperature of the battery cell is within a first preset temperature range or not according to the quick charging request and the non-request;
if the highest temperature of the battery core is not within a first preset temperature range, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed;
if the highest temperature of the battery cell is within a first preset temperature interval, judging whether the environmental temperature is within a second preset temperature interval;
if the environment temperature is within a second preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold value;
if the temperature is not less than the first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold, judging whether the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold;
if the temperature is smaller than the second temperature threshold value, the battery pack water pump, the motor water pump, the four-way reversing valve and the fan are controlled to be opened, and the two-position three-way valve, the battery pack heater and the compressor are closed.
4. The pure electric vehicle thermal management method according to claim 1, wherein the control of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan is performed according to a finished vehicle operating mode and a battery pack thermal management request, and further comprising:
according to the slow charging request and the cooling request, controlling the battery pack water pump, the compressor and the fan to be started, and controlling the motor water pump, the four-way reversing valve, the two-position three-way valve and the battery pack heater to be closed;
according to the slow charging request and the heating request, the battery pack water pump and the battery pack heater are controlled to be started, and the motor water pump, the four-way reversing valve, the two-position three-way valve, the compressor and the fan are closed.
5. The pure electric vehicle thermal management method according to claim 1, wherein the control of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan according to the vehicle running mode and the battery pack thermal management request further comprises:
judging whether the lowest temperature of the battery cell is greater than a first temperature threshold value or not according to the slow charging request and the non-request;
if the lowest temperature of the battery core is not greater than the first temperature threshold, judging whether the environmental temperature is within a third preset temperature interval;
if the ambient temperature is within a third preset temperature interval, controlling the battery pack water pump, the four-way reversing valve, the battery pack heater, the compressor and the fan to be closed, and controlling the motor water pump and the two-position three-way valve to be opened;
if the lowest cell temperature is greater than a first temperature threshold, judging whether the highest cell temperature is less than a third temperature threshold;
if the highest temperature of the battery core is smaller than a third temperature threshold value, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed;
if the highest temperature of the battery core is not smaller than a third temperature threshold, judging whether the environmental temperature is within a fourth preset temperature range;
if the environment temperature is not within a fourth preset temperature interval, controlling the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the environment temperature is within a fourth preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold value;
if the temperature is not less than the first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed; if the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold, judging whether the difference value of the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold;
if the temperature is smaller than the second temperature threshold value, the battery pack water pump, the motor water pump, the four-way reversing valve and the fan are controlled to be opened, and the two-position three-way valve, the battery pack heater and the compressor are closed.
6. The pure electric vehicle thermal management method according to claim 1, wherein the control of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan according to the vehicle running mode and the battery pack thermal management request further comprises:
according to the driving request and the cooling request, controlling the battery pack water pump, the motor water pump, the compressor and the fan to be started, and closing the four-way reversing valve, the two-position three-way valve and the battery pack heater;
according to the driving request and the heating request, the battery pack water pump, the motor water pump and the battery pack heater are controlled to be started, and the four-way reversing valve, the two-position three-way valve, the compressor and the fan are closed.
7. The pure electric vehicle thermal management method according to claim 1, wherein the control of the operating states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor, and the fan according to the vehicle running mode and the battery pack thermal management request further comprises:
judging whether the highest temperature of the battery core is smaller than a fifth temperature threshold value or not according to the driving request and the non-request;
if the highest cell temperature is smaller than a fifth temperature threshold, judging whether the lowest cell temperature is larger than a first temperature threshold;
if the lowest temperature of the battery core is not greater than a first temperature threshold value, controlling the battery pack water pump, the four-way reversing valve, the battery pack heater, the compressor and the fan to be started, and controlling the motor water pump and the two-position three-way valve to be closed;
if the highest temperature of the battery core is not smaller than a fifth temperature threshold, judging whether the temperature is within a second preset temperature range;
if the environment temperature is within a second preset temperature range, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold value;
if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a second temperature threshold, judging whether the vehicle speed is larger than a first vehicle speed threshold;
if the vehicle speed is not greater than a first vehicle speed threshold value, controlling the battery pack water pump, the motor water pump, the four-way reversing valve and the fan to be started, and controlling the two-position three-way valve, the battery pack heater and the compressor to be closed;
if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is not smaller than a second temperature threshold, judging whether the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is smaller than a first temperature threshold;
and if the difference value between the highest temperature of the battery core and the cooling water temperature of the motor is not smaller than a first temperature threshold value, controlling the battery pack water pump, the motor water pump and the four-way reversing valve to be opened, and controlling the two-position three-way valve, the battery pack heater, the compressor and the fan to be closed.
8. A pure electric vehicles thermal management system, characterized by, includes:
the judging module is configured to obtain a motor temperature, an electric control temperature, an inverter temperature, a charger temperature, a cell highest temperature, a cell lowest temperature, a motor cooling water temperature and a vehicle speed, and judge whether the motor temperature, the electric control temperature, the inverter temperature and the charger temperature are all smaller than a safety threshold value;
and the control module is configured to control the working states of the battery pack water pump, the motor water pump, the four-way reversing valve, the two-position three-way valve, the battery pack heater, the compressor and the fan according to a finished automobile running mode and a battery pack thermal management request if the working states are all smaller than a safety threshold value, wherein the finished automobile running mode comprises a quick charging mode, a slow charging mode and a driving mode, and the battery pack thermal management request comprises a heating request, a cooling request and no request.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1 to 7.
10. A vehicle, characterized by comprising: at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any of claims 1 to 7.
CN202210308601.3A 2022-03-25 2022-03-25 Pure electric vehicle thermal management method and system, readable storage medium and vehicle Pending CN114714982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210308601.3A CN114714982A (en) 2022-03-25 2022-03-25 Pure electric vehicle thermal management method and system, readable storage medium and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210308601.3A CN114714982A (en) 2022-03-25 2022-03-25 Pure electric vehicle thermal management method and system, readable storage medium and vehicle

Publications (1)

Publication Number Publication Date
CN114714982A true CN114714982A (en) 2022-07-08

Family

ID=82238955

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210308601.3A Pending CN114714982A (en) 2022-03-25 2022-03-25 Pure electric vehicle thermal management method and system, readable storage medium and vehicle

Country Status (1)

Country Link
CN (1) CN114714982A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130030622A1 (en) * 2011-07-27 2013-01-31 Hyundai Motor Company System and method for managing waste heat of electric vehicle
DE102017125170A1 (en) * 2017-10-26 2019-05-02 Borgward Trademark Holdings Gmbh WARM-MANAGEMENT SYSTEM FOR AN ELECTRIC VEHICLE AND ELECTRIC VEHICLE
CN109849619A (en) * 2019-03-27 2019-06-07 东风汽车集团有限公司 Thermal management system of electric automobile and its control method
CN111016737A (en) * 2019-12-31 2020-04-17 东风汽车集团有限公司 Electric automobile thermal management system, control method and electric automobile
CN213199395U (en) * 2020-03-26 2021-05-14 西安真铎科技有限公司 Composite heat management device for electric vehicle
CN113479047A (en) * 2021-07-30 2021-10-08 睿驰电装(大连)电动系统有限公司 Heat management system and new energy automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130030622A1 (en) * 2011-07-27 2013-01-31 Hyundai Motor Company System and method for managing waste heat of electric vehicle
DE102017125170A1 (en) * 2017-10-26 2019-05-02 Borgward Trademark Holdings Gmbh WARM-MANAGEMENT SYSTEM FOR AN ELECTRIC VEHICLE AND ELECTRIC VEHICLE
CN109849619A (en) * 2019-03-27 2019-06-07 东风汽车集团有限公司 Thermal management system of electric automobile and its control method
CN111016737A (en) * 2019-12-31 2020-04-17 东风汽车集团有限公司 Electric automobile thermal management system, control method and electric automobile
CN213199395U (en) * 2020-03-26 2021-05-14 西安真铎科技有限公司 Composite heat management device for electric vehicle
CN113479047A (en) * 2021-07-30 2021-10-08 睿驰电装(大连)电动系统有限公司 Heat management system and new energy automobile

Similar Documents

Publication Publication Date Title
CN105730263B (en) The control system of motor vehicle driven by mixed power
US20130249468A1 (en) Battery management system for restricted idle vehicles
CN102555812A (en) Energy control system and energy control method of electric automobile
CN111959253A (en) Cooling control method and system and electric automobile
CN103182945A (en) Controller for vehicle and vehicle including the controller
KR20120050871A (en) Method for controlling air flap applying temperature of power electronics component and refrigerant pressure
KR20230106117A (en) Electric vehicle control system, control method and computer readable storage medium
CN112060925A (en) Whole vehicle control method and system of extended range vehicle
CN114771435B (en) Vehicle mode control method and device, vehicle and storage medium
CN115366743A (en) Heating method and device of power battery, electronic equipment, system and storage medium
CN114714982A (en) Pure electric vehicle thermal management method and system, readable storage medium and vehicle
CN112421149A (en) Temperature control method of power battery and vehicle control unit
US20230382269A1 (en) Method for Battery Conditioning of Vehicle
CN104999885B (en) The control method and device of power
CN114714925A (en) Control method, device and system of range extender
CN114750571A (en) Vehicle thermal management control method, device, equipment and storage medium
CN214295476U (en) Braking energy catcher for hydrogen fuel cell automobile
CN114475360A (en) Electric vehicle motor cooling liquid recovery control method, electronic equipment and system
CN112721569A (en) Braking energy catcher for improving heating of hydrogen fuel cell automobile and heating method thereof
CN216033793U (en) Pure electric driving system of road roller and road roller
CN112793385B (en) Brake energy catcher for hydrogen fuel cell automobile and control method thereof
CN117207849B (en) Active heating control method for electric automobile, storage medium and electronic equipment
CN115583163B (en) Energy management method and device for range-extended vehicle at low temperature
CN116176207A (en) Control method of whole fuel cell vehicle thermal management system and vehicle
CN115593276A (en) Battery heating control method and device and vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination