CN115503554A - Electric vehicle intelligent battery thermal management control method and system - Google Patents

Electric vehicle intelligent battery thermal management control method and system Download PDF

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Publication number
CN115503554A
CN115503554A CN202210953027.7A CN202210953027A CN115503554A CN 115503554 A CN115503554 A CN 115503554A CN 202210953027 A CN202210953027 A CN 202210953027A CN 115503554 A CN115503554 A CN 115503554A
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battery
preset
mode
thermal management
temperature
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李涛
于振红
王扬
刘振勇
黄敏
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Lantu Automobile Technology Co Ltd
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Lantu Automobile Technology Co Ltd
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    • 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
    • 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
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a thermal management control method and system for an intelligent battery of an electric automobile. The method comprises the following steps: acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile; judging whether the automobile is located in the north or the south according to the geographical latitude of the automobile; judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; and respectively and correspondingly executing different battery heat management cooling strategies or different battery heat management heating strategies according to the local environment temperature and the battery charge state, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table based on the position of the automobile and the battery heat management mode. Therefore, cooling or heating strategies in different modes can be intelligently matched according to the geographic position of the vehicle, the local environment temperature, the vehicle battery temperature and the battery charge state, the driving experience is improved, the vehicle energy consumption is optimized, and the service life of the battery is prolonged.

Description

Electric vehicle intelligent battery thermal management control method and system
Technical Field
The invention belongs to the technical field of battery thermal management, and particularly relates to an intelligent battery thermal management control method and system for an electric automobile.
Background
The electric vehicles comprise pure electric vehicles, plug-in hybrid electric vehicles, extended range electric vehicles and the like; the electric automobile runs in a pure electric mode, and the battery life safety and energy consumption need to be considered while the abundant power performance requirements are met. The service life of the battery can be directly influenced by the pure electric work of the electric automobile in a high-temperature environment for a long time, and higher challenges are provided for the energy consumption of the whole automobile. The electric automobile works purely electrically in a low-temperature environment, the driving economy is more sensitive, and the energy consumption index directly influences the pure electric endurance of the automobile.
The traditional battery heat management control strategy is simple, the south-north position of a vehicle, the local air temperature condition and the current state of charge (SOC) of the vehicle are not considered, the battery heat management strategy is simple and rough once the vehicle is switched, the available power of the battery is excessive at low temperature, the heat management energy consumption is increased, and the endurance mileage of the vehicle is seriously shortened. In addition, the cycle life of the battery may be seriously reduced on the premise that the vehicle in the south operates in a high-temperature environment for a long time and the vehicle in the north keeps consistent battery thermal management control strategies.
Disclosure of Invention
The invention provides an intelligent battery thermal management control method and system for an electric automobile, which intelligently match cooling or heating strategies in different modes according to the geographical position of a vehicle, the local environment temperature, the vehicle battery temperature and the battery charge state, so that the driving experience is improved, the vehicle energy consumption is optimized, and the service life of a battery is prolonged.
In a first aspect, the invention provides a thermal management control method for an intelligent battery of an electric vehicle, which comprises the following steps:
acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile;
judging whether the position of the automobile is north or south according to the geographical latitude of the automobile;
judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery;
and respectively and correspondingly executing different battery heat management cooling strategies or different battery heat management heating strategies based on the position of the automobile and the battery heat management mode, and according to the local environment temperature and the battery state of charge, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table.
In some embodiments, the step of determining that the position of the automobile is north or south according to the geographic latitude of the vehicle specifically includes the following steps:
when the geographic latitude of the vehicle is detected to be larger than a preset reference latitude, judging that the position of the vehicle is north;
and when the geographic latitude of the vehicle is detected to be smaller than the preset reference latitude, judging that the position of the automobile is south.
In some embodiments, the step of determining, according to the temperature of the vehicle battery, whether the battery thermal management mode enters the cooling mode or the heating mode includes the following steps:
when the temperature of the vehicle battery is detected to be matched with a preset battery reference high temperature, judging that a battery thermal management mode enters a cooling mode;
and when the temperature of the vehicle battery is detected to be matched with the preset battery reference low temperature, judging that the battery thermal management mode enters a heating mode.
In some embodiments, the "when the vehicle battery temperature is detected to match a preset battery reference high temperature, determining that the battery thermal management mode enters a cooling mode; the method comprises the following steps of presetting a cooling mode threshold mapping table according to the local environment temperature and the battery charge state and executing different battery thermal management cooling strategies based on the position of an automobile and the battery thermal management mode, wherein the steps specifically comprise the following steps:
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is higher than a preset north reference battery charge value of the cooling mode, and a first battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is lower than a preset north reference battery charge value of the cooling mode, and a second battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than the preset north environment reference high temperature, the battery charge state is lower than the preset north reference battery charge value of the cooling mode, and a third battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset north environment reference high temperature, the battery charge state is larger than a preset north reference battery charge value of the cooling mode, and a fourth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than the preset south environment reference high temperature, the battery charge state is higher than the preset south reference battery charge value of the cooling mode, and a fifth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset south environment reference high temperature, the battery state of charge is lower than a preset south reference battery charge value of the cooling mode, and a sixth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset south environment reference high temperature, the battery state of charge is lower than a preset south reference battery charge value of the cooling mode, and a seventh battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
and when the position of the automobile is judged to be south, the battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than the preset southern environment reference high temperature, the battery state of charge is higher than the preset southern reference battery charge value in the cooling mode, and an eighth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table.
In some embodiments, when it is detected that the vehicle battery temperature matches a preset battery reference low temperature, it is determined that the battery thermal management mode enters a heating mode; the method comprises the following steps of presetting a heating mode threshold mapping table according to the local environment temperature and the battery state of charge and based on the position of an automobile and the battery heat management mode, and executing different battery heat management heating strategies, wherein the method specifically comprises the following steps:
when the position of the automobile is judged to be in the north, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than the preset north environment reference low temperature, the battery charge state is larger than the preset north reference battery charge value in the heating mode, and a first battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset north environment reference low temperature, the battery charge state is lower than the preset north reference battery charge value of the heating mode, and a second battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset north environment reference low temperature, the battery charge state is lower than the preset north reference battery charge value of the heating mode, and a third battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset north environment reference low temperature, the battery charge state is higher than the preset north reference battery charge value in the heating mode, and a fourth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset south environment reference low temperature, the battery charge state is higher than the preset south reference battery charge value in the heating mode, and a fifth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery heat management mode enters a heating mode, the local environment temperature is detected to be higher than a preset south environment reference low temperature, the battery charge state is lower than a preset south reference battery charge value in the heating mode, and a sixth battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than a preset south environment reference low temperature, the battery charge state is lower than a preset south reference battery charge value in the heating mode, and a seventh battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
and when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset south environment reference low temperature, the battery charge state is greater than the preset south reference battery charge value in the heating mode, and an eighth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table.
In some embodiments, the step of "battery thermal management cooling policy" specifically includes the following steps:
when the current temperature of the battery is detected to be greater than or equal to a first preset entering temperature threshold and smaller than a second preset entering temperature threshold, controlling the highest temperature of the battery to be smaller than or equal to a first preset exiting temperature threshold, and setting first cooling liquid target inlet information;
when the current temperature of the battery is detected to be greater than or equal to a second preset entry temperature threshold and smaller than a third preset entry temperature threshold, controlling the highest temperature of the battery to be less than or equal to a second preset exit temperature threshold, and setting second coolant target inlet information;
and when the current temperature of the battery is detected to be more than or equal to a third preset entering temperature threshold, controlling the highest temperature of the battery to be less than or equal to a third preset exiting temperature threshold, and setting third cooling liquid target inlet information.
In some embodiments, the step of "battery thermal management heating policy" specifically includes the following steps:
when the current temperature of the battery is detected to be greater than or equal to a fifth preset entry temperature threshold and smaller than a fourth preset entry temperature threshold, controlling the lowest temperature of the battery to be greater than or equal to a fourth preset exit temperature threshold, and setting fourth cooling liquid target inlet information;
and when the current temperature of the battery is detected to be lower than a fifth preset entry temperature threshold, controlling the lowest temperature of the battery to be higher than or equal to a fifth preset exit temperature threshold, and setting fifth cooling liquid target inlet information.
In some embodiments, before the step of "based on a location of an automobile and the battery thermal management mode, and according to the local environment temperature and the battery state of charge, and a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table, respectively and correspondingly executing different battery thermal management cooling strategies or different battery thermal management heating strategies", the method specifically includes the following steps:
judging the driving habit type of a driver;
when the driving habit type is judged to be an aggressive type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode is matched;
when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched;
and when the driving habit type is judged to be the economic type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
In a second aspect, the present invention provides an intelligent battery thermal management control system for an electric vehicle, including:
the vehicle information acquisition module is used for acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile;
the geographic position judging module is in communication connection with the vehicle information acquiring module and is used for judging whether the position of the automobile is north or south according to the geographic latitude of the automobile;
the mode judging module is in communication connection with the vehicle information acquiring module and is used for judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; and the number of the first and second groups,
and the cooling and heating strategy module is in communication connection with the vehicle information acquisition module, the geographic position judgment module and the mode judgment module, and is used for correspondingly executing different battery heat management cooling strategies or different battery heat management heating strategies respectively according to the local environment temperature and the battery charge state, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table based on the position of the automobile and the battery heat management mode.
In some embodiments, the system further comprises a driving habit type module, wherein the driving habit type module is in communication connection with the cooling and heating strategy module and is used for judging the driving habit type of a driver; when the driving habit type is judged to be an aggressive type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode; when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched; and when the driving habit type is judged to be the economy type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
The technical scheme provided by the invention has the beneficial effects that:
firstly, acquiring the vehicle geographic latitude, the local environment temperature and the vehicle battery temperature of an automobile; judging whether the position of the automobile is north or south according to the geographical latitude of the automobile; judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; finally, based on the position of the automobile and the battery thermal management mode, and according to the state of charge of the battery, a preset cooling mode threshold mapping table and a preset heating mode threshold mapping table, different battery thermal management cooling strategies and different battery thermal management heating strategies are correspondingly executed respectively; therefore, the geographical latitude of the vehicle of the automobile is monitored through the big data platform, the change of the environmental temperature of the geographical position of the vehicle is judged, and meanwhile, different battery thermal management cooling strategies or different battery thermal management heating strategies are matched and executed in combination with the consideration of the State of Charge (SOC), so that the working efficiency of the battery is improved, the abundant dynamic property of the vehicle is ensured, the energy consumption is greatly reduced, and the service life of the battery core is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating steps of a thermal management control method for an intelligent battery of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of eight battery thermal management cooling strategies according to another embodiment of the present invention;
FIG. 3 is a flowchart illustrating steps of eight battery thermal management heating strategies according to one embodiment of the present invention;
FIG. 4 is a flowchart illustrating steps for three levels of a battery thermal management cooling strategy according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating steps for two levels of a battery thermal management heating strategy according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intelligent battery thermal management control system of an electric vehicle according to an embodiment of the present invention.
Description of the drawings:
100. an intelligent battery thermal management control system of the electric automobile; 110. a vehicle information acquisition module; 120. a geographic position judgment module; 130. a mode judging module; 140. a cooling and heating strategy module; 150. and a driving habit type module.
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the specific embodiments, it will be understood that they are not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein may be implemented by any functional block or functional arrangement, and that any functional block or functional arrangement may be implemented as a physical entity or a logical entity, or a combination of both.
In order that those skilled in the art will better understand the invention, further details are provided below in conjunction with the accompanying drawings and the detailed description of the invention.
Note that: the example to be described next is only a specific example, and does not limit the embodiments of the present invention necessarily to the following specific steps, values, conditions, data, orders, and the like. Those skilled in the art can, upon reading this specification, utilize the concepts of the present invention to construct more embodiments than those specifically described herein.
The invention provides a perception fusion-based automobile window self-adaptive lifting method and system, which solve the problems of environmental pollution in an automobile and poor riding experience caused by unclosed or incompletely closed windows due to severe weather during outdoor parking of the automobile, and improve the intelligent degree and comfort effect of the automobile.
Specifically, as shown in fig. 1, the invention provides a thermal management control method for an intelligent battery of an electric vehicle, which comprises the following steps:
s100, acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile;
s200, judging whether the position of the automobile is the north or the south according to the geographical latitude of the automobile;
s300, judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery;
and S400, based on the position of the automobile and the battery thermal management mode, presetting a cooling mode threshold mapping table or a heating mode threshold mapping table according to the local environment temperature and the battery state of charge, and respectively and correspondingly executing different battery thermal management cooling strategies or different battery thermal management heating strategies.
Specifically, in the embodiment, because the traditional battery thermal management control strategy is simple, the south-north position of the vehicle, the local air temperature condition and the current state of charge (SOC) of the vehicle are not considered, and the battery thermal management strategy is simple and rough, the available power of the battery is excessive at low temperature, the thermal management energy consumption is increased, and the cruising mileage of the vehicle is seriously shortened. In addition, the cycle life of the battery may be seriously reduced on the premise that the vehicle in the south operates in a high-temperature environment for a long time and the vehicle in the north keeps consistent battery thermal management control strategies.
Therefore, in order to solve the above problems, the present invention first obtains the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature, and the battery state of charge of the automobile; judging whether the position of the automobile is north or south according to the geographical latitude of the automobile; judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; finally, based on the position of the automobile and the battery thermal management mode, and according to the local environment temperature and the battery charge state, a preset cooling mode threshold mapping table and a preset heating mode threshold mapping table, different battery thermal management cooling strategies and different battery thermal management heating strategies are correspondingly executed respectively; therefore, the geographical latitude of the vehicle of the automobile is monitored through the big data platform, the change of the environmental temperature of the geographical position of the vehicle is judged, and meanwhile, different battery thermal management cooling strategies or different battery thermal management heating strategies are matched and executed in combination with the consideration of the State of Charge (SOC), so that the working efficiency of the battery is improved, the abundant dynamic property of the vehicle is ensured, the energy consumption is greatly reduced, and the service life of the battery core is prolonged.
Preferably, in another embodiment of the present application, the step of "S200, according to the geographic latitude of the vehicle, determining that the position of the vehicle is north or south" specifically includes the following steps:
s210, when the geographic latitude of the vehicle is detected to be larger than a preset reference latitude, judging that the position of the vehicle is north;
and S220, when the geographic latitude of the vehicle is detected to be smaller than the preset reference latitude, judging that the position of the automobile is south.
Specifically, in this embodiment, because the conventional battery thermal management control strategy is relatively simple, and the south-north position of the vehicle is not considered, the battery thermal management strategy that is switched once is relatively simple and rough, it is first necessary to determine whether the position of the vehicle is north or south, and then, based on the position of the vehicle, preconditions are provided for selecting different battery thermal management cooling strategies or different battery thermal management heating strategies to be executed. Typically, the predetermined reference dimension TBD1 (To Be Determined) is 34 ° north latitude, i.e. the qinling-huaihe line.
Preferably, in another embodiment of the present application, the step of "S300, determining that the battery thermal management mode enters the cooling mode or the heating mode according to the vehicle battery temperature" specifically includes the following steps:
s310, when the temperature of the vehicle battery is matched with a preset battery reference high temperature, judging that a battery thermal management mode enters a cooling mode;
and S320, when the temperature of the vehicle battery is detected to be matched with a preset battery reference low temperature, judging that a battery thermal management mode enters a heating mode.
Specifically, in this embodiment, before different cooling modes or heating modes are performed, it is necessary to match a preset battery reference high temperature or a preset battery reference low temperature based on the vehicle battery temperature, and only when the mode in which the battery thermal management mode enters is determined, the subsequent operation can be performed.
Preferably, in another embodiment of the present application, when the location of the vehicle and the battery thermal management mode are determined, different battery thermal management cooling strategies are executed according to the local ambient temperature and the battery state of charge;
the proportion of high-temperature weather in the south is far greater than that in the north, different cooling strategies need to be matched in combination with local environment temperature for balancing the relation between the service life of the battery and the driving energy consumption, the local environment temperature Tamb for distinguishing the different cooling strategies in the north is generally 3-38 +/-3 ℃ of the preset environment benchmark high temperature TBD2 corresponding to the south and is generally 3-5 ℃ lower than the TBD 3.
The cooling mode for distinguishing different cooling strategies in the north part presets the charging value SOC TBD5 of a north-part reference battery to be 50-55%, and the corresponding cooling mode in the south part presets the charging value SOC TBD4 of a south-part reference battery to be 5-10% lower than the charging value TBD 5; referring to fig. 2, the driving battery thermal management cooling strategy can be divided into 8 modes according to the position of the automobile, the local environment temperature and the battery state of charge;
specifically, in the step S310, when it is detected that the temperature of the vehicle battery matches a preset battery reference high temperature, it is determined that the battery thermal management mode enters a cooling mode; s400, based on the position of the automobile and the battery thermal management mode, and according to the local environment temperature and the battery state of charge, presetting a cooling mode threshold mapping table, and executing different battery thermal management cooling strategies, wherein the method specifically comprises the following steps:
s410, when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is higher than a preset north reference battery charge value of the cooling mode, and a first battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s420, when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is lower than a preset north reference battery charge value of the cooling mode, and a second battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s430, when the position of the automobile is judged to be north, the battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than the preset north environment reference high temperature, the battery charge state is lower than the preset north reference battery charge value of the cooling mode, and a third battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s440, when the position of the automobile is judged to be north, the battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than the preset north environment reference high temperature, the battery charge state is higher than the preset north reference battery charge value of the cooling mode, and a fourth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s450, when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset south environment reference high temperature, the battery state of charge is larger than a preset south reference battery charge value in the cooling mode, and a fifth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s460, when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset south environment reference high temperature, the battery charge state is lower than a preset south reference battery charge value of the cooling mode, and a sixth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
s470, when the position of the automobile is judged to be south, the battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than the preset southern environment benchmark high temperature, the battery charge state is lower than the preset southern benchmark battery charge value of the cooling mode, and a seventh battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
and S480, when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than the preset southern environment benchmark high temperature, the battery charge state is higher than the preset southern benchmark battery charge value in the cooling mode, and an eighth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table.
Preferably, in another embodiment of the present application, when the location of the vehicle and the battery thermal management mode are determined, different battery thermal management heating strategies are executed according to the local ambient temperature and the battery state of charge;
the proportion of low-temperature weather in the north is far greater than that in the south, different heating strategies need to be matched in combination with local environment temperature for balancing the relation between the service life of the battery and the driving energy consumption, the local environment temperature Tamb for distinguishing the different heating strategies in the north is generally the preset environment reference low temperature TBD7-0 +/-3 ℃, and the preset environment reference low temperature TBD6 corresponding to the south is generally 3-5 ℃ lower than the TBD 7.
The charging value SOC TBD9 of the north reference battery is preset to be 35% -40% in the heating mode for distinguishing different heating strategies in the north, and the charging value SOC TBD8 of the south reference battery is preset to be 5% -10% higher than the charging value TBD9 in the corresponding heating mode in the south; referring to fig. 3, the driving battery thermal management heating strategy can be divided into 8 modes according to the position of the automobile, the current environment temperature and the battery charge state;
specifically, in the step S320, when it is detected that the temperature of the vehicle battery matches a preset battery reference low temperature, it is determined that the battery thermal management mode enters a heating mode; s400, based on the position of the automobile and the battery thermal management mode, and according to the local environment temperature and the battery state of charge, presetting a heating mode threshold mapping table, and executing different battery thermal management heating strategies, wherein the method specifically comprises the following steps:
s401, when the position of an automobile is judged to be north, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than a preset north environment reference low temperature, the battery charge state is larger than a preset north reference battery charge value in the heating mode, and a first battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
s402, when the position of the automobile is judged to be north, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than a preset north environment reference low temperature, the battery charge state is lower than a preset north reference battery charge value of the heating mode, and a second battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
s403, when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than a preset north environment reference low temperature, the battery charge state is smaller than a preset north reference battery charge value of the heating mode, and a third battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
s404, when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than a preset north environment reference low temperature, the battery charge state is higher than a preset north reference battery charge value in the heating mode, and a fourth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
s405, when the position of the automobile is judged to be south, a battery heat management mode enters a heating mode, the local environment temperature is detected to be higher than a preset south environment reference low temperature, the battery charge state is higher than a preset south reference battery charge value in the heating mode, and a fifth battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
s406, when the position of the automobile is judged to be south, a battery heat management mode enters a heating mode, the local environment temperature is detected to be higher than a preset south environment reference low temperature, the battery charge state is lower than a preset south reference battery charge value in the heating mode, and a sixth battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
s407, when the position of the automobile is judged to be south, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than a preset south environment reference low temperature, the battery charge state is lower than a preset south reference battery charge value in the heating mode, and a seventh battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
and S408, when the position of the automobile is judged to be south, the battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset south environment reference low temperature, the battery charge state is larger than the preset south reference battery charge value in the heating mode, and an eighth battery thermal management heating strategy is executed according to the preset heating mode threshold mapping table. Preferably, in another embodiment of the present application, the step of "battery thermal management cooling policy" specifically includes the following steps:
the method comprises the steps that the grade I is achieved, when the current temperature of the battery is detected to be greater than or equal to a first preset entering temperature threshold value and smaller than a second preset entering temperature threshold value, the highest temperature of the battery is controlled to be smaller than or equal to a first preset exiting temperature threshold value, and first cooling liquid target inlet information is set;
in the second grade, when the current temperature of the battery is detected to be greater than or equal to a second preset entry temperature threshold and smaller than a third preset entry temperature threshold, the highest temperature of the battery is controlled to be less than or equal to the second preset exit temperature threshold, and second cooling liquid target inlet information is set;
and grade three, when the current temperature of the battery is detected to be more than or equal to a third preset entering temperature threshold, controlling the highest temperature of the battery to be less than or equal to a third preset exiting temperature threshold, and setting third cooling liquid target inlet information.
Specifically, in this embodiment, each of the eight battery thermal management cooling strategies is relatively similar, and each battery thermal management cooling strategy may be divided into three levels, namely, a Level one Level (1), a Level two Level (2), and a Level three Level (3), as shown in fig. 4, where T1_ in, T2_ in, and T3_ in respectively correspond to a Level (1), a Level (2), and a temperature threshold when the Level (3) enters, a first preset entering temperature threshold, a second preset entering temperature threshold, and a third preset entering temperature threshold, and T1_ out, T2_ out, and T3_ out respectively correspond to a Level (1), a Level (2), and a first preset exiting temperature threshold when the Level (3) exits, a second preset exiting temperature threshold, and a first preset exiting temperature threshold; the cooling level is gradually increased from the slot-middle-urgent, and the entering or exiting of the cooling level cannot skip step by step; tmax is the maximum temperature of the battery, T When in use Is the current temperature of the battery.
The target inlet information of the cooling liquid comprises a target inlet temperature of the cooling liquid and a target inlet flow of the cooling liquid, so that Twoter 1, twoter 2 and Twoter 3 are the target inlet temperatures of the cooling liquid corresponding to Level (1), level (2) and Level (3) respectively; the target inlet flow of the cooling liquid is N L/min, N is a fixed value under different cooling modes under normal conditions, and N is generally 20 +/-5.
Referring to the table I, a preset cooling mode threshold mapping table, eight battery thermal management cooling strategy recommended thresholds, is shown;
Figure BDA0003789988980000171
watch 1
The interpretation of table one is that,
1. the cycle is 1 year, the day of the northern high-temperature weather is far lower than that of the southern, the heat dissipation environment of the vehicle is better, and the driving cooling starting temperature is higher than that of the southern by 2 ℃ under the same other conditions, so that the service life of the battery is ensured, and the energy consumption is reduced. Comparing cooling strategy 1 and cooling strategy 8, cooling strategy 2 and cooling strategy 7, cooling strategy 3 and cooling strategy 6, cooling strategy 4 and cooling strategy 5: the north of the entering and exiting thresholds of Level (1) and Level (2) is higher than 2 ℃ in the south, the north of the entering and exiting thresholds of Level (3) is consistent with the south, the south of Twister 1 is consistent with the north, and the north of Twister 2 and Twister 3 is higher than 2 ℃ in the south.
2. The ambient temperature is also an important factor influencing the heat dissipation of the vehicle, and under the same conditions, the driving cooling is started earlier when the ambient temperature is higher, so that the available power of the vehicle is not limited, and the service life of the battery is not influenced. Compare cooling strategy 1 and cooling strategy 4, cooling strategy 2 and cooling strategy 3, cooling strategy 5 and cooling strategy 8, cooling strategy 6 and cooling strategy 7: the driving cooling opening and closing threshold values are 2 ℃ lower when the ambient temperature is higher, and Tswatter 1, tswatter 2 and Tswatter 3 are consistent.
3. The SOC is directly related to the available power and the available energy of the vehicle, and under the same other conditions, the driving cooling is started later when the SOC is lower, so that the available power of the vehicle is not limited, and the driving mileage of the vehicle can be prolonged. Comparative cooling strategy 2 and cooling strategy 1, cooling strategy 3 and cooling strategy 4, cooling strategy 7 and cooling strategy 8, comparative cooling strategy 6 and cooling strategy 5: the driving cooling opening and closing threshold values are both 2 ℃ higher when the SOC is lower, tswatter 1 and Tswatter 2 are consistent, and Tswatter 3 is 2 ℃ higher when the SOC is lower.
Preferably, in another embodiment of the present application, the step of "battery thermal management heating policy" specifically includes the following steps:
a Level four Level (4), when the current temperature of the battery is detected to be greater than or equal to a fifth preset entry temperature threshold value and less than a fourth preset entry temperature threshold value, controlling the lowest temperature of the battery to be greater than or equal to a fourth preset exit temperature threshold value, and setting fourth cooling liquid target inlet information;
and a Level five Level (5), when the current temperature of the battery is detected to be less than a fifth preset entering temperature threshold value, controlling the lowest temperature of the battery to be more than or equal to a fifth preset exiting temperature threshold value, and setting fifth cooling liquid target inlet information.
Specifically, in this embodiment, each of the eight battery thermal management heating strategies is similar, and each battery thermal management heating strategy may be divided into two levels, a Level four (4) and a Level five (5), where the entering or exiting of the heating Level from the Level-urgent is gradual and cannot jump beyond the Level; referring to fig. 5, T4_ in and T5_ in respectively correspond to a Level (4), a fourth preset entry temperature threshold and a fifth preset entry temperature threshold of a temperature threshold when the Level (5) enters, and T4_ out and T5_ out respectively correspond to a Level (4), a fourth preset exit temperature threshold when the Level (5) exits and a fifth preset exit temperature threshold; tmin is the minimum temperature of the battery, T When the temperature is higher than the set temperature Is the current temperature of the battery; twoter 4 and Twoter 5 are respectively the target inlet temperatures of the cooling liquid at Level (4) and Level (5), the target inlet flow rate of the cooling liquid is M L/min, M is a constant value under different heating modes in normal conditions, and M is generally 20 +/-5.
Referring to the table two, threshold values are recommended for a preset heating mode threshold value mapping table, namely eight battery thermal management heating strategies;
heating mode T4_in T5_in T4_out T5_out Twater4 Twater5
Heating strategy 1 0℃ -12℃ 5℃ -10℃ 30℃ 40℃
Heating strategy 2 -3℃ -12℃ 2℃ -10℃ 30℃ 38℃
Heating strategy 3 -5℃ -12℃ 0℃ -10℃ 30℃ 38℃
Heating strategy 4 -3℃ -12℃ 2℃ -10℃ 30℃ 40℃
Heating strategy 5 -5℃ -12℃ 0℃ -10℃ 28℃ 38℃
Heating strategy 6 -9℃ -12℃ -4℃ -10℃ 28℃ 36℃
Heating strategy 7 -7℃ -12℃ -2℃ -10℃ 28℃ 36℃
Heating strategy 8 -3℃ -12℃ 2℃ -10℃ 28℃ 38℃
Watch 2
The interpretation of table two is that,
1. similar to the driving cooling, the cycle is 1 year, the day ratio of the south low-temperature weather is far lower than that of the north, the vehicle heat preservation environment is better, and the driving heating starting temperature is lower than that of the north by 2-4 ℃ under the same other conditions, so that the service life of the battery is ensured, and the energy consumption is reduced. Comparing heating strategy 1 and heating strategy 8, heating strategy 2 and heating strategy 7, heating strategy 3 and heating strategy 6, heating strategy 4 and heating strategy 5: the south of the threshold value for entering and exiting the Level (4) is lower than the north by 2-4 ℃, the south of the threshold value for entering and exiting the Level (5) is consistent with the north, the south of Tswater 4 is 2 ℃ lower than the north, and the south of Tswater 5 is 2 ℃ lower than the north.
2. The ambient temperature is also an important factor influencing the heat preservation of the vehicle, and under the same conditions, the driving heating is started earlier when the ambient temperature is lower, so that the available power of the vehicle is not limited, and the service life of the battery is not influenced. Compare heating strategy 1 and heating strategy 4, heating strategy 2 and heating strategy 3, heating strategy 5 and heating strategy 8, heating strategy 6 and heating strategy 7: the vehicle heating on and off thresholds are both 2-3 ℃ higher when the ambient temperature is lower, and Twister 4 and Twister 5 are both consistent.
3. The SOC is directly related to the available power and the available energy of the vehicle, and under the same other conditions, the heating of the running vehicle is started later when the SOC is lower, so that the available power of the vehicle is not limited, and the driving mileage of the vehicle can be prolonged. Comparison heating strategy 2 and heating strategy 1, heating strategy 3 and heating strategy 4, heating strategy 7 and heating strategy 8, comparison heating strategy 6 and heating strategy 5: the driving heating opening and closing threshold values are 2-4 ℃ lower when the SOC is lower, tswatter 4 is kept consistent, and Tswatter 5 is 2 ℃ lower when the SOC is lower.
Preferably, in another embodiment of the present application, before the step of "S400, based on a location of an automobile and the battery thermal management mode, and according to the local ambient temperature and the battery state of charge, presetting a cooling mode threshold mapping table or a heating mode threshold mapping table, and respectively executing different battery thermal management cooling strategies or different battery thermal management heating strategies" specifically includes the following steps:
s500, judging the driving habit type of the driver;
s510, when the driving habit type is judged to be an aggressive type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode;
s520, when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched;
and S530, when the driving habit type is judged to be the economy type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
Specifically, in this embodiment, the specific threshold settings of the eight battery thermal management cooling strategies and the specific threshold settings of the eight battery thermal management heating strategies are matched based on that the vehicle is in a comfort mode.
During the cooling strategy, when the vehicle is in the eco mode, the preset entering temperature threshold value and the preset exiting temperature threshold value of the descending vehicle cooling under the same condition are respectively increased by 1-2 ℃ compared with the comfort mode, and the target inlet temperature of the cooling liquid is also increased by 1-2 ℃ compared with the comfort mode. When the vehicle is in the sport mode, the preset entering temperature threshold value and the preset exiting temperature threshold value of the descending vehicle cooling under the same condition are respectively reduced by 1-2 ℃ compared with those in the comfort mode, and the target inlet temperature of the cooling liquid is also correspondingly reduced by 1-2 ℃ compared with those in the comfort mode. In addition, the driving habits of the users can be judged according to big data statistics, and when the driving habits of the users are judged to be more aggressive, the battery management system BMS can be matched with the driving cooling strategy in the sport mode in a self-adaptive mode; when the driving habits of the user are judged to be relatively economical, the BMS can be matched with the driving cooling strategy in the eco mode in a self-adaptive mode.
During a heating strategy, when a vehicle is in an eco mode, a preset entering temperature threshold value and a preset exiting temperature threshold value of the descending vehicle are correspondingly reduced by 1-2 ℃ compared with those in a comfort mode under the same condition, and a target inlet temperature of a cooling liquid is correspondingly reduced by 3-5 ℃ compared with that in the comfort mode. When the vehicle is in the sport mode, the preset entering temperature threshold value and the preset exiting temperature threshold value of the downlink vehicle heating under the same condition are respectively increased by 1-2 ℃ compared with those in the comfort mode, and the target inlet temperature of the cooling liquid is also correspondingly increased by 3-5 ℃ compared with those in the comfort mode. In addition, the driving habits of the users can be judged according to big data statistics, and when the driving habits of the users are judged to be more aggressive, the BMS can be matched with the driving heating strategy in the sport mode in a self-adaptive mode; when the driving habits of the user are judged to be relatively economical, the BMS can be matched with the driving heating strategy in the eco mode in a self-adaptive mode.
Therefore, the invention intelligently matches cooling or heating strategies in different modes according to the geographic position of the vehicle, the local air temperature, the current SOC of the vehicle, the driving habits of the user and other factors, improves the driving experience, optimizes the energy consumption of the vehicle and prolongs the service life of the battery.
Referring to fig. 6, an embodiment of the present invention provides an intelligent battery thermal management control system 100 for an electric vehicle, including: the system comprises a vehicle information acquisition module 110, a geographic position judgment module 120, a mode judgment module 130, a cooling and heating strategy module 140 and a driving habit type module 150;
the vehicle information acquisition module 110 is configured to acquire a vehicle geographic latitude, a local environment temperature, a vehicle battery temperature, and a battery state of charge of the vehicle;
the geographic position judging module 120 is in communication connection with the vehicle information acquiring module 110, and is used for judging whether the position of the automobile is north or south according to the geographic latitude of the automobile;
the mode judging module 130 is in communication connection with the vehicle information acquiring module 110, and is used for judging whether the battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery;
and a cooling and heating policy module 140, communicatively connected to the vehicle information obtaining module 110, the geographic position determining module 120, and the mode determining module 130, and configured to, based on a location of the vehicle and the battery thermal management mode, respectively and according to the local environment temperature and the battery state of charge, preset a cooling mode threshold mapping table or a heating mode threshold mapping table, and correspondingly execute different battery thermal management cooling policies or different battery thermal management heating policies.
Further comprising:
a driving habit type module 150, communicatively connected to the cooling and heating strategy module 140, for determining a driving habit type of the driver; when the driving habit type is judged to be an aggressive type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode is matched; when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched; and when the driving habit type is judged to be the economic type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
Specifically, the specific implementation flows of each functional module in this embodiment have been described in detail in the corresponding method embodiments, and are not described one by one.
According to the scheme, the geographical latitude of a vehicle, the local environment temperature, the vehicle battery temperature and the battery charge state of the vehicle are obtained; judging whether the position of the automobile is north or south according to the geographical latitude of the automobile; judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; finally, based on the position of the automobile and the battery thermal management mode, and according to the local environment temperature and the battery charge state, a preset cooling mode threshold mapping table and a preset heating mode threshold mapping table, different battery thermal management cooling strategies and different battery thermal management heating strategies are correspondingly executed respectively; therefore, the geographical latitude of the vehicle of the automobile is monitored through the big data platform, the change of the environmental temperature of the geographical position of the vehicle is judged, the SOC (State of Charge) of the battery is considered, and meanwhile, the factors such as the driving habits of a user are considered, and different battery thermal management cooling strategies or different battery thermal management heating strategies are matched and executed, so that the working efficiency of the battery is improved, the abundant dynamic property of the vehicle is ensured, the energy consumption is greatly reduced, and the service life of the battery core is prolonged.
Based on the same inventive concept, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements all or part of the method steps of the above method.
The present invention realizes all or part of the processes of the above methods, and can also be implemented by a computer program instructing related hardware, where the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Based on the same inventive concept, embodiments of the present application further provide an electronic device, which includes a memory and a processor, where the memory stores a computer program running on the processor, and the processor executes the computer program to implement all or part of the method steps in the method.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or models, and the processor may implement various functions of the computer device by executing or otherwise executing the computer programs and/or models stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (e.g., a sound playing function, an image playing function, etc.); the storage data area may store data (e.g., audio data, video data, etc.) created according to the use of the cellular phone. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), servers and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The intelligent battery thermal management control method for the electric automobile is characterized by comprising the following steps:
acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile;
judging whether the position of the automobile is north or south according to the geographical latitude of the automobile;
judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery;
and respectively and correspondingly executing different battery heat management cooling strategies or different battery heat management heating strategies based on the position of the automobile and the battery heat management mode, and according to the local environment temperature and the battery state of charge, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table.
2. The intelligent battery thermal management control method for the electric automobile according to claim 1, wherein the step of judging whether the automobile is located in the north or south according to the geographical latitude of the automobile specifically comprises the following steps:
when the geographic latitude of the vehicle is detected to be larger than a preset reference latitude, judging that the position of the vehicle is north;
and when the geographic latitude of the vehicle is detected to be smaller than the preset reference latitude, judging that the position of the automobile is south.
3. The intelligent battery thermal management control method for the electric automobile according to claim 1, wherein the step of determining whether the battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery specifically comprises the following steps:
when the temperature of the vehicle battery is matched with a preset battery reference high temperature, judging that a battery thermal management mode enters a cooling mode;
and when the temperature of the vehicle battery is detected to be matched with the preset battery reference low temperature, judging that the battery thermal management mode enters a heating mode.
4. The intelligent battery thermal management control method for the electric automobile according to claim 3, wherein when the vehicle battery temperature is detected to be matched with a preset battery reference high temperature, it is determined that a battery thermal management mode enters a cooling mode; the method comprises the following steps of presetting a cooling mode threshold mapping table according to the local environment temperature and the battery charge state and executing different battery thermal management cooling strategies based on the position of an automobile and the battery thermal management mode, wherein the steps specifically comprise the following steps:
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is higher than a preset north reference battery charge value of the cooling mode, and a first battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than a preset north environment reference high temperature, the battery charge state is lower than a preset north reference battery charge value of the cooling mode, and a second battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset north environment reference high temperature, the battery charge state is lower than a preset north reference battery charge value of the cooling mode, and a third battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset north environment reference high temperature, the battery charge state is larger than a preset north reference battery charge value of the cooling mode, and a fourth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than the preset south environment reference high temperature, the battery charge state is higher than the preset south reference battery charge value of the cooling mode, and a fifth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be lower than a preset south environment reference high temperature, the battery state of charge is lower than a preset south reference battery charge value of the cooling mode, and a sixth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than the preset southern environment reference high temperature, the battery charge state is lower than the preset southern reference battery charge value of the cooling mode, and a seventh battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table;
and when the position of the automobile is judged to be south, the battery thermal management mode enters a cooling mode, the local environment temperature is detected to be higher than the preset southern environment reference high temperature, the battery state of charge is higher than the preset southern reference battery charge value in the cooling mode, and an eighth battery thermal management cooling strategy is executed according to a preset cooling mode threshold mapping table.
5. The intelligent battery thermal management control method for the electric vehicle as claimed in claim 3, wherein when it is detected that the vehicle battery temperature matches a preset battery reference low temperature, it is determined that the battery thermal management mode enters a heating mode; based on the position of the automobile and the battery thermal management mode, and according to the local environment temperature and the battery state of charge, presetting a heating mode threshold mapping table, and executing different battery thermal management heating strategies, the method specifically comprises the following steps:
when the position of the automobile is judged to be in the north, a battery heat management mode enters a heating mode, the local environment temperature is detected to be lower than the preset north environment reference low temperature, the battery charge state is larger than the preset north reference battery charge value in the heating mode, and a first battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset north environment reference low temperature, the battery charge state is lower than the preset north reference battery charge value of the heating mode, and a second battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be in the north, a battery heat management mode enters a heating mode, the local environment temperature is detected to be higher than the preset north environment reference low temperature, the battery charge state is lower than the preset north reference battery charge value of the heating mode, and a third battery heat management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be north, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset north environment reference low temperature, the battery charge state is higher than the preset north reference battery charge value in the heating mode, and a fourth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset south environment reference low temperature, the battery charge state is higher than the preset south reference battery charge value in the heating mode, and a fifth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be higher than the preset south environment reference low temperature, the battery charge state is lower than the preset south reference battery charge value in the heating mode, and a sixth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset south environment reference low temperature, the battery charge state is lower than the preset south reference battery charge value in the heating mode, and a seventh battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table;
and when the position of the automobile is judged to be south, a battery thermal management mode enters a heating mode, the local environment temperature is detected to be lower than the preset south environment reference low temperature, the battery charge state is greater than the preset south reference battery charge value in the heating mode, and an eighth battery thermal management heating strategy is executed according to a preset heating mode threshold mapping table.
6. The intelligent battery thermal management control method for the electric automobile according to claim 1, wherein the step of 'battery thermal management cooling strategy' specifically comprises the following steps:
when the current temperature of the battery is detected to be greater than or equal to a first preset entering temperature threshold and smaller than a second preset entering temperature threshold, controlling the highest temperature of the battery to be smaller than or equal to a first preset exiting temperature threshold, and setting first cooling liquid target inlet information;
when the current temperature of the battery is detected to be greater than or equal to a second preset entering temperature threshold and smaller than a third preset entering temperature threshold, controlling the highest temperature of the battery to be less than or equal to a second preset exiting temperature threshold, and setting second cooling liquid target inlet information;
and when the current temperature of the battery is detected to be greater than or equal to a third preset entering temperature threshold, controlling the highest temperature of the battery to be less than or equal to a third preset exiting temperature threshold, and setting third cooling liquid target inlet information.
7. The intelligent battery thermal management control method for the electric automobile according to claim 1, wherein the step of 'battery thermal management heating strategy' specifically comprises the following steps:
when the current temperature of the battery is detected to be greater than or equal to a fifth preset entry temperature threshold and smaller than a fourth preset entry temperature threshold, controlling the lowest temperature of the battery to be greater than or equal to a fourth preset exit temperature threshold, and setting fourth cooling liquid target inlet information;
and when the current temperature of the battery is detected to be lower than a fifth preset entry temperature threshold, controlling the lowest temperature of the battery to be higher than or equal to a fifth preset exit temperature threshold, and setting fifth cooling liquid target inlet information.
8. The intelligent battery thermal management control method of the electric vehicle according to claim 1, wherein before the step of executing different battery thermal management cooling strategies or different battery thermal management heating strategies respectively and correspondingly based on a position of the vehicle and the battery thermal management mode and according to the local ambient temperature and the state of charge of the battery, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table, the method specifically comprises the following steps:
judging the driving habit type of a driver;
when the driving habit type is judged to be an aggressive type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode;
when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched;
and when the driving habit type is judged to be the economic type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
9. The utility model provides an electric automobile intelligence battery thermal management control system which characterized in that includes:
the vehicle information acquisition module is used for acquiring the vehicle geographic latitude, the local environment temperature, the vehicle battery temperature and the battery charge state of the automobile;
the geographic position judging module is in communication connection with the vehicle information acquiring module and is used for judging whether the position of the automobile is north or south according to the geographic latitude of the automobile;
the mode judging module is in communication connection with the vehicle information acquiring module and is used for judging whether a battery thermal management mode enters a cooling mode or a heating mode according to the temperature of the vehicle battery; and (c) a second step of,
and the cooling and heating strategy module is in communication connection with the vehicle information acquisition module, the geographic position judgment module and the mode judgment module, and is used for correspondingly executing different battery heat management cooling strategies or different battery heat management heating strategies respectively according to the local environment temperature and the battery charge state, a preset cooling mode threshold mapping table or a preset heating mode threshold mapping table based on the position of the automobile and the battery heat management mode.
10. The intelligent battery thermal management control system of the electric vehicle as claimed in claim 9, further comprising a driving habit type module, communicatively connected to the cooling and heating strategy module, for determining a driving habit type of a driver; when the driving habit type is judged to be an aggressive type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle sport mode is matched; when the driving habit type is judged to be a comfortable normal type, a battery thermal management cooling strategy or a battery thermal management heating strategy in a vehicle comfort mode is matched; and when the driving habit type is judged to be the economy type, matching a battery thermal management cooling strategy or a battery thermal management heating strategy in the vehicle eco mode.
CN202210953027.7A 2022-08-09 2022-08-09 Electric vehicle intelligent battery thermal management control method and system Pending CN115503554A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116087798A (en) * 2023-04-03 2023-05-09 中北润良新能源(济宁)股份有限公司 Power battery detection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116087798A (en) * 2023-04-03 2023-05-09 中北润良新能源(济宁)股份有限公司 Power battery detection method
CN116087798B (en) * 2023-04-03 2023-07-18 中北润良新能源(济宁)股份有限公司 Power battery detection method

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