CN118213673A - Battery pack thermal management method, device, equipment and readable storage medium - Google Patents

Battery pack thermal management method, device, equipment and readable storage medium Download PDF

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Publication number
CN118213673A
CN118213673A CN202410101053.6A CN202410101053A CN118213673A CN 118213673 A CN118213673 A CN 118213673A CN 202410101053 A CN202410101053 A CN 202410101053A CN 118213673 A CN118213673 A CN 118213673A
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China
Prior art keywords
temperature
preset
battery module
heating
large battery
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Application number
CN202410101053.6A
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Chinese (zh)
Inventor
胡泽军
徐远
梅传广
孙希
林翔宇
李利员
朱琦章
李乐怡
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Dongfeng Automobile Co Ltd
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Dongfeng Automobile Co Ltd
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Priority to CN202410101053.6A priority Critical patent/CN118213673A/en
Publication of CN118213673A publication Critical patent/CN118213673A/en
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    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/63—Control systems

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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)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

A battery pack thermal management method, apparatus, device and readable storage medium, the battery pack thermal management method includes: when the temperature of the large battery module meets the preset heating condition or the preset refrigerating condition in the low-voltage power-on state of the vehicle is detected, the high-voltage power-on of the vehicle is controlled, and heating equipment or refrigerating equipment corresponding to the large battery module is controlled to heat or refrigerate the large battery module. According to the application, the battery pack is divided into a plurality of large battery modules, independent heating equipment and independent refrigerating equipment are used for carrying out heat management on each large battery module, and heating and refrigerating are carried out only on the large battery modules needing to be subjected to heat management, so that heating equipment and refrigerating equipment with smaller power can be used, the electric energy output during single heat management can be reduced, the energy consumption of heat management is reduced, the working time for carrying out single heat management can be reduced, and the heat management efficiency is improved.

Description

Battery pack thermal management method, device, equipment and readable storage medium
Technical Field
The present application relates to the field of power battery technologies, and in particular, to a method, an apparatus, a device, and a readable storage medium for thermal management of a battery pack.
Background
The temperature interval suitable for the battery to work is between 10 ℃ and 30 ℃, and the battery thermal management is a process of adjusting and controlling the temperature of the battery by utilizing technologies such as heating or cooling, etc., simply, when the temperature of the battery is detected to be too high, the cooling is started to cool the battery, when the temperature of the battery is detected to be too low, the heating is started to heat the battery, so that the temperature of a battery pack is in a proper working temperature interval, the service life of the battery is prolonged, and the battery keeps good performance. However, the current battery thermal management scheme has the problems of over high energy consumption and low efficiency of heating and cooling.
Disclosure of Invention
The application provides a battery pack thermal management method, a device, equipment and a readable storage medium, which aim to solve the technical problems of over high energy consumption and low efficiency of heating and refrigeration in the conventional battery thermal management scheme.
In a first aspect, an embodiment of the present application provides a battery pack thermal management method, where the battery pack includes a plurality of large battery modules, each large battery module corresponds to an independent heating device and a cooling device, and the battery pack thermal management method includes:
When the temperature of the large battery module meets the preset heating condition or the preset refrigerating condition in the low-voltage power-on state of the vehicle is detected, the high-voltage power-on of the vehicle is controlled, and heating equipment or refrigerating equipment corresponding to the large battery module is controlled to heat or refrigerate the large battery module.
Optionally, when it is detected that the temperature of the large battery module meets a preset heating condition or a preset cooling condition in the low-voltage power-on state of the vehicle, controlling the high-voltage power-on of the vehicle, and before controlling the heating device or the cooling device corresponding to the large battery module to heat or cool the large battery module, the method includes:
Monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and powering-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
When detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of the vehicle, controlling the high-voltage power-on of the vehicle, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module, the method comprises the following steps:
When the temperature of the large battery module reaches the preset heating temperature or the preset refrigerating temperature, controlling heating equipment or refrigerating equipment corresponding to the large battery module to stop heating or refrigerating the large battery module;
When all the large battery modules are detected to stop heating or cooling, the high-voltage low-voltage and the low-voltage of the vehicle are controlled.
Optionally, the preset conditions are: the second highest temperature of the temperatures of the battery cells of the battery pack is greater than or equal to the first preset temperature or the second lowest temperature is less than or equal to the second preset temperature.
Optionally, the preset heating conditions are: the secondary low temperature in the temperature of a plurality of battery monomers of the big battery module is less than or equal to the third preset temperature and the secondary high temperature is less than or equal to the fourth preset temperature, and the preset refrigeration condition is: the second highest temperature of the temperatures of the plurality of battery cells of the large battery module is greater than or equal to a fifth preset temperature and the second lowest temperature is greater than or equal to a sixth preset temperature.
Optionally, when detecting that the temperature of the large battery module meets a preset heating condition or a preset cooling condition in the low-voltage power-on state of the vehicle, controlling the high-voltage power-on of the vehicle, and controlling the heating device or the cooling device corresponding to the large battery module to heat or cool the large battery module includes:
When detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of the vehicle, if detecting that the thermal management system is in fault, sending a heating starting or refrigerating prompt to the terminal;
And controlling the high-voltage power on of the vehicle according to the heating or refrigerating starting instruction sent by the terminal, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module.
Optionally, when detecting that the temperature of the large battery module reaches the preset heating temperature or the preset cooling temperature, controlling the heating device or the cooling device corresponding to the large battery module to stop heating or cooling the large battery module includes:
when the highest temperature of the temperatures of the plurality of battery monomers of the large battery module is detected to be more than or equal to a seventh preset temperature or the lowest temperature is detected to be more than or equal to an eighth preset temperature, sending a heating stopping prompt to the terminal;
If the heating stopping instruction sent by the terminal is not received after the preset time length is exceeded, controlling heating equipment corresponding to the large battery module to stop heating the large battery module;
when the highest temperature in the temperatures of the plurality of battery monomers of the large battery module is detected to be smaller than or equal to a ninth preset temperature or the lowest temperature is detected to be smaller than or equal to a tenth preset temperature, sending a refrigeration stopping prompt to the terminal;
and if the refrigerating instruction sent by the terminal is not received after the preset time length is exceeded, controlling the refrigerating equipment corresponding to the large battery module to stop refrigerating the large battery module.
In a second aspect, an embodiment of the present application provides a battery pack thermal management apparatus, where the battery pack includes a plurality of large battery modules, each large battery module corresponds to an independent heating device and a cooling device, and the battery pack thermal management apparatus includes:
and the control module is used for controlling the high-voltage power on of the vehicle and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module when detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition under the low-voltage power on state of the vehicle.
Optionally, the battery pack thermal management device further comprises a monitoring module for:
Monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and powering-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
the battery pack thermal management device further comprises a power-down module for:
When the temperature of the large battery module reaches the preset heating temperature or the preset refrigerating temperature, controlling heating equipment or refrigerating equipment corresponding to the large battery module to stop heating or refrigerating the large battery module;
When all the large battery modules are detected to stop heating or cooling, the high-voltage low-voltage and the low-voltage of the vehicle are controlled.
In a third aspect, an embodiment of the present application provides a battery pack thermal management apparatus, where the battery pack thermal management apparatus includes a processor, a memory, and a battery pack thermal management program stored on the memory and executable by the processor, where the battery pack thermal management program, when executed by the processor, implements the steps of the battery pack thermal management method as described above.
In a fourth aspect, an embodiment of the present application provides a readable storage medium having a battery pack thermal management program stored thereon, where the battery pack thermal management program, when executed by a processor, implements the steps of a battery pack thermal management method as described above.
The technical scheme provided by the embodiment of the application has the beneficial effects that:
In the embodiment of the application, the battery pack comprises a plurality of large battery modules, each large battery module is provided with independent heating equipment and refrigerating equipment, and when detecting that the temperature of the large battery module in a low-voltage power-on state of the vehicle meets a preset heating condition or a preset refrigerating condition, the large battery module is controlled to be powered on at high voltage, and the heating equipment or the refrigerating equipment corresponding to the large battery module is controlled to heat or refrigerate the large battery module. According to the embodiment of the application, the battery pack is divided into the plurality of large battery modules, independent heating equipment and cooling equipment are used for carrying out heat management on each large battery module, and heating and cooling are carried out only on the large battery modules needing to be subjected to heat management, so that heating equipment and cooling equipment with smaller power can be used, the electric energy output during single heat management can be reduced, the energy consumption of heat management can be reduced, the working time for single heat management can be reduced, the heat management efficiency can be improved, and in addition, the battery pack is subjected to finer heat management, so that other battery modules can not be influenced when individual battery modules are subjected to heat failure.
Drawings
FIG. 1 is a flow chart of a thermal management method for a battery pack according to an embodiment of the application;
FIG. 2 is a schematic diagram illustrating a thermal management structure according to an embodiment of a thermal management method for a battery pack according to the present application;
FIG. 3 is a schematic flow chart of a thermal management method for a battery pack according to an embodiment of the application;
FIG. 4 is a schematic diagram of a refinement flow chart of step S10 in FIG. 1 according to the present application;
FIG. 5 is a schematic diagram of a refinement flow chart of step S20 in FIG. 2 according to the present application;
FIG. 6 is a schematic diagram illustrating functional modules of an embodiment of a thermal management device for a battery pack according to the present application;
fig. 7 is a schematic hardware structure of a battery pack thermal management device according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
First, some technical terms in the present application are explained so as to facilitate understanding of the present application by those skilled in the art.
The battery cell refers to a single electrochemical cell containing an anode and a cathode, is the most basic element for forming a battery module and a battery pack, can provide voltage of 3-4V (volts) generally, and is not directly used.
The battery module is a collection of a plurality of battery cells, a plurality of battery cells are combined in a series-parallel connection mode, and a product between the battery cells and a battery pack formed after the single battery monitoring and managing device is additionally arranged can provide higher voltage and capacity.
The battery pack is formed by packaging and packaging a plurality of battery modules, and a battery management system and the like are added, namely a product which is finally provided for users by a battery factory.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
In a first aspect, an embodiment of the present application provides a method for thermal management of a battery pack.
In an embodiment, the battery pack includes a plurality of large battery modules, each large battery module corresponds to an independent heating device and an independent cooling device, referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a battery pack thermal management method according to the present application, and as shown in fig. 1, the battery pack thermal management method includes:
And step S10, when the temperature of the large battery module in the low-voltage power-on state of the vehicle is detected to meet the preset heating condition or the preset refrigerating condition, controlling the high-voltage power-on of the vehicle, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module.
In this embodiment, the battery pack is divided into a plurality of large battery modules, each large battery module is composed of a plurality of battery modules, independent heating equipment and cooling equipment are used for performing thermal management on each large battery module, when the temperature of each large battery module is detected to meet a preset heating condition or a preset cooling condition in a low-voltage power-on state of the vehicle, namely in a power supply state of a vehicle storage battery, the high-voltage power-on of a power battery of the vehicle is controlled to supply power to the heating equipment or the cooling equipment, and then the heating equipment or the cooling equipment corresponding to the large battery modules is controlled to heat or cool the large battery modules, so that the temperature of the battery pack is kept in a proper temperature working range.
In this embodiment, the battery pack is divided into a plurality of large battery modules, each large battery module is composed of a plurality of large battery modules, each large battery module corresponds to independent heating equipment and refrigerating equipment, namely, one or more large battery modules can share one set of heating equipment and refrigerating equipment.
In this embodiment, referring to fig. 2, fig. 2 is a schematic structural diagram of thermal management of an embodiment of a battery pack thermal management method of the present application, as shown in fig. 2, a heating device may include a PTC heater (which is an electric heater with advantages of small thermal resistance and high heat exchange efficiency and is an automatic constant temperature and power saving device) and is composed of a PTC ceramic heating element and an aluminum tube, and a refrigerating device may include an air conditioner compressor and a condenser, each large battery module includes an independent PTC heater, an air conditioner compressor and a corresponding condenser, and a corresponding electromagnetic valve, and a battery water pump is connected in the middle of the large battery module.
Further, in an embodiment, referring to fig. 3, fig. 3 is another flow chart of an embodiment of a thermal management method for a battery pack according to the present application, as shown in fig. 3, before step S10, the method includes:
Step S00, monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and power-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
after step S10, it includes:
Step S20, when the temperature of the large battery module is detected to reach the preset heating temperature or the preset refrigerating temperature, heating equipment or refrigerating equipment corresponding to the large battery module is controlled to stop heating or refrigerating the large battery module;
and step S30, when all the large battery modules are detected to stop heating or cooling, controlling the high-voltage low-voltage and the low-voltage of the vehicle.
In this embodiment, a temperature sensor is used to monitor the temperature of a battery cell in a battery pack in a power-down state when the vehicle is parked, and if the temperature of the battery cell meets a preset condition, the low-voltage power-up of a storage battery of the vehicle is controlled to wake up the battery management system. After heating or refrigerating equipment corresponding to the large battery module is controlled to heat or refrigerate the large battery module, when the temperature of the large battery module is detected to reach the preset heating temperature or the preset refrigerating temperature, the heating or refrigerating equipment corresponding to the large battery module is controlled to stop heating or refrigerating the large battery module, and when all the large battery modules are detected to stop heating or refrigerating, the high-voltage power down and the low-voltage power down of the vehicle are controlled to enable the vehicle to be restored to a parking power down state.
Further, in an embodiment, the preset condition is: the second highest temperature of the temperatures of the battery cells of the battery pack is greater than or equal to the first preset temperature or the second lowest temperature is less than or equal to the second preset temperature.
In this embodiment, the preset conditions are: the next highest temperature in the temperatures of a plurality of battery monomers of the battery pack is larger than or equal to a first preset temperature (such as 33 ℃) or the next lowest temperature is smaller than or equal to a second preset temperature (such as 5 ℃), when the temperatures of the battery monomers meet preset conditions, the low-voltage power-on of the vehicle is controlled, the highest temperature and the lowest temperature are not used, and the next highest temperature and the next lowest temperature are used as conditions for judging the low-voltage power-on of the vehicle, so that misjudgment influence caused by the conditions of temperature acquisition failure of individual battery monomers or thermal failure of individual battery monomers can be eliminated, and the accuracy of thermal management is improved.
Further, in an embodiment, the preset heating condition is: the secondary low temperature in the temperature of a plurality of battery monomers of the big battery module is less than or equal to the third preset temperature and the secondary high temperature is less than or equal to the fourth preset temperature, and the preset refrigeration condition is: the second highest temperature of the temperatures of the plurality of battery cells of the large battery module is greater than or equal to a fifth preset temperature and the second lowest temperature is greater than or equal to a sixth preset temperature.
In this embodiment, the preset heating conditions are: the second lower temperature of the temperatures of the plurality of battery cells of the large battery module is less than or equal to a third preset temperature (such as 5 ℃) and the second higher temperature is less than or equal to a fourth preset temperature (such as 28 ℃), and the preset refrigeration conditions are as follows: the next highest temperature among the temperatures of the plurality of battery cells of the large battery module is equal to or higher than a fifth preset temperature (for example, 33 ℃) and the next lowest temperature is equal to or higher than a sixth preset temperature (for example, 30 ℃).
Further, referring to fig. 4, fig. 4 is a detailed flow chart of step S10 in fig. 1 according to the present application, and as shown in fig. 4, step S10 includes:
Step S101, when detecting that the temperature of a large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of a vehicle, if a thermal management system fault is detected, sending a heating starting or refrigerating prompt to a terminal;
Step S102, according to a heating or refrigerating starting instruction sent by the terminal, controlling the high-voltage power-on of the vehicle, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module.
In this embodiment, the terminal may be, for example, a user APP, when it is detected that the temperature of the large battery module in the low-voltage power-on state of the vehicle meets a preset heating condition or a preset cooling condition, if a fault of the thermal management system is detected, a start heating or cooling reminder may be sent to the user APP, the user participates in deciding whether to start heating or cooling reminder, and according to a start heating or cooling instruction sent by the user APP, the high-voltage power-on of the vehicle is controlled, and heating equipment or cooling equipment corresponding to the large battery module is controlled to heat or cool the large battery module, so that when the thermal management system is prevented from being faulty, the thermal management cannot be performed on the battery pack, and the user participates in decision, and meanwhile, user experience is improved.
Further, referring to fig. 5, fig. 5 is a detailed flow chart of step S20 in fig. 3, and as shown in fig. 5, step S20 includes:
step S201, when the highest temperature of the plurality of battery monomers of the large battery module is detected to be more than or equal to a seventh preset temperature or the lowest temperature is detected to be more than or equal to an eighth preset temperature, a heating stop prompt is sent to the terminal;
step S202, if a heating stopping instruction sent by a terminal is not received in a preset time period, heating equipment corresponding to the large battery module is controlled to stop heating the large battery module;
Step S203, when the highest temperature in the temperatures of a plurality of battery monomers of the large battery module is detected to be smaller than or equal to a ninth preset temperature or the lowest temperature is detected to be smaller than or equal to a tenth preset temperature, a refrigeration stopping prompt is sent to the terminal;
And step S204, if the refrigerating instruction sent by the terminal is not received after the preset time length is exceeded, controlling the refrigerating equipment corresponding to the large battery module to stop refrigerating the large battery module.
In this embodiment, when it is detected that the highest temperature of the plurality of battery monomers of the large battery module is greater than or equal to a seventh preset temperature (for example, 30 ℃) or the lowest temperature is greater than or equal to an eighth preset temperature (for example, 10 ℃), a heating stopping prompt is sent to a terminal (for example, a user APP), and the user participates in deciding whether to stop heating, so as to ensure timely and effective battery pack heating management, and if a heating stopping instruction sent by the user APP is not received for more than a preset time period, heating equipment corresponding to the large battery module is controlled to stop heating the large battery module. Similarly, when the highest temperature of the plurality of battery monomers of the large battery module is detected to be smaller than or equal to a ninth preset temperature (for example, 25 ℃) or the lowest temperature is detected to be smaller than or equal to a tenth preset temperature (for example, 20 ℃), a refrigeration stopping prompt is sent to the user APP, the user participates in deciding whether to stop heating, in order to guarantee timely and effective battery pack refrigeration management, if a refrigeration stopping instruction sent by the user APP is not received in a preset time period, refrigeration equipment corresponding to the large battery module is controlled to stop refrigerating the large battery module.
In a second aspect, an embodiment of the application further provides a battery pack thermal management device.
In an embodiment, the battery pack includes a plurality of large battery modules, each large battery module corresponds to an independent heating device and an independent cooling device, referring to fig. 6, fig. 6 is a schematic functional block diagram of an embodiment of a battery pack thermal management device according to the present application, and as shown in fig. 6, the battery pack thermal management device includes:
And the control module 10 is used for controlling the high-voltage power on of the vehicle and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module when detecting that the temperature of the large battery module meets the preset heating condition or the preset refrigerating condition under the low-voltage power on state of the vehicle.
Further, in an embodiment, the battery pack thermal management device further includes a monitoring module for:
Monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and powering-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
the battery pack thermal management device further includes a power down module comprising:
The stopping unit is used for controlling heating equipment or refrigerating equipment corresponding to the large battery module to stop heating or refrigerating the large battery module when detecting that the temperature of the large battery module reaches a preset heating temperature or a preset refrigerating temperature;
And the power-down unit is used for controlling the high-voltage power down and the low-voltage power down of the vehicle when detecting that all the large battery modules stop heating or cooling.
Further, in an embodiment, the preset condition is: the second highest temperature of the temperatures of the battery cells of the battery pack is greater than or equal to the first preset temperature or the second lowest temperature is less than or equal to the second preset temperature.
Further, in an embodiment, the preset heating condition is: the secondary low temperature in the temperature of a plurality of battery monomers of the big battery module is less than or equal to the third preset temperature and the secondary high temperature is less than or equal to the fourth preset temperature, and the preset refrigeration condition is: the second highest temperature of the temperatures of the plurality of battery cells of the large battery module is greater than or equal to a fifth preset temperature and the second lowest temperature is greater than or equal to a sixth preset temperature.
Further, in an embodiment, the control module 10 is configured to:
When detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of the vehicle, if detecting that the thermal management system is in fault, sending a heating starting or refrigerating prompt to the terminal;
And controlling the high-voltage power on of the vehicle according to the heating or refrigerating starting instruction sent by the terminal, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module.
Further, in an embodiment, the stopping unit is configured to:
when the highest temperature of the temperatures of the plurality of battery monomers of the large battery module is detected to be more than or equal to a seventh preset temperature or the lowest temperature is detected to be more than or equal to an eighth preset temperature, sending a heating stopping prompt to the terminal;
If the heating stopping instruction sent by the terminal is not received after the preset time length is exceeded, controlling heating equipment corresponding to the large battery module to stop heating the large battery module;
when the highest temperature in the temperatures of the plurality of battery monomers of the large battery module is detected to be smaller than or equal to a ninth preset temperature or the lowest temperature is detected to be smaller than or equal to a tenth preset temperature, sending a refrigeration stopping prompt to the terminal;
and if the refrigerating instruction sent by the terminal is not received after the preset time length is exceeded, controlling the refrigerating equipment corresponding to the large battery module to stop refrigerating the large battery module.
The function implementation of each module in the above battery pack thermal management device corresponds to each step in the above battery pack thermal management method embodiment, and the function and implementation process thereof are not described here in detail.
In a third aspect, embodiments of the present application provide a battery pack thermal management apparatus.
Referring to fig. 7, fig. 7 is a schematic hardware structure of a battery pack thermal management apparatus according to an embodiment of the present application. In an embodiment of the application, a battery pack thermal management device may include a processor, a memory, a communication interface, and a communication bus.
The communication bus may be of any type for implementing the processor, memory, and communication interface interconnections.
The communication interfaces include input/output (I/O) interfaces, physical interfaces, logical interfaces, and the like for implementing device interconnections within the battery pack thermal management apparatus, and interfaces for implementing the battery pack thermal management apparatus to interconnect with other devices (e.g., other computing devices or user devices). The physical interface may be an ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device may be a Display, a Keyboard (Keyboard), or the like.
The memory may be various types of storage media such as random access memory (randomaccess memory, RAM), read-only memory (ROM), nonvolatile RAM (non-volatileRAM, NVRAM), flash memory, optical memory, hard disk, programmable ROM (PROM), erasable PROM (erasable PROM, EPROM), electrically erasable PROM (ELECTRICALLY ERASABLE PROM, EEPROM), and the like.
The processor may be a general-purpose processor, and the general-purpose processor may call a battery pack thermal management program stored in the memory and execute the battery pack thermal management method provided by the embodiment of the present application. For example, the general purpose processor may be a central processing unit (central processing unit, CPU). The method performed when the battery pack thermal management procedure is invoked may refer to various embodiments of the battery pack thermal management method of the present application, and will not be described herein.
Those skilled in the art will appreciate that the hardware configuration shown in fig. 7 is not limiting of the application and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
In a fourth aspect, embodiments of the present application also provide a readable storage medium.
The readable storage medium of the present application stores a battery pack thermal management program, wherein the battery pack thermal management program, when executed by a processor, implements the steps of the battery pack thermal management method as described above.
The method implemented when the battery pack thermal management program is executed may refer to various embodiments of the battery pack thermal management method of the present application, and will not be described herein.
It should be noted that, the foregoing reference numerals of the embodiments of the present application are merely for describing the embodiments, and do not represent the advantages and disadvantages of the embodiments.
The terms "comprising" and "having" and any variations thereof in the description and claims of the application and in the foregoing drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. The terms "first," "second," and "third," etc. are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order, and are not limited to the fact that "first," "second," and "third" are not identical.
In describing embodiments of the present application, "exemplary," "such as," or "for example," etc., are used to indicate by way of example, illustration, or description. Any embodiment or design described herein as "exemplary," "such as" or "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "such as" or "for example," etc., is intended to present related concepts in a concrete fashion.
In the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present application, "plural" means two or more than two.
In some of the processes described in the embodiments of the present application, a plurality of operations or steps occurring in a particular order are included, but it should be understood that the operations or steps may be performed out of the order in which they occur in the embodiments of the present application or in parallel, the sequence numbers of the operations merely serve to distinguish between the various operations, and the sequence numbers themselves do not represent any order of execution. In addition, the processes may include more or fewer operations, and the operations or steps may be performed in sequence or in parallel, and the operations or steps may be combined.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising several instructions for causing a terminal device to perform the method according to the embodiments of the present application.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A battery pack thermal management method, wherein the battery pack comprises a plurality of large battery modules, each large battery module corresponding to an independent heating device and cooling device, the battery pack thermal management method comprising:
When the temperature of the large battery module meets the preset heating condition or the preset refrigerating condition in the low-voltage power-on state of the vehicle is detected, the high-voltage power-on of the vehicle is controlled, and heating equipment or refrigerating equipment corresponding to the large battery module is controlled to heat or refrigerate the large battery module.
2. The battery pack thermal management method according to claim 1, wherein when it is detected that the temperature of the large battery module in the low-voltage power-on state of the vehicle satisfies a preset heating condition or a preset cooling condition, controlling the high-voltage power-on of the vehicle, and controlling heating equipment or cooling equipment corresponding to the large battery module to heat or cool the large battery module, comprises:
Monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and powering-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
When detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of the vehicle, controlling the high-voltage power-on of the vehicle, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module, the method comprises the following steps:
When the temperature of the large battery module reaches the preset heating temperature or the preset refrigerating temperature, controlling heating equipment or refrigerating equipment corresponding to the large battery module to stop heating or refrigerating the large battery module;
When all the large battery modules are detected to stop heating or cooling, the high-voltage low-voltage and the low-voltage of the vehicle are controlled.
3. The battery pack thermal management method according to claim 2, wherein the preset condition is: the second highest temperature of the temperatures of the battery cells of the battery pack is greater than or equal to the first preset temperature or the second lowest temperature is less than or equal to the second preset temperature.
4. The battery pack thermal management method of claim 1, wherein the preset heating conditions are: the secondary low temperature in the temperature of a plurality of battery monomers of the big battery module is less than or equal to the third preset temperature and the secondary high temperature is less than or equal to the fourth preset temperature, and the preset refrigeration condition is: the second highest temperature of the temperatures of the plurality of battery cells of the large battery module is greater than or equal to a fifth preset temperature and the second lowest temperature is greater than or equal to a sixth preset temperature.
5. The battery pack thermal management method according to claim 1, wherein when it is detected that the temperature of the large battery module in the low-voltage power-on state of the vehicle satisfies a preset heating condition or a preset cooling condition, controlling the high-voltage power-on of the vehicle, and controlling the heating device or the cooling device corresponding to the large battery module to heat or cool the large battery module includes:
When detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition in a low-voltage power-on state of the vehicle, if detecting that the thermal management system is in fault, sending a heating starting or refrigerating prompt to the terminal;
And controlling the high-voltage power on of the vehicle according to the heating or refrigerating starting instruction sent by the terminal, and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module.
6. The battery pack thermal management method according to claim 2, wherein when the temperature of the large battery module is detected to reach a preset heating temperature or a preset cooling temperature, controlling the heating device or the cooling device corresponding to the large battery module to stop heating or cooling the large battery module comprises:
when the highest temperature of the temperatures of the plurality of battery monomers of the large battery module is detected to be more than or equal to a seventh preset temperature or the lowest temperature is detected to be more than or equal to an eighth preset temperature, sending a heating stopping prompt to the terminal;
If the heating stopping instruction sent by the terminal is not received after the preset time length is exceeded, controlling heating equipment corresponding to the large battery module to stop heating the large battery module;
when the highest temperature in the temperatures of the plurality of battery monomers of the large battery module is detected to be smaller than or equal to a ninth preset temperature or the lowest temperature is detected to be smaller than or equal to a tenth preset temperature, sending a refrigeration stopping prompt to the terminal;
and if the refrigerating instruction sent by the terminal is not received after the preset time length is exceeded, controlling the refrigerating equipment corresponding to the large battery module to stop refrigerating the large battery module.
7. A battery pack thermal management apparatus, the battery pack comprising a plurality of large battery modules, each large battery module corresponding to an independent heating device and cooling device, the battery pack thermal management apparatus comprising:
and the control module is used for controlling the high-voltage power on of the vehicle and controlling heating equipment or refrigerating equipment corresponding to the large battery module to heat or refrigerate the large battery module when detecting that the temperature of the large battery module meets a preset heating condition or a preset refrigerating condition under the low-voltage power on state of the vehicle.
8. The battery pack thermal management apparatus of claim 7, further comprising a monitoring module to:
Monitoring the temperature of a battery monomer in a battery pack in a vehicle parking and powering-down state, and controlling the low-voltage power-on of the vehicle if the temperature of the battery monomer meets a preset condition;
the battery pack thermal management device further comprises a power-down module for:
When the temperature of the large battery module reaches the preset heating temperature or the preset refrigerating temperature, controlling heating equipment or refrigerating equipment corresponding to the large battery module to stop heating or refrigerating the large battery module;
When all the large battery modules are detected to stop heating or cooling, the high-voltage low-voltage and the low-voltage of the vehicle are controlled.
9. A battery pack thermal management apparatus comprising a processor, a memory, and a battery pack thermal management program stored on the memory and executable by the processor, wherein the battery pack thermal management program, when executed by the processor, implements the steps of the battery pack thermal management method of any of claims 1 to 6.
10. A readable storage medium, wherein a battery pack thermal management program is stored on the readable storage medium, wherein the battery pack thermal management program, when executed by a processor, implements the steps of the battery pack thermal management method of any one of claims 1 to 6.
CN202410101053.6A 2024-01-23 2024-01-23 Battery pack thermal management method, device, equipment and readable storage medium Pending CN118213673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410101053.6A CN118213673A (en) 2024-01-23 2024-01-23 Battery pack thermal management method, device, equipment and readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410101053.6A CN118213673A (en) 2024-01-23 2024-01-23 Battery pack thermal management method, device, equipment and readable storage medium

Publications (1)

Publication Number Publication Date
CN118213673A true CN118213673A (en) 2024-06-18

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Country Status (1)

Country Link
CN (1) CN118213673A (en)

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