WO2024092779A1 - Procédé de gestion thermique pendant la charge d'un véhicule, dispositif et support - Google Patents

Procédé de gestion thermique pendant la charge d'un véhicule, dispositif et support Download PDF

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Publication number
WO2024092779A1
WO2024092779A1 PCT/CN2022/130056 CN2022130056W WO2024092779A1 WO 2024092779 A1 WO2024092779 A1 WO 2024092779A1 CN 2022130056 W CN2022130056 W CN 2022130056W WO 2024092779 A1 WO2024092779 A1 WO 2024092779A1
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WIPO (PCT)
Prior art keywords
charging
battery
current
vehicle
battery temperature
Prior art date
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PCT/CN2022/130056
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English (en)
Chinese (zh)
Inventor
冯阳
张传辉
李宝
Original Assignee
宁德时代新能源科技股份有限公司
宁德时代(上海)智能科技有限公司
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Application filed by 宁德时代新能源科技股份有限公司, 宁德时代(上海)智能科技有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/130056 priority Critical patent/WO2024092779A1/fr
Priority to CN202280092712.3A priority patent/CN118742460A/zh
Publication of WO2024092779A1 publication Critical patent/WO2024092779A1/fr

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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
    • 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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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

Definitions

  • the present disclosure relates to the technical field of battery thermal management, and in particular to a charging thermal management method, device and medium for a vehicle.
  • the present disclosure aims to solve at least one of the technical problems existing in the background technology.
  • one purpose of the present disclosure is to provide a charging thermal management method, device, equipment and medium for a vehicle to solve the problems in the background technology.
  • An embodiment of the first aspect of the present disclosure provides a vehicle charging thermal management method, which includes the following steps: obtaining the current vehicle position, the current battery power, the current battery temperature, and battery charging parameter information; based on the aforementioned current vehicle position, obtaining the charging device charging parameter information of the corresponding charging device; based on the aforementioned current battery power, the aforementioned current battery temperature, the aforementioned battery charging parameter information, and the aforementioned charging device charging parameter information, determining the thermal management strategy of the aforementioned battery.
  • the step of determining the thermal management strategy of the aforementioned battery based on the aforementioned current battery power, the aforementioned battery temperature, the aforementioned battery charging parameter information, and the aforementioned charging device charging parameter information includes: determining matching charging parameters based on the aforementioned battery charging parameter information and the aforementioned charging device charging parameter information; confirming the target battery temperature based on the matching charging parameters; confirming the thermal management strategy of the aforementioned battery based on the aforementioned current battery temperature and the aforementioned target battery temperature.
  • the step of confirming the thermal management strategy of the aforementioned battery based on the aforementioned current battery temperature and the aforementioned target battery temperature also includes: confirming the first remaining power after the aforementioned current battery temperature is adjusted to the aforementioned target battery temperature; confirming the compensated target battery temperature based on the aforementioned first remaining power; and determining the aforementioned thermal management strategy of the aforementioned battery based on the current battery temperature and the aforementioned compensated target battery temperature.
  • the step of confirming the thermal management strategy of the aforementioned battery based on the aforementioned current battery temperature and the aforementioned target battery temperature also includes: confirming the second remaining power of the aforementioned vehicle from the aforementioned current vehicle position to the position of the aforementioned charging device based on the aforementioned current vehicle position and the position of the aforementioned charging device; confirming the compensated target battery temperature based on the aforementioned second remaining power; and determining the aforementioned thermal management strategy of the aforementioned battery based on the current battery temperature and the aforementioned compensated target battery temperature.
  • the step of confirming the thermal management strategy of the aforementioned battery based on the aforementioned current battery temperature and the aforementioned target battery temperature also includes: confirming a first remaining battery charge after the aforementioned current battery temperature is adjusted to the aforementioned target battery temperature; confirming a second remaining battery charge of the aforementioned vehicle from the aforementioned current vehicle position to the position of the aforementioned charging device based on the aforementioned current vehicle position and the position of the aforementioned charging device; confirming the compensated target battery temperature based on the aforementioned first remaining battery charge and the aforementioned second remaining charge; and determining the aforementioned thermal management strategy of the aforementioned battery based on the current battery temperature and the aforementioned compensated target battery temperature.
  • the step of confirming the thermal management strategy of the battery based on the current battery temperature and the target battery temperature also includes: determining the arrival distance of the vehicle to the charging device based on the current vehicle position and the position of the charging device; determining the thermal management strategy of the battery based on the temperature difference between the current battery temperature and the target battery temperature, and the arrival distance, wherein the thermal management strategy includes the corresponding relationship between the arrival distance of the vehicle and the battery temperature.
  • the step of confirming the thermal management strategy of the battery based on the current battery temperature and the target battery temperature also includes: determining the arrival time of the vehicle at the charging device based on the current vehicle position and the position of the charging device; determining the thermal management strategy of the battery based on the temperature difference between the current battery temperature and the target battery temperature, and the arrival time, wherein the thermal management strategy includes the corresponding relationship between the arrival time of the vehicle and the battery temperature.
  • the step of determining the thermal management strategy of the battery according to the current battery power, the current battery temperature, the battery charging parameter information, and the charging parameter information of the charging device includes: obtaining the charging waiting time from the charging device, and determining the thermal management strategy of the battery according to the charging waiting time, the current battery power, the current battery temperature, the battery charging parameter information, and the charging parameter information of the charging device.
  • the charging waiting time is obtained according to the usage status and reservation status of the charging device.
  • the aforementioned step of obtaining the charging device charging parameter information of the corresponding charging device based on the aforementioned current vehicle position also includes: querying the charging device charging parameter information of one or more charging devices within a preset range based on the aforementioned current vehicle position; determining the predicted charging time corresponding to the aforementioned one or more charging devices based on the charging device charging parameter information and battery charging parameters of the aforementioned one or more charging devices; providing the user with an option for selecting a charging device based on the aforementioned predicted charging time; and determining the charging device charging parameter information of the corresponding charging device in response to the aforementioned option selected by the user.
  • the method further includes the steps of: regulating the temperature of the battery according to the thermal management strategy; and adjusting the charging current for charging the battery according to the battery temperature and battery power of the battery in response to a charging instruction.
  • the battery charging parameter information includes at least one of the battery charging current or charging voltage corresponding to the battery, and the corresponding relationship between the battery power and the battery temperature.
  • the charging device charging parameter information includes the charging current or charging voltage corresponding to the charging device.
  • the aforementioned matching charging parameters include a charging current or a charging voltage supported by both the aforementioned battery charging parameter information and the aforementioned charging device charging parameter information.
  • the aforementioned matching charging parameters include a maximum charging current jointly supported by the aforementioned battery charging parameter information and the aforementioned charging device charging parameter information.
  • the thermal management strategy includes adjusting the temperature of the battery to the target battery temperature by controlling at least one of a heater, a cooler, a motor operation mode, or a kinetic energy recovery mode.
  • An embodiment of the second aspect of the present disclosure provides a vehicle charging control method, which includes the following steps: displaying a first interface and detecting a first operation, wherein the first interface is used to detect the first operation, and the first operation is used to trigger a query of a first charging device; in response to the detected first operation, displaying a second interface, wherein the second interface includes charging device identifiers and charging times of more than one first charging device; detecting a second operation, wherein the second operation is used to select a second charging device from the more than one first charging devices; in response to the detected second operation, displaying a third interface, wherein the third interface includes the charging time of the second charging device, wherein the charging time is determined based on the charging parameters of the charging device.
  • the method further includes the following steps: updating the charging time of the third interface in response to a change in at least one of the position of the vehicle, the battery level, and the usage status of the second charging device.
  • the aforementioned method further includes the following steps: in response to the received second operation, executing a thermal management strategy on the aforementioned vehicle according to the aforementioned second charging device to adjust the battery temperature of the vehicle.
  • the second operation is a voice command operation including a charging device identifier of the first charging device
  • the first operation is a voice command operation or a touch operation.
  • the aforementioned method further includes the step of: reserving a second charging device for the vehicle in response to receiving a second operation.
  • the step of displaying a second interface in response to the detected first operation, wherein the second interface includes charging device identifications and charging times of more than one first charging devices includes the following sub-steps: determining matching charging parameters based on the battery charging parameter information of the vehicle and the charging device charging parameter information of the more than one first charging devices; obtaining charging times corresponding to the more than one first charging devices based on the battery power of the vehicle and the matching charging parameters; determining arrival times for the vehicle to reach the more than one first charging devices based on the position of the vehicle and the positions of the more than one first charging devices; obtaining the charging time based on the charging time and the arrival time; and displaying the second interface, wherein the second interface includes charging device identifications and charging times of more than one first charging devices.
  • the aforementioned battery charging parameter information includes the correspondence between the battery power, battery temperature and battery charging current of the aforementioned battery; the aforementioned charging device charging parameter information includes the charging current corresponding to the aforementioned charging device.
  • the aforementioned battery charging parameter information includes the correspondence between the battery power, battery temperature and battery charging voltage of the aforementioned battery; the aforementioned charging device charging parameter information includes the charging voltage corresponding to the aforementioned charging device.
  • the aforementioned charging time includes: charging time, or the total time of arrival time and charging time.
  • the thermal management strategy includes adjusting the temperature of the battery to a target battery temperature corresponding to the second charging device by controlling at least one of a heater, a cooler, a motor operation mode, or a kinetic energy recovery mode.
  • An embodiment of the third aspect of the present disclosure provides a computer device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements any one of the methods in the above embodiments.
  • An embodiment of the fourth aspect of the present disclosure provides a computer-readable storage medium storing a computer program, which implements any one of the methods in the above embodiments when the computer program is executed by a processor.
  • An embodiment of the fifth aspect of the present disclosure provides a computer program product, including a computer program, wherein the computer program implements any one of the methods in the above embodiments when executed by a processor.
  • An embodiment of the sixth aspect of the present disclosure provides a vehicle, comprising a battery and the computer device of the above embodiment, wherein the computer device is electrically connected to the battery for controlling the thermal management of the battery.
  • FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present disclosure.
  • FIG2 is a schematic diagram of an exploded structure of a battery according to some embodiments of the present disclosure.
  • FIG3 is a schematic diagram of a vehicle charging at a charging station according to some embodiments of the present disclosure.
  • FIG4 is a schematic diagram of a battery charging curve provided by some embodiments of the present disclosure.
  • FIG5 is a schematic diagram of a vehicle remotely reserving a charging station according to some embodiments of the present disclosure
  • FIG6 is a flow chart of a battery charging thermal management control method provided by some embodiments of the present disclosure.
  • FIG7a is a schematic diagram of a data frame structure sent by a vehicle to a server in some embodiments of the present disclosure
  • FIG7b is a schematic diagram of a data frame structure sent by a charging station to a server in some embodiments of the present disclosure
  • FIG7c is a schematic diagram of a data frame structure sent by a vehicle server to a vehicle in some embodiments of the present disclosure
  • FIG8 is a hardware schematic diagram of a thermal management system provided by some embodiments of the present disclosure.
  • FIG9 is a schematic diagram of a battery charging curve provided by some embodiments of the present disclosure.
  • FIG10 is a schematic diagram of a mobile terminal remotely reserving a charging pile according to some embodiments of the present disclosure
  • FIG11 is a flow chart of a battery charging thermal management control method provided by some embodiments of the present disclosure.
  • FIG12 is a schematic diagram of a vehicle reserving a charging pile at a charging station according to some embodiments of the present disclosure
  • FIG13 is a flow chart of a battery charging thermal management control method provided by some embodiments of the present disclosure.
  • FIG14 is a first schematic diagram of a human-computer interaction interface provided by some embodiments of the present disclosure.
  • FIG15 is a second schematic diagram of a human-computer interaction interface provided by some embodiments of the present disclosure.
  • FIG16 is a third schematic diagram of a human-computer interaction interface provided by some embodiments of the present disclosure.
  • FIG17 is a fourth schematic diagram of a human-computer interaction interface provided by some embodiments of the present disclosure.
  • FIG18 is a first schematic diagram of a human-computer interaction interface provided by some embodiments of the present disclosure.
  • FIG19 is a flowchart of a method for querying a charging device provided in some embodiments of the present disclosure.
  • FIG. 20 is a schematic diagram of a computer device provided in some embodiments of the present disclosure.
  • 800 display screen; U805 fourth interface; U810 first interface; U820 second interface; U830 third interface.
  • the term "and/or" is only a description of the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B may represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.
  • multiple refers to more than two (including two).
  • multiple groups refers to more than two groups (including two groups), and “multiple pieces” refers to more than two pieces (including two pieces).
  • orientations or positional relationships indicated by technical terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the embodiments of the present disclosure.
  • Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.
  • the present inventors provide a vehicle charging thermal management method, so that before the vehicle arrives at the charging station, the thermal state of the battery is pre-adjusted to match the fast charging requirements of the charging pile.
  • the battery cells disclosed in the embodiments of the present disclosure can be used, but not limited to, in electrical devices such as vehicles, ships or aircraft.
  • a power supply system comprising the battery cells and batteries disclosed in the present disclosure can be used to form the electrical device.
  • the disclosed embodiments provide a charging thermal management method and device for a vehicle, wherein the vehicle includes but is not limited to a passenger car, a commercial vehicle, an engineering vehicle, an automated guided vehicle (AGV), etc.
  • the vehicle battery may be a non-replaceable battery that supports charging of the entire vehicle, or a replaceable battery that supports charging after being separated from the vehicle body.
  • FIG. 1 is a schematic diagram of the structure of a vehicle provided in some embodiments of the present disclosure.
  • the vehicle 1000 may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range vehicle, etc. (hereinafter referred to as an electric vehicle).
  • a battery 100 is disposed inside the vehicle 1000, and the battery 100 may be disposed at the bottom, head, or tail of the vehicle 1000.
  • the battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000.
  • the battery 100 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • FIG. 2 is an exploded view of a battery provided in some embodiments of the present disclosure.
  • the battery 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10.
  • the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures.
  • the box body 10 may include a first part 11 and a second part 12, and the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20.
  • the second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12.
  • the box body 10 formed by the first part 11 and the second part 12 may be in a variety of shapes, such as a cylinder, a cuboid, etc.
  • the battery 100 there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection.
  • a mixed connection means that the multiple battery cells 20 are both connected in series and in parallel.
  • the multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10.
  • the battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.
  • Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.
  • the battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.
  • FIG. 3 is a schematic diagram of a scene of a vehicle charging at a charging station provided by some embodiments of the present disclosure.
  • a charging station refers to a facility or place including one or more on-board chargers or non-on-board chargers (charging piles) for charging electric vehicles and monitoring the status of charging equipment.
  • a charging pile refers to a special device for providing electric energy to the power battery of an electric vehicle, including an AC charging pile, a DC charging pile, an off-board charger, etc.
  • a charging pile 400 is provided in a charging station 2000. The charging pile 400 is electrically connected to the vehicle 1000 through a charging gun to charge the battery 100 of the vehicle 1000.
  • the charging station 2000 here can be a charging station set up by a commercial organization in a public parking lot, a highway toll station, etc., including multiple public charging piles with a power ranging from 200 kilowatts to 600 kilowatts; it can also be set up by an individual user in a residential parking lot, including a parking space for a home charging device with a power of 5-10 kilowatts. No restrictions are made here.
  • the ideal operating temperature of a power battery often does not completely coincide with the ideal high-current charging temperature.
  • the ideal operating temperature of a lithium battery is generally between 20 and 35 degrees Celsius.
  • the capacity of the battery decays and the power release performance decreases; when the temperature of the battery is above this range, the risk of self-discharge of the battery increases, and both the available capacity and the service life will decrease.
  • the ideal charging temperature of a lithium battery is often higher than this temperature range.
  • the correspondence between the state of charge (SoC) of a lithium battery, the ideal charging temperature, and the charging current can be referred to in Table 1 below.
  • the battery charge is generally expressed as the state of charge (SoC), but the battery charge can also be expressed as ampere-hours (Ah).
  • the charging MAP can also be expressed as the correspondence between the state of charge, charging temperature, and charging voltage of a lithium battery, which will not be repeated here.
  • the maximum charging current corresponding to the period when the lithium battery is charged from 30% to 40% is 400A (see the "Temperature 13" row and the "40%” column in Table 1).
  • the ideal charging temperature of the lithium battery is about 50 degrees Celsius. That is, the lithium battery can be charged with a maximum charging current of 400A when the battery temperature is about 50 degrees Celsius. If the temperature of the lithium battery drops to 25 degrees Celsius, the charging equipment can only charge the lithium battery with a maximum current of 270A (see the "Temperature 11" row and the "40%” column in Table 1).
  • FIG. 4 is a schematic diagram of the SoC and charging current curves of the vehicle 1000 changing over time when charging.
  • the thermal management system of the vehicle 1000 adjusts the temperature of the battery 100 to a range of 20 to 35 degrees Celsius (for example, 30 degrees Celsius).
  • the battery management system of the vehicle 1000 first preheats the battery 100 to the charging temperature (45 degrees Celsius) of the maximum charging current corresponding to the current battery power (SoC is 30%) in the first 5 minutes of charging. No charging current flows during the preheating stage of the battery 100.
  • the charging pile 400 When the temperature of the battery 100 reaches 45 degrees Celsius, the charging pile 400 quickly charges the battery 100 with a maximum charging current of 320 amps, and gradually lowers the maximum charging current as the battery power increases. Referring to FIG4 , the total time consumed to charge the battery 100 from 30% to 80% is 23.7 minutes.
  • the thermal management system heats the battery 100 by, but is not limited to, utilizing high-frequency charging and discharging between battery packs, utilizing an electric heating network wrapped around the outside of the battery cell for heating, and utilizing the heat generated by the battery during charging. It can be seen that the charging pile 400 needs to wait for the battery 100 to be heated to a specific temperature before it can charge the battery 100 using the high-rate charging protocol it supports. The charging capacity of the charging pile 400 is not utilized during the preheating phase, resulting in a waste of time.
  • the charging pile 400 when the temperature of the battery 100 is lower than the ideal charging temperature, the charging pile 400 first charges the battery 100 of the vehicle 1000 with a small current (e.g., 250 amperes) lower than the maximum charging current, and gradually increases the charging current as the temperature of the battery 100 rises until the maximum charging current is reached. Although there is no separate preheating stage in this scheme, the charging pile 400 cannot quickly charge the battery 100 at the maximum charging current throughout the charging stage, which also prolongs the charging time of the battery 100.
  • a small current e.g. 250 amperes
  • the thermal management system of the vehicle 1000 first cools the battery 100 to below 50 degrees Celsius before charging the battery 100. This will not be described in detail here.
  • Some embodiments of the present disclosure provide a method for charging thermal management of a vehicle.
  • the method of the embodiment of the present disclosure can be performed by the vehicle 1000 and the server 3000 of Figure 5 respectively, or a part of the steps are performed separately, without limitation.
  • the steps of the method are performed by the vehicle 1000.
  • the vehicle 1000 establishes a communication link with the server 3000 through a wireless communication method such as a cellular network.
  • a communication link is established between the server 3000 and the charging station 2000 through wireless or wired communication.
  • the server 3000 can be directly connected to the charging station 2000, or it can be indirectly obtained through one or more other servers.
  • the status information of the charging station 2000 can be performed by the charging station 2000.
  • the server 3000 is a management platform built by a vehicle manufacturing company or a battery manufacturing company, and the vehicle 1000 can exchange information with the server 3000 through an on-board application (Application).
  • the server 3000 obtains the status information of the charging station 2000 by connecting to an information service platform set up by the charging station operator, wherein the information service platform is used to summarize information such as the location of the charging station, the charging pile information, whether it is being used, and the time period that can be reserved.
  • the method of this embodiment includes the following steps: the vehicle 1000 obtains the current vehicle position of the vehicle 1000, the current remaining power of the battery 100, the current battery temperature, and the battery charging parameter information.
  • the vehicle 1000 obtains the charging device charging parameter information of the corresponding charging device (charging pile 400) according to the current vehicle position.
  • the vehicle 1000 determines the thermal management strategy of the battery 100 according to the current remaining power, the current battery temperature, the battery charging parameter information, and the charging device charging parameter information.
  • the battery charging parameter information includes the battery capacity of the battery 100, and also includes the correspondence between the maximum charging current, state of charge and battery temperature of the battery 100.
  • the charging parameter information of the charging device includes the maximum charging voltage, maximum charging current and whether reservation is available supported by the charging pile 400.
  • the battery capacity reflects the amount of power stored in the battery, usually expressed in ampere-hours (Ah).
  • the thermal management strategy of the battery 100 includes adjusting the operating parameters of at least one of the heater, cooling pipe, motor 30 operation mode and kinetic energy recovery mode, raising or lowering the battery 100 to the target temperature, or changing the control strategy of the uniformity of the target temperature of each battery pack in the battery 100.
  • the aforementioned target temperature is determined based on the correspondence between the maximum charging current, battery power and battery temperature of the battery 100 and the correspondence between the maximum charging current supported by the charging pile 400.
  • the user can determine in advance a plan to adjust the thermal management strategy of the battery 100 while driving the vehicle 1000 to the charging station 2000, so that when the vehicle 1000 arrives at the charging station 2000 for charging, the battery temperature of the battery 100 is adapted to the output capacity of the charging pile 400, thereby effectively reducing the charging time.
  • Some embodiments of the present disclosure also provide a charging thermal management method for a vehicle.
  • FIG6 is an interactive diagram of the battery charging control method provided in this embodiment.
  • the method can be performed by the vehicle 1000 or the server 3000 of FIG5 separately in all steps, or separately in part of the steps, which is not limited here.
  • the method includes the following steps:
  • Step S101 Obtaining a charging query request from a user.
  • the vehicle system (in-vehicle infotainment system, hereinafter referred to as the vehicle system) of the vehicle 1000 receives a charging query request from the user.
  • the user wakes up the voice assistant application installed in the vehicle system in any interface, and inputs the command word "I want to charge” to the vehicle system through voice to trigger the vehicle 1000 to perform the operation of querying the charging station.
  • the server 3000 can obtain the user's charging query request through the vehicle 1000.
  • the vehicle 1000 when the vehicle 1000 detects that the current remaining power (SoC) of the battery 100 is lower than a set threshold, the vehicle 1000 actively triggers a charging query request without obtaining a charging query request from the user, thereby reducing the user's operating burden.
  • SoC current remaining power
  • Step S102 Query the information of surrounding charging stations based on the current vehicle location and battery information.
  • the vehicle 1000 sends the current vehicle position and battery information to the server 3000 via a 4G/5G wireless link, and the server 3000 queries the charging station located near the vehicle 1000 based on the received vehicle position.
  • the vehicle position may be a geographical coordinate position obtained by a global positioning system (GPS) or the like set on the vehicle 1000 or the user's mobile phone terminal.
  • GPS global positioning system
  • the vehicle position may also be obtained based on indoor positioning technology, for example, by receiving a short-range iBeacon signal from an iBeacon base station set in the charging station for positioning, thereby ensuring that the battery temperature can be pre-adjusted when queuing in the charging station.
  • the above-mentioned battery information may include the battery power (SoC), state of health (SoH) and battery identification, battery model, battery temperature, and battery charging parameter information of the battery 100. At least a portion of the above-mentioned parameters may be viewed through the vehicle system or dashboard of the vehicle 1000.
  • the battery charging parameter information includes the required charging current, required charging voltage, required charging power, charging protocol identifier supported by the battery, or at least a part of a mapping table (such as Table 1) that characterizes the corresponding relationship between the state of charge, temperature and charging current of the battery.
  • the required charging current is the maximum charging current supported by the battery; the required charging voltage is the maximum charging voltage supported by the battery; and the required charging power is the maximum charging power supported by the battery. In other embodiments, for safety and other considerations, the required charging current may be slightly lower than the maximum charging current supported by the battery.
  • the battery charging parameter information includes the maximum charging current and battery capacity corresponding to the battery 100 under the current SoC. In some embodiments, the battery charging parameter information is stored in the storage chip of the battery management system of the battery 100 during the manufacturing stage of the battery 100. In other embodiments, the server 3000 may also store all or at least a part of the battery charging parameter information corresponding to the battery model of the battery 100.
  • the server 3000 stores a mapping table (see Table 1) of the corresponding relationship between the state of charge, battery temperature and battery charging current of the battery 100.
  • the server 3000 receives the battery information containing the identification of the battery 100 from the vehicle 1000, the server 3000 queries and obtains the mapping table of the corresponding relationship between the state of charge, battery temperature and battery charging current of the battery 100 according to the identification of the battery 100.
  • the battery charging parameter information may not include the mapping table, but only includes the identification of the battery 100 and the maximum charging current or maximum charging voltage of the battery 100.
  • the aforementioned battery charging parameter information may be the same as all or part of the information in the handshake message between the vehicle and the charging pile when the vehicle establishes an electrical connection with the non-vehicle charger (charging pile).
  • the battery temperature of the battery 100 may be the highest temperature, average temperature of the multiple battery cells 20 constituting the battery 100, or the battery temperature displayed by the vehicle system/instrument panel, etc.
  • the data frame sent by the vehicle 1000 to the server 3000 for querying the surrounding charging stations can be referred to FIG. 7a.
  • the charging parameter information of the battery 100 can be obtained.
  • Step S103 Obtain the location of the charging station, reservation availability, and supported charging protocol information.
  • the server 3000 queries the charging stations within a certain distance from the vehicle 1000 through the geographic information system, and obtains the geographic location of these charging stations, the availability of charging piles, and the supported charging protocol information.
  • the server 3000 regularly receives the geographic location of each charging station, the availability of charging piles, the name of the charging protocol supported by the charging piles, the maximum output power, the maximum output voltage or the maximum output current, and caches them in the database.
  • the server 3000 receives a charging query request sent from the vehicle 1000, it directly queries the location, availability of reservations, and supported charging parameter information of the charging station from the database, thereby increasing the speed of the query operation.
  • the data frame sent by each charging station to the server 3000 can refer to FIG. 7b
  • the charging parameter information of the charging device can be obtained by reading the data message sent by the charging station to the server.
  • the geographical location can be a geographical location coordinate;
  • the available reservation status can include one or more charging piles being in use, idle, idle after 15 minutes, waiting for the charging queue to be 2 vehicles, etc.;
  • the supported charging protocol information can include the maximum output voltage, maximum output current or maximum output power supported by the charging pile and other charging parameter information.
  • the information of the charging pile sent by the charging station 2000 to the server 3000 may include the available reservation status and supported charging protocols of all charging piles, or may only include the available reservation status and the maximum charging current and/or maximum charging voltage supported by one or more charging piles that are idle and support the fast charging protocol.
  • each charging pile can also send the charging parameter information of the charging pile to the server separately.
  • the charging parameter information sent by the charging pile to the server can be substantially the same as the handshake message between the charging pile and the vehicle when the vehicle and the charging pile establish an electrical connection.
  • Step S104 Send the screened charging thermal management strategy.
  • Server 3000 selects one or more charging stations with idle or soon-to-be idle reservable charging piles based on the usage of the queried charging piles, and then determines the predicted arrival time or predicted arrival time of vehicle 1000 from its current location to each charging station based on information such as the model of vehicle 1000, current geographic coordinates, SoC, geographic location of the charging station, road planning, etc., and sends the information to vehicle 1000.
  • the server 3000 or the vehicle 1000 matches the battery charging parameters supported by the battery 100 of the vehicle 1000 and the charging parameters of the charging equipment supported by the reservable charging pile, and determines the shortest predicted total charging time T total for the vehicle 1000 to charge to the preset charging power at each charging station according to the matched charging parameters.
  • the predicted total charging time T total can be obtained by adding the predicted arrival time T jouney and the predicted shortest charging time T charge .
  • the server 3000 or the vehicle 1000 recommends a charging station to the user according to the predicted total charging time T total or the predicted shortest charging time T charge .
  • the preset charging power can be set by the user according to his own car usage habits (for example, 100% or 80%), because the charging speed of the vehicle battery drops rapidly when the last 20% is charged, which takes a long time. Setting the preset charging power by the user can help the user better predict the actual charging time.
  • the data frame provided by the server 3000 to the vehicle 1000 can refer to Figure 7c. By reading the data message sent by the server to the vehicle, information related to the thermal management strategy can be obtained. According to the data frame, the vehicle 1000 prompts the user with a human-computer interaction interface of the charging station information (refer to FIG.
  • the time from the current time to the time when the user makes an appointment to start charging at the charging pile 400 can also be used as the arrival time. For example, the current time is 9 o'clock in the evening, and the user has made an appointment to charge at the charging pile 400 at 9:30, then the arrival time is 30 minutes.
  • the server 3000 calculates the shortest charging time based on the matching of the battery 100 of the vehicle 1000 under the current SoC with at least one of the maximum charging current, maximum charging voltage, or maximum charging power supported by the charging pile. In this embodiment, the server 3000 calculates the estimated shortest charging time based on the matching of the maximum charging current of the battery 100 of the vehicle 1000 under the current SoC with the maximum charging current supported by the charging pile.
  • the charging MAP of the charging protocol supported by the vehicle 1000 and the idle charging pile 400 located at the charging station 2000 is shown in Table 1.
  • the battery 100 supports a maximum charging current of no more than 400 amps when the SoC is 30%
  • the charging pile 400 supports a charging protocol with a maximum charging current of no more than 670 amps. Therefore, the charging protocol matched by the battery 100 and the charging pile 400 is a maximum charging current of 400 amps. That is, the matching charging parameters include a charging current of no more than 400 amps.
  • the server 3000 can obtain by querying Table 1 that the target battery temperature corresponding to the SoC of the battery 100 is 30% of the battery capacity, and the matching charging parameter is 400 amps is 50 degrees Celsius (see the "Temperature 13" row).
  • the matching charging parameter may also be less than the maximum charging current, for example, the matching charging parameter is 370 amps. In some embodiments, the matching charging parameter may also be the maximum charging voltage supported by the battery 100 and the charging pile 400.
  • the server 3000 may also adjust the target battery temperature and the shortest charging time according to the distance traveled by the vehicle 100 to the charging station and/or the battery power consumed by the battery being heated to the target battery temperature. For another example, if it is determined that the current temperature of the battery 100 cannot meet the maximum charging current that can be reached corresponding to the current SoC in the charging MAP, the server 3000 determines the temperature that the battery 100 can be adjusted to before the vehicle arrives at the charging station 2000, and the SoC after adjusting to the temperature, based on the predicted arrival time T jouney and the heating performance of the thermal management system of the vehicle 1000, to compensate for the predicted shortest charging time.
  • the charging MAP of the charging protocol supported by the vehicle 1000 and the charging pile 400 located at the charging station 2000 is shown in Table 1.
  • the server 3000 queries the location, reservation status and supported charging protocol information of the charging station 2000, as well as the energy consumption big data information of the vehicle model according to the vehicle location and battery information received from the vehicle 1000.
  • the server 3000 can determine that the current temperature of the battery 100 of the vehicle 1000 is 20 degrees Celsius, the current SoC of the battery 100 is 30%, and the maximum charging current of the charging protocol supported by the battery 100 and the charging pile 400 when the SoC is 30% is 400A (the 5th column of "Temperature 13"), and the ideal charging temperature corresponding to the maximum charging current is 50 degrees Celsius.
  • the predicted arrival time of the vehicle 1000 to reach the charging station 2000 is 15 minutes, and the battery 100 can rise from 20 degrees Celsius to 45 degrees Celsius during the 15-minute driving process.
  • the battery 100 is heated from 20 degrees Celsius to 45 degrees Celsius by the battery heating device, and it is estimated that 8% of SoC is consumed.
  • the vehicle 1000 is expected to consume 2% of SoC when driving for 15 minutes at the current battery power. Therefore, the vehicle driving and battery heating together consume about 10% of SoC.
  • the power consumed by heating the battery 100 can be compensated.
  • the distance between the vehicle 1000 and the charging station is greater than the preset threshold, only the battery power consumed by the vehicle 1000 when driving to the charging pile can be compensated, or the battery power consumed by heating and the battery power at the arrival can be compensated at the same time, so as to achieve a higher remaining power prediction accuracy.
  • the current battery power is compensated by the power consumed by heating and the battery power at the arrival, so as to obtain the target battery power.
  • the ideal charging temperature corresponding to the target battery power of 20% is 50 degrees Celsius, so the target charging temperature can be compensated to 50 degrees Celsius.
  • the temperature of the battery 100 cannot be heated to 50 degrees Celsius during driving, so the target charging temperature is still set at 45 degrees Celsius.
  • Server 3000 compensates the target temperature according to the battery capacity and SoC of battery 100 of vehicle 1000, i.e., the temperature of the maximum charging current corresponding to SoC 30% is compensated to the temperature of the maximum charging current corresponding to SoC 20%, and the minimum value of the compensated temperature and 45 degrees Celsius is taken.
  • the predicted shortest charging time after compensation T charge-fix t1 + t2 + t3 + t4 + t5 + t6 .
  • T total T charge-fix + T jouney .
  • the server 1000 sends the predicted total charging time T total corresponding to multiple charging stations to the vehicle 1000, so that the user can make an appointment for a charging station that can complete charging faster. Referring to FIG.
  • the vehicle 1000 receives information about 5 charging stations from the server 1000, and displays the options of 2 charging stations with a predicted charging time of less than 60 minutes to the user through the display screen of the vehicle system for the user to choose.
  • the vehicle 1000 sends the identifier of the charging station A selected by the user to the server 3000.
  • the server 3000 uses the charging parameter information of the charging equipment of charging station A as the charging equipment information of the corresponding charging equipment (charging pile).
  • the server 3000 calculates the expected shortest charging time according to the matching of the maximum charging voltage of the battery 100 of the vehicle 1000 under the current SoC and the maximum charging voltage supported by the charging pile.
  • Step 105 Make a reservation for a charging station according to the selected charging thermal management strategy.
  • the user selects the charging pile 400 of the charging station 2000 that he wishes to reserve through the vehicle system of the vehicle 1000, and sends the identification (ID) of the charging pile 400 to the server 3000.
  • the server 3000 reserves the charging pile 400 for the vehicle 1000 according to the identification of the charging pile 400 and the identification of the vehicle 1000. Specifically, the server 3000 sends the identification of the vehicle 1000, the predicted arrival time, the commonly supported charging protocol, the predicted shortest charging time, etc. to the charging pile 400, and the charging pile 400 reserves the use time of the vehicle 1000 according to the above information.
  • the current time is 20:10
  • the predicted arrival time of the vehicle 1000 is 15 minutes
  • the predicted shortest charging time is 20 minutes
  • the preset redundant time is 30 minutes
  • the charging pile 400 reserves the reservation use time from 20:10 to 21:15.
  • the server 3000 further sends a thermal management strategy to the vehicle 1000, so that the vehicle 1000 adjusts the temperature of the battery 100 to a temperature close to the ideal charging temperature (e.g., 45 degrees Celsius) on the way to the charging pile 400.
  • the ideal charging temperature corresponds to at least one of the maximum charging current, maximum charging voltage, or maximum charging power supported by the battery 100 and the charging pile 400.
  • Step 106 Perform thermal management on the battery of the vehicle according to the preset charging plan and the actual position of the vehicle.
  • the vehicle 1000 uses the thermal management system to execute the aforementioned thermal management strategy of the charging pile 400 corresponding to the charging station 2000 on the battery 100, so that the temperature of the battery 100 reaches or approaches the ideal charging temperature before the vehicle 1000 arrives at the charging station 2000.
  • the hardware structure of the thermal management system of the vehicle 1000 can be seen in FIG10 .
  • the battery 100 is composed of a plurality of battery packs.
  • the battery management system (BMS), drive module, high-voltage relay, heater, refrigerator and temperature sensor group together constitute the thermal management system of the battery 100.
  • the heater is composed of a positive temperature coefficient heating resistor element or a silicone heating film, which is used to heat the battery pack.
  • the refrigerator is composed of a coolant circulation pipeline connected to the air conditioning system of the vehicle 1000, which is used to reduce the temperature of the battery pack.
  • the BMS periodically monitors the temperature of the battery cells in the battery pack through a temperature sensor, and manages the temperature of the battery 100 using a heater and a refrigerator, thereby ensuring that the temperature of the battery 100 is maintained within a set temperature range during the driving of the vehicle 1000.
  • the vehicle control unit (VCU) and the in-vehicle infotainment system also known as the vehicle system
  • the thermal management strategy may also include the degree of balance between the temperatures of each battery cell, etc.
  • executing the thermal management strategy to change the temperature of the battery pack includes starting the heater, increasing or decreasing the operating power of the refrigerator, decreasing the operating efficiency of the motor, and changing the kinetic energy recovery mode.
  • the thermal management strategy to change the temperature of the battery pack includes starting the heater, increasing or decreasing the operating power of the refrigerator, decreasing the operating efficiency of the motor, and changing the kinetic energy recovery mode.
  • the battery temperature can be increased more quickly than heating the battery when the vehicle is stationary, so that the battery reaches the temperature required for high-speed charging.
  • the kinetic energy recovery mode level of the vehicle 1000 can be increased to convert the kinetic energy recovered during the deceleration or braking phase into thermal energy of the battery, thereby increasing the temperature of the battery.
  • the thermal management strategy includes a target battery temperature. In some other embodiments, the thermal management strategy also includes a correspondence between the distance of the actual position of the vehicle 1000 from the charging station 2000, the arrival distance of the vehicle 1000, or at least one of the arrival time and the battery temperature. For example, when the arrival time T jouney is 20 minutes, the current battery temperature is 30 degrees Celsius, and the target battery temperature is 50 degrees Celsius, the thermal management strategy may be that the thermal management system raises the temperature of the battery 100 by 1 degree Celsius for every 1 minute of travel of the vehicle 1000 until the temperature of the battery 100 reaches 50 degrees Celsius. Among them, the arrival time may be the reservation time from the reserved charging pile 400, or it may be the predicted time for the vehicle 1000 to move to the charging pile 400.
  • the distance between the current position of the vehicle 1000 and the charging station 2000 is 20 kilometers.
  • the vehicle 1000 detects the distance to the charging station 2000 every 30 seconds during a certain period.
  • the battery 100 is heated to 35 degrees Celsius;
  • the distance between the vehicle 1000 and the charging station 2000 is 10 kilometers to 15 kilometers, the battery 100 is heated to 40 degrees Celsius;
  • the distance between the vehicle 1000 and the charging station 2000 is more than 25 kilometers, the battery heating is stopped. In this way, the flexibility of heating is improved and unnecessary power consumption is avoided.
  • Step 107 Charge the battery of the vehicle according to the charging preheating plan and the battery information.
  • the vehicle 1000 After the vehicle 1000 enters the charging station 2000, the vehicle 1000 is connected to the charging pile 400 via a charging cable. After the charging pile 400 authenticates the vehicle 1000, it charges the vehicle 1000 according to the received commonly supported charging protocol (refer to Table 1 and Figure 8). According to the thermal management strategy, the vehicle 1000 continues to adjust the temperature of the battery 100 during the charging stage so that the battery 100 can charge the battery 100 at a larger charging power at each state of charge.
  • the commonly supported charging protocol is sent to the vehicle 1000 and the charging pile 400 by the server 3000 during steps 103 to 105.
  • the commonly supported charging protocol can be obtained through the handshake protocol message sent when the vehicle 1000 and the charging pile 400 are connected via a charging cable. Thereby, it is ensured that the vehicle 1000 can maintain a larger charging power during the charging process, thereby shortening the charging time.
  • the battery can be heated in advance according to the matching condition between the battery and the charging device, thereby effectively reducing the charging time of the vehicle.
  • Some embodiments of the present disclosure also provide a charging thermal management method for a vehicle.
  • FIG10 is a schematic diagram of a mobile terminal remotely booking a charging pile provided in some embodiments of the present disclosure.
  • a wireless communication link is established between the vehicle 1000 and the server 3000 through a communication method such as a cellular network.
  • a communication link is established between the server 3000 and the charging station 2000 through wireless or wired communication.
  • the server 3000 may be directly connected to the charging station 2000 without other servers, or may be indirectly obtained through one or more other servers (for example, a server set up by a power company, etc., which summarizes the status information of multiple charging stations), without limitation.
  • a user establishes a wireless communication link between a mobile terminal 5000 and the vehicle 1000 through a smart phone.
  • the wireless communication link between the mobile terminal 5000 and the vehicle 1000 can be based on wide area communication technologies such as cellular networks such as 4G/5G, as well as near field communication technologies such as WiFi and Bluetooth.
  • a wireless communication link can also be established between the mobile terminal 5000 and the server 3000 to obtain information about the charging station 2000 and book a charging pile 400.
  • the method of the present disclosure can also be triggered by the mobile terminal 5000.
  • the method can be performed by the vehicle 1000, the mobile terminal 5000 or the server 3000 of FIG. 10 to perform all steps separately, or to perform part of the steps separately, and the mobile terminal 5000 will be used as an example for description below.
  • FIG11 is an interactive diagram of a battery charging control method provided in this embodiment. Referring to FIG11 , this embodiment includes the following steps:
  • S201 queries the user's charging query request.
  • the user triggers a charging query request through the human-computer interaction interface of the mobile device 5000 (see Figures 14-16).
  • S202 obtains vehicle location and battery information.
  • the mobile device 5000 queries the vehicle 1000 for the vehicle location and battery information of the vehicle 1000.
  • the battery information 1000 includes the geographic coordinates of the vehicle 1000, the ambient temperature, the state of charge of the battery 100, the state of health (SoH), the battery model, battery temperature, supported charging protocol, etc. of the battery 100.
  • the battery temperature of the battery 100 can be the highest temperature or average temperature of the battery cell, or the battery temperature can be viewed by the user through the vehicle system, etc.
  • the mobile device 5000 communicates with the vehicle 1000 via near field communication technologies such as WiFi and Bluetooth, it is also possible to use the address location information of the mobile device 5000 itself as the vehicle location of the vehicle 1000 without querying the vehicle 1000 for the geographic location of the vehicle 1000.
  • near field communication technologies such as WiFi and Bluetooth
  • Step S203 Query the information of surrounding charging stations based on the vehicle location and battery information.
  • the mobile terminal 5000 sends the current vehicle location and battery information to the server 3000 via a wireless link, and queries the charging station information near the current location of the vehicle 1000. This step is substantially the same as step S102 of the previous embodiment, and will not be described in detail herein.
  • Step S204 Obtain the location of the charging station, reservation availability, and supported charging parameters.
  • the server 3000 queries the charging station locations, available reservations, and supported charging parameters from multiple charging stations including the charging station 2000. This step is substantially the same as step S103 of the previous embodiment, and will not be described in detail herein.
  • Step S205 Send the screened charging management plan.
  • the server 3000 screens the charging stations according to the preset standard, and sends the charging thermal management solutions of the screened charging stations to the mobile terminal 5000. This step is substantially the same as step S104 of the previous embodiment, and will not be described in detail herein.
  • Step S206 Make a reservation for a charging station according to the selected charging management solution.
  • the mobile terminal 5000 receives the charging management scheme selection command from the user, and reserves the charging station 2000 according to the selected charging management scheme. This step is substantially the same as step S105 of the previous embodiment, and will not be described in detail here.
  • Step S207 Sending an instruction to execute the selected charging thermal management solution.
  • the mobile terminal 5000 sends a command for executing the selected charging thermal management scheme to the vehicle 1000 .
  • Step S208 Execute a thermal management plan for the battery of the vehicle according to the charging preheating plan and the real-time position of the vehicle.
  • the vehicle 1000 executes a thermal management plan for the battery 100 according to the charging preheating plan and the real-time position of the vehicle 1000. This step is substantially the same as step S106 of the previous embodiment, and will not be described in detail herein.
  • Step S209 charging the battery of the vehicle according to the charging preheating plan and the vehicle information.
  • the battery management system (BMS) of the vehicle 1000 charges the battery of the vehicle according to the charging preheating scheme and vehicle information. This step is basically the same as step S107 of the previous embodiment and will not be repeated here.
  • the vehicle 1000 can still be remotely controlled to preheat the battery.
  • Some embodiments of the present disclosure also provide a vehicle charging thermal management method, which is applicable to a situation where the vehicle is located near a charging device.
  • vehicle 4000 occupies charging pile 400 for charging.
  • Vehicle 1000 queues in charging station 2000, waiting for an idle charging pile.
  • vehicle 1000 can establish a communication link with charging station 2000 through near-field communication methods such as Bluetooth and RFID, make an appointment for a charging pile that is about to be idle (such as charging pile 400), and perform thermal management on battery 100 in advance during the waiting period, thereby reducing the total charging time.
  • near-field communication methods such as Bluetooth and RFID
  • this embodiment includes the following steps:
  • Step 301 Broadcast the reservation status and charging parameters of the charging pile.
  • the charging station 2000 periodically transmits a Bluetooth beacon frame in the station, and the Bluetooth beacon frame includes the reservation status and charging information of one or more charging piles in the charging station 2000.
  • the reservation status includes the predicted idle time of each charging pile, the queue waiting time, etc.
  • the charging parameters include the maximum charging voltage and/or maximum charging current supported by each charging pile.
  • the charging station 2000 may also send information such as the usage of one or more charging piles and the supported charging protocols to the server 3000 , so that the vehicle 1000 can obtain the above information by querying the server 3000 .
  • Step 302 Display optional thermal management strategies based on the available reservation status and charging parameters of the charging pile, as well as battery information.
  • the vehicle 1000 receives information about one or more charging piles from the charging station 2000, matches the battery information with the charging parameter information of each charging pile, and obtains matching charging parameters.
  • the battery information includes the battery capacity, remaining power, charging current, and charging voltage of the battery 100.
  • the matching charging parameter may be the maximum charging voltage supported by the charging pile and the battery 100.
  • the vehicle 1000 calculates the target temperature and predicted charging time of the battery 100 for each charging pile, and prompts the user with the above one or more charging piles and their corresponding predicted charging time through the display screen of the vehicle system.
  • Step 303 Reserve a charging station according to the selected charging thermal management strategy.
  • Step 304 Perform thermal management on the battery of the vehicle according to the selected charging thermal management strategy.
  • Step 305 Perform thermal management on the battery of the vehicle according to the charging preheating plan and vehicle information.
  • the vehicle 1000 reserves the charging pile 400 and executes the thermal management strategy of the corresponding charging pile 400 on the battery 100.
  • the thermal management strategy includes raising or lowering the battery 100 to the target temperature by adjusting the working parameters of the heater and the cooling pipe. No further details are given here.
  • Some embodiments of the present disclosure also provide a vehicle charging control method, which can be applied to a vehicle system (vehicle multimedia entertainment terminal), a vehicle dashboard, a smart phone, a computer and other electronic devices.
  • vehicle system vehicle multimedia entertainment terminal
  • vehicle dashboard vehicle dashboard
  • smart phone smart phone
  • computer computer and other electronic devices.
  • the method of this embodiment is described below using a vehicle system as an example.
  • the vehicle can refer to FIG5 .
  • the method comprises the following steps:
  • Step S401 displaying a first interface and detecting a first operation, where the first operation is used to trigger a query of a charging device.
  • the vehicle 1000 displays a first interface U810 for receiving user operation commands through the display screen of the vehicle system.
  • the first interface may be a page of a voice assistant, a page of a navigation system, or any other page that can receive voice or touch operation commands (for example, referring to FIG. 18 , the desktop main interface of the vehicle operating system).
  • the vehicle system receives the user's voice operation command "I want to charge" through the first interface U810, and displays a second interface U820 on the display screen.
  • Step S402 In response to the received first operation, a second interface is displayed, where the second interface includes charging device identifiers and charging times of one or more first charging devices.
  • the vehicle 1000 displays the second interface U820 on the display screen.
  • the second interface can be displayed as replacing the first interface as a whole, and can be displayed in different display screen areas from the first interface, covering a portion of the first interface, or as a graphic element of the first interface, which is not limited here.
  • the second interface U820 includes one or more charging device identifiers of the first charging device and the predicted charging time corresponding to the first charging device.
  • the first charging device can be a charging station or a charging pile.
  • the charging device identifier is used to distinguish different charging devices, and the charging device identifier can be obtained from a server or a charging device.
  • the vehicle 1000 queries the charging stations or charging piles within a certain distance from the vehicle 1000 through the geographic information system according to its geographical coordinates (or a combination of geographical coordinates and current SoC), and uses these charging stations or charging piles as first charging devices, and displays them in the second interface U802 according to the charging time sequence.
  • the vehicle 1000 also obtains the battery power (SoC) of its power battery, the battery charging parameter information, and the charging parameters of the first charging device, so as to calculate the predicted charging time corresponding to one or more of the first charging devices.
  • the battery charging parameter information includes the corresponding relationship between the battery power (state of charge), the battery temperature and the battery charging current of the battery; the charging device charging parameter information includes the charging current corresponding to the first charging device.
  • the battery charging parameter information includes the corresponding relationship between the battery power, the battery temperature and the battery charging voltage of the battery; the charging device charging parameter information includes the charging voltage corresponding to the first charging device.
  • the charging time can be calculated based on the matching of the battery charging parameter information and the charging parameter information of the charging device (for example, the maximum charging current supported by the battery and the first charging device) and the battery power.
  • the charging time may be a predicted minimum charging time or a predicted total charging time.
  • the predicted shortest charging time is calculated based on the matching of the maximum charging current or maximum charging voltage supported by the battery 100 of the vehicle 1000 and the charging pile under the current SoC.
  • the predicted total charging time includes the shortest charging time and the predicted arrival time.
  • the predicted arrival time is the time required for the vehicle 1000 to travel to the first charging device, calculated based on the position of the vehicle 1000 and the position of each first charging device.
  • the specific calculation method of the charging time can be referred to step S104 of the embodiment of the present disclosure, which will not be repeated here.
  • the second interface may also include charging parameter information, location information, estimated arrival time, etc. of the first charging device, so as to help the user comprehensively select the reserved charging device.
  • the charging parameter information includes at least one of the charging rate, maximum charging current, and maximum charging voltage supported by the charging pile.
  • the method further includes step S400, obtaining a preset charging power set by the user.
  • the vehicle displays an interactive interface U805 on the display screen, and the user inputs a preset charging power for predicting the charging time.
  • the preset charging power is 80% SoC.
  • the vehicle 1000 calculates the shortest charging time of the battery 100 when charging at the charging pile based on the difference between the current battery power of the battery 100 and the preset charging power, the battery capacity of the battery 100, and the maximum charging current supported by the battery 100 and the charging pile under the current SoC, and displays it on the second interface.
  • the preset charging power can be set by the user according to his own car usage habits (for example, 100% or 80%), because the charging speed of the vehicle's battery drops rapidly when charging the last 20%, which takes a long time. Setting the preset charging power by the user can help the user better predict the actual charging time.
  • Step S403 Detect a second operation, wherein the second operation is used to select a second charging device from one or more of the first charging devices. While the second interface is displayed, the vehicle 1000 detects a second operation from the user on the second interface. The second operation may be clicking on the option of the first charging device on the second interface with a finger, or a voice operation instruction. The charging device identifier of the first charging device displayed on the second interface may be used to prompt the user to trigger the second operation. In addition, while the first interface and the second interface are displayed at the same time, receiving a voice operation command from the user is deemed to have received an operation on the second interface. Exemplarily, the vehicle 1000 detects a voice operation command of "charging station A (charging device identifier)" issued by the user, uses “charging station A" as the second charging device, and displays the third interface U830 on the display screen of the vehicle system.
  • a voice operation command of "charging station A (charging device identifier)" issued by the user, uses “charging station A
  • Step S404 In response to the second operation, display a third interface, wherein the third interface includes the charging time of the second charging device.
  • the third interface U803 is used to prompt the user with the real-time predicted charging time corresponding to “Charging Station A”.
  • the third interface is an interface of a navigation application.
  • the third interface simultaneously displays the predicted shortest charging time and the arrival time of the vehicle at “Charging Station A” (second charging device).
  • Step S405 In response to a change in at least one of the vehicle's location, battery power, and a usage status of the second charging device, updating the charging time of the third interface.
  • the predicted charging time is affected by factors such as the location of the vehicle, the battery level (SoC), and the usage of the second charging device
  • the predicted charging time needs to be recalculated and updated on the third interface, so as to display the real-time predicted charging time to the user.
  • the usage of the second charging device may include whether the second charging device is being used or the reservation status. In some embodiments, if other vehicles that are using "Charging Station A" end charging ahead of schedule, the predicted charging time of the vehicle 1000 may be shortened, so the charging time on the third interface can also be updated.
  • Step S406 In response to the received second operation, executing a thermal management strategy for the vehicle according to the second charging device.
  • the thermal management strategy includes adjusting the temperature of the battery to a charging temperature corresponding to the "charging station A" that can provide the maximum charging speed for the current battery power by controlling at least one of the heater, the cooler, the motor operation mode or the kinetic energy recovery mode.
  • the current battery power (SoC) of the vehicle 1000 is 30%, and the current battery temperature is 35 degrees Celsius.
  • SoC the current battery power
  • Table 1 it can be obtained that the maximum charging current supported by the battery 100 and the charging equipment of the charging station A is 400A, and the target battery temperature matching the charging parameter of 400A is 50 degrees Celsius (see the "Temperature 13" row).
  • the vehicle 1000 then executes the thermal management strategy, that is, heating the battery 100 from 35 degrees Celsius to 50 degrees Celsius through the electric heating network.
  • the method according to this embodiment can help users understand the actual charging time of each charging device, thereby saving charging time.
  • the computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected via a system bus.
  • the processor is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium.
  • the communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, an operator network, NFC (near field communication) or other technologies.
  • WIFI wireless fidelity
  • NFC near field communication
  • the computer program is executed by the processor, a data acquisition method as involved in the above embodiments is implemented.
  • the display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen
  • the input device of the computer device may be a touch layer covered on the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.
  • Some embodiments of the present disclosure further provide a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the method of any one of the above embodiments when executing the computer program.
  • Some embodiments of the present disclosure further provide a vehicle, which includes the computer device of the above embodiments and a battery, wherein the computer is electrically connected to the battery and is used to execute the steps of the method of any one of the above embodiments.
  • Some embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program, which implements the steps of the method of any of the above embodiments when executed by a processor.
  • Some embodiments of the present disclosure also provide a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium.
  • a processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device performs the steps of the method of any of the above embodiments.

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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)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un procédé de gestion thermique pendant la charge d'un véhicule (1000), un dispositif et un support. Le procédé de gestion thermique pendant la charge comprend les étapes consistant à : acquérir une position de véhicule actuelle, un niveau de puissance de batterie actuel, une température de batterie actuelle et des informations de paramètre de charge de batterie ; acquérir des informations de paramètre de charge de dispositif de charge d'un dispositif de charge correspondant en fonction de la position de véhicule actuelle ; et déterminer une stratégie de gestion thermique d'une batterie (100) en fonction du niveau de puissance de batterie actuel, de la température de batterie actuelle, des informations de paramètre de charge de batterie et des informations de paramètre de charge de dispositif de charge. La température de la batterie (100) peut être ajustée à l'avance pour s'adapter à la capacité de sortie d'une station de charge (400), ce qui permet de réduire efficacement la durée de la charge.
PCT/CN2022/130056 2022-11-04 2022-11-04 Procédé de gestion thermique pendant la charge d'un véhicule, dispositif et support WO2024092779A1 (fr)

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PCT/CN2022/130056 WO2024092779A1 (fr) 2022-11-04 2022-11-04 Procédé de gestion thermique pendant la charge d'un véhicule, dispositif et support
CN202280092712.3A CN118742460A (zh) 2022-11-04 2022-11-04 车辆的充电热管理方法、设备和介质

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