WO2024106875A1 - Système de gestion de durée de vie de batterie et procédé de charge de batterie l'utilisant - Google Patents

Système de gestion de durée de vie de batterie et procédé de charge de batterie l'utilisant Download PDF

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Publication number
WO2024106875A1
WO2024106875A1 PCT/KR2023/018162 KR2023018162W WO2024106875A1 WO 2024106875 A1 WO2024106875 A1 WO 2024106875A1 KR 2023018162 W KR2023018162 W KR 2023018162W WO 2024106875 A1 WO2024106875 A1 WO 2024106875A1
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WIPO (PCT)
Prior art keywords
charging
battery
power
battery life
management system
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PCT/KR2023/018162
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English (en)
Korean (ko)
Inventor
이동영
김부기
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스탠다드에너지(주)
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Publication of WO2024106875A1 publication Critical patent/WO2024106875A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • 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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • 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
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the following description is about a battery life management system and a battery charging method using the same. Specifically, a system for managing charging to increase battery life based on the charging profile information required for each type of device including the battery to be charged, and the same. This is about the charging method used.
  • UAV Uncrewed Aerial Vehicle
  • personal mobility is being proposed as mobile devices that require battery charging, as well as current electric vehicles, and the requirements for each type of device containing such a battery to be charged have been proposed.
  • a system for managing charging to increase battery life based on charging profile information is required.
  • a system for managing charging to increase battery life based on charging profile information required for each type of device including a battery to be charged and a charging method using the same are provided.
  • the device including the battery to be charged is an electric vehicle (EV)
  • EV electric vehicle
  • a request is made to the electric vehicle over time based on one or more of the manufacturer, vehicle type, or vehicle model of the electric vehicle.
  • the charging curve representing the amount of charging power, it is proposed to increase battery life by predicting in advance the section where the change in charging power per unit time is more than a predetermined standard and smoothing the charging curve.
  • the battery life extension charging method described above is defined as an advanced electric charging service, and a service model that provides a life extension charging service according to the user's selection is proposed.
  • ESS Electronicgy Storage System
  • a method of performing charging using a battery life management system comprising: obtaining required charging curve information for each type of device including a battery to be charged; Predict in advance a time section in which the change in charging power changes rapidly at a predetermined rate or more based on the required charging curve information; And limiting the charging power charged to the device including the battery in the pre-estimated time period, and reducing the change in charging power within the time period to below the predetermined rate, based on a battery life management system. Suggest a charging method.
  • a memory that stores charging curve information required for each type of device including a battery to be charged; a processor configured to predict in advance a time section in which a change in charging power changes rapidly at a predetermined rate or higher based on the charging curve information stored in the memory; and limiting the charging power charged to the device including the battery in the time interval predicted in advance by the processor, and performing charging to reduce the change in charging power within the time interval below the predetermined rate.
  • a battery life management system including a charger is proposed.
  • a charging service user selects a general charging service in the battery charging service providing system
  • the battery to be charged is providing the device with an amount of charging power according to charging curve information required by the device
  • the amount of charging power is limited and provided to the device in a time section when the change in the amount of charging power according to the charging curve information rapidly changes at a predetermined speed or more.
  • a charging service user may use any one or more of a plurality of types of charging service including advanced electric charging service and general charging service.
  • An interface configured to allow selection; a memory that stores charging curve information required by a device containing a battery to be charged; When the general charging service is selected through the interface, the amount of charging power according to the charging curve information is provided to the device, and when the advanced charging service is selected through the interface, the amount of charging power according to the charging curve information is provided to the device.
  • a battery charging service providing system that includes a processor configured to limit the amount of charging power and provide it to the device in a time section where the change rapidly changes at a predetermined rate or higher.
  • the device including the battery may include an electric vehicle, and the memory may determine the charging time based on one or more of the manufacturer, vehicle type, or vehicle model of the electric vehicle. It may be configured to store the charging curve information to indicate the amount of charging power required by the electric vehicle.
  • the charger limits the charging power charged to the electric vehicle based on a signal from the processor within the amount of charging power required by the electric vehicle according to the charging time to smooth the slope of the change in the amount of charging power over time. It is desirable to be configured.
  • the battery life management system may be configured to be included in a battery charging service providing system, wherein the charging service user may use a plurality of types of charging including an advanced electric charging service or a general charging service. It may include an interface configured to select one of the services, and the battery life management system may be configured to be activated when the advanced electric charging service is selected through the interface.
  • the advanced charging service may include a battery life extension charging service and a fast charging service
  • the battery life management system may select the battery life extension charging service in the battery charging service providing system. It can be activated.
  • the interface of the battery charging service providing system may be configured to display changes in expected lifespan when the battery life management system is activated.
  • the battery life management system additionally includes an ESS (Energy Storage System).
  • ESS Electronicgy Storage System
  • the ESS may be configured to suppress the instantaneous voltage drop of the grid.
  • the charging curve includes a low-speed charging section in which the charging time section in which the State of Charge (SoC) of the battery to be charged increases above the first standard, and charging at a low charging power below the second standard, ESS may be configured to assist power provided from the grid in a FR (Frequency Regulation) manner. Through this, ramping of power provided from the grid can be reduced.
  • SoC State of Charge
  • the charging curve includes a fast charging section in which the SoC (State of Charge) of the battery to be charged is low below the first standard and a high-speed charging section in which the charging power is higher than the second standard, and the ESS is It may be configured to provide auxiliary power in a section where power provided from the grid is temporarily interrupted.
  • SoC State of Charge
  • the ESS is preferably an ESS that supports an instantaneous charging speed above a predetermined standard, and in particular, it is proposed to be an ESS based on VIB (Vanadium Ion Battery).
  • a system for managing charging to increase battery life can be implemented based on charging profile information required for each type of device including a battery to be charged.
  • the change in charging power per unit time is based on one or more of the manufacturer, vehicle type, or vehicle model of the electric vehicle.
  • the battery life extension charging method described above is defined as an advanced electric charging service, and the life extension charging service can be provided according to the user's selection.
  • an ESS capable of high-speed charging is additionally provided to suppress the instantaneous voltage drop in the grid and reduce power ramping, especially in the low-speed charging section, thereby increasing battery life.
  • Figure 1 is a diagram to explain the concept of profiling each charging curve according to various types of vehicles in the battery life management system according to an embodiment of the present invention.
  • FIGS. 2 and 3 are diagrams for explaining the concept of obtaining charging curve information for each vehicle type according to a specific embodiment of the present invention.
  • Figure 4 is a diagram for explaining the concept of extending battery life according to an embodiment of the present invention.
  • Figure 5 is a diagram for explaining the concept of providing an advanced electric charging service according to an embodiment of the present invention.
  • FIGS. 6 and 7 are diagrams to explain the concept of providing grid power to a charger according to embodiments of the present invention.
  • FIG. 8 is a diagram illustrating the concept of performing charging to increase battery life for each charging curve section using ESS according to an embodiment of the present invention.
  • Figure 9 is a diagram for explaining the battery type applied to the ESS according to an embodiment of the present invention.
  • Figure 10 is a diagram for explaining the structure of VIB ESS according to an embodiment of the present invention.
  • one aspect of the present invention seeks to provide a system for managing charging to increase battery life based on charging profile information required for each type of device including a battery to be charged, and a charging method using the same.
  • Figure 1 is a diagram to explain the concept of profiling each charging curve according to various types of vehicles in the battery life management system according to an embodiment of the present invention.
  • an electric vehicle When looking at an electric vehicle as an example as a device containing a battery to be charged, as shown in FIG. 1, one or more of the manufacturer, vehicle type, or vehicle model of the electric vehicle is used (e.g., 10, 20 in FIG. 1). , 30, 40), a charging curve representing the amount of charging power required for the electric vehicle over time can be obtained.
  • the manufacturer, vehicle type, or vehicle model of the electric vehicle e.g., 10, 20 in FIG. 1). , 30, 40
  • a charging curve representing the amount of charging power required for the electric vehicle over time can be obtained.
  • the charging power of an electric vehicle can be set in various ways, but in this embodiment, as shown in FIG. 1, when the charging amount over time is indicated based on one or more of the manufacturer, vehicle type, or vehicle model of the electric vehicle, a similar charging curve is shown. You can check that this is being profiled.
  • FIGS. 2 and 3 are diagrams for explaining the concept of obtaining charging curve information for each vehicle type according to a specific embodiment of the present invention.
  • the state of the battery can be representatively expressed based on the state-of-charge (SoC), and the charge/discharge speed of the battery can be explained based on the charge/discharge rate (C-Rate). You can.
  • SoC state-of-charge
  • C-Rate charge/discharge rate
  • the charging rate and/or the discharging rate of the battery can be controlled by the charging/discharging rate (C-Rate).
  • Charge/discharge rate (C-Rate) refers to the measurement of current used to charge and/or discharge a battery.
  • discharging a specific battery at 1C-Rate or 1C means that a battery with a capacity of 10Ah (i.e., the amount of electricity when 10A (ampere) current flows for 1 hour) is fully charged and discharges at 10A for 1 hour. It means that (ampere) can be discharged.
  • SoC state of charge
  • FIG. 2 is a graph showing the charging strategy of vehicle model A of company A, where 210 in FIG. 2 is a graph showing the change in charging power and SoC over time, and 220 in FIG. 2 is the degree of change in output power per unit time. This is a drawing showing .
  • Company A's charging strategy for vehicle model A has a strategy of slowly changing the charging speed to stably increase SOC for each section.
  • 220 in Figure 2 represents the output power per unit time. It can be confirmed that the degree of change is maintained within a certain range.
  • FIG. 3 is a graph showing the charging strategy of company B's vehicle model C.
  • 310 in FIG. 3 is a graph showing the change in charging power and SoC over time, and 320 in FIG. 3 shows the degree of change in output power per unit time. This is the drawing shown.
  • Company B's vehicle charging strategy unlike Company A shown in Figure 2, has a method of gradually changing output when the SOC enters a specific section, and therefore, rapid changes in output may occur whenever the section changes. As shown at 310 in FIG. 3, it can be confirmed that the output change usually occurs within a few seconds, and as shown at 320 in FIG. 3, it can be confirmed that there is a time section in which the degree of change in output power per unit time is large. .
  • Figure 4 is a diagram for explaining the concept of extending battery life according to an embodiment of the present invention.
  • the battery life is improved by controlling the charger by predicting in advance the section 410a to 410e in which the degree of change in output power per unit time is more than a predetermined standard. It is proposed to increase .
  • the standard for calculating the section in which the degree of output change is greater than a predetermined standard was selected as a section with a change of more than 3 kW per second, but this is an example, and the predetermined standard is that of the processor/charger/PCS, which will be described later. It can be set in various ways depending on performance/configuration, etc.
  • the method of performing charging using the battery life management system includes charging curve information required for each type of device (e.g., electric vehicle, UAV, etc.) including the battery to be charged, as shown in FIG. 2 and obtained as shown in FIG. 3, and based on this, the time intervals 410a to 410e in which the change in charging power rapidly changes at a predetermined speed or higher on the required charging curve information can be predicted in advance.
  • a type of device e.g., electric vehicle, UAV, etc.
  • the charging curve information required for each type of electric vehicle, etc. it is preferable to use information already obtained through repeated experiments rather than acquiring it in real time. Based on one or more of the vehicle type or vehicle model, the electric vehicle, etc. can be charged according to the charging time. It can be obtained through the amount of charging power required by the target device and stored in the memory.
  • the charger according to the present embodiment limits the charging power charged to the object battery, thereby reducing the change in charging power within the time interval below the predetermined standard. I suggest doing it.
  • the amount of power over time indicated by the charging curve shown in FIG. 4 represents the amount of charging strategy required by each charging target device over time.
  • the charging target device changes depending on time. Providing charging power beyond the required charging strategy may not have much meaning. In other words, if smoothing is performed by supplying power exceeding the charging amount according to the charging curve, the intended effect of extending battery life may not be achieved.
  • the slope of the electric power change which is the basis for smoothing, may be the same as the slope used when specifying the time section 410a to 410e in which the charging power changes rapidly beyond the predetermined speed.
  • the time intervals 410a to 410e in which the charging power changes rapidly above a predetermined speed are determined by the first standard (e.g. , 3 kW per second), but since the standard for smoothing within the predicted time intervals 410a to 410e is simply performed through power control in the corresponding time interval, a second standard (e.g., higher than this) is selected. , 1 kW per second), charging can also be performed in a way that extends battery life.
  • the first standard e.g. 3 kW per second
  • a second standard e.g., higher than this
  • Figure 5 is a diagram for explaining the concept of providing an advanced electric charging service according to an embodiment of the present invention.
  • the electric vehicle charging system 100 shown in FIG. 5 may include an electric vehicle 120 that receives power by wire (or wirelessly) and a charger 110 that controls transmission of power to the electric vehicle 120.
  • the charger 110 may include an interface 165 that displays the amount of power actually charged to the battery of the electric vehicle 120 and the amount of power consumed due to charging, respectively.
  • the battery life management system according to the embodiment described above with respect to FIG. 4 is configured to enable a charging service user to use an advanced electric charging service or It is proposed to be activated when the advanced electric charging service is selected among the general charging services 165a. That is, the electric vehicle charging system according to this embodiment provides an interface 165a that allows the user to select an advanced electric charging service, and can be configured to provide an advanced electric charging service according to the user's selection.
  • 'high-end electricity' refers to a type of charging service that extends the performance and lifespan of a vehicle, just like high-end gasoline, and provides a high level of service satisfaction even at a relatively high cost to the user.
  • Electricity refers to the form/method/technology of charging power.
  • Such advanced electricity may form a class of electric charging service such as optimized charging, ultra-fast charging, etc., as well as the battery life extension charging service and fast charging service 165b illustrated in FIG. 5.
  • the expected life change is displayed 165c.
  • This change in expected lifespan may indicate an increase in capacity predicted according to charge and discharge cycles when using an advanced charging service, compared to the capacity predicted according to charge and discharge cycles during general charging.
  • FIG. 5 shows an example in which the above-described interface 165 is attached to the charger 110, but this interface 165 is used for user devices (e.g., smartphones, PCs) linked to the charging system 100. Of course, it can also be provided through (e.g., etc.).
  • user devices e.g., smartphones, PCs
  • FIG. 5 shows an example in which the above-described interface 165 is attached to the charger 110, but this interface 165 is used for user devices (e.g., smartphones, PCs) linked to the charging system 100. Of course, it can also be provided through (e.g., etc.).
  • FIGS. 6 and 7 are diagrams to explain the concept of providing grid power to a charger according to embodiments of the present invention.
  • a device including a battery to be charged 630 may monitor the status of the battery, such as voltage/temperature, by including a BMS (Battery Management System).
  • the power supplied to the charging device including the battery/BMS 630 is supplied in AC form from the grid 610, and is converted to DC power by the PCS or the corresponding power conversion unit 620 and supplied. You can.
  • smoothing by limiting the power supplied to the charging target device 630 in a specific time unit is performed by limiting the power supplied to the charging target device 630 from the PCS 620. Separately from the water supply (S650) and the PCS (620), this may be performed through a processor (not shown) of the charger 110 of the embodiment of FIG. 5.
  • power from the grid is not only provided to the charging target device 630, but can also be shared with the surrounding power load 640 in the place where the charger is installed. Accordingly, problems such as a temporary interruption in the power provided to the charging target device 630 may occur.
  • ESS refers to a device that stores energy in various energy storage means and then supplies the stored power back to the grid when necessary.
  • the ESS that uses batteries as a means of energy storage is specifically referred to as BESS (Battery Energy Storage System), but in the following description, unless otherwise specified, it is assumed that the ESS is a BESS.
  • ESS consists of a battery, BMS, PCS, and energy management system (EMS).
  • a battery has one or more cells, a plurality of cells can form one module, and a plurality of modules can form a rack.
  • the ESS configured in this way can be connected to the power grid, electric grid, etc. to receive power.
  • Harmonics refer to waveforms in which physical electrical quantities corresponding to integer multiples, such as 2, 3, or 4 times, are generated unbalanced with respect to the fundamental frequency forming a sine curve, and the instantaneous voltage drop is the rated frequency.
  • ) refers to a phenomenon in which the voltage drops with a duration of about 0.5 to 30 cycles.
  • FIG. 8 is a diagram illustrating the concept of performing charging to increase battery life for each charging curve section using ESS according to an embodiment of the present invention.
  • the charging curve of the device to be charged is in the charging time section when the SoC of the battery to be charged increases to the first standard or higher (e.g., SoC of 80%), It may include a low-speed charging section in which charging is performed with low charging power below the second standard (for example, 80 kW).
  • This low-speed charging section can be viewed as a section where power is intentionally provided at a low rate in consideration of battery stability when the SoC of the battery has increased above the first standard. Therefore, changes in the power quality of the grid in these low-speed charging sections (830a, 830b, expressed as 'ramping' unless there is confusion) create an instantaneous power shock and are most likely to cause damage to the vehicle and/or battery. It means high.
  • the ESS assists the power of the grid through FR (Frequency Regulation) and supplies electricity as close to a sine wave of the correct frequency as possible to the PCS, thereby supporting the vehicle and/or vehicle battery.
  • FR Frequency Regulation
  • the explanation was focused on assisting power ramping (830a, 830b) in the section where low-speed charging is performed in relation to the life of the battery through the ESS.
  • the power of the grid is increased even in the high-speed charging area. This pause may reduce the impact on the vehicle/battery.
  • the battery applied to the ESS use a battery that can quickly support the power of the shaking grid as described above with reference to FIG. 8, and for this purpose, it is a type of water-based battery, proposed by the present applicant. This explains ESS based on vanadium ion battery (VIB).
  • VIB vanadium ion battery
  • Figure 9 is a diagram for explaining the battery type applied to the ESS according to an embodiment of the present invention.
  • FIG. 9 (A) exemplarily shows a system to which the LIB ESS (210), which is currently receiving the most popular attention among these various ESS batteries, is applied.
  • LIB has high energy density and power density, is about 3 times lighter than existing lead acid batteries, and is attracting attention because it can reduce space occupancy by 50-80% with high power density. In addition, it is possible to discharge 1-2% of the charge per month and maintain a long service life, and can be considered to have 5,000 battery cycles depending on the advantages and conditions of about 10 years of use.
  • VIB developed by the present applicant refers to a secondary battery that stores/releases energy electrochemically using vanadium ions as an active material.
  • active materials that participate in electrochemical reactions e.g., vanadium ions, H+ cations, water, sulfuric acid, etc.
  • VIB the active material within the cell and/or module changes and moves ions using internal electric fields, osmotic pressure, concentration difference, etc., and the active material releases energy through an electrochemical reaction within the cell and/or module. It performs a storage/release role.
  • Figure 9(B) shows a configuration to which the VIB ESS 140 using such a VIB is applied according to an embodiment of the present invention.
  • LIB heat generation and battery life are affected at high output, but in the case of VIB, stable high output is possible.
  • LIB has limitations such as 1C charging and 1C discharging, but VIB is capable of controlling input and output flow with high output.
  • the VIB ESS 140 controls both the grid 110 and the charger. Since assistance is possible with high output, the use of the VIB ESS (140) has the advantage of performing very efficient ESS charging and discharging management.
  • the system of the present invention is a very effective power supply system in that it can be preferably applied while ensuring safety in various auxiliary facilities. You can do it.
  • safe and efficient energy supply is possible through the use of VIB ESS (140), it can be used as a very effective, safe, and eco-friendly means of energy supply in areas such as energy conservation, energy environment, and realization of carbon neutrality.
  • the high-speed charging and discharging performance of the VIB is utilized as described above to measure the energy measured through a plurality of power meters (211, 212, and 220). Electric power can be used more efficiently. For example, when the measured value of the power meter 212, which measures the amount of power flowing into the charger, decreases rapidly, this can be supported by high-speed discharge, and the measured value of the power meter 220, which measures the amount of power flowing into the charger, decreases significantly. If it is below a predetermined standard, the VIB ESS (140) can be charged at high speed.
  • the term actual (theoretical) SoC is a concept to distinguish it from the SoC provided by the manufacturer. For safety reasons, the manufacturer generally provides the range without safety problems as 0% - 100% of the actual SoC range. In contrast, the actual (theoretical) SoC refers to an SoC that calculates the battery's full charge as 100% and full discharge as 0%.
  • LIB VIB fire hazard height doesn't exist Charge/discharge rate 0.2-0.5C 0.5 - 5 C (Max 10 C) Voltage range Existence of upper and lower limit voltage There is an upper limit voltage, the lower limit voltage is Actual SoC operating below 20% Impossible possible Features when repeating cycle Irreversible reaction due to phase change reversible reaction
  • Figure 10 is a diagram for explaining the structure of VIB ESS according to an embodiment of the present invention.
  • VIB ESS also includes components such as battery, BMS, PCS, and EMS.
  • the battery consists of a module in which 10-20 cells are grouped starting from the smallest cell unit, multiple modules constitute a pack, and multiple packs may constitute a system level, and in response to this structure, the BMS It may also have a hierarchical structure of cell BMS (not shown), module BMS (31; level 1), pack BMS (32; level 2), and system BMS (33; level 3).
  • each level refers to an operation level including the above-described BMS as well as other control configurations.
  • level 2 defines control with the level 1 control stage of the pack BMS 32 and control operations for the switch gear 34
  • level 3 specifies the system BMS 33 and PMS 35 described above.
  • the final level 4 may define control operations between a plurality of PMSs 35 and EMSs 36.
  • the switch gear 34 can control the battery and power lines (contactor, precharge, fuse), and the linear IC 37 can turn on the switch 38 by receiving a command from the pack BMS 32.
  • the type of battery applied to the ESS is exemplarily described as VIB (FIGS. 9(B) and 10) in contrast to LIB (FIG. 9(A)).
  • the type of battery applied to ESS does not need to be limited to VIB.
  • the ESS may utilize a vanadium redox battery (VRB), a polysulfide bromide battery (PSB), or a zinc-bromine battery (ZBB).
  • VRB vanadium redox battery
  • PSB polysulfide bromide battery
  • ZBB zinc-bromine battery
  • the battery life management system and battery charging method using the same according to the embodiments of the present invention as described above can be used not only for electric vehicle charging services but also for increasing the battery life of various charging devices.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Le présent document concerne un système de gestion de durée de vie de batterie et un procédé de charge de batterie l'utilisant. À cette fin, le procédé de charge utilisant un système de gestion de durée de vie de batterie comporte les étapes consistant à : acquérir des informations de courbe de charge requises pour chaque type de dispositif incluant une batterie à charger ; prédire à l'avance un intervalle de temps dans lequel une variation de puissance de charge change rapidement à un taux prédéterminé ou au-dessus d'après les informations de courbe de charge requises ; et limiter la puissance de charge fournie au dispositif incluant la batterie dans l'intervalle de temps prédit à l'avance, de façon à réduire la variation de puissance de charge au cours de l'intervalle de temps à un taux prédéterminé ou en-dessous.
PCT/KR2023/018162 2022-11-16 2023-11-13 Système de gestion de durée de vie de batterie et procédé de charge de batterie l'utilisant WO2024106875A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011166974A (ja) * 2010-02-12 2011-08-25 Honda Motor Co Ltd 車両充電電力マネジメントシステム
KR20200052935A (ko) * 2017-09-15 2020-05-15 다이슨 테크놀러지 리미티드 에너지 저장 시스템
KR20210148759A (ko) * 2020-06-01 2021-12-08 한국전력공사 배터리의 수명 향상을 위해 soc를 적용한 전기자동차의 충방전 스케쥴링 관리 시스템, 충방전 스케쥴링 서버 장치 및 충방전 스케쥴링 방법
KR102406394B1 (ko) * 2021-09-01 2022-06-08 에스케이시그넷 주식회사 빅데이터 기반의 중앙 관제 충전 시스템, 방법 및 장치
KR102453046B1 (ko) * 2021-12-30 2022-10-11 주식회사 크로커스 전기자동차 충전 스테이션 부하 예측 모델 기반의 전압 최적화 제어를 통한 보전 전압 강하를 위한 전압 제어 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011166974A (ja) * 2010-02-12 2011-08-25 Honda Motor Co Ltd 車両充電電力マネジメントシステム
KR20200052935A (ko) * 2017-09-15 2020-05-15 다이슨 테크놀러지 리미티드 에너지 저장 시스템
KR20210148759A (ko) * 2020-06-01 2021-12-08 한국전력공사 배터리의 수명 향상을 위해 soc를 적용한 전기자동차의 충방전 스케쥴링 관리 시스템, 충방전 스케쥴링 서버 장치 및 충방전 스케쥴링 방법
KR102406394B1 (ko) * 2021-09-01 2022-06-08 에스케이시그넷 주식회사 빅데이터 기반의 중앙 관제 충전 시스템, 방법 및 장치
KR102453046B1 (ko) * 2021-12-30 2022-10-11 주식회사 크로커스 전기자동차 충전 스테이션 부하 예측 모델 기반의 전압 최적화 제어를 통한 보전 전압 강하를 위한 전압 제어 장치

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