WO2024101832A1 - 급속 충전 제어 장치 및 방법 - Google Patents
급속 충전 제어 장치 및 방법 Download PDFInfo
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- WO2024101832A1 WO2024101832A1 PCT/KR2023/017701 KR2023017701W WO2024101832A1 WO 2024101832 A1 WO2024101832 A1 WO 2024101832A1 KR 2023017701 W KR2023017701 W KR 2023017701W WO 2024101832 A1 WO2024101832 A1 WO 2024101832A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/90—Regulation of charging or discharging current or voltage
- H02J7/96—Regulation of charging or discharging current or voltage in response to battery voltage
-
- 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
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- 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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- 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
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
- H02J7/82—Control of state of charge [SOC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
- H02J7/84—Control of state of health [SOH]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/90—Regulation of charging or discharging current or voltage
- H02J7/933—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- 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
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- 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
Definitions
- the present invention relates to a rapid charging control device and method, and more specifically, to a rapid charging control device and method for efficiently fast charging a battery.
- lithium batteries have almost no memory effect compared to nickel-based batteries, so they can be freely charged and discharged, and have a very high self-discharge rate. It is attracting attention due to its low and high energy density.
- lithium plating lithium plating
- Li-plating lithium plating, Li-plating
- lithium metal is deposited on the surface of the cathode, an internal short circuit of the battery may occur, so there is a risk of ignition or explosion due to an internal short circuit. Therefore, there is a need to develop a technology that can prevent lithium metal from depositing on the cathode surface and rapidly charge the battery.
- the present invention was made to solve the above problems, and its purpose is to provide a rapid charging control device and method that can efficiently rapidly charge a battery.
- a rapid charging control device includes a measuring unit configured to measure the voltage of a battery; And estimating the SOC of the battery based on the voltage of the battery, and determining the charging C-RATE corresponding to the estimated SOC based on a charging profile preset to indicate the correspondence between SOC and charging C-RATE, When the charging C-RATE corresponding to the estimated SOC changes, it may include a control unit configured to block charging of the battery for a predetermined period of time.
- the charging profile may be configured to include a plurality of SOC sections with corresponding charging C-RATE set.
- the control unit blocks charging of the battery for the predetermined time and charges the battery. It can be configured to change to the charging C-RATE corresponding to the next SOC section.
- the control unit may be configured to resume charging of the battery with the changed charging C-RATE after the predetermined time has elapsed.
- the charging C-RATE may be set to decrease as the estimated SOC increases and the SOC section to which the estimated SOC belongs changes.
- the control unit may be configured to calculate the resistance value of the battery based on the voltage change during the predetermined time and diagnose the state of the battery according to the calculated resistance value.
- the control unit calculates the resistance value whenever charging of the battery is interrupted for the predetermined time in a plurality of charging cycles, and compares resistance values with the same charging C-RATE to diagnose the state of the battery. It can be configured.
- the control unit may be configured to diagnose that lithium metal has been deposited in the battery based on resistance values calculated in successive charging cycles among resistance values with the same charging C-RATE.
- the control unit calculates a resistance change rate of the resistance value with respect to the BOL resistance value calculated in the first charging cycle of the battery, and if the difference between the resistance change rates calculated in successive charging cycles is greater than a preset threshold, the battery It can be configured to diagnose that lithium metal is precipitated.
- the control unit may be configured to diagnose that lithium metal has been deposited in the battery if the ratio of the resistance difference to the BOL resistance value calculated in the first charging cycle of the battery is greater than or equal to a preset threshold.
- the charging profile may be set to indicate a correspondence between the charging C-RATE and the SOC corresponding to the maximum point or inflection point of a resistance profile preset to correspond to the charging C-RATE.
- the resistance profile may be set to indicate a correspondence between a resistance value corresponding to the charging C-RATE and SOC.
- the charging profile may be set so that, if the maximum point exists in the resistance profile, the SOC corresponding to the maximum point corresponds to the charging C-RATE.
- the charging profile may be set so that if the maximum point does not exist in the resistance profile and the inflection point exists, the SOC corresponding to the inflection point corresponds to the charging C-RATE.
- the charging profile may be configured such that as the charging C-RATE decreases, the SOC corresponding to the charging C-RATE increases.
- a battery pack according to another aspect of the present invention may include a rapid charging control device according to an aspect of the present invention.
- a rapid charging control method includes a voltage measurement step of measuring the voltage of a battery; A SOC estimation step of estimating the SOC of the battery based on the voltage of the battery; A charging C-RATE determination step of determining a charging C-RATE corresponding to the estimated SOC, based on a charging profile preset to indicate the correspondence between SOC and charging C-RATE; And when the charging C-RATE corresponding to the estimated SOC changes, it may include a charging blocking step of blocking charging of the battery for a predetermined time.
- a rapid charging control method includes a resistance value calculation step of calculating a resistance value of the battery based on a voltage change during the predetermined time after the charging blocking step; and a battery diagnosis step of diagnosing the state of the battery according to the calculated resistance value.
- rapid charging of a battery can be controlled according to a set charging profile to prevent lithium metal from being deposited in the battery during the rapid charging process. Therefore, precipitation of lithium metal during the rapid charging process can be effectively prevented.
- FIG. 1 is a diagram schematically showing a rapid charging control device according to an embodiment of the present invention.
- Figure 2 is a diagram schematically showing a charging profile according to an embodiment of the present invention.
- Figure 3 is a diagram schematically showing a battery charging process according to an embodiment of the present invention.
- Figure 4 is a diagram schematically showing the resistance change rate of the first battery and the second battery according to an embodiment of the present invention.
- Figure 5 is a diagram schematically showing the resistance change rate of the third battery and the fourth battery according to an embodiment of the present invention.
- Figure 6 is a diagram schematically showing a first resistance profile according to an embodiment of the present invention.
- Figure 7 is a diagram schematically showing a first differential profile of a first resistance profile according to an embodiment of the present invention.
- Figure 8 is a diagram schematically showing a second resistance profile according to an embodiment of the present invention.
- Figure 9 is a diagram schematically showing a first differential profile of a second resistance profile according to an embodiment of the present invention.
- Figure 10 is a diagram schematically showing a second differential profile of a second resistance profile according to an embodiment of the present invention.
- Figure 11 is a diagram schematically showing a plurality of resistance profiles according to an embodiment of the present invention.
- FIG. 12 is a diagram schematically showing an exemplary configuration of a battery pack according to another embodiment of the present invention.
- Figure 13 is a diagram schematically showing an exemplary configuration of a vehicle according to another embodiment of the present invention.
- Figure 14 is a diagram schematically showing an exemplary configuration of an energy storage device according to another embodiment of the present invention.
- 15 and 16 are diagrams schematically showing a rapid charging control method according to another embodiment of the present invention.
- Figure 1 is a diagram schematically showing a rapid charging control device 100 according to an embodiment of the present invention.
- the battery has a negative terminal and a positive terminal and refers to an independent cell that is physically separable.
- a lithium ion battery or a lithium polymer battery may be considered a battery.
- a battery may refer to a battery module in which a plurality of cells are connected in series and/or parallel.
- the battery will be described as meaning one independent cell.
- the rapid charging control device 100 may include a measurement unit 110 and a control unit 120.
- the measuring unit 110 may be configured to measure the voltage of the battery.
- the measuring unit 110 may be connected to the positive and negative terminals of the battery. Additionally, the measuring unit 110 may be configured to measure the voltage of the battery by measuring the positive and negative voltages of the battery. For example, the measurement unit 110 may measure the voltage of the battery according to a preset voltage measurement cycle.
- the measurement unit 110 may be connected to the control unit 120 to enable communication.
- the measurement unit 110 may be connected to the control unit 120 by wire and/or wirelessly. Additionally, the measurement unit 110 may transmit information about the measured voltage of the battery to the control unit 120.
- the control unit 120 may be configured to estimate the state of charge (SOC) of the battery based on the voltage of the battery.
- control unit 120 may receive the voltage of the battery from the measurement unit 110 and estimate the SOC of the battery from the received voltage.
- the voltage and SOC of the battery can be set in advance according to their correspondence.
- a SOC profile indicating the correspondence between voltage and SOC may be prepared in advance.
- the control unit 120 may determine the SOC corresponding to the voltage received from the measurement unit 110 from the SOC profile and estimate the determined SOC as the SOC of the battery.
- SOC indicates the state of charge of the battery, and may be preset so that the voltage of the battery corresponds to the SOC.
- This SOC can be expressed as a value from 0% to 100% or 0 to 1.
- SOC is described as having a value of 0% to 100%.
- the control unit 120 may be configured to determine a charging C-RATE corresponding to the estimated SOC based on a charging profile preset to indicate the correspondence between SOC and charging C-RATE (Current rate).
- the charging profile can be set in advance to indicate the correspondence between SOC and charging C-RATE.
- the charging C-RATE is the C-RATE at which the battery is charged, and the charging C-RATE for the battery can be determined depending on the SOC of the battery.
- the charging C-RATE corresponding to a given SOC section may be set in advance. Additionally, the control unit 120 may determine the SOC section to which the current SOC of the battery belongs in the charging profile and determine the charging C-RATE corresponding to the determined SOC section.
- FIG. 2 is a diagram schematically showing a charging profile according to an embodiment of the present invention.
- the charging profile may be configured to include a plurality of SOC sections in which the corresponding charging C-RATE is set.
- the charging profile includes a first SOC section from 8% to 25% SOC, a second SOC section from 25% to 40% SOC, a third SOC section from 40% to 55% SOC, and a fourth SOC section from 55% to 70% SOC. And a fifth SOC section of 70% to 80% SOC may be included. Additionally, a rest period of 3 seconds (0.05 minutes) may be included between each SOC section.
- the SOC of the battery may be included in the first SOC section. Accordingly, the control unit 120 may determine the charging C-RATE for the battery to be 2.5C.
- the control unit 120 may be configured to block battery charging for a predetermined period of time when the charging C-RATE corresponding to the estimated SOC changes.
- control unit 120 may determine the charging C-RATE corresponding to the estimated SOC based on the charging profile. For example, the control unit 120 may estimate the SOC each time it receives the voltage of the battery from the measurement unit 110 and determine the charging C-RATE based on the estimated SOC. If the charging C-RATE corresponding to the estimated SOC changes, the control unit 120 may block charging of the battery for a predetermined time.
- the charging C-RATE can be set to decrease as the estimated SOC increases and the SOC section to which the estimated SOC belongs changes.
- the size of the corresponding charging C-RATE may decrease in the order of the first SOC section, the second SOC section, the third SOC section, the fourth SOC section, and the fifth SOC section. That is, as the SOC of the battery increases (i.e., as the battery is charged), the charging C-RATE for the battery may decrease.
- the control unit 120 blocks charging of the battery for a predetermined time and sets the charging C-RATE for the battery. It can be configured to change to the charging C-RATE corresponding to the next SOC section.
- the control unit 120 may determine the charging C-RATE of the battery at time t1 to be 2.5C. Thereafter, if the SOC of the battery is estimated to be 25% at time t2, the control unit 120 may determine that the SOC of the battery at time t2 has reached the upper limit of the first SOC section. The control unit 120 may block charging of the battery for a predetermined time at time t2 and change the charging C-RATE of the battery to 1.5C corresponding to the second SOC section.
- the predetermined time refers to a charging interruption time set to calculate charge transfer resistance based on the voltage drop immediately after charging of the battery is stopped.
- the predetermined time may be set to any one of 0.1 seconds to 3 seconds.
- control unit 120 may be configured to resume charging the battery with the changed charging C-RATE.
- the battery may be charged with the changed charging C-RATE.
- the controller 120 can control the battery to be charged at a charge C-RATE of 1.5C until the SOC of the battery reaches the upper limit (40%) of the second SOC section.
- the total charging time for the battery may take 44.55 minutes (i.e., 44 minutes 33 seconds).
- the rapid charging control device 100 can rapidly charge the battery by changing the charging C-RATE for each SOC section.
- the rapid charging control device 100 may control rapid charging of the battery so that there is a rest period for a predetermined period of time whenever the charging C-RATE changes during the rapid charging process.
- control unit 120 provided in the fast charging control device 100 includes a processor, an application-specific integrated circuit (ASIC), another chipset, a logic circuit, and a processor known in the art to execute various control logics performed in the present invention. It may optionally include registers, communication modems, data processing devices, etc. Additionally, when the control logic is implemented as software, the control unit 120 may be implemented as a set of program modules. At this time, the program module is stored in memory and can be executed by the control unit 120. The memory may be inside or outside the control unit 120 and may be connected to the control unit 120 through various well-known means.
- ASIC application-specific integrated circuit
- the rapid charging control device 100 may further include a storage unit 130.
- the storage unit 130 may store data or programs required for each component of the rapid charging control device 100 to perform operations and functions, or data generated in the process of performing operations and functions.
- information storage means may include RAM, flash memory, ROM, EEPROM, registers, etc.
- the storage unit 130 may store program codes in which processes executable by the control unit 120 are defined.
- the control unit 120 may be configured to calculate the resistance value of the battery based on the voltage change over a predetermined period of time.
- control unit 120 may calculate the resistance value of the battery based on the change in voltage of the battery during the time when charging of the battery is blocked.
- control unit 120 may be configured to calculate a resistance value whenever charging of the battery is interrupted for a predetermined period of time in a plurality of charging cycles.
- the control unit 120 uses Ohm'law of the battery to adjust the charging current and voltage immediately before charging of the battery is cut off and the voltage at the time a predetermined time elapses after charging of the battery is cut off. Based on this, the resistance value of the battery can be calculated.
- FIG. 3 is a diagram schematically showing a battery charging process according to an embodiment of the present invention.
- the battery voltage at Ts may be Vs[V]
- the battery voltage at Td may be Vd[V]. That is, during the rest period (Rest) when charging of the battery is blocked, the voltage of the battery may decrease from Vs[V] to Vd[V].
- the control unit 120 may calculate the resistance value of the battery by calculating the formula “(Vs-Vd) ⁇ I1”.
- control unit 120 may be configured to diagnose the state of the battery according to the calculated resistance value.
- control unit 120 may be configured to diagnose the state of the battery by comparing resistance values with the same charging C-RATE.
- the battery may have a total of 5 rest periods in the process of being charged from SOC 8% to 80%. Since the SOC of the battery corresponding to each rest period is different, the state of the battery can be diagnosed by comparing resistance values with the same charging C-RATE.
- control unit 120 can diagnose the state of the battery (in particular, whether lithium is deposited) based on the resting resistance value during the rapid charging process. That is, the control unit 120 can diagnose the status of the battery in real time while the battery is being rapidly charged.
- control unit 120 may be configured to diagnose that lithium metal has been deposited in the battery based on resistance values calculated in successive charging cycles among resistance values with the same charging C-RATE.
- control unit 120 may diagnose the state of the battery based on the difference in resistance change rate or resistance difference with respect to the resistance value of successive charging cycles.
- the difference in resistance change rate may mean the ratio of the calculated resistance value of the battery to the BOL (Beginning of Life) resistance value calculated in the first charging cycle of the battery.
- the resistance change rate can be expressed according to the formula "(R0-Rn) ⁇ Rn ⁇ 100" or "(R0-Rn) ⁇ Rn". there is.
- the resistance change rate of the battery's resistance value (R1) calculated at time t1 is "(R1-R0) ⁇ Rn
- the resistance change rate is “(R2-R0) ⁇ Rn ⁇ 100”, and the difference in resistance change rate can be calculated as “(R1-R2) ⁇ Rn ⁇ 100”.
- the resistance difference may mean the difference between resistance values in successive charging cycles. For example, if the battery resistance value calculated at time t1 is R1, and the battery resistance value calculated at time t2 (a continuous time point t1) is R2, the resistance difference can be calculated as “R1-R2”.
- control unit 120 may be configured to calculate a resistance change rate of the resistance value with respect to the BOL resistance value calculated in the first charging cycle of the battery. In addition, the control unit 120 may be configured to diagnose that lithium metal has been deposited in the battery if the difference in resistance change rate calculated in successive charging cycles is greater than or equal to a preset threshold.
- control unit 120 may diagnose the state of the battery as an abnormal state in which lithium metal is deposited.
- Figure 4 is a diagram schematically showing the resistance change rate of the first battery (B1) and the second battery (B2) according to an embodiment of the present invention.
- the first battery (B1) is a normal battery in which lithium metal has not been deposited
- the second battery (B2) is a defective battery in which lithium metal has been deposited starting from the 21st charging cycle.
- the first battery (B1) and the second battery (B2) are the same type of battery, but in order to determine the change in resistance change rate when lithium metal is deposited, the negative electrode of the second battery (B2) is changed from the 21st charging cycle. Lithium metal was allowed to precipitate.
- FIG. 4 shows the 1-second resistance change rate of the first battery (B1) and the second battery (B2). That is, the time during which charging of the first battery (B1) and the second battery (B2) is blocked is set to 1 second, and the charging of the first battery (B1) and the second battery (B2) is set to 1 second based on the voltage change for 1 second. The resistance value is calculated, and the resistance change rate is calculated based on the calculated resistance value.
- the resistance change rate of the second battery B2 in the 20th charging cycle may be RF1%, and the resistance change rate in the 21st charging cycle may be RF2%.
- the control unit 120 may calculate the difference in resistance change rate between the 20th charging cycle and the 21st charging cycle as “RF1-RF2.” Additionally, the control unit 120 may compare the difference in the calculated resistance change rates with a preset threshold.
- the threshold may be set to a value that can indicate that the resistance change rate of successive charging cycles has changed rapidly.
- the threshold value may be preset to a value of 0.5% or more, for example, based on the type of battery, where the battery is used, etc.
- the threshold can be preset to a value of 1% or higher. In the following, it is assumed that the threshold is set to 1%.
- the difference in resistance change rates of the first battery B1 corresponding to successive charging cycles is not greater than the threshold value (1%). Accordingly, the control unit 120 may diagnose the first battery B1 as a normal battery in which lithium metal is not deposited. On the other hand, since the difference in resistance change rate (RF1-RF2) of the second battery (B2) between the 20th and 21st charging cycles is greater than the threshold (1%), the control unit 120 connects the second battery (B2) to lithium. It can be diagnosed as an abnormal battery with metal deposits.
- FIG. 5 is a diagram schematically showing the resistance change rate of the third battery (B3) and the fourth battery (B4) according to an embodiment of the present invention.
- the third battery (B3) is a normal battery in which lithium metal has not been deposited
- the fourth battery (B4) is a defective battery in which lithium metal has been deposited starting from the 21st charging cycle.
- the third battery (B3) and the fourth battery (B4) are the same type of battery, but in order to determine the change in resistance change rate when lithium metal is deposited, the negative electrode of the fourth battery (B4) is changed from the 21st charging cycle. Lithium metal was allowed to precipitate.
- FIG. 5 shows the 3-second resistance change rate of the third battery (B3) and the fourth battery (B4). That is, the time for blocking the charging of the third battery (B3) and the fourth battery (B4) is set to 3 seconds, and the charging of the third battery (B3) and the fourth battery (B4) is set to 3 seconds based on the voltage change for 3 seconds. The resistance value is calculated, and the resistance change rate is calculated based on the calculated resistance value.
- the difference in resistance change rates of the third battery B3 corresponding to successive charging cycles is not greater than the threshold value (1%). Accordingly, the control unit 120 may diagnose the third battery B3 as a normal battery in which lithium metal is not deposited. On the other hand, since the difference in resistance change rate (RF3-RF4) of the fourth battery (B4) between the 20th and 21st charging cycles is greater than the threshold (1%), the control unit 120 controls the fourth battery (B4) as lithium. It can be diagnosed as an abnormal battery with metal deposits.
- control unit 120 may be configured to diagnose that lithium metal has been deposited in the battery if the ratio of the resistance difference to the BOL resistance value calculated in the first charging cycle of the battery is greater than or equal to a preset threshold. .
- the control unit 120 may calculate the resistance difference between time t2 and time t1 as “R1-R2.” And, the control unit 120 can calculate the ratio of the resistance difference to the BOL resistance value according to the formula “(R1-R2) ⁇ R0 ⁇ 100”. And, the control unit 120 determines whether the calculated value is critical? If this is the case, it can be diagnosed that lithium metal has been deposited in the battery.
- the rapid charging control device 100 has the advantage of being able to diagnose the state of the battery in real time during the rapid charging process based on the resistance value of the corresponding charging C-RATE.
- the state of the battery can be diagnosed by not simply considering the difference in resistance between two consecutive charging cycles, but also considering the BOL resistance of the battery. Therefore, there is an advantage that the state of the battery can be accurately diagnosed in real time based on the initial resistance (BOL resistance) of the battery, the resistance value of the previous charging cycle, and the resistance value of the current charging cycle.
- the charging profile may be set to indicate a correspondence between the charging C-RATE and the SOC corresponding to the maximum point or inflection point of the resistance profile preset to correspond to the charging C-RATE.
- the resistance profile may be set to indicate the correspondence between the resistance value corresponding to the charging C-RATE and the SOC.
- the correspondence between the battery's resistance value and SOC may vary depending on the charging C-RATE. Therefore, preferably, the resistance profile can be provided for each charging C-RATE.
- the resistance profile can be expressed as an X-Y graph where the X-axis is SOC and the Y-axis is set to resistance value.
- a correspondence relationship between charging C-RATE and SOC can be established depending on the presence or absence of a maximum point or inflection point of the resistance profile.
- the local maximum point refers to a point corresponding to a differentiable local maximum in the resistance profile.
- the maximum point is a point where the instantaneous rate of change in resistance to SOC is 0, and the instantaneous rate of change in resistance to SOC can change from positive to negative around the maximum point.
- the charging profile may be set so that, if a maximum point exists in the resistance profile, the SOC corresponding to the maximum point corresponds to the charging C-RATE.
- Figure 6 is a diagram schematically showing the first resistance profile PR1 according to an embodiment of the present invention.
- FIG. 7 is a diagram schematically showing the first differential profile PF1' of the first resistance profile PR1 according to an embodiment of the present invention.
- the first resistance profile PR1 is a profile showing the correspondence between SOC and resistance obtained while charging the battery at a charging C-RATE of 0.75C.
- the first differential profile PF1' of the first resistance profile PR1 is a profile obtained by first differentiating the first fitting profile PF1 obtained by polynomial curve fitting of the first resistance profile PR1.
- the first differential profile PF1' according to the embodiment of FIG. 7 may be derived.
- the SOC of the maximum point of the first resistance profile PR1 is tSOC1 (75.09764%).
- the upper limit of the SOC section corresponding to a charging C-RATE of 0.75C may be set to 75% (75.09764% rounded to the decimal place).
- the charging profile may be set so that if an inflection point exists without a maximum point in the resistance profile, the SOC corresponding to the inflection point corresponds to the charging C-RATE.
- the overvoltage within the battery increases, and the resistance profile may change differently accordingly.
- FIG. 8 is a diagram schematically showing a second resistance profile PR2 according to an embodiment of the present invention.
- FIG. 9 is a diagram schematically showing the first differential profile PF2′ of the second resistance profile PR2 according to an embodiment of the present invention.
- FIG. 10 is a diagram schematically showing a second differential profile (PF2") of the second resistance profile (PR2) according to an embodiment of the present invention.
- the second resistance profile PR2 is a profile showing the correspondence between SOC and resistance obtained while charging the battery at a charging C-RATE of 2C.
- the first differential profile (PF2') of the second resistance profile (PR2) is a profile obtained by first differentiating the second fitting profile (PF2) obtained by polynomial curve fitting of the second resistance profile (PR2).
- the second differential profile (PF2") of the second resistance profile (PR2) is a profile obtained by second-differentiating the second fitting profile (PF2). That is, the second differential profile (PF2) of the second resistance profile (PR2) ") is a profile obtained by differentiating the first differential profile (PF2') of the second resistance profile (PR2).
- the first differential profile PF2' according to the embodiment of FIG. 9 can be derived.
- the second differential profile PF2" according to the embodiment of FIG. 10 can be derived.
- the charging C-RATE included in the charging profile is 2C, 0.75C, and 0.5C
- the battery is charged at SOC 8% to 80%.
- the upper limit of the SOC section corresponding to a charging C-RATE of 2C is SOC 36%
- the upper limit of the SOC section corresponding to a charging C-RATE of 0.75C is SOC 75%, corresponding to a charging C-RATE of 0.5C. It is assumed that the upper limit of the SOC section is SOC 80%.
- the battery is charged at a charge C-RATE of 2C from 8% to 36% SOC, a charge C-RATE of 0.75C from 36% to 75% SOC, and a charge C-RATE of 0.5C from 75% to 80% SOC.
- a charging profile can be set to charge at a RATE.
- the rapid charging control device 100 can control rapid charging of a battery using a charging profile set to prevent lithium metal from being deposited in the battery during the rapid charging process. Therefore, precipitation of lithium metal due to rapid charging can be effectively prevented.
- the charging profile may be configured so that as the charging C-RATE decreases, the SOC corresponding to the charging C-RATE increases.
- Figure 11 is a diagram schematically showing a plurality of resistance profiles according to an embodiment of the present invention.
- the embodiment of Figure 11 has a resistance profile corresponding to the charging C-RATE of 0.5C, 0.75C, 1C, 1.25C, 1.5C, 1.75C, 2C, 2.25C, 2.5C, 2.75C and 3C, and This is a diagram showing the upper limit of the SOC section (marked with ⁇ ).
- the upper limit of the SOC section corresponding to the charging C-RATE may decrease. Conversely, as the charging C-RATE decreases, the upper limit of the SOC section corresponding to the charging C-RATE may increase.
- the resistance profile and the upper limit of the SOC section for charging C-RATE from 0.5C to 3C are shown in 0.25C units, but the upper limit of the SOC section for more diverse charging C-RATE is shown in the charging profile. Can be preset.
- the rapid charging control device 100 according to the present invention can be applied to a BMS (Battery Management System). That is, the BMS according to the present invention may include the rapid charging control device 100 described above. In this configuration, at least some of each component of the rapid charging control device 100 may be implemented by supplementing or adding functions of components included in a conventional BMS. For example, the measurement unit 110, control unit 120, and storage unit 130 of the rapid charging control device 100 may be implemented as components of a BMS.
- the rapid charging control device 100 may be provided in a battery pack. That is, the battery pack according to the present invention may include the rapid charging control device 100 described above and one or more battery cells. Additionally, the battery pack may further include electrical components (relays, fuses, etc.) and cases.
- FIG. 12 is a diagram schematically showing an exemplary configuration of a battery pack 10 according to another embodiment of the present invention.
- the positive terminal of the battery 11 may be connected to the positive terminal (P+) of the battery pack 10, and the negative terminal of the battery 11 may be connected to the negative terminal (P-) of the battery pack 10.
- the relay 12 may be located in the charging/discharging path of the battery 11. Specifically, the relay 12 may be located in a high current path of the battery 11. For example, one end of the relay 12 may be electrically connected to the positive terminal of the battery 11, and the other end of the relay 12 may be electrically connected to the positive terminal (P+) of the battery pack 10. Also, the charging/discharging path of the battery 11 may be opened or closed depending on the operating state of the relay 12.
- the control unit 120 may control the operation state of the relay 12 to be turned on or turned off. For example, the control unit 120 may control the operating state of the relay 12 to be turned on while charging the battery 11. Additionally, the control unit 120 may control the operating state of the relay 12 to be turned off while blocking charging of the battery 11.
- the measuring unit 110 (110) may be connected to the first sensing line (SL1), the second sensing line (SL2), and the third sensing line (SL3). Specifically, the measuring unit 110 (110) is connected to the positive terminal of the battery 11 through the first sensing line (SL1) and to the negative terminal of the battery 11 through the second sensing line (SL2). You can. The measurement unit 110 may measure the voltage of the battery 11 based on the voltage measured at each of the first and second sensing lines (SL1) and SL2.
- the measurement unit 110 (110) may be connected to the current measurement unit (A) through the third sensing line (SL3).
- the current measuring unit A may be an ammeter or a shunt resistor capable of measuring the charging current and discharging current of the battery 11.
- One end of the charging device 20 may be connected to the positive terminal (P+) of the battery pack 10, and the other end may be connected to the negative terminal (P-) of the battery pack 10. Therefore, the positive terminal of the battery 11, the positive terminal (P+) of the battery pack 10, the charging device 20, the negative terminal (P-) of the battery pack 10, and the negative terminal of the battery 11 are electrically connected. It can be connected to .
- the charging device 20 may be connected to enable communication with the control unit 120.
- the charging device 20 and the control unit 120 may be connected to communicate using power line communication (PLC).
- PLC power line communication
- the control unit 120 transmits the determined charging C-RATE to the charging device 20, and the charging device 20 can output a charging current corresponding to the received charging C-RATE to the battery 11.
- FIG. 13 is a diagram schematically showing an exemplary configuration of a car 1300 according to another embodiment of the present invention.
- the battery pack 1310 may be included in a vehicle 1300 such as an electric vehicle (EV) or a hybrid vehicle (HV). And, the battery pack 1310 can drive the car 1300 by supplying power to the motor through an inverter provided in the car 1300. In addition, the battery pack 1310 is equipped with a rapid charging control device 100 (100), which can control rapid charging of the battery pack 1310.
- a vehicle 1300 such as an electric vehicle (EV) or a hybrid vehicle (HV).
- EV electric vehicle
- HV hybrid vehicle
- the battery pack 1310 can drive the car 1300 by supplying power to the motor through an inverter provided in the car 1300.
- the battery pack 1310 is equipped with a rapid charging control device 100 (100), which can control rapid charging of the battery pack 1310.
- FIG. 14 is a diagram schematically showing an exemplary configuration of an energy storage system (ESS) 1400 according to another embodiment of the present invention.
- the energy storage device 1400 includes a plurality of battery modules 1420 and a rack case 1410.
- the plurality of battery modules 1420 may be configured to be accommodated in the rack case 1410 in a vertically arranged form.
- a fast charging control device 100 is provided in each of the plurality of battery modules 1420, and the fast charging control device 100 can control fast charging of the corresponding battery module 1420.
- 15 and 16 are diagrams schematically showing a rapid charging control method according to another embodiment of the present invention.
- each step of the rapid charging control method may be performed by the rapid charging control device 100.
- the rapid charging control device 100 For convenience of explanation, content that overlaps with the content described above will be omitted or briefly described.
- the fast charging control method may include a voltage measurement step (S100), an SOC estimation step (S200), a charging C-RATE determination step (S300), and a charging blocking step (S400).
- the voltage measurement step (S100) is a step of measuring the voltage of the battery and may be performed by the measurement unit 110.
- the measurement unit 110 may measure the voltage of the battery according to a preset voltage measurement cycle.
- the SOC estimation step (S200) is a step of estimating the SOC of the battery based on the voltage of the battery, and may be performed by the control unit 120.
- control unit 120 may estimate the SOC for the voltage measured in the voltage measurement step (S100) based on the SOC profile indicating the correspondence between voltage and SOC.
- the charging C-RATE determination step (S300) is a step of determining the charging C-RATE corresponding to the estimated SOC based on a charging profile preset to indicate the correspondence between SOC and charging C-RATE, and the control unit 120 It can be performed by .
- control unit 120 may determine the SOC section to which the current SOC of the battery belongs in the charging profile and determine the charging C-RATE corresponding to the determined SOC section.
- the charging blocking step (S400) is a step of blocking charging of the battery for a predetermined time when the charging C-RATE corresponding to the estimated SOC changes, and may be performed by the control unit 120.
- the control unit 120 may block charging of the battery for a predetermined time. That is, when the estimated SOC reaches the upper limit of the SOC section to which it currently belongs, the control unit 120 may block battery charging for a predetermined period of time.
- the rapid charging control method can control the rapid charging of the battery so that there is a rest period for a predetermined period of time whenever the charging C-RATE changes during the rapid charging process.
- the fast charging control method may further include a resistance value calculation step (S500) and a battery diagnosis step (S600).
- the resistance value calculation step (S500) is a step of calculating the resistance value of the battery based on the voltage change for a predetermined time after the charging cutoff step (S400), and may be performed by the control unit 120.
- control unit 120 may use Ohm's law to calculate the resistance value of the battery based on the change in voltage of the battery during the time when charging of the battery is blocked.
- control unit 120 may calculate the resistance value of the battery by calculating the formula “(Vs-Vd) ⁇ I1”.
- the battery diagnosis step (S600) is a step of diagnosing the state of the battery according to the calculated resistance value, and may be performed by the control unit 120.
- control unit 120 may be configured to calculate a resistance change rate of the resistance value with respect to the BOL resistance value calculated in the first charging cycle of the battery. In addition, the control unit 120 may be configured to diagnose that lithium metal has been deposited in the battery if the difference in resistance change rate calculated in successive charging cycles is greater than or equal to a preset threshold.
- control unit 120 may be configured to diagnose that lithium metal has been deposited in the battery if the ratio of the resistance difference to the BOL resistance value calculated in the first charging cycle of the battery is greater than or equal to a preset threshold. .
- the rapid charging control method has the advantage of being able to diagnose the state of the battery in real time during the rapid charging process based on the resistance value of the corresponding charging C-RATE.
- the embodiments of the present invention described above are not only implemented through devices and methods, but may also be implemented through a program that realizes the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.
- the implementation can be easily implemented by an expert in the technical field to which the present invention belongs based on the description of the embodiments described above.
- control unit 120 control unit
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Abstract
Description
Claims (15)
- 배터리의 전압을 측정하도록 구성된 측정부; 및상기 배터리의 전압에 기반하여 상기 배터리의 SOC를 추정하고, SOC와 충전 C-RATE 간의 대응 관계를 나타내도록 미리 설정된 충전 프로파일에 기반하여, 추정된 SOC에 대응되는 충전 C-RATE를 결정하며, 상기 추정된 SOC에 대응되는 충전 C-RATE가 변경될 경우, 소정의 시간 동안 상기 배터리의 충전을 차단시키도록 구성된 제어부를 포함하는 것을 특징으로 하는 급속 충전 제어 장치.
- 제1항에 있어서,상기 충전 프로파일은,대응되는 충전 C-RATE가 설정된 복수의 SOC 구간을 포함하도록 구성되고,상기 제어부는,상기 추정된 SOC가 증가함에 따라 상기 추정된 SOC가 속하고 있는 현재 SOC 구간의 상한값에 도달하면, 상기 배터리의 충전을 상기 소정의 시간 동안 차단하고, 상기 배터리에 대한 충전 C-RATE를 다음 SOC 구간에 대응되는 충전 C-RATE로 변경하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제2항에 있어서,상기 제어부는,상기 소정의 시간이 경과된 이후, 변경된 충전 C-RATE로 상기 배터리의 충전을 재개하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제2항에 있어서,상기 충전 C-RATE는,상기 추정된 SOC가 증가함에 따라 상기 추정된 SOC가 속하는 SOC 구간이 변경될수록 작아지도록 설정된 것을 특징으로 하는 급속 충전 제어 장치.
- 제1항에 있어서,상기 제어부는,상기 소정의 시간 동안의 전압 변화에 기반하여 상기 배터리의 저항값을 산출하며, 산출된 저항값에 따라 상기 배터리의 상태를 진단하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제5항에 있어서,상기 제어부는,복수의 충전 사이클에서 상기 배터리의 충전이 상기 소정의 시간 동안 차단될 때마다 상기 저항값을 산출하고, 대응되는 충전 C-RATE가 동일한 저항값끼리 비교하여 상기 배터리의 상태를 진단하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제6항에 있어서,상기 제어부는,상기 대응되는 충전 C-RATE가 동일한 저항값 중에서 연속된 충전 사이클에서 산출된 저항값들에 기반하여 상기 배터리에 리튬 금속이 석출된 것으로 진단하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제7항에 있어서,상기 제어부는,상기 배터리의 최초 충전 사이클에서 산출된 BOL 저항값에 대한 상기 저항값의 저항 변동률을 산출하고, 상기 연속된 충전 사이클에서 산출된 저항 변동률의 차이가 미리 설정된 임계값 이상이면, 상기 배터리에 리튬 금속이 석출된 것으로 진단하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제7항에 있어서,상기 제어부는,상기 배터리의 최초 충전 사이클에서 산출된 BOL 저항값에 대한 저항차의 비율이 미리 설정된 임계값 이상이면, 상기 배터리에 리튬 금속이 석출된 것으로 진단하도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제1항에 있어서,상기 충전 프로파일은,상기 충전 C-RATE와 상기 충전 C-RATE에 대응되도록 미리 설정된 저항 프로파일의 극대점 또는 변곡점에 대응되는 SOC 간의 대응 관계를 나타내도록 설정되고,상기 저항 프로파일은,상기 충전 C-RATE에 대응되는 저항값과 SOC 간의 대응 관계를 나타내도록 설정된 것을 특징으로 하는 급속 충전 제어 장치.
- 제10항에 있어서,상기 충전 프로파일은,상기 저항 프로파일에 상기 극대점이 존재하면, 상기 극대점에 대응되는 SOC가 상기 충전 C-RATE에 대응되도록 설정되고,상기 저항 프로파일에 상기 극대점이 존재하지 않고 상기 변곡점이 존재하면, 상기 변곡점에 대응되는 SOC가 상기 충전 C-RATE에 대응되도록 설정된 것을 특징으로 하는 급속 충전 제어 장치.
- 제11항에 있어서,상기 충전 프로파일은,상기 충전 C-RATE가 감소될수록 상기 충전 C-RATE에 대응되는 SOC가 증가되도록 구성된 것을 특징으로 하는 급속 충전 제어 장치.
- 제1항 내지 제12항 중 어느 한 항에 따른 급속 충전 제어 장치를 포함하는 배터리 팩.
- 배터리의 전압을 측정하는 전압 측정 단계;상기 배터리의 전압에 기반하여 상기 배터리의 SOC를 추정하는 SOC 추정 단계;SOC와 충전 C-RATE 간의 대응 관계를 나타내도록 미리 설정된 충전 프로파일에 기반하여, 추정된 SOC에 대응되는 충전 C-RATE를 결정하는 충전 C-RATE 결정 단계; 및상기 추정된 SOC에 대응되는 충전 C-RATE가 변경될 경우, 소정의 시간 동안 상기 배터리의 충전을 차단시키는 충전 차단 단계를 포함하는 것을 특징으로 하는 급속 충전 제어 방법.
- 제14항에 있어서,상기 충전 차단 단계 이후, 상기 소정의 시간 동안의 전압 변화에 기반하여 상기 배터리의 저항값을 산출하는 저항값 산출 단계; 및산출된 저항값에 따라 상기 배터리의 상태를 진단하는 배터리 진단 단계를 더 포함하는 것을 특징으로 하는 급속 충전 제어 방법.
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| CN202380021073.6A CN118613986A (zh) | 2022-11-08 | 2023-11-06 | 快速充电控制装置和方法 |
| CA3246302A CA3246302A1 (en) | 2022-11-08 | 2023-11-06 | DEVICE AND METHOD FOR CONTROLLING FAST CHARGING |
| EP23889092.5A EP4472015A4 (en) | 2022-11-08 | 2023-11-06 | FAST CHARGING CONTROL APPARATUS AND METHOD |
| JP2025513096A JP2025529230A (ja) | 2022-11-08 | 2023-11-06 | 急速充電制御装置及び方法 |
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| KR1020220148250A KR102767066B1 (ko) | 2022-11-08 | 2022-11-08 | 급속 충전 제어 장치 및 방법 |
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| CN118386926A (zh) * | 2024-05-28 | 2024-07-26 | 深蓝汽车科技有限公司 | 动力电池充电方法、装置、设备、存储介质及车辆 |
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| US12463446B2 (en) | 2023-05-22 | 2025-11-04 | Lg Energy Solution, Ltd. | Charging control apparatus and charging control method |
| KR102875638B1 (ko) * | 2024-05-28 | 2025-10-22 | 주식회사 엘지에너지솔루션 | 충전 프로토콜 생성 장치 및 방법 |
| KR20250171766A (ko) * | 2024-05-30 | 2025-12-09 | 주식회사 엘지에너지솔루션 | 충전 프로토콜 생성 장치 및 방법 |
| KR20250171767A (ko) * | 2024-05-30 | 2025-12-09 | 주식회사 엘지에너지솔루션 | 배터리 진단 장치 및 방법 |
| KR102951708B1 (ko) * | 2024-06-04 | 2026-04-10 | 주식회사 엘지에너지솔루션 | 급속 충전 맵을 생성하기 위한 방법 및 장치 |
| KR20250173856A (ko) * | 2024-06-04 | 2025-12-11 | 주식회사 엘지에너지솔루션 | 급속 충전 맵을 생성하기 위한 방법 및 장치 |
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| US20110298417A1 (en) * | 2010-06-08 | 2011-12-08 | Tesla Motors, Inc. | Methodology for charging batteries safely |
| US20110316548A1 (en) * | 2010-06-24 | 2011-12-29 | Dania Ghantous | Method and Circuitry to Calculate the State of Charge of a Battery/Cell |
| KR20180091541A (ko) * | 2017-02-07 | 2018-08-16 | 삼성전자주식회사 | 배터리 충전 방법 및 장치 |
| KR20220059383A (ko) * | 2020-11-02 | 2022-05-10 | 에스케이온 주식회사 | 이차 전지의 급속 충전 방법 |
| KR20220148250A (ko) | 2020-04-07 | 2022-11-04 | 베이징 나우라 마이크로일렉트로닉스 이큅먼트 씨오., 엘티디. | 반도체 디바이스 중의 자성 구조 및 반도체 디바이스 |
| KR20220148040A (ko) * | 2021-04-28 | 2022-11-04 | 주식회사 엘지에너지솔루션 | 리튬 석출 검출 장치 및 방법 |
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| KR101897859B1 (ko) * | 2015-08-24 | 2018-09-12 | 주식회사 엘지화학 | 리튬 석출 탐지 방법, 이를 이용한 이차전지 충전 방법과 장치 및 이차전지 시스템 |
| KR102813037B1 (ko) * | 2017-01-23 | 2025-05-27 | 삼성에스디아이 주식회사 | 배터리 충전 방법 및 충전 시스템 |
| KR102887324B1 (ko) * | 2020-11-25 | 2025-11-14 | 주식회사 엘지에너지솔루션 | 배터리 관리 장치 및 방법 |
| KR20220139755A (ko) * | 2021-04-08 | 2022-10-17 | 주식회사 엘지에너지솔루션 | 배터리 진단 장치 및 방법 |
-
2022
- 2022-11-08 KR KR1020220148250A patent/KR102767066B1/ko active Active
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2023
- 2023-11-06 US US18/876,985 patent/US20250379465A1/en active Pending
- 2023-11-06 CA CA3246302A patent/CA3246302A1/en active Pending
- 2023-11-06 JP JP2025513096A patent/JP2025529230A/ja active Pending
- 2023-11-06 EP EP23889092.5A patent/EP4472015A4/en active Pending
- 2023-11-06 CN CN202380021073.6A patent/CN118613986A/zh active Pending
- 2023-11-06 WO PCT/KR2023/017701 patent/WO2024101832A1/ko not_active Ceased
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|---|---|---|---|---|
| US20110298417A1 (en) * | 2010-06-08 | 2011-12-08 | Tesla Motors, Inc. | Methodology for charging batteries safely |
| US20110316548A1 (en) * | 2010-06-24 | 2011-12-29 | Dania Ghantous | Method and Circuitry to Calculate the State of Charge of a Battery/Cell |
| KR20180091541A (ko) * | 2017-02-07 | 2018-08-16 | 삼성전자주식회사 | 배터리 충전 방법 및 장치 |
| KR20220148250A (ko) | 2020-04-07 | 2022-11-04 | 베이징 나우라 마이크로일렉트로닉스 이큅먼트 씨오., 엘티디. | 반도체 디바이스 중의 자성 구조 및 반도체 디바이스 |
| KR20220059383A (ko) * | 2020-11-02 | 2022-05-10 | 에스케이온 주식회사 | 이차 전지의 급속 충전 방법 |
| KR20220148040A (ko) * | 2021-04-28 | 2022-11-04 | 주식회사 엘지에너지솔루션 | 리튬 석출 검출 장치 및 방법 |
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| See also references of EP4472015A4 |
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| CN118386926A (zh) * | 2024-05-28 | 2024-07-26 | 深蓝汽车科技有限公司 | 动力电池充电方法、装置、设备、存储介质及车辆 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250379465A1 (en) | 2025-12-11 |
| KR102767066B1 (ko) | 2025-02-11 |
| KR20240066905A (ko) | 2024-05-16 |
| EP4472015A1 (en) | 2024-12-04 |
| JP2025529230A (ja) | 2025-09-04 |
| CA3246302A1 (en) | 2025-06-13 |
| EP4472015A4 (en) | 2025-07-02 |
| CN118613986A (zh) | 2024-09-06 |
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