WO2025018532A1 - Système d'évaluation de performance de batterie et procédé associé - Google Patents

Système d'évaluation de performance de batterie et procédé associé Download PDF

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Publication number
WO2025018532A1
WO2025018532A1 PCT/KR2024/006217 KR2024006217W WO2025018532A1 WO 2025018532 A1 WO2025018532 A1 WO 2025018532A1 KR 2024006217 W KR2024006217 W KR 2024006217W WO 2025018532 A1 WO2025018532 A1 WO 2025018532A1
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battery
performance evaluation
cell
performance
module
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Korean (ko)
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조영주
김태훈
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Ev Link Co ltd
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Ev Link Co ltd
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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

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  • the present invention relates to a battery performance evaluation system (1) and a method (S1) thereof, and more specifically, to a battery performance evaluation system (1) and a method (S1) thereof that enables intuitive judgment of current battery information by displaying a final performance score calculated according to a set standard (or algorithm) using data acquired from a BMS (Battery Management System) (hereinafter referred to as “BMS data”) on a display unit of a user terminal (50).
  • BMS Battery Management System
  • Secondary batteries which are easy to apply according to the product group and have electrical characteristics such as high energy density, are being widely used not only in portable devices but also in electric vehicles (EVs) or hybrid electric vehicles (HEVs) that are driven by an electric drive source. These secondary batteries are currently attracting attention as a new energy source for improving the environment and energy efficiency because they have the primary advantage of being able to reduce the use of fossil fuels and do not generate any by-products from energy use.
  • EVs electric vehicles
  • HEVs hybrid electric vehicles
  • battery packs containing multiple unit battery modules have been increasing recently.
  • battery packs contain multiple battery modules that are electrically connected and are used in electric vehicles (EVs) or hybrid electric vehicles (HEVs) that require relatively large electric capacities.
  • EVs electric vehicles
  • HEVs hybrid electric vehicles
  • the amount of waste batteries after scrapping is increasing exponentially.
  • waste batteries with good performance are reused in ESS, etc. or are used as raw materials for after-sales service. Waste batteries with poor performance are completely discharged, shredded to extract rare metals, and recycled.
  • the inventor of the present invention proposes a battery performance evaluation system and method that enables rapid and accurate evaluation of the current state of a battery by simply operating an app through a user terminal, while also allowing intuitive recognition of the overall results. The details will be described later.
  • the purpose of the present invention is to provide a battery performance evaluation system and method that enable intuitive judgment of current battery information by displaying a battery final performance score calculated according to a set algorithm using BMS data on a display unit of a user terminal.
  • the present invention aims to provide a battery performance evaluation system and method that enable accurate performance evaluation through compensation for battery packs under different conditions by deriving an SOH compensation value by compensating the SOH value among BMS data according to the battery pack temperature.
  • the present invention aims to provide a battery performance evaluation system and method that enable more precise performance evaluation by calculating aging based on battery cell voltage when evaluating current battery pack performance and deriving a final performance score together with an SOH correction value.
  • the present invention aims to provide a battery performance evaluation system and method that enable a user to easily identify a current defective cell by displaying defective battery cells, the number of corresponding cells, and corresponding cell voltages on a display unit of a user terminal.
  • the present invention aims to provide a battery performance evaluation system and method that consider the cumulative number of times a battery is charged when deriving a final performance score of a battery, thereby also considering performance deterioration due to charging of the battery.
  • the present invention aims to provide a battery performance evaluation system and method that enable users to easily obtain information on battery performance through a portable terminal such as a smartphone by installing and operating a related app on the user terminal so that it can be utilized.
  • a battery performance evaluation system is characterized by including: a battery pack including a BMS; a CDS for communicating with the BMS of the battery pack to acquire BMS data; a user terminal for accessing a server to acquire battery status information through the BMS data acquired from the CDS; and a server for generating battery-related information and/or battery status information through the BMS data acquired through the CDS or the user terminal.
  • the server in the battery performance evaluation system is characterized by including a data calculation unit that generates battery-related information through the BMS data; and a performance evaluation unit that derives the final performance of the current battery based on the battery-related information generated through the data calculation unit.
  • the data calculation unit in the battery performance evaluation system according to the present invention is characterized by including an SOH correction module that calculates an SOH correction value by correcting an SOH value among BMS data by taking into consideration the battery pack temperature.
  • the data calculation unit in the battery performance evaluation system is characterized by including an aging calculation module that calculates the aging of the battery by comparing the voltage of a new battery cell corresponding to a battery cell to be evaluated with the voltage of a current battery cell among BMS data.
  • the data calculation unit in the battery performance evaluation system according to the present invention is characterized by further including a voltage drop value calculation module that calculates a voltage drop value by comparing the voltage of the new battery cell and the voltage of the current battery cell.
  • the data operation unit in the battery performance evaluation system includes a defective cell specification module that specifies a defective battery cell among a plurality of current battery cells in the battery pack; and the defective cell specification module is characterized in that it specifies a defective cell when an individual battery cell voltage exceeds a preset value from the current battery cell average voltage.
  • the data calculation unit in the battery performance evaluation system includes an accumulated charge count calculation module that charges the accumulated charge count of a current battery; and the accumulated charge count calculation module is characterized in that it calculates the accumulated charge count based on the accumulated charge power amount among BMS data and the capacity of the battery pack.
  • the data calculation unit in the battery performance evaluation system includes an SOH correction module that calculates an SOH correction value by correcting an SOH value among BMS data by considering a battery pack temperature; an aging calculation module that calculates the aging of the battery by comparing a new battery cell voltage corresponding to a battery cell to be evaluated with a voltage of a current battery cell among BMS data; a voltage drop value calculation module that calculates a voltage drop value by comparing the voltage of the new battery cell with the voltage of the current battery cell; a defective cell specification module that identifies a defective battery cell through a cell voltage deviation value among a plurality of current battery cells in the battery pack; and an accumulated charge count calculation module that charges the accumulated charge count of the current battery; wherein the performance evaluation unit is characterized in that it derives the final performance of the current battery pack based on at least one piece of information among the SOH correction value, the battery aging, the voltage drop value, the cell voltage deviation value, and the accumulated charge count
  • the performance evaluation unit in the battery performance evaluation system is characterized by including a primary performance evaluation module that calculates a primary performance score of a current battery pack by taking into account the battery aging degree and a score assigned to an SOH correction value.
  • the performance evaluation unit in the battery performance evaluation system according to the present invention is characterized by further including a final performance evaluation module that calculates a final performance score of the current battery by utilizing at least one of a score assigned to a voltage drop value, a score assigned to a cell voltage deviation value, and a score assigned to a cumulative number of charges in addition to the first performance score.
  • the performance evaluation unit in the battery performance evaluation system according to the present invention is characterized by further including a grade assignment module that assigns a grade to the battery so as to match the final performance score of the current battery.
  • the performance evaluation unit in the battery performance evaluation system further includes a performance result providing unit that displays battery status information on a display unit of a user terminal connected to a server by operating an app; and the performance result providing unit includes a performance index providing module that displays information on the final performance score of the battery and the total number of defective battery cells on the display unit.
  • the performance evaluation unit in the battery performance evaluation system further includes a performance result providing unit that displays battery status information on a display unit of a user terminal connected to a server by operating an app; and the performance result providing unit includes a defective cell data providing module that displays, on the display unit, cell numbers of each defective battery cell, along with cell voltages corresponding to the cell numbers.
  • the performance evaluation unit in the battery performance evaluation system further includes a performance result providing unit that displays battery status information on a display unit of a user terminal connected to a server by operating an app; and the performance result providing unit includes an accumulated charge/discharge power amount data providing module that displays the accumulated charge power amount and accumulated discharge power amount of the battery for each day on the display unit.
  • the performance evaluation unit in the battery performance evaluation system further includes a performance result providing unit that displays battery status information on a display unit of a user terminal connected to a server by operating an app; and the performance result providing unit includes an individual cell voltage data providing module that displays information on individual cell voltages of a plurality of battery cells included in a current battery pack on the display unit.
  • the present invention has the following effects through the above-mentioned configuration.
  • the present invention has the effect of enabling accurate performance evaluation through compensation for battery packs under different conditions by deriving an SOH compensation value by compensating the SOH value among BMS data according to the battery pack temperature.
  • the present invention has the effect of enabling more precise performance evaluation by calculating aging based on battery cell voltage when evaluating current battery pack performance and deriving a final performance score together with an SOH correction value.
  • the present invention has the effect of allowing the user to easily identify the current defective cell by displaying the defective battery cell, the number of the corresponding cells, and the corresponding cell voltage on the display unit of the user terminal.
  • the present invention exhibits the effect of considering the cumulative number of times a battery is charged when deriving the final performance score of the battery, thereby also considering the performance deterioration due to charging of the battery.
  • the present invention has the effect of making it possible to easily obtain information on battery performance through a portable terminal such as a smartphone by installing and operating a related app on a user terminal and making it usable.
  • FIG. 1 is a conceptual diagram of a battery performance evaluation system according to one embodiment of the present invention
  • FIG. 2 is a block diagram of a server according to FIG. 1;
  • FIG. 3 is a block diagram of a data operation unit according to FIG. 2;
  • FIG. 4 is a block diagram of a performance evaluation unit according to FIG. 2;
  • FIG. 5 is an exemplary reference diagram for the first table stored in the DB according to FIG. 2;
  • FIG. 6 is an exemplary reference diagram for a second table stored in a DB according to FIG. 2;
  • FIG. 7 is an exemplary reference diagram for a third table stored in the DB according to FIG. 2;
  • FIG. 8 is an exemplary reference diagram for the fourth table stored in the DB according to FIG. 2;
  • FIG. 9 is an exemplary reference diagram for the fifth table stored in the DB according to FIG. 2;
  • FIG. 10 is a block diagram of a performance result providing unit according to FIG. 2;
  • FIG. 11 is a reference diagram for a user terminal display unit driven by a performance indicator providing module, a BMS data providing module, and a defective cell data providing module according to FIG. 10;
  • FIG. 12 is a reference diagram for a user terminal display unit driven by a battery pack temperature data providing module according to FIG. 10;
  • FIG. 13 is a reference diagram for a user terminal display unit driven by a cumulative charge/discharge power amount data provision module according to FIG. 10;
  • FIG. 14 is a reference diagram for a user terminal display unit driven by an individual cell voltage data providing module according to FIG. 10;
  • FIG. 15 is a flowchart of a battery performance evaluation method according to one embodiment of the present invention.
  • FIG. 16 is a flowchart of step S10 according to FIG. 15;
  • Fig. 17 is a flowchart of step S30 according to Fig. 15.
  • FIG. 1 is a conceptual diagram of a battery performance evaluation system according to one embodiment of the present invention.
  • the present invention relates to a battery performance evaluation system (1), and more specifically, to a battery performance evaluation system (1) that enables intuitive judgment of current battery information by displaying a final performance score calculated according to a set standard (or algorithm) using data acquired from a BMS (Battery Management System) (hereinafter referred to as “BMS data”) on a display unit of a user terminal (50).
  • BMS Battery Management System
  • the battery performance evaluation system (1) may include a battery pack (10), a CDS (Component Diagnostics Solution), a user terminal (50), and a server (70).
  • the battery pack (10) is a configuration equipped with a BMS for battery management, and includes batteries having an ESS used in electric vehicles, unmanned transport vehicles, etc.
  • This battery pack (10) may be, for example, a vehicle battery, and may be a means for supplying power required to start an engine of an electric vehicle.
  • the electric vehicle may include a pure electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a fuel cell electric vehicle (FCEV), etc.
  • the battery pack (10) includes a plurality of battery modules, and each battery module may include a plurality of battery cells.
  • each battery module may include several tens of battery cells.
  • the plurality of battery modules may be connected in series and/or in parallel to form a battery pack.
  • 'battery' is described below, it may mean a battery pack or a battery cell, depending on the case.
  • the battery pack (10) may be a battery pack mounted on an electric vehicle or a used battery pack separated from an electric vehicle.
  • BMS data from the battery pack (10) may be collected by the CDS (30) described below.
  • the CDS (30) communicates with the BMS through a dedicated cable connected to, for example, an OBD (On Board Diagnostics)-2 port in order to connect to the battery pack (10) mounted on the electric vehicle, and in the case of a battery pack (10) removed from an electric vehicle, they may be directly connected to each other.
  • OBD On Board Diagnostics
  • the CDS (30) is configured to acquire battery-related information through communication with the BMS of the battery pack (10) and then transmit the information to the user terminal (50) and/or server (70).
  • This CDS (30) may be configured to enable, for example, CAN (CANFD) communication or serial communication with the BMS.
  • the 'BMS data' acquired through the CDS (30) may be one or more arbitrary pieces of information from among SOH (State Of Health), SOC (State Of Cell), SOB (State Of Balance), battery cell voltage, battery cell temperature, number of slow charges, number of rapid charges, cumulative charge/discharge power, cumulative charge/discharge current, insulation resistance, internal resistance, etc., and it should be noted that the scope of the present invention is not limited by a specific example.
  • This CDS (30) can acquire the BMS data from the BMS when it receives a BMS data acquisition command from the display of the user terminal (50) on which the related app is driven.
  • the user terminal (50) is configured to connect to the server (70) to obtain battery status information through BMS data acquired by the user.
  • This user terminal (50) may include any configuration among various known or to be known devices such as a desktop, laptop, or smart phone, and the scope of the present invention is not limited by a specific means/device.
  • the battery status information can be acquired by installing a related application (APPlication; APP) and then running it to access the server (70).
  • APP related application
  • the battery status information can be acquired by accessing the server (70) by accessing a related webpage.
  • the user terminal (50) can be configured to enable wired or wireless communication with the CDS (30).
  • the term 'battery status information' can be any one or more of a plurality of pieces of information provided from the performance result provision unit (750) described below.
  • FIG. 2 is a block diagram of a server according to Figure 1.
  • the server (70) is configured to generate battery-related information and/or battery status information through BMS data acquired through CDS (30) or user terminal (50), and for this purpose, may include a data operation unit (710), a performance evaluation unit (730), a performance result provision unit (750), and a DB (790).
  • the DB (790) of the server (70) stores at least one of 'related basic information' such as vehicle manufacturer, vehicle type/year, number of cells by vehicle type and year, development name, PHEV/EV/hybrid/FCV, urban/basic model, rear-wheel/four-wheel drive, vehicle production year, total voltage, battery capacity, power, maximum output charge/discharge voltage, discharge end voltage, current limit, internal resistance value, and battery pack size, and it is preferable that the corresponding related basic information is also stored in the related app.
  • the server (70) may be configured to enable wired or wireless communication with the user terminal (50).
  • the term 'battery-related information' may be any one or more of a plurality of pieces of information provided by the data operation unit (710) and/or the performance evaluation unit (730) described below.
  • Figure 3 is a block diagram of a data operation unit according to Figure 2.
  • the data calculation unit (710) is configured to derive battery-related information through acquired BMS data, and may include one or more modules from among an SOH correction module (711), an aging calculation module (712), a voltage drop calculation module (713), a defective cell identification module (714), and an accumulated charge count calculation module (715).
  • the SOH correction module (711) is a configuration that corrects the SOH value using information related to SOH (a part of the BMS data) among the acquired BMS data. To explain in more detail, the SOH correction module (711) calculates the SOH correction value by correcting the received SOH value by considering the battery pack temperature. At this time, the 'battery pack temperature' may be the temperature of the battery pack (10) at the time of measurement.
  • the process of obtaining the SOH correction value through the acquired SOH value will be described in detail.
  • information on the deviation value (x) for each temperature section is stored in the DB (790) of the server (70) in the form of a first table (791) (see FIG. 5).
  • the deviation value (x) is set to 0.054, and in the section of 0 to 10 ⁇ C, the deviation value (x) is set to 0.087.
  • This deviation value (x) is a user-set value and its value is not limited by the above example.
  • the SOH correction value is a value that corrects or converts the received SOH value to the SOH value at 25 ⁇ C.
  • the reference temperature can also be changed by the user setting.
  • the SOH correction value is,
  • SOH 25 is an SOH correction value
  • SOH is an SOH value acquired from BMS
  • t is a value for the current battery pack (10) temperature.
  • the conversion value (x) becomes 0.082
  • the SOH conversion value (SOH 25 ) becomes 99.344 as 100 + 0.082 * (17-25).
  • the reference temperature changes, the value of '25' in equation (1) can also be changed to a corresponding value.
  • the aging calculation module (712) is a module that calculates the aging of the current battery based on the battery cell voltage.
  • the aging calculation module (712) can calculate the aging of the battery by comparing the new cell voltage and the current battery cell voltage acquired from the BMS.
  • the new SOC voltage can be specified as the cell voltage of the new battery corresponding to the current battery through the 'related basic information' previously stored in the DB (790).
  • the cell voltage of the current battery can be the average value of the battery cell voltages. Therefore, the aging of the battery is
  • V NEW represents the voltage of a new battery cell
  • V NOW represents the average voltage of the current battery cell.
  • V NEW the voltage of a new battery cell
  • V NOW the average voltage of the current battery cell
  • the voltage drop value calculation module (713) is a module that calculates the voltage drop degree of the current battery cell based on the new battery cell voltage (V NEW ) and the average voltage of the current battery cell (V NOW ). In the example above, the voltage drop value is 0.0056 V. Through the voltage drop value calculation module (713) as described above, the average voltage drop information for the battery cells in the battery pack (10) can be confirmed.
  • the defective cell identification module (714) is a module that identifies defective battery cells among a plurality of battery cells in a battery pack (10). More specifically, if the voltage of an individual battery cell exceeds a preset value from the average voltage (V NOW ) of the current battery cell, the cell can be identified as a defective cell. In other words, if the cell voltage among the individual battery cells exceeds the lower limit or upper limit range of the average voltage (V NOW ) of the battery cell, the cell can be identified as a defective cell.
  • the individual battery cell voltage exceeds the A value (e.g., 0.1 V) compared to the average voltage (V NOW ) of the current battery cell, it can be specified as a 'caution', and if it exceeds the B value (e.g., 0.5 V; A ⁇ B), it can be specified as a 'defect'.
  • the A and B values may be variable values that differ depending on the vehicle model/year, etc., or may be fixed values, and the scope of the present invention is not limited by a specific example.
  • the number of defective battery cells and the total number of defective battery cells are specified through the defective cell specifying module (714). In this case, the specified defective battery cells may be a concept including both caution and defective cells, or may be a concept including only defective cells, and there are no separate limitations thereon.
  • the cumulative charge count calculation module (715) is a module that specifies the cumulative charge count of the battery. In general, as the battery's performance deteriorates as the number of charges increases, the cumulative charge count must be specified in order to derive the final performance score of the current battery, which will be described later.
  • the cumulative charge count can be calculated based on the cumulative charge power included in the BMS data and the capacity of the battery pack. For example, the cumulative charge count is:
  • C NUM represents the cumulative charging number
  • P CHA represents the cumulative charging power
  • B CAP represents the battery pack capacity
  • 0.9 is a value multiplied by the battery pack capacity, and it is understood that it is not necessarily 0.9 and is a variable value depending on the user setting.
  • Figure 4 is a block diagram of a performance evaluation unit according to Figure 2.
  • the performance evaluation unit (730) is configured to derive the final performance of the current battery based on the battery-related information specified through the data calculation unit (710).
  • the performance evaluation unit (730) can derive the final performance of the current battery pack (10) based on one or more pieces of information, for example, from among the SOH correction value (SOH 25 ), the battery aging degree (B DET ), the voltage drop value, the cell voltage deviation value, and the cumulative number of charges (C NUM ), and may additionally utilize other information, such as the total driving distance and the model year, in addition to the above information.
  • the final performance of the current battery may be set so as not to exceed, for example, a preset score (for example, 100 points).
  • the cell voltage deviation value may be the maximum deviation value between the measured battery cell voltages or the maximum deviation value from the average value, and there are no separate restrictions thereon.
  • a second table (792) is stored in the DB (790) so as to be a criterion for assigning a score (T1) to each SOH correction value, for each SOH correction value range (see FIG. 6).
  • T1 a score assigned to each SOH correction value
  • the SOH correction value may be used as is without utilizing the second table (792), and in this case, the SOH correction value itself may be the score (T1) assigned.
  • the 'score (T1) assigned to the SOH correction value' may be a score assigned according to a criterion set in the second table (792) or may be the SOH correction value itself.
  • a third table (793) is stored in the DB (790) to serve as a criterion for assigning a score for each cell voltage deviation value range, so as to assign a penalty point (T2) to the cell voltage deviation value (see FIG. 7).
  • a penalty point (T2) of 0 point may be assigned, and when it is in the range of 0.5 to 0.59 V, a penalty point (T2) of 0.2 point may be assigned.
  • the cell voltage deviation value itself may be assigned as a penalty point (T2) without utilizing the third table (793).
  • the 'penalty point (T2) assigned to the cell voltage deviation value' may be a value assigned according to a criterion set in the third table (793) or may be the cell voltage deviation value itself.
  • a deduction point (T2) is given for the cell voltage deviation value, but in some cases, a bonus point (T2') may be given.
  • T2' When giving a bonus point (T2'), a smaller score can be given as the cell voltage deviation value increases.
  • the above cell voltage deviation value can be calculated through the defective cell specific module (715).
  • DB (790) stores a fourth table (794) in which scores are given for each voltage drop value range so as to give a deduction (T3) for the voltage drop degree (see FIG. 8). For example, when the voltage drop value is in the range of 0.01 to 0.15 V, 0 points can be given, and when it is in the range of 0.16 to 0.25 V, a score (T3) of '0.2' can be given.
  • the fourth table (794) may not be used and the voltage drop value may be used as it is, in which case the voltage drop value itself may become the score (T3) given.
  • the 'deduction (T3) given for the voltage drop degree' may be a value given according to the criteria set in the fourth table (794) or may be the voltage drop value itself. And although it is described above that a deduction (T3) is given for the voltage drop value, in some cases, a bonus point (T3') may be given. When assigning points (T3'), a smaller score can be assigned as the voltage drop value increases.
  • the voltage drop value above can be calculated through the voltage drop value calculation module (713).
  • a fifth table (795) is stored in the DB (790) in which points are granted for each cumulative number of charges (see FIG. 9). For example, when the cumulative number of charges is 1 to 100, 1 point may be granted, and when it is in the range of 101 to 150, 0.8 points (T4) may be granted. However, unlike the example described above, a deduction may be granted for the cumulative number of charges. That is, a larger deduction is granted as the cumulative number of charges increases.
  • the above performance evaluation unit (730) may include a first performance evaluation module (731), a final performance evaluation module (733), and a grade assignment module (735).
  • the primary performance evaluation module (731) is a module that calculates the primary performance score of the battery through the score (T1) assigned to the SOH correction value and the battery aging degree. For example, if the score (T1) assigned to the SOH correction value is '100' and the battery aging degree is '0.175' as in the example above, the primary performance score of the battery can be '99.825' by calculating 100 - 0.175.
  • the final performance evaluation module (733) is a module that calculates the final performance score of the battery by adding or subtracting one or more scores (T2 to T4) from the primary performance score of the battery based on the voltage drop value, cell voltage deviation value, and cumulative charge count.
  • the scores (T2 to T4) given at this time may be scores that match a previously stored table, but the scope of the present invention is not limited thereto.
  • the final performance evaluation module (733) may also calculate the final performance score by utilizing other additional information, such as the vehicle model year or mileage.
  • the grading module (735) is a module that assigns a grade to the battery to match the final performance score of the battery. For example, if the final performance score of the battery is within 90 to 100 points, an 'A' grade may be assigned, if it is within 80 to 89 points, a 'B' grade may be assigned, and if it is within 70 to 79 points, a 'C' grade may be assigned. However, the scope of the present invention is not limited by the above numerical range.
  • Fig. 10 is a block diagram of a performance result providing unit according to Fig. 2.
  • the performance result providing unit (750) is configured to display battery status information on the display unit of a user terminal (50) connected to a server (70) by app operation.
  • This performance result providing unit (750) may include a performance index providing module (751), a BMS data providing module (752), a defective cell data providing module (753), a battery pack temperature data providing module (754), an accumulated charge/discharge power amount data providing module (755), and an individual cell voltage data providing module (756).
  • FIG. 11 is a reference diagram for a user terminal display unit driven by a performance indicator providing module, a BMS data providing module, and a defective cell data providing module according to FIG. 10;
  • the performance indicator providing module (751) is a module that displays one or more pieces of information among the final performance score of the battery calculated through the final performance evaluation module (733), the battery grade assigned through the grade assignment module (735), and the total number of defective battery cells specified through the defective cell specification module (715) on the display unit of the user terminal (50).
  • the performance indicator providing module (751) as described above, the comprehensive results for the battery that is the subject of the performance evaluation can be intuitively understood.
  • the BMS data provision module (752) is a module that displays BMS data-related information acquired through the CDS (30) and the user terminal (50) on the display unit of the user terminal (50). Through this BMS data provision module (752), the user can view detailed information of the current battery.
  • the defective cell data provision module (753) is a module that displays the cell number (or ID) of each defective battery cell(s) identified through the defective cell specification module (715) along with the cell voltage corresponding to the cell number on the display unit of the user terminal (50). Accordingly, the user can check not only the total number of defective battery cells through the performance indicator provision module (751), but also information on the defective battery cell number and cell voltage through the defective cell data provision module (753).
  • FIG. 12 is a reference diagram for a user terminal display unit driven by a battery pack temperature data providing module according to FIG. 10.
  • the battery pack temperature data providing module (754) is a module that displays information about the temperature of the battery pack sensed on a daily basis on the display unit of the user terminal (50).
  • the battery pack temperature information provided by the battery pack temperature data providing module (754) may be provided in a graph format, for example.
  • the x-axis may display information about the sensing date
  • the y-axis may display temperature information.
  • Fig. 13 is a reference diagram for a user terminal display unit driven by a cumulative charge/discharge power amount data provision module according to Fig. 10.
  • the cumulative charge/discharge power amount data providing module (755) is a module that displays the daily battery cumulative charge power amount and cumulative discharge power amount on the display unit of the user terminal (50).
  • the information on the cumulative charge power amount and cumulative discharge power amount provided by the cumulative charge/discharge power amount data providing module (755) may be provided in the form of a graph, for example.
  • the x-axis may display information on the sensing date
  • the y-axis may display power amount (kWh) information.
  • the cumulative charge power amount and the cumulative discharge power amount may be displayed in different colors or shapes on the graph.
  • FIG. 14 is a reference diagram for a user terminal display unit driven by an individual cell voltage data providing module according to FIG. 10.
  • the individual cell voltage data providing module (756) is a module that displays information on individual voltages of a plurality of battery cells included in a battery pack on a display unit of a user terminal (50).
  • the individual voltages of the battery cells provided by the individual cell voltage data providing module (756) may be provided, for example, in a graph format.
  • the x-axis may display the number of each battery cell
  • the y-axis may display voltage information. It is preferable that each battery cell voltage be displayed, for example, in the form of a bar graph to easily recognize a defective cell, but the scope of the present invention is not limited thereto.
  • the advantage arises in that the current battery status and the corresponding price of the used electric vehicle can be calculated relatively easily.
  • Figure 15 is a flowchart of a battery performance evaluation method according to one embodiment of the present invention.
  • each sub-step of the battery performance evaluation method (S1) can be performed by the server (70).
  • Fig. 16 is a flowchart of step S10 according to Fig. 15.
  • battery-related information is derived (S10) through BMS data received from CDS (30) or user terminal (50).
  • Step S10 can be performed through a data calculation unit (710).
  • An SOH correction value can be calculated using SOH-related information received from a BMS (S110), and step S110 can be performed through an SOH correction module (711).
  • the aging degree of the battery can be calculated through step S10 (S120), and this can be performed through an aging calculation module (712).
  • step S10 the degree of decrease in the average voltage (V NOW ) of the current battery cell is calculated based on the voltage of a new battery cell (S130), and this can be performed through a voltage decrease value calculation module (71).
  • step S10 a defective battery cell in the battery pack (10) is specified (S140), which can be performed through a defective cell specifying module (714).
  • step S150 the cumulative number of charging cycles of the battery is specified (S150), which can be performed through a cumulative number of charging cycles calculation module (715).
  • the above-described steps (S110 to S150) may be performed substantially simultaneously or in any order, and there is no particular limitation thereto.
  • Fig. 17 is a flowchart of step S30 according to Fig. 15.
  • Step S30 when battery-related information is derived by step S10, the final performance of the current battery is derived (S30).
  • Step S30 may be performed through a performance evaluation unit (730).
  • step S30 may derive the final performance of the current battery pack (10) based on, for example, one or more pieces of information from among SOH correction value (SOH 25 ), battery aging (B DET ), voltage drop value, cell voltage deviation value, and cumulative charge count (C NUM ).
  • SOH correction value SOH 25
  • B DET battery aging
  • C NUM cumulative charge count
  • Step S30 will be described in detail.
  • the primary performance score of the battery is calculated by utilizing the score assigned to the SOH correction value of the battery and the score according to the aging of the battery (S310). Then, the final performance score of the battery is calculated by utilizing at least one of the score assigned to the voltage drop value (T2), the score assigned to the cell voltage deviation value (T3), and the score assigned according to the cumulative number of charges (T4) in the primary performance score (S330).
  • a battery grade matching the final performance score of the battery can be assigned. For example, a grade can be assigned to the battery pack (10) being evaluated.

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

Abstract

La présente invention concerne un système d'évaluation de performance de batterie (1) et son procédé (S1) et, plus spécifiquement, un système d'évaluation de performance de batterie (1) et un procédé (S1), qui effectue des calculs de données acquises à partir d'un système de gestion de batterie (BMS) selon des références préconfigurées (ou des algorithmes) pour obtenir un score de performance final, et affiche le score de performance final sur une unité d'affichage d'un terminal utilisateur (50), permettant ainsi une détermination intuitive d'informations de batterie actuelles.
PCT/KR2024/006217 2023-07-17 2024-05-09 Système d'évaluation de performance de batterie et procédé associé Pending WO2025018532A1 (fr)

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KR1020230092166A KR102634110B1 (ko) 2023-07-17 2023-07-17 배터리 성능 평가 시스템 및 그 방법
KR10-2023-0092166 2023-07-17

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KR102634110B1 (ko) * 2023-07-17 2024-02-07 주식회사 이브이링크 배터리 성능 평가 시스템 및 그 방법
KR20250169741A (ko) 2024-05-27 2025-12-04 주식회사 에이티비랩 온도 보정을 이용한 배터리 진단 시스템

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160076108A (ko) * 2014-12-22 2016-06-30 김선영 배터리 셀의 수명 예측 방법 및 이를 이용한 배터리 관리 시스템
WO2020021888A1 (fr) * 2018-07-25 2020-01-30 パナソニックＩｐマネジメント株式会社 Dispositif de gestion et système d'alimentation électrique
KR20220078003A (ko) * 2020-12-02 2022-06-10 엘아이지넥스원 주식회사 군용 배터리 수명 예측 장치 및 방법
KR20220168920A (ko) * 2021-06-17 2022-12-26 주식회사 엘지에너지솔루션 배터리 soh 추정 장치 및 방법
KR20230085972A (ko) * 2021-12-07 2023-06-15 주식회사 퀀텀솔루션 간편인증 후 원격제어기술을 이용하여 전기차의 배터리 성능을 진단하는 시스템 및 방법
KR102634110B1 (ko) * 2023-07-17 2024-02-07 주식회사 이브이링크 배터리 성능 평가 시스템 및 그 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220064547A (ko) 2020-11-12 2022-05-19 주식회사 퀀텀솔루션 전기자동차의 배터리 성능진단을 위한 배터리 성능진단용 간이진단기 및 동작 방법

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160076108A (ko) * 2014-12-22 2016-06-30 김선영 배터리 셀의 수명 예측 방법 및 이를 이용한 배터리 관리 시스템
WO2020021888A1 (fr) * 2018-07-25 2020-01-30 パナソニックＩｐマネジメント株式会社 Dispositif de gestion et système d'alimentation électrique
KR20220078003A (ko) * 2020-12-02 2022-06-10 엘아이지넥스원 주식회사 군용 배터리 수명 예측 장치 및 방법
KR20220168920A (ko) * 2021-06-17 2022-12-26 주식회사 엘지에너지솔루션 배터리 soh 추정 장치 및 방법
KR20230085972A (ko) * 2021-12-07 2023-06-15 주식회사 퀀텀솔루션 간편인증 후 원격제어기술을 이용하여 전기차의 배터리 성능을 진단하는 시스템 및 방법
KR102634110B1 (ko) * 2023-07-17 2024-02-07 주식회사 이브이링크 배터리 성능 평가 시스템 및 그 방법

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