WO2012088555A1 - Procédé destiné à déterminer la capacité de charge maximum actuellement disponible - Google Patents

Procédé destiné à déterminer la capacité de charge maximum actuellement disponible Download PDF

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Publication number
WO2012088555A1
WO2012088555A1 PCT/AT2011/000523 AT2011000523W WO2012088555A1 WO 2012088555 A1 WO2012088555 A1 WO 2012088555A1 AT 2011000523 W AT2011000523 W AT 2011000523W WO 2012088555 A1 WO2012088555 A1 WO 2012088555A1
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WO
WIPO (PCT)
Prior art keywords
charge
accumulator
voltage
cmax
current
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PCT/AT2011/000523
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German (de)
English (en)
Inventor
Fiorentino Valerio CONTE
Hartmut Johann POPP
Original Assignee
Österreichisches Forschungs- Und Prüfzentrum Arsenal Gesellschaft M.B.H.
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Application filed by Österreichisches Forschungs- Und Prüfzentrum Arsenal Gesellschaft M.B.H. filed Critical Österreichisches Forschungs- Und Prüfzentrum Arsenal Gesellschaft M.B.H.
Publication of WO2012088555A1 publication Critical patent/WO2012088555A1/fr

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Classifications

    • 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
    • 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]
    • G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • 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]
    • G01R31/3644—Constructional arrangements
    • G01R31/3647—Constructional arrangements for determining the ability of a battery to perform a critical function, e.g. cranking
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references

Definitions

  • the invention relates to a method for determining the currently available maximum charging capacity according to the preamble of patent claim 1.
  • the invention also provides a device for determining the currently available n.
  • the currently available maximum charge capacity is understood to be that charge quantity with which a rechargeable battery can be charged at a certain time during its aging process or the charge amount that can be maximally removed from the rechargeable battery after complete charging.
  • the currently available maximum charge capacity is an indicator of the aging of the respective accumulator. As aging increases, the currently available maximum charge capacity of the accumulator decreases.
  • both a single accumulator cell such as a
  • Lithium-polymer battery but also understood a network with a variety of battery cells.
  • series circuits and parallel circuits of battery cells are to be understood as an accumulator.
  • Inventive methods and devices are used in particular in the field of automated determination of the aging state of accumulators, such as in the automotive sector in electric vehicles.
  • the object of the invention is to provide a method and a device which enables a simple and cost-effective as well as reliable determination of the currently available maximum charging capacity.
  • the invention solves this problem in a method of the type mentioned above with the features of the characterizing part of claim 1. Further, the invention solves this problem in a device of the type mentioned above with the features of the characterizing part of claim 10th
  • a calibration table which in each case has an impedance Z for each of the measurement frequencies and each of the charge states and for the currently available maximum charge capacity, provides that
  • a voltage is applied to the accumulator, which comprises a DC component or a direct current is impressed on the accumulator,
  • the impedance of the accumulator is determined as a quotient between the impressed on the accumulator or the AC voltage occurring on the accumulator and the accumulator flowing through or impressed the accumulator current, and
  • the currently available maximum charge capacity of the accumulator is determined as the charge value stored in a calibration data record or by interpolation or averaging of the selected charge values. It is advantageous that measured values can be recorded by a single calibration on a reference accumulator of the same construction type, which values can be used for all accumulators of the same construction type.
  • a multiplicity of different construction types of accumulators can be easily checked and the aging state of the respective accumulators checked. The measurement results can be determined in a very short time and have a high accuracy.
  • the calibration data sets are recorded by a) the total currently available in the reference accumulator maximum charging capacity is measured and stored as a charge value in each calibration record at different aging states of the reference accumulator b) the Referenzakkumulator in the respective aging state by charging and / or Unloading is brought into different states of charge, wherein
  • a voltage is applied to the reference accumulator, wherein the voltage comprises a DC component and an AC component or a current is impressed on the reference accumulator,
  • the alternating component of the voltage applied to the reference accumulator is set or measured at the respective predetermined frequency
  • the alternating component of the current flowing through the Referenzakkumulator current is set or measured at the respective predetermined frequency
  • an impedance is determined as a quotient between the alternating component of the voltage applied to the reference accumulator and the alternating component of the current flowing through the reference accumulator,
  • the calibration table is stored in one of the calibration data sets together with the currently available maximum capacity in the reference accumulator.
  • a further preferred aspect of the invention provides that a number of different, preferably from 3 to 10, charging states are used for each of the calibration data sets, which is between an upper and a lower charge limit, in particular between 10% and 90% of the current total available charge, lie. This allows a simple determination of the calibration records and a simple implementation of the calibration.
  • the predetermined frequencies are selected in the range between 5mHz and 5kHz. With measured values of the specified frequencies, the aging state and the currently available maximum charge capacity can be advantageously determined.
  • the measurement frequencies are determined by
  • those of the predetermined frequencies are used as measurement frequencies, in which a strong dependence and / or an unambiguous assignability between the determined impedance of the reference accumulator and the aging state is possible.
  • the dependence of the determined impedance on the state of aging as well as the total available maximum charge capacity corresponding to the aging state is determined separately for each charge state and each frequency by determining a linear or quadratic interpolation of the impedance values as a function of the total available maximum charge capacity, and b) those frequencies are used as measurement frequencies, in which a particularly high linear or quadratic dependence of the determined impedance of
  • the DC component of the voltage corresponds to the no-load voltage of the accumulator for the respective aging state and the respective state of charge.
  • Each of the first interpolating lk (f, SOC) is compared with the second interpolating IM (f), wherein in the first Interpolierenden as state of charge of the current
  • the match value is formed as an integral over the magnitude of the difference of the respective first interpolating Ik (f, SOC) and the second interpolator IM (f).
  • a memory is stored on the following calibration data, which originate from a reference accumulator of the same construction type:
  • a calibration table comprising an impedance for each of the measurement frequencies and each of the charge states.
  • a measuring control unit for controlling the current measuring unit or the voltage measuring unit and the AC voltage source or the AC power source
  • an impedance determining unit for determining the impedance by forming the quotient of the measured with the current measuring unit or with the AC power source impressed AC and the output from the voltage source or measured by the voltage measuring unit AC voltage component
  • a measured value memory for storing the charge level control unit determined during the measurement stored in the accumulator charge amounts and a measurement table comprising data sets with each
  • Calibration table has the highest agreement with the recorded measurement table
  • the aging state of a rechargeable battery of a predetermined type of construction can advantageously be determined.
  • separate calibration data can be stored separately in the calibration memory.
  • a preferred aspect of the invention provides that for a more precise determination of the state of aging, it may be provided that the voltage source Associated with voltage regulator, which adjusts the DC voltage component of the voltage supplied by the voltage source to the open circuit voltage of the accumulator.
  • a further particular embodiment of the invention provides that the measuring control unit comprises a DC voltage regulator which regulates the DC component of the voltage source in such a way that no DC current or a defined, predetermined DC current flows through the accumulator. This eliminates disturbing effects on the measurement.
  • the peak value emitted by the AC voltage source or emitted by the AC power source is determined such that the peak value of the alternating current flowing through the accumulator is in the range between 0 , 02 to 0.1 is the nominal capacity of the accumulator per hour and / or
  • the charge level control unit is designed to set the respective state of charge.
  • a unit for determining the maximum available charge capacity which controls the charge level control unit for charging and / or emptying of the Referenzakkumulators and which is supplied to the determined by the current measuring unit measured value for the direct current, wherein the unit is the current measuring unit determined during full charge and / or discharge flowing amount of charge and outputs as the maximum available charge capacity at its output.
  • this is designed as a modular component with four terminals, of which two terminals are connected to the or an accumulator or a Referenzakkumulator or are connected and the remaining two terminals are connected to a load or that a load is connected to this, and / or that at least one switch for interrupting at least one of the connections to the terminals for the load is provided.
  • Such a device can be advantageously connected to different accumulators, reference accumulators and loads and be permanently installed in vehicles.
  • a calibration unit is provided which is at different times during the lifetime of the reference accumulator
  • a) determines the currently available maximum charge capacity by means of the unit, b) causes the impedance determination unit to record a measurement table, and c) creates a calibration data record with the currently available maximum charge capacity, the individual charge values used and the recorded calibration table and stores this in the calibration memory.
  • the individual calibration data can be easily recorded and kept available for further measurements.
  • FIG. 1 shows a circuit diagram of the preferred embodiment.
  • 2 shows the individual components of the measuring control unit for calibration and for further processing of the recorded information and for determining the currently available maximum charging capacity.
  • Fig. 3 shows schematically the calibration data memory.
  • 4 shows the impedance values recorded at different frequencies and aging states.
  • 5 shows the frequency characteristic of the complex impedance value for a plurality of aging states.
  • Fig. 1 shows a first embodiment of the invention with an accumulator 1.
  • a voltage source 3 Parallel to the accumulator 1, a voltage source 3 is connected, which is designed to deliver a voltage U.
  • the AC voltage component U ⁇ has a peak value 0 and a frequency f which can be set by an external measuring control unit 20.
  • the circuit shown in Fig. 1 further comprises a current measuring device 5, which measures the current flowing through the accumulator 1 current I.
  • the current measuring device 5 is connected to the measuring control unit 20.
  • the direct current component l is either a discharge current that is caused by the discharge of the Accumulator 1 is caused on a load 15 or a charging current, which is caused by the charging of the accumulator 1 to the voltage source 3.
  • a switch 11 is provided which is connected in series with the load 15 connected to the accumulator 1.
  • An impedance determination unit 14 determines from the ratio of the AC voltage component U ⁇ to the AC component I-, each with the same frequency f, an impedance Z.
  • the impedance determination unit 14 is supplied with the value of the AC voltage component U ⁇ of the voltage delivered by the voltage source 3 and the measured value of the alternating current component I determined by the current measuring instrument 5 at the respective given frequency f 1 f 0 '.
  • the impedance determination unit 14 determines the ratio of the two measured values as well as the phase shift and provides at its output a complex impedance value corresponding to the impedance Z.
  • the voltage value determined by means of a voltage measuring unit 6 connected in parallel to the reference accumulator 1 ' can also be used to determine the impedance Z.
  • the voltage and current values determined by the voltage measurement unit 6 and by the current measurement unit 5 are supplied to the impedance determination unit 14.
  • the voltage measuring unit 6 and the current measuring unit 5 determine only the AC voltage component U ⁇ of the am Referenzakkumulator 1 voltage applied U and the AC component I- of the accumulator 1 flowing through current I.
  • the accumulator 1 can be impressed by means of a non-illustrated and with one of its connections to each one of the terminals of the accumulator 1 AC power source an alternating current l ⁇ the frequency f.
  • the AC power source is driven by the measurement control unit 20.
  • the determination of the impedance Z can take place by means of the voltage measuring unit 6 and / or the current measuring unit 5 as described in the previous paragraph.
  • the peak value Ü of the alternating component U ⁇ of the voltage is approximately in the range of 10 to 100 mV.
  • the peak value ⁇ of the alternating current I ⁇ of the current is approximately in the range from 50 mA to 2000 mA.
  • An alternative advantageous determination of the peak value Ü of the alternating voltage can be determined such that the peak value ⁇ of the alternating current multiplied by one hour is in the range from 0.02 to 0.1 of the rated capacity CN of the accumulator 1.
  • either the peak value ⁇ of the alternating component I ⁇ of the current I can be set directly or the peak value Ü of the alternating component U ⁇ of the voltage U can be set in accordance with the preset peak value ⁇ of the alternating component I ⁇ .
  • This impedance Z depends on the aging state of the accumulator 1 and on the state of charge of the accumulator 1 and the frequency f used in each case.
  • the aging state of the accumulator 1 can, as already mentioned, be expressed by the currently available maximum charge capacity Cmax.
  • the embodiment shown in the embodiment comprises the voltage source 3, the ammeter 5, the switch 11 and the measurement control unit 20, wherein the measurement control unit 20 controls the switching position of the switch 1 1.
  • the illustrated circuit further comprises two terminals A, B for connecting the accumulator 1 and terminals C, D for connecting a load 15.
  • the illustrated embodiment can be used both for calibration and for determining the currently available maximum amount of charge.
  • FIG. 4 A typical measurement result is shown in Fig. 4, in which only the amounts of the individual detected impedances IZI / C in relation to the currently available maximum charge amount Cmax of the accumulator 1 are shown on the ordinate in this diagram.
  • the aging of the accumulator 1 measured in measuring and Kalibrierzyklen CZ, and on the other hand, the frequency f shown.
  • the aging of the accumulator 1 can be represented not only by the currently available maximum charging capacity but also by the number of charging and discharging cycles or calibration cycles CZ used.
  • the impedance Z of the rechargeable battery 1 is determined in each case at a number of measurement frequencies (f1, .... f3), as described above, and the measured values are stored together with the respective measurement frequency in the memory 2.
  • a calibration is performed first.
  • calibration data K which are shown in FIG. 3, are recorded.
  • a comparison is made during operation between the recorded calibration data K with data recorded directly on the accumulator 1 to be tested.
  • a Referenzakkumulator 1 'of a type of construction is used and connected to the two terminals A, B of the device.
  • the measurement control unit 20 further includes a charge level control unit 7, as shown in Fig. 2.
  • the charge level control unit 7 is needed only for calibration purposes to charge the reference accumulator 1 'to a desired state of charge while its functionality is not required in determining the currently available maximum charge amount Cmax. While During calibration, the charge level control unit 7 is fed by an external voltage source (not shown).
  • the charge level control unit 7 in the present embodiment of the invention, it is possible to accurately determine the currently available maximum charge amount Cmax as the reference value.
  • the reference accumulator 1 ' is first fully charged and then discharged.
  • the current flowing from the reference accumulator 1 " is measured and integrated over time by means of the ammeter 5.
  • the currently available maximum charge quantity Cmax is easily obtained. first to completely discharge and to integrate the charge current during the charging of the reference accumulator 1 "in order to arrive at the currently available maximum charge quantity Cmax.
  • Reference accumulator 1 has been removed. Conversely, it is also possible to completely discharge the reference accumulator 1 'and then apply it to a charge corresponding to a state of charge SOC1 SOC4.
  • the reference accumulator 1 during calibration the reference accumulator 1 "is examined at four different charge states, one corresponding to one of the charge states SOC4 full charge and another charge state SOC1 when the reference battery 1 'is fully discharged
  • the two remaining charge states SOC2, SOC3 are at regular intervals between full charge and full discharge, ie one third of the currently available maximum charge and two thirds of the currently available maximum charge.
  • the charge level control unit 7 a frequent loading and unloading of the Referenzakkumulators 1 'and thus a rapid aging of the Referenzakkumulators 1' can be achieved in order to obtain a record of the complete aging process in the shortest possible time.
  • the calibration takes place on the basis of the measurement of the electrical properties of the reference accumulator 1 ', the reference accumulator 1' being measured at different aging states. Between the individual measurements, a number of charging and discharging processes are performed, which cause aging of the reference accumulator 1 '.
  • the currently available maximum charge capacity Cmax is determined by full charge or complete discharge, whereby - as already mentioned - the current integral of the charge or discharge current is determined.
  • the determination of the currently available maximum charge capacity Cmax in the present embodiment by the charge level control unit 7 and the current measuring unit 5 and a downstream of the current measuring unit 5 unit 12 in the form of an integrator.
  • the Referenzakkumulator 1 ' is fully charged and then discharged.
  • the switch 11 will be opened and the reference accumulator 1 'will be discharged via the load 15.
  • the voltage source 3 can be set to a DC value below the open circuit voltage of the reference accumulator 1 ', whereby it is discharged.
  • the impedance Z of the reference accumulator 1 ' is determined for each calibration measurement for the individual charge states SOC1, SOC4 and for a number of predetermined frequencies fV, f10'.
  • the alternating voltage U ⁇ impressed by the voltage source 3 as well as that determined by the current measuring device 5 are determined
  • Measured values for the alternating voltage U ⁇ and for the alternating current I- are fed to an impedance determination unit 14, shown in FIG. 2, which determines an impedance value Z as a quotient of the measured values.
  • an impedance value Z is determined for the further processing.
  • the real part Re (Z) and imaginary part Im (Z) or the angle arg (Z) of the impedance Z can also be used for the further calculations.
  • the calculated impedance value is stored in a calibration memory 8.
  • the number of frequencies fV, f10 ' can be reduced to a number of measurement frequencies f1,..., F3.
  • the measurement of a rechargeable battery 1 during operation can be performed faster, on the other hand, it is also possible to select those predetermined frequencies f1 'f10', in which a particularly strong
  • SOC1, SOC4 and for each given frequency fV f10 'each determines the dependence of the impedance on the aging or on the currently available maximum charge Cmax.
  • a quadratic interpolation of the determined values for the impedance Z is determined as a function of the currently available maximum charge Cmax.
  • Those predetermined frequencies f1 ', f10', for which there is a particularly high linear or quadratic dependence of the impedance Z on that of the currently available maximum charge Cmax, are selected as measurement frequencies f1,..., F3, as shown in FIG ,
  • the number of measurement frequencies f1 f3 is set to three in the present embodiment.
  • FIG. 3 shows schematically the calibration data K stored in the calibration memory 8.
  • the calibration data K comprises a number of measurement frequencies f1, f3, the determination of which has been described above. Furthermore include the
  • Calibration data K a number of calibration records K1 K4, each of which has been determined during a calibration measurement.
  • Each of the calibration data records K1,..., K4 respectively comprises the currently available maximum charge Cmax determined before or after the calibration measurement.
  • each of the calibration data sets K1,..., K4 comprises a number of charge states SOC1, SOC4, each described by a charge value and a calibration table TK, each having an impedance value for each combination with a charge state SOC1, SOC4 and one of the measurement frequencies f1, f3 having.
  • the calibration data K are present in the calibration memory 8 after the calibration process has been carried out.
  • the rechargeable battery 1 For the determination of the aging state of a rechargeable battery 1, which is of the same type as the reference rechargeable battery V, the rechargeable battery 1 is connected to the two terminals A, B of the measuring circuit shown in FIG. 1 instead of the reference rechargeable battery 1 '.
  • the impedance Z of the accumulator 1 is determined at each of the measurement frequencies f1 f3, as already described above, by the impedance determination unit 14.
  • the determined impedance values are stored in a measured value memory 2.
  • the instantaneous state of charge SOC of the accumulator 1 is determined, wherein it is not necessary for the state of charge SOC to correspond to a state of charge from the number of states of charge SOC1 SOC4. in the
  • Data memory 2 is for the determined instantaneous state of charge SOC and each of the
  • a charge level control unit Measuring frequencies f1 f3 each before an impedance Z.
  • a charge level control unit 7 is provided, which completely empties the accumulator 1 gradually, wherein the
  • Accumulator 1 assumes all of the charge states SOC1 SOC4 in turn. After reaching each of the states of charge, the impedance Z at each of the
  • Measurement frequencies f1 f3 determined and stored in the measured value memory 2. in the
  • Data memory 2 thus has an impedance value Z for each of the charge states SOC1, SOC4 and for each of the measurement frequencies f1 f3.
  • the values stored in the measured value memory 2 are compared with the calibration tables KT stored in the calibration memory 8.
  • a match value M is determined, which determines the correspondence of the calibration table KT with the data stored in the measured value memory 2.
  • the calibration table KT is determined which has the best match with the measured values or impedance values stored in the measured value memory 2.
  • the charge value assigned to the respective calibration table is considered to be the currently available maximum charge capacity Cmax.
  • calibration tables KT can be used, which have the best match with the measured values stored in the measured value memory 2.
  • the currently available maximum charge capacity Cmax may be a weighted average between the respective ones
  • Each of the charge values of calibration tables KT with a higher match is weighted more heavily than charge values of calibration tables KT with a smaller match.
  • a match value M is determined by a comparison unit 9, which subsequently also determines the currently available maximum load capacitance Cmax.
  • an interpolating IK (f, SOC) is determined both for the impedance values stored in the respective calibration table KT and for the impedance values stored in the measured value memory 2. This is determined in the present embodiment by polynomial interpolation with degree 2.
  • the interpolating IK (f, SOC) determined for the calibration table 8 is a function in two variables, where the respective frequency f and the instantaneous state of charge SOC act as variables.
  • Data storage 2 stored impedance values as a function with two variables just as the interpolating IM (f, SOC) of the impedance values of the calibration table TK determined.
  • Range of measurement frequencies f1, f3 and in the field of charge states SOC1 SOC4 are used.
  • the interpolating value IM (f) of the values stored in the measured value memory 2 is a function after a variable, where only the frequency f acts as a variable.
  • the integral over the amount of the difference between the two interpolators IM, IK in the range of the measuring frequencies f1, f3 can be used, for example. wherein the interpolating the calibration table is evaluated only in the range of the current state of charge SOC.
  • accumulator 1 a new lithium polymer battery is used.
  • LiMn204 is used as the positive electrode of the battery 1.
  • the rated capacity of the accumulator is 5.2 C at a maximum voltage of 4.2V and a minimum voltage of 2.8V.
  • the impedance at the beginning of the life of the accumulator 1 is less than 6 mOhm.
  • the accumulator 1 has a lifetime of 1500 charges and discharges. In a preparation phase, the accumulator 1 is fully charged and discharged five times before the actual measurement in order to rule out the effects of molding processes as possible.
  • the currently available maximum charge quantity Cmax and the impedances for individual charge states SOC at the individual frequencies f1 'f10' are determined.
  • the accumulator 1 is subjected to a number of aging cycles, the accumulator 1 is discharged at a constant current to 2.8V and is then charged with constant voltage to 4.2V, the charge is aborted when the charging current is less than 530mA ,
  • the accumulator is used in the entire bandwidth of different voltage levels and different aging effects are produced at different voltage levels.
  • the impedance measurement at different frequencies is carried out in the range between 5mHz and 5kHz and determined with an alternating current with a peak value of 250mA.
  • the measurements are made at temperatures of 22 ° C.
  • FIG. 5 shows the curves V5, V150, V300, V450 of the impedance Z for different frequencies after 5, 150, 300 and 450 cycles, showing only those measurements which have been determined with a charge state SOC of 40%; other states of charge give similar effects.
  • increased impedance values result in the course of aging of the accumulator, ie. H. with an increasing number of charge / discharge cycles.

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Abstract

L'invention concerne un procédé et un dispositif destinés à déterminer la capacité de charge maximum actuellement disponible (Cmax) d'un accumulateur (1), sur la base des données d'étalonnage (K) suivantes : des fréquences de mesure (f1... f3), des jeux de données d'étalonnage (K1... K4) comprenant une valeur de charge, un nombre d'états de charge ainsi qu'un tableau d'étalonnage (Tk), indiquant des impédances pour des fréquences de mesure et des états de charge. Selon l'invention, on détermine l'état de charge (SOC) de l'accumulateur (1), l'impédance (Z) de l'accumulateur (1) étant déterminée de façon à ce qu'elle corresponde au quotient entre la tension alternative (U~) à laquelle l'accumulateur (1) est soumis et le courant (I~) circulant dans l'accumulateur (1), une impédance (Z) étant enregistrée dans un tableau de mesure (Tm) pour chacune des fréquences de mesure (f). Les valeurs du tableau de mesure (Tm) sont comparées aux valeurs de chacun des tableaux d'étalonnage (Tk) enregistrés dans les jeux de données d'étalonnage (K1... K4). Parmi les valeurs de charge (Cmax,1....Cmax,n) enregistrées dans un jeu de données d'étalonnage (T'), on choisit celle ou celles dont la concordance est caractérisée par la plus grande valeur de concordance (M).
PCT/AT2011/000523 2010-12-30 2011-12-30 Procédé destiné à déterminer la capacité de charge maximum actuellement disponible WO2012088555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA2163/2010 2010-12-30
ATA2163/2010A AT510877B1 (de) 2010-12-30 2010-12-30 Verfahren zur bestimmung der momentan verfügbaren maximalen ladekapazität

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DE102014222371A1 (de) 2014-11-03 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Schaltungsanordnung und Verfahren zur Ermittlung der Impedanz einer Prüfbatterie
US10180461B2 (en) 2012-11-29 2019-01-15 Mitsubishi Electric Corporation Battery internal state estimation apparatus
CN112271317A (zh) * 2020-09-11 2021-01-26 天津力神电池股份有限公司 一种调控批量电芯soc的方法
CN114388941A (zh) * 2022-01-14 2022-04-22 中国人民解放军国防科技大学 一种电池低温无损交流自加热的参数选取方法及装置

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