WO2005031380A1 - Verfahren und vorrichtung zur bestimmung des ladezustandes einer batterie - Google Patents
Verfahren und vorrichtung zur bestimmung des ladezustandes einer batterie Download PDFInfo
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- WO2005031380A1 WO2005031380A1 PCT/EP2004/010783 EP2004010783W WO2005031380A1 WO 2005031380 A1 WO2005031380 A1 WO 2005031380A1 EP 2004010783 W EP2004010783 W EP 2004010783W WO 2005031380 A1 WO2005031380 A1 WO 2005031380A1
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- Prior art keywords
- battery
- frequency
- charge
- state
- impedance
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 230000009466 transformation Effects 0.000 claims description 13
- 230000032683 aging Effects 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 239000003792 electrolyte Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001453 impedance spectrum Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000002847 impedance measurement Methods 0.000 description 2
- 238000001566 impedance spectroscopy Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000013208 measuring procedure Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
Definitions
- the invention relates to a method for determining the state of charge (SOG) of a battery.
- a battery is to be understood here to mean a general electrochemical generator which contains one or more galvanic cells in which electrical energy is obtained by means of chemical reactions.
- the method and the device according to the invention are particularly suitable for determining the state of charge of rechargeable lead, nickel-cadmium (Ni-Cd) and nickel-metal hydride (Ni-MH) batteries.
- the invention further relates to a device suitable for carrying out the method.
- Known methods for determining the state of charge of a battery are based on determining the concentration of the electrolyte in the battery by directly measuring the properties of the electrolyte. For example, the density, pH value or conductivity of the electrolyte can be measured and its concentration can be inferred from this. These procedures are only applicable to battery types where the electrical lyt actually takes part in the overall reaction, such as with lead acid batteries. They are complex because they require access to the inside of the battery. After all, they cannot be carried out with sufficient accuracy under all conditions, since the electrolyte concentration in the battery is not uniform. An overview of frequently used methods for determining the state of charge for various areas of application for batteries can be found in the publication by S. Piller, M. Perrin and A. Jossen: “Methods for state-of-charge determination and their applications", Journal of Power Sour - ces 96 (2001) 113-120.
- a known method for examining electrochemical systems such as rechargeable batteries is impedance spectroscopy.
- the complex impedance of the battery is measured at many frequencies, i.e. in a complete frequency spectrum.
- Locus also known as the Nyquist diagram.
- the imaginary part of the complex impedance is plotted over the real part of the complex impedance.
- the typical locus of a commercially available battery is plotted in FIG. 1. It is common to plot the imaginary axis in reverse order, ie positive values of Z "below and negative values of Z" above the real axis.
- the internal resistance of the battery was identified as a useful parameter for predicting the state of charge using impedance spectroscopy [RT Barton and PJ Mitchell: "Estimation of the residual capacities of maintenance-free lead-acid batteries - Identification of a parameter for the prediction of state-of-charge", Journal of Power Sources 27 (1989) 287-295].
- RT Barton and PJ Mitchell "Estimation of the residual capacities of maintenance-free lead-acid batteries - Identification of a parameter for the prediction of state-of-charge", Journal of Power Sources 27 (1989) 287-295].
- German patent application DE 102 05 120 AI describes a method and a device for determining the internal resistance of a battery.
- the battery is excited by existing high-frequency current fluctuations, and the resulting voltage response is measured.
- the internal resistance of the battery is determined via a performance analysis.
- German patent DE 197 25 204 CI describes a method and a device for determining the SOC of a lithium battery in a remote control application. The method is based on the simultaneous measurement of the internal cell resistance and the voltage at the terminals of the battery.
- the internal resistance of the device under test can be easily extracted from the locus of the impedance.
- the internal resistance corresponds to the magnitude of the impedance at the intersection of the locus with the real axis. This relationship is also used, for example, as an indicator of the electrical efficiency of fuel cells, as described in international patent application WO 02/27342 A2. Presentation of the invention
- the invention has for its object to further develop a generic method so that a quick and reliable determination of the state of charge of a battery is made possible and thus the disadvantages of the prior art are overcome.
- the object is achieved by a method according to claim 1.
- this object is also achieved by a device according to claim 14.
- a crossover frequency for an impedance of the battery excited by an AC signal is determined, and the crossover frequency is assigned to the state of charge of the battery.
- the crossover frequency is the frequency at which the locus of the complex impedance of the battery intersects the real axis in an impedance diagram, and is referred to below as f ⁇ , since the imaginary part of the impedance changes its sign there.
- the AC signal that excites the battery is generated by an AC power source connected to the battery.
- the method is preferably used to determine the state of charge of batteries in operation.
- the AC power source is therefore preferably a load located in the power grid supplied by the battery or an AC power source located in the power grid that is not necessarily controllable.
- the power grid supplied by the battery often contains loads that emit interference signals to the power grid. These interference signals present in the power network overlay the direct current supplied by the battery with an alternating current component.
- resistors in the power network that are switched at a certain frequency are used as alternating current sources.
- AC sources that excite the battery may be present in the power network that contains the battery.
- the method according to the invention can thus be carried out as a purely passive method in the sense that no additional current source, which is necessary specifically and exclusively for carrying out the method, is required to excite the battery.
- the battery for carrying out the method with a controllable alternating current source is also provided to be connected if the alternating current signals present in the power supply system supplied by the battery do not have sufficiently high amplitudes in a frequency range including the crossover frequency.
- a voltage drop across the battery and a current intensity of an alternating current flowing through the battery are measured.
- the crossover frequency determined according to the invention is the frequency at which the locus of the complex impedance of the battery intersects the real axis in an impedance diagram.
- the invention makes use of the surprising discovery that there is a clear relationship between the crossover frequency and the state of charge of the battery.
- the crossover frequency thus corresponds to the crossover frequency of a circuit consisting of the battery and an alternating current source.
- the resonance conditions only the properties of the battery and not the internal resistances, internal capacities or inductances present in the AC power source should determine the resonance conditions.
- determining the passage frequency as precisely as possible is particularly expedient, other frequencies with comparable properties can of course also be used to implement the invention.
- the crossover frequency used according to the invention therefore not only denotes the exact intersection between the locus of the complex impedance of the battery and the real axis, but also other frequencies with comparable properties, especially the resonance frequency.
- the method is based on a clear relationship between the penetration frequency and the state of charge of the battery.
- the measurements of the alternating voltage dropping across the battery and the current strength of the alternating current flowing through the battery are carried out for different alternating current frequencies.
- a frequency range is preferably specified which typically contains crossover frequencies that occur. This frequency range can then be scanned at predetermined frequency intervals or continuously.
- a phase difference between the phase of the AC voltage is provided and to determine the phase of the alternating current.
- phase difference is determined for each scanned frequency value in order to determine the frequency at which this phase difference disappears.
- This frequency is the crossover frequency and is assigned to a charge level on the basis of the relation between crossover frequency and state of charge.
- the state of charge determined in this way can then be displayed to a user of the battery or transmitted to a system which monitors the operating states of the battery.
- the complex-value impedance of the battery is determined as a function of the AC frequency.
- a fast Fourier transformation is preferably carried out.
- the frequency at which the imaginary part of the impedance disappears is then determined from the results of the impedance calculation.
- the relationship between penetration frequency and state of charge is additionally influenced by the operating temperature of the battery and the direct current flowing through the battery.
- the operating temperature and the current intensity of the direct current flowing through the battery are therefore recorded and taken into account in the relationship between the passage frequency and the state of charge.
- the relationship between the penetration frequency and the state of charge is influenced to a small extent by the aging state of the battery, but is accessible to measurement.
- the accuracy with which the state of charge is determined can therefore be further increased by taking the aging state of the battery into account in the relationship between the penetration frequency and the state of charge.
- Another aspect of the invention is to provide an apparatus for performing the method.
- the object underlying the invention is achieved by a device according to the preamble of claim 14, which is a means for
- the means for determining the crossover frequency detects and processes the alternating voltage dropping across the battery and the current strength of the alternating current flowing through the battery.
- the means for determining the crossover frequency preferably contains further means for determining the phases and
- Figure 1 Typical locus of the impedance of a commercially available battery in a medium state of charge.
- Figure 2 Changes in the imaginary part of the impedance as a function of frequency.
- Figure 3 The correlation between the crossover frequency and the state of charge for a 70 Ah lead-acid battery during discharge at a temperature of -18 ° C.
- Figure 4 An illustration of the impedance parameters as a locus in the complex plane.
- Figure 5 A block diagram of a device for determining the state of charge of a battery with phase comparator without a controllable AC power source in one embodiment.
- FIG. 6 A block diagram of a device for determining the state of charge of a battery with a phase comparator without a controllable AC power source in another embodiment.
- Figure 7 A block diagram of a device for determining the state of charge of a battery with phase comparator and adjustable AC power source.
- Figure 8 A block diagram of a device based on the determination of the impedance for determining the state of charge of a battery without a controllable current source.
- Figure 9 A block diagram of a device based on the determination of the impedance for determining the state of charge of a battery with a controllable current source.
- Figure 1 shows a typical impedance diagram of a commercial battery, which is shown for frequencies between 6000 and 10 "3 Hz as a locus in the complex plane.
- the imaginary part of the impedance is designated as usual with Z "and the real part with Z '.
- Measured values are represented in this, as in the following figures, by dots; the line shown is the regression curve on these measured values.
- the diagram shows a significant inductive behavior of the battery for frequencies above 100 Hz. This corresponds to the range with -Z " ⁇ 0.
- R ⁇ The real part of the intersection of the curve shown with the Z 'axis is denoted by R ⁇ . It corresponds to the internal ohmic resistance of the battery and is made up of the ohmic resistances of the electrolyte, the electrodes and the connections of the battery.
- the value of the parameter R ⁇ allows conclusions to be drawn about the state of charge of a lead accumulator, since a decrease in the sulfuric acid concentration in the electrolyte during the discharge changes the ohmic internal resistance.
- the crossover frequency f + of batteries was considered. This corresponds to the frequency at which the imaginary part Z "of the impedance disappears and thus represents the frequency belonging to the impedance value R ⁇ .
- the crossover frequency f + is, as can also be seen from the further description, an easily accessible parameter of the battery.
- FIG. 3 shows the dependency of the frequency f + on the state of charge of a lead accumulator.
- the state of charge of the The battery is designated SOC and is given in%.
- the percentage values relate to the ratio of the amount of charge present in the battery to the nominal capacity of the battery. This ratio is usually referred to as the state of charge of the battery.
- the nominal capacity of the lead accumulator under consideration was 70 Ah and the results shown in FIG. 3 relate to a discharge process which was carried out at -18 ° C.
- a change in the crossover frequency of 3000 Hz was measured for a complete discharge process at room temperature.
- the parameter f ⁇ can thus serve as a reliable and precise tool for determining the state of charge of a battery.
- Measurements were carried out shortly after interim discharging and charging, during discharging and charging and at temperatures between -18 and 50 ° C.
- the method according to the invention is based on the fact that the inductive behavior of the battery changes into a capacitive behavior at the passage frequency and thus all properties and processes of the battery have an influence on the impedance parameters at the passage frequency.
- the method according to the invention can therefore basically
- Charge determination can be used with all batteries that show sufficient inductive behavior.
- these are batteries with a nominal capacity of at least 1 Ah.
- FIG. 4 shows a graphic representation of the parameters associated with the impedance in the complex plane.
- the impedance can be determined for each frequency f either in polar coordinates by the module
- FIG. 5 shows a block diagram of a device for determining the state of charge of a battery (40).
- the device is connected to a battery (40) which is excited by interference signals which are present in the power network supplied by the battery (40). These fault signals are AC signals, which are caused by existing loads (10) or current sources (20).
- the device includes a sensor (50) for detecting the AC voltage signal of the AC voltage dropping across the battery (40).
- the interference signals generally contain signals of different frequencies.
- the voltage and current signals are each processed in a bandpass filter (80.90), which can only be passed by a harmonic component of the signals that has a frequency that lies within a very narrow frequency band.
- the mean frequency of the frequency band can preferably be set and changed so that the relevant frequency range can be scanned.
- the device also has a phase comparator (100) which determines the phases of the components of the voltage and current signals which have passed the bandpass filters (80, 90) and the phase difference ⁇ (f) between the signal components for those on the bandpass filters ( 80.90) set frequency f is determined.
- a phase comparator 100 which determines the phases of the components of the voltage and current signals which have passed the bandpass filters (80, 90) and the phase difference ⁇ (f) between the signal components for those on the bandpass filters ( 80.90) set frequency f is determined.
- phase difference is transmitted to a control unit (110) which determines the average pass frequency of the
- Bandpass filter (80.90) controls depending on the value of the phase difference.
- the pass frequency of the bandpass filter (80.90) is preferably readjusted until it matches the frequency -E ⁇ at which the phase difference ⁇ (f ⁇ ) determined in the phase comparator (100) disappears.
- the frequency f ⁇ which corresponds to the crossover frequency, • is transmitted to a computing unit (120).
- the device also has a sensor (70) which detects the operating temperature of the battery (40) and sends it to the computing unit (120).
- the sensor (60) for detecting the current strength of the alternating current flowing through the battery (40) also contains a means for detecting the current strength of the direct current flowing through the battery (40), the value of which is transferred to the computing unit (120).
- the assignments between the crossover frequencies and the state of charge of the battery (40) f for different types of batteries, for different operating temperatures and depending on further operating conditions of the battery (40) are stored in the form of functions or tables in the computing unit (120).
- the other operating conditions include the current of the direct current flowing through the battery (40) and information on whether the battery (40) is being discharged or charged.
- the computing unit (120) is preferably able to determine from the current whether the battery (40) is being discharged or charged.
- the functions and tables for assignment are determined in separate measurements and implemented in the form of calculation or assignment instructions in the computing unit (120).
- the measurements for determining the assignment rules can be carried out, for example, during several operating cycles using methods known from the prior art.
- the arithmetic unit (120) determines the state of charge of the battery (40) on the basis of these regulations and the information transmitted to them about the passage frequency, the temperature and the further operating parameters of the battery (40).
- the state of charge is preferably output by the computing unit (120) and can be transmitted to a display device (130) and / or to a system for monitoring the battery parameters (140).
- the embodiment of the device according to the invention shown in FIG. 5 can be used particularly advantageously if the loads (10) and current sources (20) present in the power supply system supply AC signals with sufficient amplitudes in the relevant frequency range.
- resistors are connected to the power network at a known frequency and separated from it.
- Control unit that regulates the switching frequency and, if necessary, also measures the current. Therefore, in a modification of the embodiment of the device according to FIG. 5, it is also possible to use the current signal recorded by the existing control devices directly and to transmit it to the phase comparator (100).
- the current signal typically contains a superposition of harmonic AC signals of different frequencies, so that it has to be filtered by a controllable bandpass filter (90), which in turn is controlled by the control unit (110).
- FIG. 7 shows a block diagram of a device for determining the state of charge of a battery (40) with phase
- This embodiment of the device according to the invention can advantageously be used to determine the state of charge of a battery (40) which is not excited by interference signals.
- the use of a device according to this embodiment is provided if the loads and current sources present in the power network do not deliver signals with sufficient amplitudes in the relevant frequency range.
- the embodiment shown in FIG. 7 initially differs from the embodiment shown in FIG. 5 in that it does not have a bandpass filter (90) for that
- the battery is connected to an additional controllable current source (30) which generates an alternating current of known frequency and phase which excites the battery (40).
- the frequency and phase of the alternating current flowing through the battery (40) can therefore be sent directly from the current source (30) to the phase comparator (100).
- An additional recording is not necessary. However, it can be provided.
- the voltage signal of the alternating voltage dropping across the battery is in turn detected by a corresponding sensor (50) and processed in the bandpass filter (80).
- phase difference between the current and voltage signals determined by the phase comparator (100) is in turn transmitted to the control unit (110).
- the pass frequency of the bandpass filter (80) is preferably readjusted until it reaches the frequency f + matches, at which the determined phase difference ⁇ (f + ) disappears.
- the bandpass filter (80) is in particular controlled in such a way that the average pass frequency corresponds to the frequency that is set at the current source (30).
- the computing unit (120) determines the state of charge of the battery (40) from the frequency f ⁇ which is transferred to it, as shown in connection with FIG. 5.
- FIG. 8 A device without a controllable current source, on which this likewise preferred method is based, is shown in FIG. 8 in the form of a block diagram.
- the device is connected to a battery (40) which is excited by interference signals which are present in the power network supplied by the battery (40). These interference signals are AC signals, which are caused by existing loads (10) or current sources (20).
- This embodiment of the device according to the invention is therefore preferably used for determining the state of charge if the loads (10) and current sources (20) present in the power supply system supply AC signals with sufficient amplitudes in the relevant frequency range.
- the amplitudes, frequencies and phases of these interference signals can, in many cases, be determined on the loads (10) or current sources (20) themselves, as was explained in connection with FIG.
- Control units of the loads (10) and current sources (20) can be designed such that they transmit current signals to the device.
- the device includes a sensor (50) for detecting the AC voltage signal of the AC voltage dropping across the battery (40).
- the voltage signal is processed in a low-pass filter (150), whereby this can only be passed by the portions of the signal that have a frequency in the relevant frequency range.
- the portion of the voltage signal that has passed the low-pass filter is transmitted to a means (160) for Fourier transformation, to which the information about the
- the amplitude, the frequency and the phase position of the current strength of the alternating current signal caused by the loads (10) or sources (20) are transmitted.
- the means (160) for carrying out the Fourier transformation are thus provided with all information for the intended transformation of the signals.
- the means (160) for the Fourier transformation determines the impedance and carries out a Fourier transformation of the impedance or determines the transformed impedance from the transformed current and voltage signals.
- the means for the Fourier transformation preferably carries out a fast Fourier transformation.
- a signal which contains information about the Fourier transform of the impedance is transmitted to an evaluation unit (170) which determines the frequency f + at which the imaginary part of the impedance disappears.
- the two frequency values are preferably chosen such that the imaginary part of the impedance for one frequency is very little less than zero and the imaginary part for the other frequency is very little larger than zero, and the two associated values of the imaginary part of the impedance are connected in a straight line. The zero point of this straight line then corresponds to the passage frequency f ⁇ .
- the crossover frequency, as well as the current intensity of the direct current flowing through the battery (40) and the operating temperature are made available to the computing unit (120).
- the device has sensors (60, 70) which determine the current intensity of the direct current flowing through the battery (40) and the operating temperature of the battery (40). believe it.
- the computing unit (120) again determines the state of charge of the battery (40) as shown in the context of FIG. 5.
- the embodiment of the device according to the invention shown in the block diagram in FIG. 9 is preferably used if the battery (40) is not integrated in a power supply system or if the loads and power sources in the power supply system do not supply signals with sufficient amplitudes in the relevant frequency range.
- the battery (40) is connected to a controllable current source (30) which is controlled by the evaluation unit (170).
- the frequency of the current supplied by the current source is changed by the evaluation unit (170) until the frequency is found at which the imaginary part of the impedance of the battery (40) disappears.
- the frequency and phase of the alternating current supplied by the source (30) are checked by the evaluation unit (110) and the information about frequency, phase and amplitude of the voltage and the current intensity are sent to the means (160) for carrying out the Fourier transformation transmitted, or partially determined by this.
- the device in Figure 9 has the same components as the device in Figure 8 and operates in the same manner.
- configurations of the device according to the invention can also be provided, which contain means for detecting and determining further parameters of the battery which can be determined from the impedance spectrum.
- the determination of the state of charge of the battery using the method according to the invention can be further improved by determining the state of charge using other methods, and the accuracy and reliability of the state of charge determination can be further improved.
- the amplitudes of the alternating voltage dropping across the battery and the current strength of the direct currents flowing through the battery are recorded for the passage frequency f ⁇ .
- the parameter R + can be calculated from the ratio of these amplitudes and used for an additional determination of the state of charge. This can be done in the control unit (110) or in the evaluation unit (170).
- the crossover frequency f ⁇ also depends to a small extent on the aging condition of the battery.
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Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04787016A EP1664814A1 (de) | 2003-09-26 | 2004-09-24 | Verfahren und vorrichtung zur bestimmung des ladezustandes einer batterie |
US10/573,510 US7541814B2 (en) | 2003-09-26 | 2004-09-24 | Method and device for determining the charge of a battery |
JP2006527370A JP4648322B2 (ja) | 2003-09-26 | 2004-09-24 | バッテリーの充電状態の決定方法と決定装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE10345057.2 | 2003-09-26 | ||
DE10345057A DE10345057B4 (de) | 2003-09-26 | 2003-09-26 | Verfahren und Vorrichtung zur Bestimmung des Ladezustandes einer Batterie |
Publications (1)
Publication Number | Publication Date |
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WO2005031380A1 true WO2005031380A1 (de) | 2005-04-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2004/010783 WO2005031380A1 (de) | 2003-09-26 | 2004-09-24 | Verfahren und vorrichtung zur bestimmung des ladezustandes einer batterie |
Country Status (5)
Country | Link |
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US (1) | US7541814B2 (de) |
EP (1) | EP1664814A1 (de) |
JP (1) | JP4648322B2 (de) |
DE (1) | DE10345057B4 (de) |
WO (1) | WO2005031380A1 (de) |
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FR3013459A1 (fr) * | 2013-11-19 | 2015-05-22 | Renault Sa | Methode d'estimation de la valeur d'une caracteristique d'une cellule electrochimique |
CN105589040A (zh) * | 2014-11-07 | 2016-05-18 | 财团法人工业技术研究院 | 基于老化调适电池运作区间的电池调控方法 |
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WO2007141876A1 (ja) * | 2006-06-09 | 2007-12-13 | The Furukawa Electric Co., Ltd. | 電池の劣化状態判定方法,劣化判定装置及び電源システム |
FR2923023B1 (fr) * | 2007-10-30 | 2010-02-05 | Peugeot Citroen Automobiles Sa | Systeme de determination de l'etat de moyens de stockage d'energie electrique |
FR2929410B1 (fr) * | 2008-03-28 | 2010-04-09 | Inst Francais Du Petrole | Methode pour estimer les caracteristiques non mesurables d'un systeme electrochimique |
DE102009000451A1 (de) * | 2009-01-28 | 2010-07-29 | Robert Bosch Gmbh | Verfahren, elektrische Schaltungsanordnung und elektrische Speichereinheit zur Bestimmung einer charakteristischen Zustandsgröße der Speichereinheit |
DE102009009954B4 (de) * | 2009-02-23 | 2021-03-11 | Volkswagen Ag | Verfahren und Vorrichtung zur Ermittlung des Ladungszustandes einer Batterie |
FR2942544B1 (fr) * | 2009-02-24 | 2015-05-15 | Helion | Procede de caracterisation d'un systeme electrique par spectroscopie d'impedance. |
FR2949565B1 (fr) | 2009-09-02 | 2012-12-21 | Inst Francais Du Petrole | Methode amelioree pour estimer les caracteristiques non mesurables d'un systeme electrochimique |
US20130069660A1 (en) | 2010-02-17 | 2013-03-21 | Julien Bernard | Method for in situ battery diagnostic by electrochemical impedance spectroscopy |
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Cited By (8)
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FR2907272A1 (fr) * | 2006-10-13 | 2008-04-18 | Commissariat Energie Atomique | Procede de gestion de la fin de decharge d'une batterie rechargeable |
WO2008046980A2 (fr) * | 2006-10-13 | 2008-04-24 | Commissariat A L'energie Atomique | Procédé de gestion de la fin de décharge d'une batterie rechargeable |
WO2008046980A3 (fr) * | 2006-10-13 | 2008-07-17 | Commissariat Energie Atomique | Procédé de gestion de la fin de décharge d'une batterie rechargeable |
JP2010506556A (ja) * | 2006-10-13 | 2010-02-25 | コミサリア、ア、レネルジ、アトミク−セーエーアー | 充電式バッテリの放電の終点の制御方法 |
US8159190B2 (en) | 2006-10-13 | 2012-04-17 | Commissariat A L'energie Atomique | Method for controlling the end of the discharge of a rechargeable battery |
FR3013459A1 (fr) * | 2013-11-19 | 2015-05-22 | Renault Sa | Methode d'estimation de la valeur d'une caracteristique d'une cellule electrochimique |
WO2015075357A1 (fr) * | 2013-11-19 | 2015-05-28 | Renault S.A.S | Methode d'estimation de la valeur d'une caracteristique d'une cellule electrochimique |
CN105589040A (zh) * | 2014-11-07 | 2016-05-18 | 财团法人工业技术研究院 | 基于老化调适电池运作区间的电池调控方法 |
Also Published As
Publication number | Publication date |
---|---|
DE10345057B4 (de) | 2005-09-15 |
US20070090843A1 (en) | 2007-04-26 |
JP2007506952A (ja) | 2007-03-22 |
US7541814B2 (en) | 2009-06-02 |
JP4648322B2 (ja) | 2011-03-09 |
EP1664814A1 (de) | 2006-06-07 |
DE10345057A1 (de) | 2005-04-28 |
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