CN106997026A - For the method and apparatus for the residual capacitance for determining lead-acid accumulator - Google Patents
For the method and apparatus for the residual capacitance for determining lead-acid accumulator Download PDFInfo
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- CN106997026A CN106997026A CN201710053001.6A CN201710053001A CN106997026A CN 106997026 A CN106997026 A CN 106997026A CN 201710053001 A CN201710053001 A CN 201710053001A CN 106997026 A CN106997026 A CN 106997026A
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
- G01R31/379—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator for lead-acid batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- 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
-
- 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
Abstract
The present invention relates to a kind of apparatus and method for the residual capacitance that battery (2) is determined by measuring the impedance under frequency, it the described method comprises the following steps：A) with known temperature and known time point after last time charge/discharge process (2), prepare the battery (2) with known nominal capacitance, b) impedance value (Z) is measured under an accurate frequency f, c) two assessed values are determined according to an accurate impedance measured (Z), wherein it is determined that imaginary part (Z ") and phase angleAs assessed value, d) according to the comparison of imaginary part (Z ") and at least one reference value, the SOH value of battery (2) is determined, e) according to phase angleWith the comparison of at least one reference value, the SOC value of battery (2) is determined, f) in the case where considering the rated capacitance of battery (2), residual capacitance is determined by the SOH value determined and the SOC value of determination.
Description
Technical field
The present invention relates to a kind of method and apparatus for being used to determine the residual capacitance of lead-acid accumulator.
Background technology
Understanding to the quantity of state of battery is extremely important, such as to determine operation reserve and/or its replacing, because
This illustrates or defined first some battery characteristic quantities.
The capacitance of battery is related to temperature and with ampere [Ah] for unit explanation.Capacitance is by using determination
Electric current I20The power-off standard that=rated capacitance/20 [A] are discharged to U=10.5V is determined (see DIN EN 50342-1).Hereafter
Defined in：
Rated capacitance K20：Expression manufacturer is providing, nominal capacitance.It is previously stored institute in new battery
The minimum capacitance (unit [Ah]) contained, and be in temperatureWhen determination electric current I20Discharge 20
Hour to U=10.5V power-off standard in the case of the capacitance that can provide.
Actual capacitance KIST：RepresentWhen maximum electric capacity in the current ageing state of battery
Measure (unit [Ah]).
Residual capacitance KREST：Residual capacitance is representedWhen in current electric charge and ageing state (fortune
Row state) in the capacitance (unit [Ah]) that has.Residual capacitance KRESTLess than or equal to actual capacitance.
The state of charge (SOC, State-of-Charge) of battery is defined as follows：
The health status (SOH, State-of-Health) of battery is defined as：
SOC maximums can be 100%, because KISTMaximum capacitance is represented, wherein, SOH value can be>100%, because
For the capacitance K of the maximum possible of new batteryISTExceed the rated capacitance K provided by manufacturer mostly20。
Determine that residual capacitance must known SOC and SOH in order to not discharge.
KREST=SOCSOHK20
The aging effect of lead-acid accumulator forms irreversible damage, and it has negative effect to component function and SOH.Activity
The loss of material for example causes the actual capacitance of battery smaller and thus causes the energy that can be stored in battery more
It is few.The loss of actual capacitance causes by the repeated loading of battery and by corrosion.Particularly by battery especially in high temperature
In the case of the long period be in relatively low charged state accelerated corrosion.Consequence by circulation or corrosion and ageing is, for example, positive electrode
Conductive grids connection sheet fracture and surface sulfation, active material come off.Low cost, quick and reliable determination
Battery current residual capacitance for industry and consumer field in use it is significant, especially when battery must be only
When security system for facility or vehicle in emergency is powered.If battery does not undertake other functions, it is current
The inspection of capacity is due to bearing missing, the not evaluable history of loading condition and still very insecure so far or consumption
When it is expensive.
A kind of method for being used to monitor the running status of electrochemical appliance as known to the A1 of patent document DE 102 20 172,
Wherein, impedance is measured by the measurement apparatus on the joint of electrochemical appliance, wherein, according to the resistance of measurement in analytical equipment
The size of anti-imaginary part monitors the running status of electrochemical appliance.Herein preferably, measured in the case of at least two frequencies
Impedance.The vector locus figure of electrochemical appliance can be recorded by measuring impedance in the case of at least two frequencies
(Ortskurve), this illustrates the curve for characterizing each running status.By evaluating the vector locus figure in the case of different frequency
Impedance can just estimate the running status of electrochemical appliance.Herein preferably, in following position analyses or pricing vector rail
Mark figure, i.e., vector locus figure is changed in the way of characterizing each running status on the position.
A kind of ageing state for being used to determine secondary battery unit as known to the A1 of patent document DE 10 2,009 000 337
Method, the method comprising the steps of：
A) secondary battery unit is prepared,
B) impedance spectrum is recorded,
C) assessed value is determined according to the impedance spectrum of measurement,
D) ageing state of secondary battery unit is determined according to the comparison of assessed value and reference value, by for secondary battery unit
Result be transferred on whole battery, wherein, the difference of the ageing state of each battery is not considered.
Here, assessed value A is determined by recording at least two impedances or impedance spectrum.Herein preferably, assessed value be
Impedance (the unit of measurement in the case of the low frequency of determination：Ohm), reference quantity is with the real number that unit is ohm.Here, making
For low frequency can be all≤10Hz, preferably≤1Hz frequency.The frequency of scope especially preferably from 0.1Hz to 0.3Hz
Rate.Here, illustrating the application of the principle to all conventional battery technologies in the publication.
But drawn in actual experiment, determine that SOH will not be expired to lead-acid accumulator with the method and step of suggestion
The result of meaning.Herein it should be noted that not providing SOH as knot as the method described in the A1 of patent document DE 10 2,009 000 337
Really, because SOH is defined as
Specifically, what is obtained is the residual life (unit depending on state of charge (SOC) and temperature：
My god).
A kind of side for being used to determine the residual capacitance of secondary battery unit as known to the T2 of patent document DE 692 29 805
Method.At least two impedances of battery are measured herein, wherein, the different frequency in the approximate range from 0.001 to 1.0Hz is surveyed
Measure each impedance.Here, the slope substantially by detecting the straight line that the imaginary part of impedance is determined as the function of the real part of impedance.
The residual capacitance of battery determined by the comparison of the slope of determination and the standard curve of slope as the function of residual capacitance,
Wherein, standard curve is by having each battery of the battery of the known electric capacity of different residual capacitance values at least two
At least two impedances are measured at different frequencies to measure.Here, frequency is in 0.001 to 1.0Hz scope.
A kind of SOH value for being used to determine nickel metal hydride batteries as known to the A1 of patent document US 2003/0074335
Method, wherein, detect at least one impedance value and by fuzzy system be impedance value distribute SOH value.
A kind of method for being used to determine the SOC value of battery known to the A of patent document US 2,984,762, wherein being this
Analyze the phase angle of the impedance of battery.
The content of the invention
Therefore, the technical problem to be solved in the present invention be there is provided it is a kind of it is easy, reliable and inexpensive, be used for
The method for determining the residual capacitance of lead-acid accumulator, and provide a kind of suitable device for this.
The technical problem by measuring the impedance under frequency determines lead-acid accumulator according to the present invention by a kind of
Residual capacitance method solve, wherein, residual capacitance be in current state of charge and ageing state with reference to temperature
Capacitance under degree, the described method comprises the following steps：
A) with known temperature and known time point after last time charge/discharge process, prepare known to having
The lead-acid accumulator of rated capacitance,
B) impedance value is measured under an accurate frequency f,
C) the accurate impedance measured according to one determines two assessed values, wherein it is determined that imaginary part and phase angle are as commenting
Valuation,
D) according to the comparison of imaginary part and at least one reference value, the SOH value of lead-acid accumulator is determined,
E) according to the comparison of phase angle and at least one reference value, the SOC value of lead-acid accumulator is determined,
F) in the case where considering the rated capacitance of lead-acid accumulator, determined by the SOH value determined and the SOC value of determination
Residual capacitance.
The technical problem also passes through a kind of device for being used to determine the residual capacitance of lead-acid accumulator according to the present invention
Solve, wherein, residual capacitance is the capacitance under reference temperature, the dress in current state of charge and ageing state
Put single including alternating-current voltage source or ac current source, the device for measuring voltage and current with phase with being consistent and analysis
Member, wherein, the analytic unit is designed as measuring impedance by voltage and current and thereby determines that imaginary part and phase angle as commenting
Valuation, and determine SOH value, SOC value and lead-acid accumulator by the way that assessed value is compared with least one reference value respectively
Residual capacitance.
For determining that the method for residual capacitance includes method and step：With after last time charge/discharge process
The temperature known and known time point, the lead-acid accumulator with known nominal capacitance is prepared, and in an accurate frequency
Impedance value is measured under rate f.The imaginary part of impedance is determined as assessed value by the impedance measured, wherein, according to assessed value and at least one
The comparison of individual reference value determines the SOH value of battery.Herein using experiment it has been shown that the especially reality of the impedance of lead-acid accumulator
Portion associatedly non-linearly changes with SOH value and is therefore difficult to analyze in e measurement technology.This causes even in the total resistance of analysis
Difference is reduced when anti-due to the real part not being easily distinguishable.According to the present invention, made a distinction in extremely definite imaginary part, this leads
Cause is regularly significantly improved really in SOH value.Preferably, the comparison with multiple reference values is carried out, so as to true as accurately as possible
Determine SOH value.Here, reference value is determined and stored according to experiment and is summarised for defining SOH scopes.Therefore, when different from
When considering only one value, such as SOC=100% above, term SOH value or SOC value are also comprising scope, a such as SOC=
60-70%.If such as imaginary part Z " is located between two reference values, SOH scopes are distributed for it.Herein it should be noted that with for
Determine to record reference value under the conditions of the imaginary part of the SOH scopes of test specimen is corresponding.Therefore, impedance and its imaginary part are for example depending on temperature
Time and frequency after degree, battery last time charge/discharge.Here, frequency can simply keep constant.According to this
The determination SOH of invention method be proved it is unrelated with SOC in preferred f ＜ 10Hz frequency range, so as to mainly consider
It is the time after temperature and last time charge/discharge.This can also be carried out by correction term.Preferably, with reference member
Test specimen is measured at a temperature of identical.In addition, the measurement of test specimen and reference member is carried out preferably in the resting state of battery, just
It is to say at least 0.5 hour, preferably 0.5 to 12 hour after last time charge/discharge.The resting state of lead-acid accumulator is determined
Justice is to occur without within least 0.5 hour after charge/discharge process due to the acid concentration in the electrodes and in free electrolyte
Significant diffusion process caused by poor.
In order to determine the SOC of battery, the phase angle of the impedance of measurement is determined under identical frequencyIt is used as other assessment
Value and compared with least one reference value and distribute SOC value.It is also suitable herein, there is preferably multiple reference values,
Distribute SOC scopes respectively for reference value.
Just residual capacitance can be determined by the SOH value and SOC value thereby determined that when considering known rated capacitance
Amount.The advantage of this method is, it is not necessary to provides the current source or voltage source of changeable frequency and does not also need to determine slope or arrow
Measure trajectory diagram.This had both simplified construction and also simplify calculating consuming.Therefore, this method or device even can be in a motor vehicle
It is vehicle-mounted to use, to determine the residual capacitance of battery.
In embodiment as previous step be by the imaginary part of impedance it is determined that frequency f under compared with threshold value.If negative
Imaginary part be less than threshold value, then SOC is about 100%.In preferred frequency f=10mHz, be about for lead-acid accumulator threshold value "-
0.14mΩ”.If it is determined that frequency when being chosen less than f=10mHz, it is determined that smaller threshold value.If being not less than threshold on the contrary
Value, then then by analyzing phase angleDetermine SOC.
Frequency f is less than 10Hz in embodiments, because the difference higher than the frequency in imaginary part is also very little.
Here, it is shown that the difference in imaginary part is reduced and become apparent from frequency.But time of measuring is correspondingly increased.Cause
This in embodiments frequency elect as less than 50mHz and more than 0.1mHz, particularly preferred 10mHz.
Therefore, described device includes alternating-current voltage source or ac current source, it can apply whereby on lead-acid accumulator
Voltage or electric current, wherein, preferably apply electric current.Here, alternating voltage or alternating current are preferably sinusoid.The dress
The device and analytic unit for also including being used to measure voltage and current with phase with being consistent are put, wherein, the analytic unit is set
It is calculated as measuring impedance by voltage and current and thereby determines that imaginary part and phase angle as assessed value.In addition, analytic unit is also set
It is calculated as, SOH value and SOC value is determined by the way that assessed value is compared with least one reference value respectively.Then analytic unit by
SOH value and SOC value and rated capacitance determine the residual capacitance of battery.
Brief description of the drawings
The present invention is expanded on further below according to preferred embodiment.In the accompanying drawings：
Fig. 1 shows the schematic block diagram of the impedance for determining lead-acid accumulator,
Fig. 2 shows the use circuit diagram of lead-acid accumulator,
Fig. 3 shows the exemplary graph (nyquist diagram) of the impedance of lead-acid accumulator,
Fig. 4 shows the curve map of the real part relative frequency for different SOH value or actual capacitance,
Fig. 5 shows the curve map of the imaginary part relative frequency for different SOH value or actual capacitance,
Fig. 6 shows the phase angle for different SOC valuesThe curve map of relative frequency.
Embodiment
The side of the device with alternating-current voltage source 3 of impedance for determining lead-acid accumulator 2 is simplifiedly shown in Fig. 1
Block diagram, alternating-current voltage source produces the alternating voltage with frequency f.Here, alternating-current voltage source 3 is in series with ammeter A, stored with plumbic acid
Battery 2 is parallel with voltage meter, electric current and voltage that ammeter and voltage meter detection are consistent with phase, so as to thus in analytic unit
Impedance is determined in 4.Alternatively, power supply can also be configured to ac current source.Analytic unit 4 can just be determined as described below
SOH and SOC and thus determine lead-acid accumulator 2 residual capacitance.
Figure 2 illustrates the conventional schematic diagram of lead-acid accumulator 2, hereafter its element is discussed briefly.Lead-acid accumulator
Internal resistance RiIt is made up of following part：Electrode, pole bridge, (when multiple batteries are in series or in parallel) battery connecting piece, electricity
Pole grid, active material and electrolyte, wherein, which constitute the best part.Due to corrosiveness, the loss of active material,
Micro-structural changes with time and the change of concentration of electrolyte and temperature causes the increase of internal resistance.
For battery, inductance effect is appeared on wiring, electrode connecting parts and the ground structure of connecting line and connecting line,
This is represented by inductance L.
In lead-acid accumulator, start to store energy in the electrolytic solution.When accessing overvoltage, by electric current so that carrier
Concentration distribution change due to the potential shift in electric double layer.During in order to reach that new, stable state needs certain
Between.The modeling of this physical phenomenon is realized by electric capacity C, is referred to as C for " electric double layer (double layer) " hereindl.Herein
To the state in electric double layer, the carrier that must equally will appear from passing through and exist afterwards from solid electrode to liquid electrolyte
Electric charge transfer in electric double layer is modeled as to the counteractive resistance of carrier.This can pass through electric double layer capacitance CdlParallel connection electricity
Hinder RctRealize.Subscript " ct " expression " electric charge transfer (charge transfer) ".
With parallel resistance RDElectric capacity CDModeled for diffusion process.When electrode reaction is suppressed due to lacking reactant
When, diffusion process is exactly important.This for example appears in each battery charging and terminated, and on a small quantity may be used when only having at the electrode surface
The PbSO of conversion4When so that charging current is determined by relatively low diffusivity of the lead ion into electric double layer and filled in increase
Hardly raised during piezoelectric voltage.
Figure 3 illustrates impedance Z=Z'+jZ " of lead-acid accumulator exemplary curve, it can here be seen that negative Z "
Value record is in Y-axis.Record has each major part of the circuit diagram according to Fig. 2 herein.Here, Z' is the real part of impedance, Z " is
The imaginary part of impedance.If drawing datum line by impedance value, the angle between datum line and X-axis is phase angle
Figure 4 illustrates the real part Z' on frequency of the battery of different degrees of aging in resting state, wherein, temperature
Spend and SOC is identical (T=20 DEG C, SOC=40%) respectively.See herein, curve in the range of more than 1000Hz only
There is small difference.From 1000Hz to about 0.1Hz, the battery K of maximum is only cyclizedIST=22.15Ah can other relative electric power storages
Distinguish in pond.In the case where frequency is less than 0.1Hz, curve ratio is relatively significantly separated from each other, wherein, maximum difference is in f=
During 10mHz.But this can be seen that, in 10mHz, actual capacitance non-linearly reduces with the increase of real part.
Figure 5 illustrates the measurement result of identical battery, wherein, it is shown in which the negative imaginary part Z " on frequency f.
It can be seen in the drawing that until about 10Hz frequency imaginary part can not all provide the difference of actual capacitance.From less than
10Hz frequency rises, and curve substantially has the difference bigger than Fig. 4.When maximum difference is equally present in 10mHz.It can see herein
Go out, actual capacitance also reduces in the case that imaginary part reduces.In this case in the order in approximately linear.
This is used for determining SOH value according to the present invention herein, and method is the scope correspondence SOH value scope of imaginary part Z " value.
The influence of measurement exceptional value is excluded by using sufficiently large scope.Here, assessed value (imaginary part Z ") between reference value
In the resting state of battery it is determined that frequency (such as 10mHz) and identical temperature conditions under be compared.
Preferably, analyzed in analytic unit, determined in analytic unit by electric current and magnitude of voltage and compare imaginary part
Z ", wherein, reference value is stored in corresponding memory.Then the SOH value of determination can be shown and storage is being changed if necessary
Suggestion is provided during battery.In addition, the SOH value determined can import other control devices, such as battery management system.
Figure 6 illustrates the phase angle on frequency f (unit Hz)Wherein, with logarithm recording frequency f.Record has herein
Different phase angular curves for different SOC values.The SOC value determined from experiment can derive reference value, and reference value is same
Sample figure 6 illustrates.Thus, for examplePhase angular region correspondence 100% SOC value,'s
Phase angle corresponds to the SOC scopes from 80% to 100%,Phase angle correspondence from 60% to 80% SOC
Scope, Phase angle correspondence from 40% to 60% SOC value,Phase angle correspondence 40%
SOC value.Herein it can be stated that only distribution causes the SOC scopes of the range information for residual capacitance.But can also be
Each phase angle distribution SOC value in scope.For example, phase angle80 ° of SOC value is distributed, is phase anglePoint
It is phase angle with 70 ° of SOC value60 ° of SOC value is distributed, wherein, linearly interpolation median.It is noted here that, press
Empirically determined reference value must only it is determined that frequency f (such as 10mHz) under determine.Imaginary part Z " can in advance with threshold value S ratios
Compared with, wherein, SOC is defined as 100% when less than threshold value S, and pass through the phase angle according to Fig. 6 when more than threshold valueWith
The comparison of reference value is carried out.
Claims (8)
1. a kind of method for the residual capacitance that lead-acid accumulator (2) is determined by measuring the impedance under frequency, wherein, remain
Remaining capacitance is the capacitance under reference temperature in current state of charge and ageing state, and methods described includes following step
Suddenly：
A) with known temperature and known time point after last time charge/discharge process (2), preparing has known volume
Determine the lead-acid accumulator (2) of capacitance,
B) impedance value (Z) is measured under an accurate frequency f,
C) two assessed values are determined according to an accurate impedance measured (Z), wherein it is determined that imaginary part (Z ") and phase angleMake
For assessed value,
D) according to the comparison of imaginary part (Z ") and at least one reference value, the SOH value of lead-acid accumulator (2) is determined,
E) according to phase angleWith the comparison of at least one reference value, the SOC value of lead-acid accumulator (2) is determined,
F) in the case where considering the rated capacitance of lead-acid accumulator (2), determined by the SOH value determined and the SOC value of determination
Residual capacitance.
2. in accordance with the method for claim 1, it is characterised in that the imaginary part (Z ") of the impedance (Z) is compared with threshold value (S),
Wherein, SOC is defined as 100% when less than the threshold value (S), the phase angle is passed through when more than the threshold value (S)
SOC is relatively determined with least one reference value.
3. according to the method described in claim 1 or 2, it is characterised in that the frequency f is chosen less than 10Hz.
4. in accordance with the method for claim 3, it is characterised in that the frequency is less than 50mHz and more than 1mHz.
5. one kind is used for the device (1) for determining the residual capacitance of lead-acid accumulator (2), wherein, residual capacitance is current
State of charge and ageing state in capacitance under reference temperature, described device includes alternating-current voltage source or alternating current
Source (3), device and analytic unit (4) for measuring voltage and current with phase with being consistent, wherein, the analytic unit
(4) it is designed as measuring impedance by voltage and current and thereby determines that imaginary part (Z ") and phase angle as assessed value, and passes through
Assessed value is compared with least one reference value respectively and determines the residual capacitance of SOH value, SOC value and lead-acid accumulator.
6. according to the device described in claim 5, it is characterised in that the analytic unit (4) is designed as impedance (Z) imaginary part
(Z ") compared with threshold value (S), wherein, SOC is defined as 100% when less than the threshold value (S), and more than the threshold
Pass through phase angle during value (S)SOC is relatively determined with least one reference value.
7. according to the device described in claim 5 or 6, it is characterised in that the frequency of the voltage source or current source (3) is less than
10Hz。
8. according to the device described in claim 7, it is characterised in that the frequency of the voltage source or current source (3) is less than
50mHz and more than 1mHz.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016201026.3A DE102016201026B4 (en) | 2016-01-25 | 2016-01-25 | Method and device for determining a residual capacity of a lead-acid battery |
| DE102016201026.3 | 2016-01-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106997026A true CN106997026A (en) | 2017-08-01 |
| CN106997026B CN106997026B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710053001.6A Active CN106997026B (en) | 2016-01-25 | 2017-01-22 | Method and device for determining the residual capacity of a lead-acid battery |
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| CN (1) | CN106997026B (en) |
| DE (1) | DE102016201026B4 (en) |
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| CN111381168A (en) * | 2018-12-26 | 2020-07-07 | 丰田自动车株式会社 | Battery characteristic evaluation device and battery characteristic evaluation method |
| CN113167838A (en) * | 2018-11-26 | 2021-07-23 | 罗伯特·博世有限公司 | Method and device for assessing the state of health of a replaceable battery |
| US11662389B2 (en) | 2020-07-24 | 2023-05-30 | Analog Devices International Unlimited Company | Tracking state of charge of a non-rechargeable battery using impedance spectroscopy |
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| CN111273185B (en) * | 2018-11-16 | 2023-10-03 | 宇通客车股份有限公司 | SOH estimation method and device for power battery system of electric automobile |
| DE102019109622A1 (en) | 2019-04-11 | 2020-10-15 | Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Energie, Dieses Vertreten Durch Den Präsidenten Der Physikalisch-Technischen Bundesanstalt | Method for determining an aging parameter, a state of charge parameter and a temperature of an accumulator, in particular a lithium accumulator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106997026B (en) | 2020-04-10 |
| DE102016201026A1 (en) | 2017-07-27 |
| DE102016201026B4 (en) | 2019-03-21 |
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