[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

NL2003923C2 - Method and device for testing an electric energy storage component. - Google Patents

Method and device for testing an electric energy storage component. Download PDF

Info

Publication number
NL2003923C2
NL2003923C2 NL2003923A NL2003923A NL2003923C2 NL 2003923 C2 NL2003923 C2 NL 2003923C2 NL 2003923 A NL2003923 A NL 2003923A NL 2003923 A NL2003923 A NL 2003923A NL 2003923 C2 NL2003923 C2 NL 2003923C2
Authority
NL
Netherlands
Prior art keywords
component
steps
energy storage
components
battery
Prior art date
Application number
NL2003923A
Other languages
Dutch (nl)
Inventor
Egbert Wouter Joghum Robers
Original Assignee
Epyon B V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Epyon B V filed Critical Epyon B V
Priority to NL2003923A priority Critical patent/NL2003923C2/en
Priority to PCT/NL2010/050820 priority patent/WO2011071375A1/en
Application granted granted Critical
Publication of NL2003923C2 publication Critical patent/NL2003923C2/en

Links

Classifications

    • 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
    • H01M10/4285—Testing apparatus
    • 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]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

Method and device for testing an electric energy storage component
The present invention relates to a method and device for testing an electric energy storage component.
5
Testing electric energy storage devices can be done for various reasons. One goal may be to determine the actual state of charge of the component, to find out if a charging operation is finished, another may be to determine the amount of energy present in the component, to estimate for example the time a device provided with the component can 10 be used.
Yet another purpose may be to estimate the lifetime of the component, that is, the number of times it can be charged and discharged before it reaches the end of its lifetime and needs to be replaced or repaired. Ability to estimate the lifetime of a component, is 15 of importance when designing electric apparatus, especially electric vehicles. Purchasers need to be informed how often they can recharge their vehicle, and how often maintenance or replacement is to be foreseen. Furthermore, the choice between various components may be based on the outcome of comparison tests between several components.
20
Methods according to the state of the art however have not proven to adequately and reliably predict the behaviour or lifetime of a component, or they do not offer decent ways for comparing the results of tests of various components, making it difficult to select the best component for a specific application, or to estimate the state of a 25 component that is already in use.
It is a goal of the present invention to provide a method and device for testing electric energy storage component that overcomes the above mentioned disadvantages, or at least to provide a useful alternative.
The invention thereto comprises a method for testing an electric energy storage component, such as a battery or a (super) capacitor, comprising the steps of A) charging the component with a first amount of energy, B) discharging the storage component until 30 2 a threshold or limit state of charge or voltage is reached and C) monitoring the respective voltage increase and/or decrease over the component during subsequent repetition of steps A and B, or the amount of charge reproduced by the component. For a capacitor or a like component, the method according to the invention is based on the 5 fact that the capacity (coulomb per volt) decreases during deterioration of the component. For batteries, other calculation methods or models may be used.
As a result, the voltage increase for a (predetermined) amount of energy (or a predetermined amount of charge / coulomb) increases during deterioration. Instead of 10 measuring an amount of time it takes to charge or discharge the component for a certain percentage as is used according to the art, according to the present invention, a value that is directly related to the deterioration is measured. This makes the outcome of the measurement more reliable and better reproducible.
15 The amount of energy during charging and discharging may be different, so that the voltage over the component increases or decreases during the measurements, but preferably it is the same. However, the component may be predetermined with a bias voltage upfront, and it does not necessarily be charged up to its maximum value. Furthermore, the waveform and length of a current when charging or discharging the 20 component may be different, and vary in time.
In general, a (predetermined) amount of energy may be calculated by integrating voltage times current over time. The amount of charge can be calculated by integrating current over time, wherein charge and energy may be exchanged as indicators. In case the charge 25 is used as an indicator, the voltage over the (normally relative small) internal resistance of the capacitor or battery is in fact neglected.
In order to quantify the behaviour of the component, the method according to the invention may further comprise the step of D) counting the number of repetitions of 30 steps A and B it takes before the voltage increase and/or decrease over the component exceeds a predetermined threshold value during step A and/or B. This number is an indication of the speed of deterioration and the number of charging cycles the component 3 can withstand before it breaks down or becomes useless, and can be used to qualify components to facilitate comparison.
Step A or step B may further comprise (dis)charging the component with a 5 predetermined current value. This results in a predetermined - for example linear - de/increase of the voltage over the component, which makes the measurements easy. As an alternative, or at the same time, (dis)charging the component during a predetermined time is an option, resulting in a predetermined time wherein the voltage (de)/increases.
10 In order to make a more realistic and thus more valuable simulation, the method may comprise the step of pausing during a predetermined time between steps A and B. Charging and discharging will in most circumstances take place quicker than in a real life situation, since only limited time resources are available for the testing.
15 In an advantageous embodiment, the method according to the invention comprises composing a number of graphs of voltage increase and/or decrease over the component during subsequent repetition of steps A and B for a variety of components. Since the components deteriorate by the testing process, and even may be destructed thereby, preferably, only a few cycles are performed on the actual component, and the results of 20 these tests are matched with the graphs, for estimation of the behaviour of the component. The graphs may be composed for various values of lifetime, weight, price, mass of a plurality of components, number of cycles, or energy quantity in order to be able to compare a large variety of components.
25 The graphs may be partly made by interpolation of measurements, and can for example be repeated for various percentages of charging and discharging of the component, wherein different percentages belong to different tests. For example the component can be charged and discharged between 0 and 100%, or between 20 and 80%. The latter has positive effect on the lifetime and the number of charging and discharging cycles it can 30 withstand.
4
Afterwards, each of the components from the plurality of components may be qualified with a rating. For a component to be tested, steps A and B may be performed only a few times, and the results can then be mapped with the graph for rating the component.
5 The ratings and tests can be performed for determining if a component is suitable for a specific purpose, such as use in an electric vehicle, and a testing device, configured to perform the method according to the invention can be used for that purpose. Such testing device may for example be a programmable current source. In a further embodiment, such a testing device may be incorporated in the component, so that self 10 tests can be performed at predetermined instances, or on demand, by a user of the component. An electric device, such as an electric vehicle, may also comprise an electronic energy storage device, wherein the testing device is provided with indicator means, for indicating a status of the energy storage component or for warning purposes.
15 The invention will now be explained in more detail with reference to the figures.
Figure 1 shows a schematic detailed view of the charging and discharging steps A, B. Figure 2 shows a graph with graphs, composed by testing a number of components.
20 Figure 1 shows a schematic detailed view 1 of the charging and discharging steps A, B during time t. During the steps A of charging the component with a first amount of energy the voltage Y over the component increases, and during steps B of discharging the storage component with a second amount of energy the voltage V decreases. During step C of monitoring the respective voltage increase and/or decrease over the component 25 during subsequent repetition of steps A and B, a graph Vc with maximum values of the voltage may be composed. Step D of the method according to the invention is also shown, counting the number of repetitions of steps A and B it takes before the voltage increase and/or decrease over the component exceeds a predetermined threshold value Vt during step A and/or B. The increasing voltage increase per predetermined amount of 30 energy is a result of a declining capacity of the energy storage component.
Figure 2 shows a graph with a plurality of graphs thus obtained. The points are measurements here, wherein for multiple measurements with the same type of energy 5 storage component, different amounts of energy are used, for example 80%, 70%, 60% or 50% of the full capacity. Capacity is well defined for a capacitor, but for a battery the term is used to indicate the amount of energy that can be stored. In fact, this is an amount of charge. The horizontal axis shows the number of cycles, and it is possible to 5 determine the number of cycles it takes before a threshold voltage is reached. This number can be used as a qualification number for a specific type of energy storage component, in order to be able to compare it with other energy storage components. Here it is also possible to compare for example batteries with capacitors.
10 The vertical axis shows a normalised volume of the battery, that is, the volume the battery should have if it would have to deliver 1 kWh. This way, the graph can be used with another starting point, for example if a battery with 200 cycles is required for a specific purpose, battery 5 will be the largest battery for the specific purpose (9 litre/kWh), and battery 1 will be the smallest with 5,3 litre/kWh. If desired, according to 15 the invention, a like graph could be made with a mass or a price on the vertical axis.
The invention may further be embodies as a battery charger, in particular for charging vehicle batteries, and thereto be adapted to interact with a motor management system of a vehicle, for using at least part of data acquired by the motor management system for 20 testing an energy storage device of the vehicle. The charging device may be integrated in the vehicle, but it may also be integrated in a charging station for vehicle batteries.

Claims (16)

1. Werkwijze voor het testen van een elektrische energie-opslagcomponent, zoals een accu of een super-condensator, omvattende:A method for testing an electrical energy storage component, such as a battery or a super-capacitor, comprising: 2. Werkwijze volgens conclusie 1, omvattende: Dl. Het tellen van het aantal herhalingen van de stappen A en B die het duurt voordat de spanningstoe- en/of afname over de component een voorafbepaalde drempelwaarde overschrijdt gedurende stap A en/of B, of voordat de component kapot gaat of stopt.The method of claim 1, comprising: Dl. Counting the number of repetitions of steps A and B that it takes for the voltage increase and / or decrease over the component to exceed a predetermined threshold value during steps A and / or B, or before the component breaks or stops. 3. Werkwijze voor het testen van een elektrische energie-opslagcomponent, zoals een accu of een super-condensator, omvattende: A. Het laden van de component met een eerste hoeveelheid lading; B. Het ontladen van de component totdat een bepaalde (spannings)drempel bereikt is; C. Het bewaken van de ladingstoe- en/of afname over de component gedurende 20 opvolgende herhaling van stappen A en B.A method for testing an electrical energy storage component, such as a battery or a super-capacitor, comprising: A. Charging the component with a first amount of charge; B. Discharging the component until a certain (voltage) threshold is reached; C. Monitoring the charge increase and / or decrease over the component for 20 consecutive repetitions of steps A and B. 4. Werkwijze volgens conclusie 3, omvattende: D2. Het tellen van het aantal herhalingen van de stappen A en B die het duurt voordat de ladingsafhame over de component gedurende stap C een voorafbepaalde drempelwaarde 25 overschrijdt.The method of claim 3, comprising: D2. Counting the number of repetitions of steps A and B that it takes for the charge drop across the component during step C to exceed a predetermined threshold value. 5. Werkwijze volgens conclusie 1 of 2, waarbij stap A of B omvat: - Het ontladen van de component met een voorafbepaalde spannings of vermogenswaarde. 30The method according to claim 1 or 2, wherein step A or B comprises: - Discharging the component with a predetermined voltage or power value. 30 5 A. Het laden van de component met een eerste hoeveelheid energie; B. Het ontladen van de component met een tweede hoeveelheid energie; C. Het bewaken van de spannings toe- en/of afname over de component gedurende opvolgende herhaling van stappen A en B.A. Loading the component with a first amount of energy; B. Discharging the component with a second amount of energy; C. Monitoring the voltage increase and / or decrease over the component during subsequent repetition of steps A and B. 6. Werkwijze volgens één van de voorgaande conclusies, waarbij stap A of stap B omvat: - (ont)laden van de component gedurende een voorafbepaalde tijd.Method according to one of the preceding claims, wherein step A or step B comprises: - (un) loading of the component for a predetermined time. 7. Werkwijze volgens één van de voorgaande conclusies, omvattende: - het doen verlopen van een voorafbepaalde tijd tussen de stappen A en B.Method according to one of the preceding claims, comprising: - causing a predetermined time to elapse between steps A and B. 8. Werkwijze volgens één van de voorgaande conclusies, omvattende: 5. het opstellen van een aantal grafieken van spannings toe- of afname over de component gedurende opvolgende herhaling van de stappen A en B voor een verscheidenheid aan componenten.A method according to any one of the preceding claims, comprising: 5. preparing a plurality of graphs of voltage increase or decrease over the component during subsequent repetition of steps A and B for a variety of components. 9. Werkwijze volgens conclusie 8, omvattende een aantal grafieken voor verschillende 10 levensduren, aantallen cycli, energiehoeveelheid, gewicht, prijs, massa van een aantal componenten.9. Method as claimed in claim 8, comprising a number of graphs for different lifetimes, number of cycles, energy quantity, weight, price, mass of a number of components. 10. Werkwijze volgens conclusie 9, omvattende het aan elk van de componenten van de verscheidenheid aan componenten toekennen van een beoordeling. 15The method of claim 9, comprising assigning an assessment to each of the components of the variety of components. 15 11. Werkwijze volgens conclusie 8 of 9, omvattende: - het een aantal keer uitvoeren van de stappen A en B voor een component, en het afbeelden van de resultaten op de grafiek, voor het beoordelen van de component.Method according to claim 8 or 9, comprising: - performing steps A and B for a component a number of times, and displaying the results on the graph, for evaluating the component. 12. Testinrichting voor een elektrische energieopslagelement, ingericht voor het uitvoeren van de werkwijze volgens één van de conclusies 1-11.12. Test device for an electrical energy storage element, arranged for carrying out the method according to one of claims 1-11. 13. Energieopslaginrichting, omvattende een testinrichting volgens conclusie 12.An energy storage device comprising a test device according to claim 12. 14. Elektrische inrichting, zoals een elektrich voortuig, omvattende een elektronische energieopslaginrichting volgens conclusie 11, waarbij de testinrichting voorzien is van meetmiddelen, voor het meten van een status van de energieopslaginrichting.An electrical device, such as an electric vehicle, comprising an electronic energy storage device according to claim 11, wherein the test device is provided with measuring means for measuring a status of the energy storage device. 15. Acculader, in het bijzonder voor het laden van voertuigaccu’s, omvattende een 30 testinrichting volgens conclusie 12. 515. Battery charger, in particular for charging vehicle batteries, comprising a test device according to claim 12. 5 16. Acculader volgens conclusie 15, ingericht om samen te werken met een motor- of batterijmanagementsysteem van een voertuig, voor het gebruiken van ten minste een deel van de gegevens verzameld door het motormanagementsysteem van het voertuig.A battery charger according to claim 15, adapted to cooperate with an engine or battery management system of a vehicle, for using at least a portion of the data collected by the vehicle's engine management system.
NL2003923A 2009-12-08 2009-12-08 Method and device for testing an electric energy storage component. NL2003923C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2003923A NL2003923C2 (en) 2009-12-08 2009-12-08 Method and device for testing an electric energy storage component.
PCT/NL2010/050820 WO2011071375A1 (en) 2009-12-08 2010-12-03 Method and device for testing an electric energy storage component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2003923A NL2003923C2 (en) 2009-12-08 2009-12-08 Method and device for testing an electric energy storage component.
NL2003923 2009-12-08

Publications (1)

Publication Number Publication Date
NL2003923C2 true NL2003923C2 (en) 2011-06-09

Family

ID=42224490

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2003923A NL2003923C2 (en) 2009-12-08 2009-12-08 Method and device for testing an electric energy storage component.

Country Status (2)

Country Link
NL (1) NL2003923C2 (en)
WO (1) WO2011071375A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711016A2 (en) * 1994-11-04 1996-05-08 Mitsubishi Denki Kabushiki Kaisha Parameter measuring method, charge/discharge control method and apparatus and life predicting method for secondary batteries and power storage apparatus using the same
US5606240A (en) * 1992-07-21 1997-02-25 Sanyo Electric Co., Ltd. Battery charger
US20020145405A1 (en) * 2001-04-10 2002-10-10 Matsushita Electric Industrial Co., Ltd. Method for activating secondary battery
WO2005073742A1 (en) * 2004-01-26 2005-08-11 Johnson Controls Technology Company System and method for monitoring a vehicle battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5606240A (en) * 1992-07-21 1997-02-25 Sanyo Electric Co., Ltd. Battery charger
EP0711016A2 (en) * 1994-11-04 1996-05-08 Mitsubishi Denki Kabushiki Kaisha Parameter measuring method, charge/discharge control method and apparatus and life predicting method for secondary batteries and power storage apparatus using the same
US20020145405A1 (en) * 2001-04-10 2002-10-10 Matsushita Electric Industrial Co., Ltd. Method for activating secondary battery
WO2005073742A1 (en) * 2004-01-26 2005-08-11 Johnson Controls Technology Company System and method for monitoring a vehicle battery

Also Published As

Publication number Publication date
WO2011071375A1 (en) 2011-06-16

Similar Documents

Publication Publication Date Title
KR101846690B1 (en) System and Method for Managing Battery on the basis of required time for Charging
CN102830361B (en) Battery capacity quick detection method and battery capacity quick detection system
JP5737232B2 (en) Device for determining the remaining life of stationary storage batteries
WO2019171688A1 (en) Remaining capability evaluation method for secondary battery, remaining capability evaluation program for secondary battery, computation device, and remaining capability evaluation system
WO2015041091A1 (en) Secondary cell degradation diagnosis system, and degradation diagnosis method
CN105378497B (en) Method for assessing hybrid vehicle cell health state
JP2013519893A (en) In-situ battery diagnostic method by electrochemical impedance spectroscopy
US20120078552A1 (en) In-situ battery diagnosis method using electrochemical impedance spectroscopy
JP2013122450A (en) Method and apparatus for online determination of battery state of charge and state of health
EP2827162A1 (en) Battery DC impedance measurement
US9267997B2 (en) Systems and methods to determine the condition of a battery
CN108120932B (en) Method and device for estimating state of health of rechargeable battery
KR20140052558A (en) Method for estimating state of battery health
US20180210037A1 (en) Method for determining diagnosis frequency, method for diagnosing deterioration of storage cell, system for determining diagnosis frequency, and device for diagnosing deterioration of storage cell
KR102484115B1 (en) Defect detection device for a used battery pack
CN111505511B (en) Method for measuring capacity of single battery cell of electric vehicle, electronic equipment and storage medium
CN107015155A (en) A kind of battery of electric vehicle SOH measuring method and device
KR20150045600A (en) Battery tester and its control method
CN111051906B (en) Apparatus for determining capacity of energy storage device
CN107037375B (en) Method and device for measuring direct current internal resistance of battery
CN106324510A (en) Battery detection method and device
KR20160108963A (en) Apparatus and method for diagnosing status of battery using high frequency and impedance, and computer-readable recording medium with program therefor
JP2024511082A (en) Methods, devices and computer program products for calculating capacity loss of power storage devices
Mohsin et al. A new lead-acid battery state-of-health evaluation method using electrochemical impedance spectroscopy for second life in rural electrification systems
KR102597670B1 (en) Device and method for estimating life expectancy of a used battery pack

Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee

Effective date: 20130701