WO2015090926A1 - Verfahren zur überwachung eines akkumulators, auswerteeinrichtung und messsystem - Google Patents
Verfahren zur überwachung eines akkumulators, auswerteeinrichtung und messsystem Download PDFInfo
- Publication number
- WO2015090926A1 WO2015090926A1 PCT/EP2014/076167 EP2014076167W WO2015090926A1 WO 2015090926 A1 WO2015090926 A1 WO 2015090926A1 EP 2014076167 W EP2014076167 W EP 2014076167W WO 2015090926 A1 WO2015090926 A1 WO 2015090926A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetometer
- accumulator
- flux density
- magnetic flux
- magnetic
- Prior art date
Links
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]
- G01R31/382—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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0023—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0094—Sensor arrays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
- G01R33/072—Constructional adaptation of the sensor to specific applications
-
- 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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Definitions
- the invention is based on a method for monitoring a
- Current sensor may be embodied for example as a magnetic field sensor. This can be used to measure the current delivered by the battery. This makes it possible, for example, to measure an increased current flow in the event of a short circuit of a device connected to the battery and to take appropriate measures against it.
- a single cell will be referred to in the following accumulator, accumulator cell or cell.
- the inventive method with the features of the independent claim has the advantage that an internal short circuit of a battery can be determined in a simple manner.
- Short-circuiting of a rechargeable battery occurs when additional currents flow directly inside the battery cell between the electrodes, without this current flowing through the load connected to a rechargeable battery and thus resulting in an internal discharge of the rechargeable battery.
- Such internal short circuits are undesirable because, on the one hand, the accumulator is thereby discharged and, on the other hand, due to heat generated by the current flow, the accumulator can be heated and damaged.
- Such internal short circuits can be triggered, for example, by interfering metal or carbon particles that connect electrodes within the cell.
- such short circuits can be caused inside the cell also by a high heat exposure to the accumulator.
- a crack in a separator between two electrodes may allow for this short circuit.
- a first magnetometer which has a magnetic flux density in the rechargeable battery or immediately adjacent to it
- Magnetometer remote from the first accumulator arranged so that a magnetic flux in the first accumulator can not affect the second magnetometer.
- both magnetometers should measure only a magnetic flux caused by disturbances such as the earth's magnetic field or by magnetic or current-carrying elements in the vicinity of the device. Therefore, the magnetic flux measured by both magnetometers should be approximately equal. However, if there is now an internal short circuit in the first accumulator, so
- the second magnetometer By measuring with the two magnetometers can be made in a simple manner a reliable statement about an internal short circuit in the first accumulator.
- the measures listed in the dependent claims advantageous refinements and improvements of the method specified in the independent claim are possible. So it is advantageous that the second magnetometer repeatedly makes a measurement of the magnetic flux density, so that an average value for a background flux density and in particular this value for a particular route or the location of the Vehicle is determined. Thus, a more accurate value for a background magnetic field is available, so that a statement about a deviation from this background magnetic field can be made more secure.
- the magnetic background flux density with the second magnetometer takes place at the same time as a measurement with the first magnetometer in order to be able to subtract a temporal change of the magnetic field due to external influences from the measured values and thus to be able to exclude such disturbing influence ,
- a signal technical evaluation of magnetic field data of both magnetometers in the time and frequency domain is useful to typical industrial disturbances by, for example, power fields through transformers or trolley wires, e.g. to identify rail vehicles.
- Evaluation device for monitoring a first accumulator having interfaces to a first magnetometer, to a second magnetometer and to an output unit for outputting an error message.
- magnetometers are particularly advantageous to design the magnetometers as Hall sensors, as GMR sensors or as SQI D sensors, since these sensors
- the magnetic field sensors can also be arranged in a particular embodiment in the interior of the electrochemical cell or of the electrode winding.
- a magnetic flux concentrator device on at least one of the magnetometers in order to be able to amplify a magnetic field accordingly and to exclude interference influences.
- a magnetic shielding device in such a way that an overload of the magnetometer, for example a permanent change due to excessive influence of a magnetic field, can be prevented. This is particularly helpful if a high magnetic flux density resulting from a power extraction from the accumulator is to be shielded by the magnetometer.
- Magnetometer serves as a reference signal generator. Furthermore, with such an arrangement it is also possible to detect an internal short circuit in the second accumulator with the second magnetometer arranged on the second accumulator, while the first magnetometer arranged on the first accumulator now serves as reference signal generator for this measurement.
- An appropriate measuring system can be scaled up to a large number of accumulators. It can also be removed from the accumulator another magnetometer as a magnetometer for a measurement of the magnetic
- Accumulator are arranged to measure the magnetic background flux density is used.
- Magnetometer can be subtracted with the help of modeled values for the location and thus a measurement of at least stronger short circuits are possible.
- FIG. 1 shows a first exemplary embodiment of a measuring system according to the invention with an evaluation device according to the invention
- FIG. 2 shows a second exemplary embodiment of a measuring system according to the invention with an evaluation device according to the invention
- Figure 3 shows another embodiment with an arrangement of
- Figure 4 shows an embodiment of a sequence of the invention
- the present invention can be used for accumulators in any device.
- a use for motor vehicles is advantageous, since in this case a desire for a long shelf life of
- Accumulators are arranged, therefore, for example, be a motor vehicle.
- FIG. 1 shows a first exemplary embodiment for monitoring a single accumulator 1.
- a magnetometer 2 is arranged on an outer side of the accumulator.
- Accumulator is preferably formed of a non-magnetic material or of a non-conductive material, such as plastic.
- the magnetometer easily detected. The magnetometer delivers its
- the first magnetometer 2 provides only an amount of the measured magnetic flux density. In a further embodiment, however, it is also possible that vector information about the direction of the magnetic flux and the amplitude are measured and transmitted to the evaluation unit 3. In a first embodiment, the first magnetometer 2 can continuously supply this information. In a further embodiment, it is also possible that the evaluation unit 3 initiates a corresponding measurement.
- the first magnetometer 2 is connected via a first interface 11 to the
- Evaluation unit 3 connected.
- a second magnetometer 4 is connected to the evaluation unit 3.
- the second magnetometer 4 is constructed identical to the first magnetometer.
- the second magnetometer 4 is arranged in the device, that is to say for example in a motor vehicle, that a disturbance of electrical currents flowing inside the accumulator 1 can be excluded or almost eliminated.
- the evaluation unit 3 has a computing device 5 which evaluates the measured magnetic flux densities of the magnetometers 2, 4. In another embodiment, it is possible that the measurement results in a
- Memory unit 6 are stored in the evaluation unit 3 for further evaluation. For example, it is possible that averaging of the flux densities measured by the second magnetometer 4 determines a background flux density by averaging. It is also possible to perform a frequency analysis coupled with vectoring so as to obtain a
- the magnetic flux densities are in terms of their amplitude and / or their orientation of the
- Evaluation unit 3 compared. If it turns out that a deviation is detected, the evaluation unit 3 accesses an output unit 7 via a third interface 13.
- a warning lamp 8 may be connected to a user of the device, so for example a driver of the vehicle, before an internal short circuit in the accumulator 1 warns.
- the output unit 7 can also drive other systems, for example an electrical control unit for the accumulator 1 or a cooling system of the accumulator 1. Preference is given to measuring the magnetic flux densities with the
- Magnetometers 2, 4 then performed when no charge of the accumulator 1, but also no discharge takes place.
- the evaluation unit accesses via terminals 14, 15 to the two poles 16, 17 of the accumulator 1 and performs a voltage and current measurement. Is found that the
- Accumulator emits or absorbs no power, then a measurement of the magnetic flux density by means of the magnetometer 2, 4 is performed in this period. In one embodiment, the measurement takes place at the same time. Furthermore, it is also possible to perform a measurement result of the first magnetometer 2 with an averaged result of the second magnetometer 4. Furthermore, over a longer period of time, the measurement results of both
- the first magnetometer may be protected by a protection device 18 for protection against excessive magnetic flux.
- the protective device 18 is formed for example of Monel.
- Flow concentrator device 19 may be provided, for example, iron, nickel or an alloy having such a geometric structure that the magnetic flux lines from the short circuit better to the first
- Magnetometer 2 are passed.
- the flux concentrator (19) can be adapted to the winding direction of the electrode windings located inside the cell and their geometry.
- analog or digital filter devices and frequency analyzers can be provided in the evaluation unit 3 in order to filter out fluctuations in the magnetic field from the environment from the measurement signal.
- FIG. a first accumulator 21 and a second accumulator 22 are provided.
- a first magnetometer 23 and the second accumulator 22 a second magnetometer 24 is arranged on the first accumulator 21, a first magnetometer 23 and the second accumulator 22, a second magnetometer 24 is arranged. Both magnetometers 23, 24 are connected to an evaluation unit 25, which measures the magnetic flux densities in the accumulators 21, 22.
- the evaluation unit 25 For monitoring the operation of the accumulators 21, 22, the evaluation unit 25 is provided with a corresponding measuring device for measuring an operation of the accumulators 21, 22, that is to say in particular for measuring an applied voltage and a current which is output by the accumulators.
- the evaluation unit 25 is connected to an output unit 27. If both accumulators are not in a charging or discharging operation, the magnetometers 23, 24 should only measure a background magnetic field. However, if there is an internal short circuit in one of the accumulators 21, 22, the associated magnetometer will measure a significantly higher flux density. This is determined by the evaluation unit 25 so that it can issue an error message to the output unit 27.
- FIG. 3 shows an exemplary embodiment in which three accumulators 31, 32, 33 are arranged in one device 30. On all sides of the
- Accumulators 31, 32, 33 are arranged magnetometer 40, which measure the magnetic flux density for each associated accumulator. Between the accumulators magnetometers are arranged, which can determine the magnetic flux density from at least two accumulators. Outside the battery module 30, a reference magnetometer is preferably provided which determines a magnetic background flux density.
- FIG. 4 shows an example of a method sequence according to the invention.
- the method is initiated with an initialization step 50.
- Such a measurement can take place after predetermined time intervals. However, it can also be triggered by a diagnostic program.
- a magnetic flux density is performed by the at least two magnetometers.
- a subsequent evaluation step 52 it is determined whether the measurement results of the two magnetometers in
- Measurement results over a predetermined amount from each other it is branched to an error step 54.
- a deviation is detected and outputted to an output unit accordingly.
- a second evaluation step 55 it is subsequently checked whether the deviation also exceeds a second, higher difference. If this is not the case, the method is terminated in a final step 56.
- An error is processed further by the output unit.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167009893A KR101707815B1 (ko) | 2013-12-19 | 2014-12-02 | 배터리의 모니터링 방법, 평가 장치 및 측정 시스템 |
US15/106,093 US9759775B2 (en) | 2013-12-19 | 2014-12-02 | Method for monitoring a battery, evaluation device, and measuring system |
CN201480050750.8A CN105556324B (zh) | 2013-12-19 | 2014-12-02 | 用于监视蓄电池的方法、分析装置和测量系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013226696.0 | 2013-12-19 | ||
DE102013226696.0A DE102013226696A1 (de) | 2013-12-19 | 2013-12-19 | Verfahren zur Überwachung eines Akkumulators, Auswerteeinrichtung und Messsystem |
Publications (1)
Publication Number | Publication Date |
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WO2015090926A1 true WO2015090926A1 (de) | 2015-06-25 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2014/076167 WO2015090926A1 (de) | 2013-12-19 | 2014-12-02 | Verfahren zur überwachung eines akkumulators, auswerteeinrichtung und messsystem |
Country Status (5)
Country | Link |
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US (1) | US9759775B2 (de) |
KR (1) | KR101707815B1 (de) |
CN (1) | CN105556324B (de) |
DE (1) | DE102013226696A1 (de) |
WO (1) | WO2015090926A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4160159A1 (de) * | 2021-09-30 | 2023-04-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und durchflussmessgerät zum erfassen einer durchflusszeit eines fluids |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114295984A (zh) | 2013-03-14 | 2022-04-08 | 加州理工学院 | 检测电子和电化学能源单元异常 |
EP3356836B1 (de) | 2015-10-01 | 2022-06-29 | California Institute of Technology | System und verfahren zur überwachung der eigenschaften von energieeinheiten |
CN112394292B (zh) * | 2020-11-16 | 2022-01-04 | 中国科学院上海硅酸盐研究所 | 电池故障动态检测系统 |
DE102022129825B3 (de) | 2022-11-11 | 2023-12-21 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterie und Verfahren zu deren Überwachung |
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US20060186859A1 (en) * | 2005-02-18 | 2006-08-24 | Masato Fujikawa | Internal short detection apparatus for secondary-battery, internal short detection method for secondary-battery, battery-pack, and electronic equipment |
DE102009000225A1 (de) * | 2009-01-14 | 2010-07-15 | Robert Bosch Gmbh | Batterie mit integriertem Stromsensor |
US8125214B1 (en) * | 2008-02-12 | 2012-02-28 | Daniel Artemus Steingart | Determining electrical current using at least two sensors at a known distance from each other |
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US4422166A (en) * | 1981-08-17 | 1983-12-20 | Klein Associates, Inc. | Undersea sonar scanner correlated with auxiliary sensor trace |
US5250903A (en) * | 1989-05-31 | 1993-10-05 | Amoco Corporation | Method and apparatus using oscillatory magnetic field to determine state of charge of an electrolytic storage cell |
US5537042A (en) * | 1994-11-18 | 1996-07-16 | Eldec Corporation | Method and system for unobtrusively measuring physical properties in electrochemical processes |
AU2005224674B2 (en) * | 2004-03-17 | 2010-02-25 | Kennecott Utah Copper Llc | Monitoring electrolytic cell currents |
US8198864B2 (en) * | 2007-11-05 | 2012-06-12 | GM Global Technology Operations LLC | Method and system for determining a state of charge of a battery |
US7928690B2 (en) * | 2007-11-29 | 2011-04-19 | GM Global Technology Operations LLC | Method and system for determining a state of charge of a battery |
CA2749334A1 (en) | 2008-06-05 | 2009-12-10 | Cadex Electronics Inc. | Methods and apparatus for battery testing |
JP5560290B2 (ja) | 2009-02-05 | 2014-07-23 | マグナ−ラスティック ディヴァイシーズ、インコーポレイテッド | 充電状態をモニタリングするための装置及び方法、バッテリ充電状態センサを含むlfpバッテリ |
FR2987680B1 (fr) * | 2012-03-05 | 2014-03-14 | Smartfuture | Procede de mesure de courant dans un reseau electrique |
-
2013
- 2013-12-19 DE DE102013226696.0A patent/DE102013226696A1/de active Pending
-
2014
- 2014-12-02 KR KR1020167009893A patent/KR101707815B1/ko active IP Right Grant
- 2014-12-02 CN CN201480050750.8A patent/CN105556324B/zh active Active
- 2014-12-02 WO PCT/EP2014/076167 patent/WO2015090926A1/de active Application Filing
- 2014-12-02 US US15/106,093 patent/US9759775B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20060186859A1 (en) * | 2005-02-18 | 2006-08-24 | Masato Fujikawa | Internal short detection apparatus for secondary-battery, internal short detection method for secondary-battery, battery-pack, and electronic equipment |
US8125214B1 (en) * | 2008-02-12 | 2012-02-28 | Daniel Artemus Steingart | Determining electrical current using at least two sensors at a known distance from each other |
DE102009000225A1 (de) * | 2009-01-14 | 2010-07-15 | Robert Bosch Gmbh | Batterie mit integriertem Stromsensor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP4160159A1 (de) * | 2021-09-30 | 2023-04-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und durchflussmessgerät zum erfassen einer durchflusszeit eines fluids |
WO2023052285A1 (de) * | 2021-09-30 | 2023-04-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und durchflussmessgerät zum erfassen einer durchflusszeit eines fluids |
Also Published As
Publication number | Publication date |
---|---|
CN105556324B (zh) | 2017-07-14 |
CN105556324A (zh) | 2016-05-04 |
DE102013226696A1 (de) | 2015-06-25 |
KR20160048221A (ko) | 2016-05-03 |
US20160320455A1 (en) | 2016-11-03 |
US9759775B2 (en) | 2017-09-12 |
KR101707815B1 (ko) | 2017-02-17 |
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