DE102022129825B3 - Battery and method for monitoring it - Google Patents
Battery and method for monitoring it Download PDFInfo
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- DE102022129825B3 DE102022129825B3 DE102022129825.6A DE102022129825A DE102022129825B3 DE 102022129825 B3 DE102022129825 B3 DE 102022129825B3 DE 102022129825 A DE102022129825 A DE 102022129825A DE 102022129825 B3 DE102022129825 B3 DE 102022129825B3
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- battery
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title claims abstract description 8
- 239000002800 charge carrier Substances 0.000 claims abstract description 19
- 238000004590 computer program Methods 0.000 claims abstract description 5
- 230000005684 electric field Effects 0.000 claims abstract description 4
- 238000005040 ion trap Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 230000005686 electrostatic field Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 230000032683 aging Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000010584 magnetic trap Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
-
- 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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Secondary Cells (AREA)
Abstract
Die Erfindung stellt ein Verfahren zum Überwachen einer Batterie mit den folgenden Merkmalen bereit: Von elektrischen Ladungsträgern (10) innerhalb der Batterie gebildete Ströme werden gemessen, indem die Ladungsträger (10) in einem elektrischen Feld (E) vorübergehend gespeichert und gezielt entlassen werden.Die Erfindung stellt ferner eine entsprechende Vorrichtung, ein entsprechendes Computerprogramm sowie ein entsprechendes Speichermedium bereit.The invention provides a method for monitoring a battery with the following features: Currents formed by electrical charge carriers (10) within the battery are measured by temporarily storing the charge carriers (10) in an electric field (E) and releasing them in a targeted manner The invention also provides a corresponding device, a corresponding computer program and a corresponding storage medium.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Überwachen einer Batterie. Die vorliegende Erfindung betrifft darüber hinaus eine entsprechende Batterie, ein entsprechendes Computerprogramm sowie ein entsprechendes maschinenlesbares Speichermedium.The present invention relates to a method for monitoring a battery. The present invention also relates to a corresponding battery, a corresponding computer program and a corresponding machine-readable storage medium.
Aktuelle Lösungen zur Batterieüberwachung beruhen hauptsächlich auf einer Messung der über die zu überwachende Batterie abfallenden Spannung, um Rückschlüsse auf die in der Batterie verbleibende Ladung zu ziehen. Eine wiederholte Messung dieser Spannungen während aufeinanderfolgender Lade- und Entladezyklen gibt Aufschluss über die Ladekapazität und deren zeitliche Degradierung.Current battery monitoring solutions rely primarily on measuring the voltage dropped across the battery being monitored in order to draw conclusions about the charge remaining in the battery. Repeated measurement of these voltages during successive charging and discharging cycles provides information about the charging capacity and its degradation over time.
Eine Aufgabe der Erfindung besteht darin, das Geschehen im Inneren der Batterie besser beobachten zu können, um etwa Überlastungen einzelner Zellen zu erkennen.One object of the invention is to be able to better observe what is happening inside the battery in order to detect overloads of individual cells.
Die Erfindung stellt vor diesem Hintergrund ein Verfahren zum Überwachen einer Batterie, eine entsprechende Batterie, ein entsprechendes Computerprogramm sowie ein entsprechendes Speichermedium gemäß den unabhängigen Ansprüchen bereit.Against this background, the invention provides a method for monitoring a battery, a corresponding battery, a corresponding computer program and a corresponding storage medium according to the independent claims.
Diesen Ausführungsformen liegt die Erkenntnis zugrunde, dass mittels Quantensensoren die von der Batterie erzeugten Magnetfelder gemessen werden können, woraus sich die elektrischen Ströme ableiten lassen, die durch die Batterie fließen. Diese Fähigkeit wiederum ermöglicht eine präzise Bildgebung (imaging) der Flüsse selbst mikroskopisch kleiner Batterieströme in der Batterie. Geeignete Quantensensoren können somit nicht-invasiv gleich einer „magnetische Kamera“ in das Innere der Batterie blicken.These embodiments are based on the knowledge that the magnetic fields generated by the battery can be measured using quantum sensors, from which the electrical currents that flow through the battery can be derived. This capability, in turn, enables precise imaging of the flows of even microscopic battery currents within the battery. Suitable quantum sensors can therefore look inside the battery non-invasively, like a “magnetic camera”.
In Weiterentwicklung dieses Grundgedankens entstand die erfindungsgemäße Lösung, Sensoren in eine Batterie ein- oder an diese anzubauen, welche - beispielsweise zur Messung der Batterieströme am Prüfstand und im Normalbetrieb einer Traktionsbatterie beim Kunden, oder zur Qualitätsprüfung beim Batteriehersteller oder end of line in der Fahrzeugfertigung - dem Wirkprinzip einer lonenfalle genügen.Further development of this basic idea resulted in the solution according to the invention of installing sensors in or on a battery, which - for example for measuring the battery currents on the test bench and during normal operation of a traction battery at the customer's, or for quality testing at the battery manufacturer or end of line in vehicle production - comply with the operating principle of an ion trap.
Eine derartige Falle nutzt - etwa in der Funktion eines Massenspektrometers - elektromagnetische Felder, um geladene Teilchen für einen längeren Zeitraum in Ruhe im Vakuum zu halten. In aller Regel handelt es sich hierbei um die namensgebenden Ionen, die im Vakuum durch die elektrischen bzw. magnetischen Felder gleichsam gefangen sind.Such a trap uses electromagnetic fields - for example in the function of a mass spectrometer - to keep charged particles at rest in a vacuum for a longer period of time. As a rule, these are the eponymous ions that are trapped in the vacuum by the electric or magnetic fields.
Ein Vorzug dieser Technologie liegt in ihrem fortgeschrittenen Reifegrad (technology readiness level, TRL), welcher bereits einen Versuchsaufbau im Labor (TRL 4) gestattet; geeignete lonenfallen wurden hier bereits zur Batterieüberwachung genutzt.An advantage of this technology is its advanced technology readiness level (TRL), which already allows experimental setup in the laboratory (TRL 4); Suitable ion traps have already been used here for battery monitoring.
Ein weiterer Vorteil liegt in ihrer hohen Empfindlichkeit (sensitivity). So wurde bei der Vermessung eines mit einer Frequenz von etwa 14 MHz oszillierenden Magnetfeldes beispielsweise eine Empfindlichkeit von 4,6
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Further advantageous embodiments of the invention are specified in the dependent claims.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.
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1 und2 zeigen eine Paul-Ionenfalle. -
3 zeigt eine Penning-Ionenfalle.
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1 and2 show a Paul ion trap. -
3 shows a Penning ion trap.
Das allgemeine Funktionsprinzip einer erfindungsgemäßen Batterie beruht auf der Nutzung einer lonenfalle, also einer Kombination aus elektrischen oder magnetischen Feldern, um geladene Teilchen, insbesondere Ionen, einzufangen, zu speichern und gezielt aus der Falle (trap) zu entlassen.The general functional principle of a battery according to the invention is based on the use of an ion trap, i.e. a combination of electric or magnetic fields, to capture and store charged particles, in particular ions, and release them from the trap in a targeted manner.
Eine Zusammenschau der
Die lonenfalle umfasst hier zwei elektrisch verbundene Endkappenelektroden (a) mit paralleler, abbildungsgemäß waagerechter Grundfläche, die zu beiden Seiten einer in ihrer Mittelebene angeordneten Ringelektrode (b) angebracht sind. Zwischen Endkappenelektroden (a) einerseits und Ringelektrode (b) andererseits wird eine hochfrequente Wechselspannung angelegt, welche im Inneren der Falle ein elektrisches Quadrupolfeld (E) erzeugt. Auf die zu speichernden Ladungsträger (10), welche die Batterieströme bilden, wird auf diese Weise eine periodisch wechselnde Kraft (FE) ausgeübt, wie im Folgenden am Beispiel einer positiven (+) Ladung erläutert sei.The ion trap here comprises two electrically connected end cap electrodes (a) with a parallel, horizontal base surface as shown, which are attached to both sides of a ring electrode (b) arranged in its central plane. A high-frequency alternating voltage is applied between the end cap electrodes (a) on the one hand and the ring electrode (b) on the other, which generates an electric quadrupole field (E) inside the trap. In this way, a periodically changing force ( FE ) is exerted on the charge carriers (10) to be stored, which form the battery currents, as will be explained below using the example of a positive (+) charge.
In der in
Um dieser Berührung zuvorzukommen, werden die Elektroden (a, b) in die Konfiguration gemäß
Alternativ kommt die Nutzung einer Paul-Ionenfalle gemäß
Claims (10)
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DE102022129825.6A DE102022129825B3 (en) | 2022-11-11 | 2022-11-11 | Battery and method for monitoring it |
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DE102022129825.6A DE102022129825B3 (en) | 2022-11-11 | 2022-11-11 | Battery and method for monitoring it |
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DE102022129825B3 true DE102022129825B3 (en) | 2023-12-21 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013226696A1 (en) | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Method for monitoring a rechargeable battery, evaluation device and measuring system |
DE102018111220B3 (en) | 2018-05-09 | 2019-05-23 | Bundesrepublik Deutschland, vertr. durch das Bundesministerium für Wirtschaft und Energie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt | Method for producing an atomic trap and atomic trap |
DE102020112281A1 (en) | 2019-05-09 | 2020-11-12 | Thermo Fisher Scientific (Bremen) Gmbh | Charge detection for ion current control |
WO2021151429A2 (en) | 2020-01-30 | 2021-08-05 | Elmos Semiconductor Se | Nv center-based microwave-free galvanically isolated magnetometer |
DE102020204571A1 (en) | 2020-04-09 | 2021-10-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for measuring phase currents of a device under test, in particular an inverter |
WO2021219207A1 (en) | 2020-04-28 | 2021-11-04 | Toyota Motor Europe | Monitorable energy-generating system |
DE102009042618B4 (en) | 2008-09-26 | 2022-02-10 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | System and method for determining the state of charge of a battery using magnetostriction to detect a magnetic reaction of battery material |
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2022
- 2022-11-11 DE DE102022129825.6A patent/DE102022129825B3/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009042618B4 (en) | 2008-09-26 | 2022-02-10 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | System and method for determining the state of charge of a battery using magnetostriction to detect a magnetic reaction of battery material |
DE102013226696A1 (en) | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Method for monitoring a rechargeable battery, evaluation device and measuring system |
DE102018111220B3 (en) | 2018-05-09 | 2019-05-23 | Bundesrepublik Deutschland, vertr. durch das Bundesministerium für Wirtschaft und Energie, dieses vertreten durch den Präsidenten der Physikalisch-Technischen Bundesanstalt | Method for producing an atomic trap and atomic trap |
DE102020112281A1 (en) | 2019-05-09 | 2020-11-12 | Thermo Fisher Scientific (Bremen) Gmbh | Charge detection for ion current control |
WO2021151429A2 (en) | 2020-01-30 | 2021-08-05 | Elmos Semiconductor Se | Nv center-based microwave-free galvanically isolated magnetometer |
DE102020204571A1 (en) | 2020-04-09 | 2021-10-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for measuring phase currents of a device under test, in particular an inverter |
WO2021219207A1 (en) | 2020-04-28 | 2021-11-04 | Toyota Motor Europe | Monitorable energy-generating system |
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