DE102014018445A1 - Battery and method for operating a battery - Google Patents
Battery and method for operating a battery Download PDFInfo
- Publication number
- DE102014018445A1 DE102014018445A1 DE102014018445.5A DE102014018445A DE102014018445A1 DE 102014018445 A1 DE102014018445 A1 DE 102014018445A1 DE 102014018445 A DE102014018445 A DE 102014018445A DE 102014018445 A1 DE102014018445 A1 DE 102014018445A1
- Authority
- DE
- Germany
- Prior art keywords
- cell
- battery
- cell group
- switching unit
- predetermined temperature
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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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
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
Die Erfindung betrifft eine Batterie (1) mit zumindest zwei elektrisch miteinander verschalteten Zellgruppen (2, 6), die jeweils eine vorgegebene Anzahl von elektrisch seriell und/oder parallel miteinander verschalteten elektrochemisch aktiven Einzelzellen (4) umfassen. Erfindungsgemäß weisen die Einzelzellen (4) einer ersten Zellgruppe (2) eine andere Zellchemie als die Einzelzellen (4) einer zweiten Zellgruppe (6) auf. Weiterhin betrifft die Erfindung ein Verfahren zum Betrieb einer solchen Batterie (1).The invention relates to a battery (1) with at least two cell groups (2, 6) electrically interconnected to one another, each of which comprises a predetermined number of electrochemically active individual cells (4) electrically connected in series and / or in parallel with one another. According to the invention, the individual cells (4) of a first cell group (2) have a different cell chemistry than the individual cells (4) of a second cell group (6). Furthermore, the invention relates to a method for operating such a battery (1).
Description
Die Erfindung betrifft eine Batterie mit zumindest zwei elektrisch miteinander verschalteten Zellgruppen, die jeweils eine vorgegebene Anzahl von elektrisch seriell und/oder parallel miteinander verschalteten elektrochemisch aktiven Einzelzellen umfassen. Weiterhin betrifft die Erfindung ein Verfahren zum Betrieb einer solchen Batterie.The invention relates to a battery having at least two cell groups electrically interconnected, each comprising a predetermined number of electrochemically active single cells connected electrically in series and / or in parallel with each other. Furthermore, the invention relates to a method for operating such a battery.
Aus dem Stand der Technik sind elektrische Batterien zur Anordnung in Fahrzeugen, insbesondere in Fahrzeugen mit einem Elektroantrieb oder Hybridantrieb, bekannt, wobei die Batterien aus einer vorgegebenen Anzahl von elektrisch seriell und/oder parallel geschalteten elektrochemisch aktiven Einzelzellen gebildet sind. Die Einzelzellen umfassen eine in einem Zellgehäuse angeordnete Elektrodenanordnung und sind über elektrische Polkontakte zu einer Zellgruppe oder zu mehreren Zellgruppen verschaltet.From the prior art electric batteries for mounting in vehicles, in particular in vehicles with an electric drive or hybrid drive, known, the batteries are formed from a predetermined number of electrically series and / or parallel electrochemically active single cells. The individual cells comprise an electrode arrangement arranged in a cell housing and are connected via electrical pole contacts to a cell group or to a plurality of cell groups.
Der Erfindung liegt die Aufgabe zu Grunde, eine gegenüber dem Stand der Technik verbesserte Batterie und ein verbessertes Verfahren zum Betrieb einer solchen Batterie anzugeben.The invention is based on the object to provide a comparison with the prior art improved battery and an improved method for operating such a battery.
Die Aufgabe wird erfindungsgemäß hinsichtlich der Batterie durch die in Anspruch 1 und hinsichtlich des Verfahrens durch die in Anspruch 5 angegebenen Merkmale gelöst.The object is achieved with respect to the battery by the in claim 1 and in terms of the method by the features specified in
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Eine Batterie umfasst zumindest zwei elektrisch miteinander verschaltete Zellgruppen, die jeweils aus einer vorgegebenen Anzahl von elektrisch seriell und/oder parallel miteinander verschalteten elektrochemisch aktiven Einzelzellen gebildet sind.A battery comprises at least two cell groups which are electrically interconnected and which are each formed from a predetermined number of electrochemically active individual cells connected electrically in series and / or in parallel with one another.
Erfindungsgemäß weisen die Einzelzellen einer ersten Zellgruppe eine andere Zellchemie als die Einzelzellen einer zweiten Zellgruppe auf.According to the invention, the individual cells of a first cell group have a different cell chemistry than the individual cells of a second cell group.
Unter der Zellchemie wird dabei vorliegend eine Kombination von Materialien einer innerhalb einer Einzelzelle angeordneten Elektrodenanordnung und eines verwendeten Elektrolyts verstanden. Das heißt, bei unterschiedlicher Zellchemie unterscheiden sich die Elektrodenanordnungen hinsichtlich der verwendeten Materialen und/oder der Elektrolyte hinsichtlich einer chemischen Zusammensetzung.In this case, cell chemistry is understood as meaning a combination of materials of an electrode arrangement arranged within a single cell and of an electrolyte used. That is, with different cell chemistry, the electrode arrangements differ with regard to the materials used and / or the electrolytes with respect to a chemical composition.
Mittels der jeweils unterschiedlichen Zellchemie der Einzelzellen der Zellgruppen ist es in besonders vorteilhafter Weise möglich, einen Leistungs- und/oder Kapazitätsverlust bei wechselnden Temperaturen, insbesondere Betriebs- und/oder Lagerungstemperaturen der Batterie, zu vermeiden oder zumindest zu verringern.By means of the respectively different cell chemistry of the individual cells of the cell groups, it is possible in a particularly advantageous manner to avoid or at least reduce a power and / or capacity loss at changing temperatures, in particular operating and / or storage temperatures of the battery.
Insbesondere sind die Zellgruppen derart gebildet, dass die Zellgruppen jeweils einen vorgegebenen Temperaturbereich umfassen und in Abhängigkeit eines Leistungsbedarfs jeweils ganz oder teilweise zu- oder abgeschaltet werden, so dass die Batterie zumindest weitestgehend temperaturunabhängig und gleichzeitig mit einer gleichbleibenden elektrischen Leistung betrieben werden kann.In particular, the cell groups are formed such that the cell groups each comprise a predetermined temperature range and are switched on or off depending on a power requirement in whole or in part, so that the battery can be operated at least largely independent of temperature and simultaneously with a constant electrical power.
Zudem wird mittels der unterschiedlichen Zellchemie der Zellgruppen eine Verbesserung einer Haltbarkeit und/oder Lebensdauer der Einzelzellen erreicht, so dass eine erhöhte Anzahl an Lade- und Entladezyklen bei wechselnden Temperaturen sichergestellt werden kann.In addition, an improvement in the durability and / or lifetime of the individual cells is achieved by means of the different cell chemistry of the cell groups, so that an increased number of charging and discharging cycles can be ensured at changing temperatures.
Darüber hinaus kann durch solch eine Kombination der Einzelzellen mit unterschiedlicher Zellchemie zumindest weitestgehend eine Deckung eines Kapazitäts- und/oder Leistungsbedarfs und/oder zumindest ein Ausgleich verschiedener Batterieeigenschaften erzielt werden.In addition, such a combination of the individual cells with different cell chemistry can at least largely achieve a coverage of a capacity and / or power requirement and / or at least a compensation of different battery properties.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand einer Zeichnung näher erläutert.Embodiments of the invention will be explained in more detail below with reference to a drawing.
Dabei zeigt:Showing:
Die einzige
Insbesondere ist die Batterie
Die Batterie
Die Zellgruppen
Im Inneren des Zellgehäuses der Einzelzellen
Die Einzelzellen
Weiterhin ist eine Vorrichtung zumindest zum Spannungsausgleich innerhalb einer Zellgruppe
Die Batterie
Innerhalb der zweiten und dritten Schalteinheit S2, S3 sind Dioden D1 bis D4 zur Vorgabe einer Stromrichtung beim Laden und/oder Entladen vorgesehen, wobei den Zellgruppen
Außerdem umfasst die erste Schalteinheit S1 einen elektrischen Widerstand
Mittels der zweiten und dritten Schalteinheit S2, S3 wird in Abhängigkeit des Steuersignals jeweils das Laden und/oder Entladen der ersten oder zweiten Zellgruppe
In dem vorliegenden Ausführungsbeispiel ist die erste Schalteinheit S1 derart eingestellt, dass die zweite Zellgruppe
Zudem ist der Widerstand
In diesem Ausführungsbeispiel ist die zweite und dritte Schalteinheit S2, S3 derart eingestellt, dass sowohl die erste Zellgruppe
Insbesondere ist die Zellchemie der Einzelzellen
Alternativ können beide Zellgruppen
In einer weiteren nicht gezeigten Ausführungsform können zusätzlich zu den beiden dargestellten Zellgruppen
In einer weiteren nicht gezeigten Ausführungsform kann die Batterie zusätzlich zu dem Widerstand
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Batteriebattery
- 22
- Erste ZellgruppeFirst cell group
- 33
- Elektrischer KontaktElectric contact
- 44
- Einzelzellesingle cell
- 55
- Widerstandresistance
- 66
- Zweite ZellgruppeSecond cell group
- D1 bis D4D1 to D4
- Diodediode
- S1S1
- Erste SchalteinheitFirst switching unit
- S2S2
- Zweite SchalteinheitSecond switching unit
- S3S3
- Dritte SchalteinheitThird switching unit
- MM
- Masse-BezugspotentialGround reference potential
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014018445.5A DE102014018445A1 (en) | 2014-12-12 | 2014-12-12 | Battery and method for operating a battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014018445.5A DE102014018445A1 (en) | 2014-12-12 | 2014-12-12 | Battery and method for operating a battery |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102014018445A1 true DE102014018445A1 (en) | 2015-06-25 |
Family
ID=53275339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014018445.5A Withdrawn DE102014018445A1 (en) | 2014-12-12 | 2014-12-12 | Battery and method for operating a battery |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102014018445A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016223958A1 (en) * | 2016-12-01 | 2018-06-07 | Bayerische Motoren Werke Aktiengesellschaft | Method and control unit for operating an energy store |
DE102021124050A1 (en) | 2021-09-17 | 2023-03-23 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with an electrical energy store |
US11682914B2 (en) | 2016-11-25 | 2023-06-20 | Dyson Technology Limited | Battery system |
-
2014
- 2014-12-12 DE DE102014018445.5A patent/DE102014018445A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11682914B2 (en) | 2016-11-25 | 2023-06-20 | Dyson Technology Limited | Battery system |
DE102016223958A1 (en) * | 2016-12-01 | 2018-06-07 | Bayerische Motoren Werke Aktiengesellschaft | Method and control unit for operating an energy store |
DE102021124050A1 (en) | 2021-09-17 | 2023-03-23 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with an electrical energy store |
WO2023041551A1 (en) | 2021-09-17 | 2023-03-23 | Bayerische Motoren Werke Aktiengesellschaft | Vehicle with an electric energy storage device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R230 | Request for early publication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |