EP2162945A1 - Rechargeable power supply device having an identification device - Google Patents

Rechargeable power supply device having an identification device

Info

Publication number
EP2162945A1
EP2162945A1 EP08759412A EP08759412A EP2162945A1 EP 2162945 A1 EP2162945 A1 EP 2162945A1 EP 08759412 A EP08759412 A EP 08759412A EP 08759412 A EP08759412 A EP 08759412A EP 2162945 A1 EP2162945 A1 EP 2162945A1
Authority
EP
European Patent Office
Prior art keywords
power supply
chip
supply device
rechargeable power
stored
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Withdrawn
Application number
EP08759412A
Other languages
German (de)
French (fr)
Inventor
Wolf Matthias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2162945A1 publication Critical patent/EP2162945A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
    • 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 relates to a rechargeable power supply device, such as a battery pack or battery pack, which supplies an electrical appliance with energy and which is provided with an identification device.
  • a rechargeable power supply device such as a battery pack or battery pack
  • an electrical coding is known from the prior art by means of coding resistors.
  • a rechargeable power supply device for supplying power to an electric appliance, the power supply device being provided with at least one chip as identification means. Data for identifying the power supply device can be stored on the chip and read out by the electrical device and / or a charger.
  • data such as the current limits, internal resistances, voltage levels on the chip can be stored and updated. This has the advantage that data or information can also be subsequently stored on the chip which, for example, were not yet known at the time of production of the energy supply device or which have changed in the meantime.
  • additional data such as the date of manufacture and / or the
  • the chip is, for example, an RFI chip.
  • RFI chip has the advantage that it can be read out without contact via radio waves, without a separate electrical contact to the associated electrical appliance or charger is necessary.
  • the chip with its data stored thereon is updateable by reprogramming the chip.
  • FIG. 1 is a schematic view of an embodiment of a rechargeable power supply device 10 according to the invention which is provided with an identification device 12 and is arranged in a charger 14.
  • Fig. 1 is a greatly simplified view of a rechargeable power supply device 10 and a charger 14 according to the invention is shown.
  • the energy supply device 10 is, for example, a battery pack or a battery pack.
  • the rechargeable power supply device 10 will be described on the basis of a rechargeable battery or battery pack.
  • battery packs often have to be identified with respect to their electrical properties with respect to electrical appliances or chargers 14.
  • a charger 14 in particular a fast charger, must know the current limits with which it can load a battery pack.
  • a charger 14 needs to know the exact voltage at which charging must be completed.
  • the invention provides a battery pack 10 as a rechargeable power supply device, which is provided with a chip 16.
  • the chip 16 is, for example, at the end of assembly with the
  • the chip 16 is programmed accordingly.
  • data such as the voltage at which the charging process is terminated, can be stored.
  • additional data such as the date of manufacture, the batch number, etc., can be stored.
  • the associated electrical appliance or the charger 14 can read the data of the battery pack 10 later from the chip 16 without an additional electrical contact.
  • a chip 16 for example, a so-called. RFI chip is used.
  • Such an RFI chip forms a kind of transponder.
  • the transponder consists of the chip or microchip, an antenna, a carrier or housing and an energy source (with active transponders).
  • RFID transponders that do not have their own power supply. These can gain their supply voltage for the microchip, for example, by induction from the radio signals of a base station. Such an RFID transponder can be used to identify a battery pack. RFID transponders with their own power supply derive the power to supply the microchip from a built-in battery.
  • RFID transponders or RFI chips have the advantage that no separate electrical contact to the charger 14 or the electrical appliance is necessary to read the chip 16, since the identification is done via radio waves. In other words, the RFID allows non-contact readings without direct visual contact.
  • the chip 16 On the chip 16 also parameters, such as the current limits, internal resistance, voltage levels, etc. can be stored or updated later, which were currently produced as the electrical appliance or the power supply device were not yet known. This data can be transferred to the chip 16 and evaluated correctly.
  • the invention is not limited to the aforementioned data. Basically, any data on the chip 16 can be stored as an identification device and retrieved later, depending on the function and purpose.

Landscapes

  • 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)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a rechargeable power supply device (10) for supplying power to an electrical appliance, wherein the rechargeable power supply device (10) is provided with at least one chip (16) on which data for identification of the power supply device (10) can be stored, and can be read by the electrical appliance and/or by a charger (14).

Description

Beschreibungdescription
Titeltitle
Wiederaufladbare Energieversorgungseinrichtung mit einer IdentifizierungseinrichtungRechargeable energy supply device with an identification device
Stand der TechnikState of the art
Die Erfindung betrifft eine wiederaufladbare Energieversorgungseinrichtung, wie beispielsweise ein Akkupack bzw. Batteriepack, das ein Elektrogerät mit Energie versorgt und das mit einer Identifizierungseinrichtung versehen ist.The invention relates to a rechargeable power supply device, such as a battery pack or battery pack, which supplies an electrical appliance with energy and which is provided with an identification device.
Aus dem Stand der Technik ist eine mechanische Kodierung bekannt, dabei werden Kodierrippen bereitgestellt, so dass nur passende Akkupacks in das zugehörige Gerät passen. Dieses hat jedoch den Nachteil, dass nur bestimmte Geräte zusammen arbeiten können.From the prior art, a mechanical coding is known, while coding ribs are provided so that only suitable battery packs fit into the associated device. However, this has the disadvantage that only certain devices can work together.
Weiter ist aus dem Stand der Technik eine elektrische Kodierung bekannt mittels Kodierwiderständen. Dabei wird ein zusätzlicher Kontakt, an dem im Akku ein bestimmter Widerstand geschaltet ist, von einem Gerät ausgewertet und damit auf die entsprechenden elektri- sehen Kenndaten geschlossen. Dies hat den Nachteil, dass die elektrische Kodierung mit Widerständen nur eine begrenzte Anzahl an Kodierungen ermöglicht. Eine Zukunftskompatibilität ist eingeschränkt, da die entsprechenden Parametersätze im auslesenden Gerät zu Beginn festgelegt werden müssen.Furthermore, an electrical coding is known from the prior art by means of coding resistors. In this case, an additional contact to which a certain resistance is connected in the battery, evaluated by a device and thus closed on the corresponding electrical characteristics see. This has the disadvantage that the electrical coding with resistors allows only a limited number of codes. Future compatibility is limited as the corresponding parameter sets in the reading device must be set at the beginning.
Darüber hinaus ist aus dem Stand der Technik auch eine elektrische Kodierung über einen Datenbus (BBS 36V System) bekannt. Dabei tauschen über einen zusätzlichen Datenkontakt Gerät und Akku mittels festgelegten Übertragungsprotokollen die erforderlichen Information aus. Zwar gleicht das Bussystem den Nachteil der elektrischen Kodierung mittels Widerständen aus, da der Akku auch vorher nicht bekannte Parameterwerte übermitteln kann. Jedoch hat das Bussystem den Nachteil, dass dennoch zusätzliche Kontakte erforderlich sind zu der der Akku außerdem eine eigene intelligente Elektronik benötigt.In addition, from the prior art, an electrical coding via a data bus (BBS 36V system) known. In the process, the device and the battery exchange the required information via an additional data contact via defined transmission protocols. Although the bus system compensates for the disadvantage of electrical coding by means of resistors, since the battery can also transmit previously unknown parameter values. However, the bus system has the disadvantage that nevertheless additional contacts are required to the battery also requires its own intelligent electronics.
Gemäß der vorliegenden Erfindung, wie in Anspruch 1 beansprucht, wird eine wiederaufladbare Energieversorgungseinrichtung zur Energieversorgung eines Elektrogeräts bereitgestellt, wobei die Energieversorgungseinrichtung mit wenigstens einem Chip versehen ist als Identifizierungseinrichtung. Auf dem Chip sind dabei Daten zur Identifizierung der Energieversorgungseinrichtung abspeicherbar und von dem Elektrogerät und/oder einem Ladegerät auslesbar.According to the present invention as claimed in claim 1, there is provided a rechargeable power supply device for supplying power to an electric appliance, the power supply device being provided with at least one chip as identification means. Data for identifying the power supply device can be stored on the chip and read out by the electrical device and / or a charger.
Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen ausgeführt.Advantageous embodiments of the invention are set forth in the subclaims.
Bei einer vorteilhaften Ausführungsform sind Daten wie beispielsweise die Stromgrenzen, Innenwiderstände, Spannungslevel auf dem Chip abspeicherbar und aktualisierbar. Dies hat den Vorteil, dass auch nachträglich Daten bzw. Informationen auf dem Chip abspeicher- bar sind, die beispielsweise zum Zeitpunkt der Herstellung der E- nergieversorgungseinrichtung noch nicht bekannt waren oder die sich zwischenzeitlich geändert haben.In an advantageous embodiment, data such as the current limits, internal resistances, voltage levels on the chip can be stored and updated. This has the advantage that data or information can also be subsequently stored on the chip which, for example, were not yet known at the time of production of the energy supply device or which have changed in the meantime.
In einer weiteren erfindungsgemäßen Ausführungsform können zusätz- liehe Daten wie beispielsweise das Fertigungsdatum und/oder dieIn a further embodiment of the invention, additional data such as the date of manufacture and / or the
Chargennummer auf dem Chip abgespeichert werden. Dies hat den Vorteil, dass bei einer fehlerhaften Energieversorgungseinrichtung genau deren Herstellung nachverfolgt werden kann und beispielsweise Probleme im Produktionsprozess leichter aufgedeckt werden können.Batch number are stored on the chip. This has the advantage that with a faulty power supply device exactly their production can be tracked and, for example, problems in the production process can be more easily detected.
Gemäß einer weiteren erfindungsgemäßen Ausführungsform ist der Chip beispielsweise ein RFI-Chip. Ein solcher Chip hat den Vorteil, dass er berührungslos über Radiowellen ausgelesen werden kann, ohne dass ein separater elektrischer Kontakt an dem zugehörigen Elektrogerät oder Ladegerät notwendig ist. In einer weiteren Ausführungsform ist der Chip mit seinen darauf gespeicherten Daten aktualisierbar, durch erneutes Programmieren des Chips.According to another embodiment of the invention, the chip is, for example, an RFI chip. Such a chip has the advantage that it can be read out without contact via radio waves, without a separate electrical contact to the associated electrical appliance or charger is necessary. In another embodiment, the chip with its data stored thereon is updateable by reprogramming the chip.
Ausführungsbeispiele der Erfindung sind nachstehend anhand der schematischen Figur der Zeichnung näher erläutert. Es zeigt:Embodiments of the invention are explained below with reference to the schematic figure of the drawing. It shows:
Figur 1 eine schematische Ansicht einer Ausführungsform einer erfindungsgemäßen wiederaufladbaren Energieversorgungseinrichtung 10 die mit einer Identifizierungseinrichtung 12 versehen ist und in einem Ladegerät 14 angeordnet ist.Figure 1 is a schematic view of an embodiment of a rechargeable power supply device 10 according to the invention which is provided with an identification device 12 and is arranged in a charger 14.
In Fig. 1 ist eine stark vereinfachte Ansicht einer erfindungsgemäßen wiederaufladbaren Energieversorgungseinrichtung 10 und eines Ladegeräts 14 gezeigt. Dabei ist die Energieversorgungseinrichtung 10 beispielsweise ein Akkupack bzw. ein Batteriepack.In Fig. 1 is a greatly simplified view of a rechargeable power supply device 10 and a charger 14 according to the invention is shown. In this case, the energy supply device 10 is, for example, a battery pack or a battery pack.
Im nachfolgenden wird die erfindungsgemäße wiederaufladbare Energieversorgungseinrichtung 10 anhand eines Akkus bzw. Akkupacks be- schrieben. Solche Akkupacks müssen häufig gegenüber Elektrogeräten oder Ladegeräten 14 bezüglich ihrer elektrischen Eigenschaften i- dentifiziert werden. Beispielsweise muss ein Ladegerät 14, insbesondere ein Schnelllader die Stromgrenzen, mit denen er einen Akkupack belasten kann kennen. Bei Li-Ion Akkupacks muss ein Ladegerät 14 beispielsweise die genaue Spannung kennen, bei der der Ladevorgang beendet werden muss.In the following, the rechargeable power supply device 10 according to the invention will be described on the basis of a rechargeable battery or battery pack. Such battery packs often have to be identified with respect to their electrical properties with respect to electrical appliances or chargers 14. For example, a charger 14, in particular a fast charger, must know the current limits with which it can load a battery pack. For Li-Ion battery packs, for example, a charger 14 needs to know the exact voltage at which charging must be completed.
Die Erfindung stellt hierzu ein Akkupack 10 als wiederaufladbare Energieversorgungseinrichtung bereit, das mit einem Chip 16 verse- hen ist. Der Chip 16 wird beispielsweise am Montageende mit denFor this purpose, the invention provides a battery pack 10 as a rechargeable power supply device, which is provided with a chip 16. The chip 16 is, for example, at the end of assembly with the
Kenndaten des Akkupacks 10 versehen, anhand dessen das Akkupack 10 von einem Elektrogerät oder einem Ladegerät 14 identifiziert werden kann. Hierzu wird der Chip 16 entsprechend programmiert. Hierbei können Daten, wie beispielsweise die Spannung bei der der Ladevor- gang beendet wird, abgespeichert werden. Dabei können wahlweise zusätzliche Daten, wie beispielsweise das Fertigungsdatum, die Chargennummer usw. mit abgespeichert werden. Das zugeordnete Elektrogerät oder das Ladegerät 14 kann dabei ohne einen zusätzlichen elektrischen Kontakt die Daten des Akkupacks 10 später von dem Chip 16 auslesen. Als Chip 16 wird dabei beispielsweise ein sog. RFI-Chip eingesetzt. Ein solcher RFI-Chip bildet hierbei eine Art Transponder. Der Transponder besteht dabei aus dem Chip bzw. Mikrochip, einer Antenne, einem Träger oder Gehäuse und einer Energiequelle (bei aktiven Transpondern) .Characteristics of the battery pack 10 provided, based on which the battery pack 10 can be identified by an electrical device or a charger 14. For this purpose, the chip 16 is programmed accordingly. In this case, data, such as the voltage at which the charging process is terminated, can be stored. Optionally, additional data, such as the date of manufacture, the batch number, etc., can be stored. The associated electrical appliance or the charger 14 can read the data of the battery pack 10 later from the chip 16 without an additional electrical contact. As a chip 16, for example, a so-called. RFI chip is used. Such an RFI chip forms a kind of transponder. The transponder consists of the chip or microchip, an antenna, a carrier or housing and an energy source (with active transponders).
Dabei gibt es kleine batterielose RFID-Transponder die keine eigene Energieversorgung besitzen. Diese können ihre Versorgungsspannung für den Mikrochip beispielsweise durch Induktion aus den Funksignalen einer Basisstation gewinnen. Ein solcher RFID-Transponder kann hierbei zur Identifizierung eines Akkupacks verwendet werden. RFID- Transponder mit einer eigenen Energieversorgung beziehen die Energie zur Versorgung des Mikrochips aus einer eingebauten Batterie.There are small batteryless RFID transponders that do not have their own power supply. These can gain their supply voltage for the microchip, for example, by induction from the radio signals of a base station. Such an RFID transponder can be used to identify a battery pack. RFID transponders with their own power supply derive the power to supply the microchip from a built-in battery.
Solche RFID-Transponder bzw. RFI-Chips haben den Vorteil, dass kein eigener elektrischer Kontakt an dem Ladegerät 14 oder dem Elektrogerät notwendig ist, um den Chip 16 auszulesen, da hier die Identifizierung über Radiowellen erfolgt. Mit anderen Worten, die RFID ermöglicht berührungslose Lesevorgänge ohne direkten Sichtkontakt.Such RFID transponders or RFI chips have the advantage that no separate electrical contact to the charger 14 or the electrical appliance is necessary to read the chip 16, since the identification is done via radio waves. In other words, the RFID allows non-contact readings without direct visual contact.
Auf dem Chip 16 können dabei auch Parameter, wie beispielsweise die Stromgrenzen, Innenwiderstände, Spannungslevel usw. später abgespeichert oder aktualisiert werden, die zur Zeit als das Elektrogerät oder die Energieversorgungseinrichtung hergestellt wurden noch nicht bekannt waren. Diese Daten können auf den Chip 16 übertragen und korrekt ausgewertet werden. Die Erfindung ist dabei nicht auf die zuvor genannten Daten beschränkt. Grundsätzlich können beliebige Daten auf dem Chip 16 als Identifizierungseinrichtung abgespeichert und später wieder abgerufen werden, je nach Funktion und Einsatzzweck. On the chip 16 also parameters, such as the current limits, internal resistance, voltage levels, etc. can be stored or updated later, which were currently produced as the electrical appliance or the power supply device were not yet known. This data can be transferred to the chip 16 and evaluated correctly. The invention is not limited to the aforementioned data. Basically, any data on the chip 16 can be stored as an identification device and retrieved later, depending on the function and purpose.

Claims

Ansprüche claims
1. Wiederaufladbare Energieversorgungseinrichtung (10) zur Energieversorgung eines Elektrogeräts, dadurch gekennzeichnet, dass die wiederaufladbare Energieversorgungseinrichtung (10) mit wenigstens einem Chip (16) versehen ist, auf dem Daten zur Identifizierung der Energieversorgungseinrichtung (10) abspeicherbar und von dem Elektrogerät und/oder einem Ladegerät (14) auslesbar sind.Anspruch [en] A rechargeable power supply device (10) for powering an electrical device, characterized in that the rechargeable power supply device (10) is provided with at least one chip (16) on which data for identifying the power supply device (10) can be stored and stored by the electrical device and / or a charger (14) are readable.
2. Wiederaufladbare Energieversorgungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass diese Daten wie beispielsweise die Stromgrenzen, Innenwiderstände, Spannungslevel auf dem Chip (16) abspeicherbar und aktualisierbar sind.2. Rechargeable power supply device according to claim 1 or 2, characterized in that these data such as the current limits, internal resistance, voltage levels on the chip (16) can be stored and updated.
3. Wiederaufladbare Energieversorgungseinrichtung nach wenigstens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass weitere zusätzliche Daten wie beispielsweise das Fertigungsdatum und/oder die Chargennummer auf dem Chip (16) abspeicherbar sind.3. Rechargeable power supply device according to at least one of claims 1 to 3, characterized in that further additional data such as the date of manufacture and / or the batch number on the chip (16) can be stored.
4. Wiederaufladbare Energieversorgungseinrichtung nach wenigstens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Chip4. Rechargeable power supply device according to at least one of claims 1 to 3, characterized in that the chip
(16) beispielsweise ein RFI-Chip ist.(16) is an RFI chip, for example.
5. Wiederaufladbare Energieversorgungseinrichtung nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Chip5. Rechargeable power supply device according to at least one of claims 1 to 4, characterized in that the chip
(16) mit seinen darauf gespeicherten Daten aktualsierbar ist, durch erneutes Programmieren des Chips (16) .(16) is updatable with its data stored thereon by reprogramming the chip (16).
6. Wiederaufladbare Energieversorgungseinrichtung nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Chip6. Rechargeable power supply device according to at least one of claims 1 to 5, characterized in that the chip
(16) von dem Elektrogerät bzw. Ladegerät (14) auslesbar ist, ohne dass ein zusätzlicher elektrischer Kontakt an dem Elektrogerät bzw. Ladegerät (14) hierfür notwendig ist. (16) of the electrical appliance or charger (14) can be read without an additional electrical contact to the electrical appliance or charger (14) is necessary for this.
EP08759412A 2007-06-27 2008-05-05 Rechargeable power supply device having an identification device Withdrawn EP2162945A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007029746A DE102007029746A1 (en) 2007-06-27 2007-06-27 Rechargeable energy supply device with an identification device
PCT/EP2008/055457 WO2009000584A1 (en) 2007-06-27 2008-05-05 Rechargeable power supply device having an identification device

Publications (1)

Publication Number Publication Date
EP2162945A1 true EP2162945A1 (en) 2010-03-17

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Application Number Title Priority Date Filing Date
EP08759412A Withdrawn EP2162945A1 (en) 2007-06-27 2008-05-05 Rechargeable power supply device having an identification device

Country Status (5)

Country Link
US (1) US20100181960A1 (en)
EP (1) EP2162945A1 (en)
CN (1) CN101689682A (en)
DE (1) DE102007029746A1 (en)
WO (1) WO2009000584A1 (en)

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EP2701268A1 (en) * 2012-08-24 2014-02-26 Philip Morris Products S.A. Portable electronic system including charging device and method of charging a secondary battery
CN109378541A (en) * 2018-10-13 2019-02-22 东方醒狮新动力电池有限公司 Lithium dynamical battery and its preparation, recovery method based on radio frequency induction

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US5608306A (en) * 1994-03-15 1997-03-04 Ericsson Inc. Rechargeable battery pack with identification circuit, real time clock and authentication capability
US5751134A (en) * 1996-05-16 1998-05-12 Itronix Corporation Gas gauging system and method for monitoring battery capacity for battery powered electronic devices
DE10010980A1 (en) * 2000-03-07 2001-09-13 Bosch Gmbh Robert Energy storage device has data medium component with time counter in addition to data memory area and integrated into energy storage device
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Title
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Also Published As

Publication number Publication date
CN101689682A (en) 2010-03-31
DE102007029746A1 (en) 2009-01-08
US20100181960A1 (en) 2010-07-22
WO2009000584A1 (en) 2008-12-31

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