WO2014114331A1 - A method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor - Google Patents
A method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor Download PDFInfo
- Publication number
- WO2014114331A1 WO2014114331A1 PCT/EP2013/051212 EP2013051212W WO2014114331A1 WO 2014114331 A1 WO2014114331 A1 WO 2014114331A1 EP 2013051212 W EP2013051212 W EP 2013051212W WO 2014114331 A1 WO2014114331 A1 WO 2014114331A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lithium battery
- depassivation
- temperature
- arrangement
- current
- Prior art date
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
- H01M10/425—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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
-
- 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
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
-
- 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
-
- 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
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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 generally relates to batteries, and in particularly to
- a passivation oxide is typically growing internally on electrodes in the battery. This oxide will at least result in a voltage drop when the battery starts to be used. With a fully developed oxide layer the battery is destroyed.
- a lithium battery may e.g. be loaded periodically with a small current.
- the life time of a battery periodically loaded with a small depassivation current may e.g. be reduced by 10 % due to this extra loading.
- An object of the present invention is to improve battery lifetime of a lithium battery. This object is according to the present invention attained by a method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor, as defined by the appended claims.
- a method for depassivation of a lithium battery comprising the steps of: measuring a temperature at the lithium battery, selecting a depassivation current in dependence of the measured temperature, and depassivating the lithium battery with the selected depassivation current, battery lifetime is generally improved for a lithium battery by not having a maximum depassivation current irrespective of current temperature at the battery.
- the steps of measuring, selecting and depassivating are preferably performed repeatedly to adapt the depassivation current to changing temperature.
- a lithium battery back-up arrangement comprising temperature measuring means and a lithium battery, wherein the lithium battery back-up arrangement is configured to depassivate the lithium battery with a depassivation current dependent on a temperature at the lithium battery measured by the temperature measuring means, battery lifetime is generally improved for a lithium battery by not having a maximum depassivation current irrespective of current temperature at the battery.
- a robot system is also provided.
- Fig. 1 shows a flowchart for a method according to the present invention.
- Fig. 2 schematically illustrates a robot system according to the present invention.
- the system for depassivation of a lithium battery 3 comprises a lithium battery back-up arrangement having temperature measuring means 4 and a lithium battery 3.
- the lithium battery back-up arrangement is configured to depassivate the lithium battery 3 with a depassivation current dependent on a temperature at the lithium battery 3 measured by the temperature measuring means 4.
- the buildup of oxide is strongly temperature dependent with increased buildup at high temperatures.
- room temperature (20 °C) no depassivation current is needed, and a great improvement of battery life is provided by having no depassivation current as long as the temperature at the lithium battery is at room temperature.
- Typical depassivation current for a small battery of 2 Ah is 100 ⁇ at 70 °C, and needs to be increased to 150 ⁇ at 85 °C.
- the required depassivation current depends on battery size and the type of lithium battery.
- a robot system typically comprises a robot 1 and a robot controller 2.
- the robot controller 2 comprises temperature measuring means 4 consisting of a micro controller having an internal temperature measurement circuit, which can be used to provide a good value of the battery temperature for
- a robot system has been detailed as an example of utilization for a lithium battery back-up arrangement, but a lithium battery back-up arrangement can be utilized in other systems as well.
- the method for depassivation of a lithium battery comprises the steps of: measuring 10 a temperature at the lithium battery, selecting n a depassivation current in dependence of the measured temperature, and depassivating 12 the lithium battery with the selected depassivation current.
- the steps of measuring 10, selecting 11 and depassivating 12 are preferably performed repeatedly.
- the depassivation current can be selected from a table, and is typically increased for increased temperature.
Abstract
The present invention relates to a method and a system for depassivation of a lithium battery(3), comprising the steps of: measuring (10) a temperature at the lithium battery(3), selecting (11) a depassivation current in dependence of the measured temperature, and depassivating (12) the lithium battery (3) with the selected depassivation current.
Description
A METHOD FOR DEPASSIVATION OF LITHIUM BATTERIES, A BATTERY BACK-UP ARRANGEMENT AND A ROBOT SYSTEM
THEREFOR
TECHNICAL FIELD
The invention generally relates to batteries, and in particularly to
depassivation of lithium batteries.
BACKGROUND
When a lithium battery is not in use, a passivation oxide is typically growing internally on electrodes in the battery. This oxide will at least result in a voltage drop when the battery starts to be used. With a fully developed oxide layer the battery is destroyed.
To prevent build up of oxide in a lithium battery, and to remove built up of oxide on electrodes thereof, a lithium battery may e.g. be loaded periodically with a small current. The life time of a battery periodically loaded with a small depassivation current may e.g. be reduced by 10 % due to this extra loading.
SUMMARY
An object of the present invention is to improve battery lifetime of a lithium battery. This object is according to the present invention attained by a method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor, as defined by the appended claims.
By providing a method for depassivation of a lithium battery, comprising the steps of: measuring a temperature at the lithium battery, selecting a depassivation current in dependence of the measured temperature, and depassivating the lithium battery with the selected depassivation current, battery lifetime is generally improved for a lithium battery by not having a maximum depassivation current irrespective of current temperature at the battery.
The steps of measuring, selecting and depassivating are preferably performed repeatedly to adapt the depassivation current to changing temperature.
By providing a lithium battery back-up arrangement comprising temperature measuring means and a lithium battery, wherein the lithium battery back-up arrangement is configured to depassivate the lithium battery with a depassivation current dependent on a temperature at the lithium battery measured by the temperature measuring means, battery lifetime is generally improved for a lithium battery by not having a maximum depassivation current irrespective of current temperature at the battery. A robot system is also provided.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the element, apparatus, component, means, step, etc." are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is now described, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 shows a flowchart for a method according to the present invention.
Fig. 2 schematically illustrates a robot system according to the present invention.
DETAILED DESCRIPTION
The invention will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth
herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout the description. A method and system for depassivation of a lithium battery will now be described with reference to Figs, ι and 2.
The system for depassivation of a lithium battery 3 comprises a lithium battery back-up arrangement having temperature measuring means 4 and a lithium battery 3. The lithium battery back-up arrangement is configured to depassivate the lithium battery 3 with a depassivation current dependent on a temperature at the lithium battery 3 measured by the temperature measuring means 4.
The buildup of oxide is strongly temperature dependent with increased buildup at high temperatures. At room temperature (20 °C) no depassivation current is needed, and a great improvement of battery life is provided by having no depassivation current as long as the temperature at the lithium battery is at room temperature. Typical depassivation current for a small battery of 2 Ah is 100 μΑ at 70 °C, and needs to be increased to 150 μΑ at 85 °C. The required depassivation current depends on battery size and the type of lithium battery.
A robot system typically comprises a robot 1 and a robot controller 2. The robot controller 2 comprises temperature measuring means 4 consisting of a micro controller having an internal temperature measurement circuit, which can be used to provide a good value of the battery temperature for
temperature measuring means of the lithium battery back-up arrangement.
For systems working in extremely high temperature a high depassivation current will reduce the battery lifetime, but the battery will not be destroyed directly due to the oxide build-up. The temperature dependent depassivation current will thus result in a more reliably system.
A robot system has been detailed as an example of utilization for a lithium battery back-up arrangement, but a lithium battery back-up arrangement can be utilized in other systems as well.
The method for depassivation of a lithium battery, comprises the steps of: measuring 10 a temperature at the lithium battery, selecting n a depassivation current in dependence of the measured temperature, and depassivating 12 the lithium battery with the selected depassivation current.
The steps of measuring 10, selecting 11 and depassivating 12 are preferably performed repeatedly.
The depassivation current can be selected from a table, and is typically increased for increased temperature.
The invention has mainly been described above with reference to a few embodiments. However, as is readily appreciated by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the invention, as defined by the appended patent claims.
Claims
1. A method for depassivation of a lithium battery, comprising the steps of: measuring (10) a temperature at said lithium battery, selecting (n) a depassivation current in dependence of the measured temperature, and depassivating (n) said lithium battery with the selected
depassivation current.
2. The method as claimed in claim l, wherein said steps of measuring, selecting and depassivating are performed repeatedly.
3. The method as claimed in any of claims 1-2, wherein said depassivation current is selected from a table.
4. The method as claimed in any of claims 1-3, wherein said depassivation current is increased for increased temperature.
5. A lithium battery back-up arrangement comprising temperature
measuring means (4) and a lithium battery (3), wherein said lithium battery back-up arrangement is configured to depassivate said lithium battery (3) with a depassivation current dependent on a temperature at said lithium battery (3) measured by said
temperature measuring means (4).
6. A robot system comprising a lithium battery back-up arrangement according to claim 5 and a robot (1) connected to said lithium battery back-up arrangement.
7. The robot system according to claim 6, comprising a robot controller (2) including a micro controller having a temperature measuring circuit providing said temperature at said lithium batter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/051212 WO2014114331A1 (en) | 2013-01-23 | 2013-01-23 | A method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/051212 WO2014114331A1 (en) | 2013-01-23 | 2013-01-23 | A method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014114331A1 true WO2014114331A1 (en) | 2014-07-31 |
Family
ID=47603721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/051212 WO2014114331A1 (en) | 2013-01-23 | 2013-01-23 | A method for depassivation of lithium batteries, a battery back-up arrangement and a robot system therefor |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2014114331A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020180318A1 (en) * | 2019-03-06 | 2020-09-10 | Johnson Controls Fire Protection LP | Lithium battery activation and long-term maintenance |
| US11112460B2 (en) | 2019-03-06 | 2021-09-07 | Johnson Controls Fire Protection LP | Lithium battery passivation detection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4725784A (en) * | 1983-09-16 | 1988-02-16 | Ramot University Authority For Applied Research & Industrial Development Ltd. | Method and apparatus for determining the state-of-charge of batteries particularly lithium batteries |
| WO1998008265A1 (en) * | 1996-08-19 | 1998-02-26 | Siemens Ag Österreich | Method and circuit for depassivation of a battery |
| US20120280830A1 (en) * | 2011-05-05 | 2012-11-08 | Sensus Usa Inc. | Method and Apparatus for Reducing Battery Passivation in a Meter-Reading Module |
-
2013
- 2013-01-23 WO PCT/EP2013/051212 patent/WO2014114331A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4725784A (en) * | 1983-09-16 | 1988-02-16 | Ramot University Authority For Applied Research & Industrial Development Ltd. | Method and apparatus for determining the state-of-charge of batteries particularly lithium batteries |
| WO1998008265A1 (en) * | 1996-08-19 | 1998-02-26 | Siemens Ag Österreich | Method and circuit for depassivation of a battery |
| US20120280830A1 (en) * | 2011-05-05 | 2012-11-08 | Sensus Usa Inc. | Method and Apparatus for Reducing Battery Passivation in a Meter-Reading Module |
Non-Patent Citations (1)
| Title |
|---|
| B. V. RATNAKUMAR ET AL: "Potentiostatic Depassivation of Lithium-Sulfur Dioxide Batteries on Mars Exploration Rovers", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 154, no. 7, 1 January 2007 (2007-01-01), pages A715, XP055075915, ISSN: 0013-4651, DOI: 10.1149/1.2737663 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020180318A1 (en) * | 2019-03-06 | 2020-09-10 | Johnson Controls Fire Protection LP | Lithium battery activation and long-term maintenance |
| US11112460B2 (en) | 2019-03-06 | 2021-09-07 | Johnson Controls Fire Protection LP | Lithium battery passivation detection |
| US11245136B2 (en) | 2019-03-06 | 2022-02-08 | Johnson Controls Fire Protection LP | Lithium battery activation and long-term maintenance |
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