EP2617096A1 - Electrochemical cell of an accumulator - Google Patents
Electrochemical cell of an accumulatorInfo
- Publication number
- EP2617096A1 EP2617096A1 EP11807855.9A EP11807855A EP2617096A1 EP 2617096 A1 EP2617096 A1 EP 2617096A1 EP 11807855 A EP11807855 A EP 11807855A EP 2617096 A1 EP2617096 A1 EP 2617096A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cell
- conductor track
- track structure
- sensor element
- cell according
- 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- Withdrawn
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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/484—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring electrolyte level, electrolyte density or electrolyte conductivity
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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 electrochemical cells of a rechargeable battery.
- the accumulator may be formed with one or more such cells.
- the cells are lithium-ion cells, also in the various modifications, such as e.g. et al also lithium polymer or lithium-air cells.
- Threshold temperature another internal temperature increase occurs, which can lead to the destruction of the cell and even to a fire.
- a locally limited overheating within the cell which can be called a hot spot is sufficient.
- At least one sensor element is present at an electrochemical cell of an accumulator according to the invention.
- the sensor element (s) is / are arranged integrated therein within the cell and a sensor element is designed as an electrically conductive layer-shaped conductor track structure on a surface of a dielectric laminate formed in the form of a thin film.
- the wiring pattern is also reasonable up to the outer edge arranged for an electrical contact pre see ⁇ ne areas with a further dielectric in the form of a film formed upper laminate, which is arranged on the conductor track structure, sealed fluid-tight if necessary.
- These laminates can be made of plastic or ceramic.
- suitable polymers are polyimide, polyethylene, polypropylene, PTFE,
- the polymers used should be stable up to a temperature of at least 80 ° C and be resistant to the conditions prevailing within an electrochemical cell conditions.
- a suitable ceramic is, for example, ⁇ 1 ⁇ 0 3 , Si 3 N 4 , SiO / AL 2 0 3 or Zr0 2 .
- plastics are suitable because of their flexible deformability, so they can also be used in wound cells.
- a sensor element can be designed as a temperature sensor, a pressure sensor, a force measuring sensor, a sensor for determining the electrical conductivity, the half-cell potential and / or a sensor for measuring the impedance in the cell.
- a usable in the invention sensor element may have a maximum thickness of 150 ⁇ , preferably ⁇ 100 pm. This makes it readily possible to use this within a cell and not negatively affect the actual operation of the cell.
- a sensor element designed as a temperature sensor can be a thermistor or thermocouple.
- a thermistor can be used to measure a temperature-dependent change in the electrical resistance and from this the temperature in the cell can be determined.
- the conductor track structure may be formed with two different metals, which are connected to one another in an electrically conductive manner in one area.
- the Seebeck effect can be exploited.
- exposed areas of the conductor track structure may be formed from the different metals or these areas may be electrically connected to the different metals.
- a sensitive region can be formed on the conductor track structure. This can be meandering, for example.
- at least one region of a sensitive region can be formed with a piezoceramic material, which can be contacted via the electrically conductive interconnect structure.
- At least part of the electrical wiring pattern may be formed with metallic particles contained in a binder.
- the formation of such a conductor track structure can be carried out by applying a thin layer of such a mixture to a surface of a laminate, for example by screen printing, inkjet printing, dispensing, pad printing or aerosol printing.
- the metallic particles in the binder matrix should be distributed therein and contained in a sufficient number that the electrical conductivity is given.
- a binder which may be a suitable polymer, may be cured as a thin layer after application and formation of the wiring pattern. This can also be done after placing the upper laminate covering the conductor track structure. This
- Operation can be carried out with known for the curing of polymers options.
- the various ones may have a good electrical conductivity, such as. Platinum,
- a part of the conductor track structure can also be formed from RuÜ 2 .
- At least part of the strip conductor structure which can form only an electrically conductive connection for external contact, has the possibility of using a laminate which is provided with a correspondingly structured copper layer on the surface of the laminate on which the strip conductor structure is present ,
- an outer envelope of polymeric material such as polymeric film, may be present to provide additional protection.
- Submerge cell which affects at least the respective sensitive area.
- sensor elements may also be present on a surface of an electrode of a cell or within a cell
- the laminate with sensor element (s) should be arranged or formed in the cell such that at least one electrode makes electrically conductive contact with the
- Electrolyte of the cell has, so that electrode (s) and electrolyte are electrically connected to each other.
- Cell deployable sensor elements can be achieved.
- the metal-polymer mixtures that can be used to print the printed circuit allow freely scalable geometries of printed conductor structures to be produced with a small layer thickness. Depending on the composition of the mixture used, different properties that can influence the respective sensor element can be set. Due to the possible use of an electric
- Resistive measurement method can be kept small time constant for the measurement, which lead to a real-time detection of changing temperatures, pressures, forces or conductivities. So can directly influence the control of charging and
- Discharging operations are taken by cells in which the respective electrical charging and discharging can be optimized, which contributes to a shortening of the time required for this, but while the safety is met. In experiments could be charged and discharged with 10% higher electrical currents.
- a single or even several such sensor elements can be integrated into one cell. It can be a very precise measurement at specific locations or a spatially resolved measurement with multiple sensor elements are performed.
- FIG. 1 shows in three views an example of a usable in electrochemical cells sensor element for determining the temperature
- FIG. 2 shows a two-dimensional matrix arrangement of sensor elements
- FIG. 3 shows in two views a further example of a sensor element that can be used in electrochemical cells for determining the temperature
- FIG. 4 shows in three views an example of a sensor element that can be used in electrochemical cells for determining the pressure or for a force measurement
- FIG. 5 shows in two views an example of a usable in electrochemical cells sensor element for determining the electrical conductivity.
- FIG. 1 shows in three views an example of a sensor element designed to determine the temperature.
- a conductor track structure 2 has been printed by screen printing in a sensitive area 2 'on a 25 micron thick film of polyimide as a laminate 1.
- a mixture of one was sufficient viscous polymer in which particles of platinum with an average particle size d50 ⁇ 20 ⁇ m were contained.
- the imprint was a 25 ⁇ thick layer
- Laminate 3 applied.
- the total thickness of the sensor element was ⁇ 90 ⁇ m.
- the two laminates 1 and 3 were connected to one another in a material-locking manner such that a hermetic seal is provided, at least for the sensitive region 2 ', in which the conductor track structure 2 has been meander-shaped.
- the temperature can be determined with the sensor element, since the electrical resistance of the Sen sorelements changes in proportion to the temperature.
- a sensor element designed like this example is flexibly deformable and resistant to the conditions prevailing in electrochemical cells, in particular with regard to chemical resistance and temperature resistance.
- FIG. 2 is intended to make clear that a large number of sensor elements, with conductor track structures 2 formed on a common laminate, are used for the
- Sensor elements can be used. This can be a Measurement be performed with increased spatial resolution.
- the arrangement of interconnect structures 2 can also be different than shown in Figure 2, for example, an irregular arrangement can be selected.
- the accordingly formed on the laminate 1 Lei terbahn Siemensen 2 can be covered with a single gene upper laminate 3 or individualnatibahnstruktu Ren 2 each with an associated laminate and hermetically sealed.
- Figure 3 shows an example of a sensor element, as it can also be used to determine temperatures.
- This is again a lower Lami nat 1 of a polyimide film available.
- a thin film 5 of ceramic is placed on top of this.
- a printed conductor structure 2 as described for example according to Figure 1, printed.
- On the entire surface was then again an upper laminate 3 of a
- Polyimide film applied and at least along the outer edges cohesively and fluid-tightly connected to the laminate 1.
- a matrix arrangement can also be used in cells.
- the functionality corresponds to those explained in the example of FIG.
- FIG. 3 shows a sensor element with which pressures or forces can be determined in three views
- Figure 4 are three views of an example of an insertable in electrochemical cells sensor element for determining pressure and / or acting me shown chanical forces.
- a printed conductor structure 2 in a sensitive region as an interdigitated structure, finger structure or meandering shape is likewise formed as in the example according to FIG.
- ⁇ On the wiring pattern 2 in the sensitive region 2 'is similar been ⁇ defines a platelet-shaped electrically conductive element 4 (in the form of a graphite foil GDL. The whole is again covered with an upper laminate 3 as a polyimide film and it is obtained a hermetic seal.
- the plate-shaped element 4 is pressed against the conductor track structure 2.
- the plate-shaped element 4 is pressed against the individual structural elements of the printed conductor structure 2, as a result of which the electrical conductivity or electrical resistance changes as a function of the pressure or the force which can be used as a measure of pressure or force ,
- the sensor element again had a total thickness ⁇ 90 ⁇ .
- FIG. 5 shows in two views an example of a sensor element that can be used in electrochemical cells for determining the electrical conductivity, which can also be used as a reference sensor.
- the laminate 1 which was again a polyimide film with a thickness of 25 ⁇ and with a structured copper layer (thickness 25 ⁇ ) for electrical connection contacts 2 '' was again with a printed circuit trace structure 2 in the form of several spaced apart parallel and provided the same length strip. These form electrodes. Except for at the outer edge left open areas for an electric ontakttechnik these were again covered with the upper laminate 3, which was circumferentially connected to the laminate 1 cohesively and fluid-tight at the outer edge.
- FIG. 4 shows a 4-electrode arrangement with which the electrical conductivity of the electrolyte of the cell can be determined.
- the electrical impedance of the respective cell can be determined via the three other electrodes.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010046307.8A DE102010046307B4 (en) | 2010-09-15 | 2010-09-15 | Electrochemical cell of a rechargeable battery |
PCT/DE2011/001745 WO2012041278A1 (en) | 2010-09-15 | 2011-09-14 | Electrochemical cell of an accumulator |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2617096A1 true EP2617096A1 (en) | 2013-07-24 |
Family
ID=45476245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11807855.9A Withdrawn EP2617096A1 (en) | 2010-09-15 | 2011-09-14 | Electrochemical cell of an accumulator |
Country Status (4)
Country | Link |
---|---|
US (1) | US9391348B2 (en) |
EP (1) | EP2617096A1 (en) |
DE (1) | DE102010046307B4 (en) |
WO (1) | WO2012041278A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012208509A1 (en) * | 2012-05-22 | 2013-11-28 | Robert Bosch Gmbh | Apparatus for determining a state quantity of a cell for converting chemical energy into electrical energy, cell, cell module and method for determining a state quantity of a cell |
DE102012209709B4 (en) | 2012-06-11 | 2021-10-07 | Robert Bosch Gmbh | Protection device for an electronic component, electrical circuit, electrochemical energy store, method for producing an electrical circuit and use of a flexible sheath |
US10107867B2 (en) | 2013-11-12 | 2018-10-23 | Infineon Technologies Ag | Sensor arrangement, battery cell and energy system |
DE102014201162A1 (en) * | 2014-01-23 | 2015-07-23 | Robert Bosch Gmbh | Battery cell, battery pack and transport container |
DE102015201532A1 (en) * | 2015-01-29 | 2016-08-04 | Robert Bosch Gmbh | Separating membrane for creating a fluid-tight interior for an electrical component, electrical circuit, electrochemical energy storage and method for producing an electrical circuit |
JP6612720B2 (en) * | 2016-11-28 | 2019-11-27 | 本田技研工業株式会社 | Secondary battery |
DE102017206663A1 (en) * | 2017-04-20 | 2018-10-25 | Robert Bosch Gmbh | Battery pack and electric vehicle |
DE102018209324A1 (en) | 2018-06-12 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring of batteries |
TWI651884B (en) * | 2018-07-20 | 2019-02-21 | 元智大學 | Proton battery manufacturing method and proton battery module |
US20200076016A1 (en) * | 2018-09-04 | 2020-03-05 | Hutchinson Technology Incorporated | Sensored Battery Pouch |
US11322806B2 (en) * | 2019-09-13 | 2022-05-03 | Hutchinson Technology Incorporated | Sensored battery electrode |
JP2021166213A (en) * | 2020-04-06 | 2021-10-14 | 日亜化学工業株式会社 | Light emitting device or optical member |
DE102021124057A1 (en) | 2021-09-17 | 2023-03-23 | Volkswagen Aktiengesellschaft | battery cell |
DE102022124636A1 (en) | 2022-09-26 | 2024-03-28 | Audi Aktiengesellschaft | Sensor device for a composite component, underrun protection with such a sensor device and method for its production |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3733193C1 (en) * | 1987-10-01 | 1988-11-24 | Bosch Gmbh Robert | NTC temperature sensor and process for the production of NTC temperature sensor elements |
JPH1116610A (en) * | 1997-06-23 | 1999-01-22 | Yuasa Corp | Storage battery |
JP2002313431A (en) * | 2001-04-11 | 2002-10-25 | Mitsubishi Materials Corp | Nonaqueous electrolyte secondary battery |
KR100801635B1 (en) | 2004-11-02 | 2008-02-05 | 주식회사 엘지화학 | Member for Measurement of Cell Voltage And Temperature in Battery Pack |
JP4569640B2 (en) | 2008-01-31 | 2010-10-27 | 株式会社デンソー | Battery temperature control device |
DE102008057710A1 (en) * | 2008-11-17 | 2010-05-27 | Li-Tec Battery Gmbh | According to galvanic principles operating electrical device, such as a lithium-ion battery, with a temperature sensor |
US9054397B2 (en) * | 2009-08-11 | 2015-06-09 | Amphenol Thermometrics, Inc. | Battery cell with integrated sensing platform |
US8636407B2 (en) * | 2010-02-17 | 2014-01-28 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Wireless temperature sensor having no electrical connections and sensing method for use therewith |
-
2010
- 2010-09-15 DE DE102010046307.8A patent/DE102010046307B4/en not_active Expired - Fee Related
-
2011
- 2011-09-14 WO PCT/DE2011/001745 patent/WO2012041278A1/en active Application Filing
- 2011-09-14 US US13/823,884 patent/US9391348B2/en active Active
- 2011-09-14 EP EP11807855.9A patent/EP2617096A1/en not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2012041278A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102010046307B4 (en) | 2018-04-12 |
DE102010046307A1 (en) | 2012-03-15 |
WO2012041278A1 (en) | 2012-04-05 |
US9391348B2 (en) | 2016-07-12 |
US20130236755A1 (en) | 2013-09-12 |
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Legal Events
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17Q | First examination report despatched |
Effective date: 20150416 |
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INTG | Intention to grant announced |
Effective date: 20181219 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20190430 |