DE3340882C1 - Device for temperature monitoring and reconditioning of batteries consisting of electrochemical individual cells - Google Patents
Device for temperature monitoring and reconditioning of batteries consisting of electrochemical individual cellsInfo
- Publication number
- DE3340882C1 DE3340882C1 DE3340882A DE3340882A DE3340882C1 DE 3340882 C1 DE3340882 C1 DE 3340882C1 DE 3340882 A DE3340882 A DE 3340882A DE 3340882 A DE3340882 A DE 3340882A DE 3340882 C1 DE3340882 C1 DE 3340882C1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- battery
- reconditioning
- cells
- batteries
- 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.)
- Expired
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
- H01M10/44—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
Description
der Typ *11 der Firma Siemens aus dem Material P 270#*l 1.the type * 11 from Siemens made of the material P 270 # * l 1.
Während des Betriebes der Batterie können zwei Zustände unterschieden werden, nämlich Ladung und Entladung. A distinction can be made between two states during operation of the battery be, namely charge and discharge.
Ladung: Die Ladung der einzelnen Zellen durch eine externe Spannungsquelle erfolgt etwa im Temperaturbereich von 0°C +5". Der parallel geschaltete Kaltleiter wirkt als Ballastwiderstand und symmetriert die Einzelzellen in Richtung gleichmäßigerer Aufteilung der Ladeleistung. Steigt die Temperatur der Zellen während der Ladung, so erhöht sich auch der Widerstandswert des Kaltleiters. Als Folge davon werden die Zellen durch die Kaltleiter entsprechend geringer aufgeheizt. Charge: The charge of the individual cells by an external voltage source takes place in the temperature range of 0 ° C +5 ". The PTC thermistor connected in parallel acts as a ballast resistor and balances the individual cells in the direction of more uniformity Distribution of the charging power. If the temperature of the cells rises during charging, this also increases the resistance of the PTC thermistor. As a result of this will be the cells are heated accordingly less by the PTC thermistor.
Die Kaltleiter wirken dem Temperaturanstieg der Zellen demgemäß entgegen.The PTC thermistors counteract the rise in temperature of the cells.
Entladung: Entlädt sich die Batterie z. B. durch eine angeschlossene Last, so steigt die Temperatur der Einzelzellen durch die Eigenerwärmung aufgrund der inneren Verluste. Der Leitwert der Kaltleiter sinkt und der Parallelverlust über die Kaltleiter geht erheblich zurück. Discharge: If the battery discharges, e.g. B. by an attached Load, the temperature of the individual cells rises due to the self-heating of internal losses. The conductance of the PTC thermistor drops and the parallel loss over the PTC thermistor goes back considerably.
Der Leitwert der Kaltleiter kann hierbei um den Faktor 20 absinken, je nach dem betrachteten Temperaturbereich. Auch in diesem Falle wirkt die Heizleistung des Kaltleiters der Eigenerwärmung der Einzelzellen entgegen, so daß auch hier eine Temperatursteuerung vorliegt.The conductance of the PTC thermistor can decrease by a factor of 20, depending on the temperature range considered. The heating output is also effective in this case of the PTC thermistor against the self-heating of the individual cells, so that here too a Temperature control is present.
Sinkt die Temperatur der Einzelzelle während des Betriebes, z. B. durch Einfluß der Umgebungstemperatur auf die Zellen, so steigt der Leitwert des Kaltleiters und die Zelle wird jetzt stärker beheizt. If the temperature of the single cell falls during operation, e.g. B. if the ambient temperature affects the cells, the conductance of the increases PTC thermistor and the cell is now heated more strongly.
Zur Vorbereitung der Rekonditionierung der Batterien wird zur Tiefentladung der Einzelzellen die Batterie sich selbst überlassen. Ausgehend von ca. 25 bis 300C bei der Entladung entladen sich die Einzelzellen über ihre parallel geschalteten Kaltleiter. Ein Absinken der Temperatur jeder Zelle wird durch das gleichzeitige Ansteigen der Kaltleiter-Heizleistung zunächst fast ausgesteuert; die elektrische Leistung hierfür wird der Zelle entnommen, die sich dabei progressiv entleert. Im Endzustand sind die Einzelzellen elektrisch und thermisch entladen und mit dem nunmehr relativ großen Leitwert des Kaltleiters abgeschlossen. Hiermit liegen ideale Bedingungen für die Rekonditionierung der Batteriekapazität vor. To prepare for the reconditioning of the batteries, a deep discharge of the individual cells leave the battery to its own devices. Starting from approx. 25 to 300C When discharging, the individual cells discharge themselves via their parallel-connected PTC thermistor. A decrease in the temperature of each cell is caused by the simultaneous The increase in the PTC thermistor heating power is initially almost controlled; the electric Power for this is taken from the cell, which is progressively emptied. in the In the final state, the individual cells are electrically and thermally discharged and with that now relatively large conductance of the PTC thermistor completed. This creates ideal conditions for reconditioning the battery capacity.
Die mit der Erfindung erzielbaren Vorteile lassen sich wie folgt zusammenfassen: 1. Die Temperatur der Einzelzellen der Batterie wird durch die Abstimmung zwischen der Wärmekapazität der Einzelzelle und der temperaturabhängigen Heizleistung des Kaltleiters in Richtung auf eine gleichmäßige Temperaturverteilung über alle Einzelzellen in dem dicht verpackten Batterieverband gesteuert; 2. Es wird ein temperaturabhängiger Entladewiderstand geschaffen, der elektrisch parallel zu den Einzelzellen geschaltet ist und einen kleinen Leitwert, d. h. auch einen geringen Verlust, bei der Betriebstemperatur der Batterie von z. B. 250C und einen wesentlich, z. B. um den Faktor 25 vergrößerten Leitwert bei der tieferen Rekonditionierungstemperatur von z. B. - 100C aufweist; 3. Durch die Einzelzellen-Vorbelastung durch den parallel geschalteten Kaltleiter wird die Ladung symmetriert bei gleichzeitiger Reduzierung des verbleibenden Ladestromes für alle Einzelzellen bei tiefen Temperaturen; hier kann z. B. Wasserstoffgasung, insbesondere in Nickel-Kadmium-Zellen verhindert werden. The advantages that can be achieved with the invention are as follows To summarize: 1. The temperature of the individual cells of the battery is determined by the vote between the heat capacity of the single cell and the temperature-dependent heating output of the PTC thermistor in the direction of a uniform temperature distribution over all Controlled individual cells in the tightly packed battery bank; 2. It becomes a temperature-dependent one Discharge resistor created, which is electrically connected in parallel to the individual cells and a small conductance, d. H. also a small loss, at the operating temperature the battery of z. B. 250C and one essential, e.g. B. enlarged by a factor of 25 Conductance at the lower reconditioning temperature of z. B. - 100C; 3. Due to the single cell preload from the PTC thermistor connected in parallel the charge is balanced while the remaining charge current is reduced at the same time for all single cells at low temperatures; here z. B. hydrogen gassing, especially in nickel-cadmium cells.
Die Erfindung ist in einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. In der Zeichnung stellen dar: F i g. 1 eine erfindungsgemäße Verbindung einer elektrochemischen Einzelzelle einer Batterie mit einem Kaltleiter; F i g. 2 den Verlauf des Widerstandswertes eines Kaltleiters über der Temperatur in einfach-logarithmischer Darstellung. The invention is based on the drawing in an exemplary embodiment explained in more detail. The drawing shows: F i g. 1 a compound according to the invention an electrochemical single cell of a battery with a PTC thermistor; F i g. 2 the curve of the resistance value of a PTC thermistor versus temperature in single-logarithmic form Depiction.
Eine hier nicht näher dargestellte Batterie für die Verwendung in einem Erdsatelliten ist aus einer dichten Packung von elektro-chemischen Einzelzellen, z. B. Nikkel-Kadmium-Zellen 1 zusammengesetzt. In F i g. 1 sind lediglich schematisch die beiden Elektroden 2a und 2b, das Gehäuse 3 der Einzelzelle 1 und die Zellenanschlüsse 4a und 4b dargestellt. Die Zellenanschlüsse 4a und 4b sind mit weiteren gleichartigen Einzelzellen der Batterie verbunden. Die hier nicht dargestellten Batterieanschlüsse führen zu einer nicht dargestellten Last. A battery not shown here for use in an earth satellite is made up of a dense packing of electro-chemical single cells, z. B. nickel-cadmium cells 1 composed. In Fig. 1 are only schematic the two electrodes 2a and 2b, the housing 3 of the single cell 1 and the cell connections 4a and 4b shown. The cell connections 4a and 4b are similar to others Single cells of the battery connected. The battery connections not shown here lead to a load not shown.
Auf das Gehäuse 3 jeder Einzelzelle 1 ist ein Kaltleiter 5 mit Hilfe eines gut wärmeleitenden Klebers 6 aufgeklebt, so daß zwischen dem Gehäuse 3 und dem Kaltleiter 5 ein guter thermischer Kontakt besteht. Der Kaltleiter 5 ist zwischen den Anschlüssen 4a und 4b der Einzelzelle elektrisch parallel geschaltet. A PTC thermistor 5 is attached to the housing 3 of each individual cell 1 with the aid a highly thermally conductive adhesive 6 glued so that between the housing 3 and the PTC thermistor 5 is in good thermal contact. The PTC thermistor 5 is between the connections 4a and 4b of the single cell are electrically connected in parallel.
Mit den Zellenanschlüssen 4a bzw. 4b sind Anschlüsse 7a bzw. 7b für eine externe, hier nicht dargestellte Spannungsquelle verbunden. With the cell connections 4a and 4b are connections 7a and 7b for an external voltage source, not shown here, is connected.
In F i g. 2 ist der Verlauf des Widerstandswertes für den Kaltleiter 5 über die Temperatur TKL des Kaltleiters 5 in einfach-logarithmischer Darstellung aufgetragen. In Fig. 2 is the course of the resistance value for the PTC thermistor 5 over the temperature TKL of the PTC thermistor 5 in a single-logarithmic representation applied.
Auf der Temperaturkoordinate ist der Bereich B der Temperatur der Einzelzellen 1 aufgetragen. Dieser Bereich erstreckt sich von etwa - 100C bis etwa 25#C. Der Widerstandswert RKL erhöht sich in diesem Betriebstemperaturbereich von etwa 800 Ohm bei - 10"C auf einige 104 Ohm bei der oberen Temperaturgrenze des Bereiches B. Die Heizleistung des Kaltleiters 5 bei der Zellenspannung wird durch entsprechende Dimensionierung des Kaltleiters unter Berücksichtigung der thermischen Kontaktfläche über den Kleber 6 zu dem Gehäuse 3 so auf die Wärmekapazität der Einzelzelle 1 abgestimmt, daß der Erwärmung bzw. Abkühlung der Einzelzelle 1 während des Betriebes durch eine verminderte bzw. vergrößerte Heizleistung des Kaltleiters 5 entgegengewirkt wird, um während des Betriebes der Batterie die Temperatur der Einzelzellen zu stabilisieren und über den Verband der dicht gepackten Einzelzellen gleichmäßig zu halten.On the temperature coordinate, the area B of the temperature is the Single cells 1 applied. This range extends from about -100C to about 25 # C. The resistance value RKL increases in this operating temperature range from about 800 ohms at -10 "C to a few 104 ohms at the upper temperature limit of the range B. The heating power of the PTC thermistor 5 at the cell voltage is determined by appropriate Dimensioning of the PTC thermistor taking into account the thermal contact area matched to the heat capacity of the individual cell 1 via the adhesive 6 to the housing 3, that the heating or cooling of the single cell 1 during operation by a reduced or increased heating power of the PTC thermistor 5 is counteracted, to stabilize the temperature of the individual cells while the battery is in operation and to hold it evenly over the association of the tightly packed individual cells.
Soll die Batterie rekonditioniert werden, d. h. die Einzelzellen tiefentladen und anschließend neu geladen werden, dann werden die einzelnen Zellen der Batterie sich selbst überlassen, so daß sich die Einzelzellen 1 über den parallel geschalteten Kaltleiter 5 entladen. Ein Absinken der Temperatur der Einzelzellen wird durch das gleichzeitige Ansteigen der Kaltleiter-Heizleistung zunächst annähernd ausgeglichen. Bei progressivem Entladen der Einzelzellen sinkt schließlich die Temperatur der Zellen auf den untersten Wert des Bereiches B, d. h. Should the battery be reconditioned, i. H. the single cells deeply discharged and then reloaded, then the individual cells the battery left to itself, so that the individual cells 1 on the parallel switched PTC thermistor 5 discharged. A drop in the temperature of the individual cells is initially approximately due to the simultaneous increase in the PTC thermistor heating power balanced. With progressive discharge of the individual cells, the temperature finally drops of the cells to the lowest value of the range B, d. H.
etwa auf - 100C. Die Einzelzellen sind dann vollständig entladen und durch den Kaltleiter mit jetzt relativ geringem Widerstandswert parallel überbrückt. Die Einzelzellen 1 können jetzt durch die externe Spannungsquelle über die Anschlüsse 7a, 7b neu geladen werden.around - 100C. The individual cells are then completely discharged and bridged in parallel by the PTC thermistor, which now has a relatively low resistance value. The individual cells 1 can now through the external voltage source via the connections 7a, 7b are reloaded.
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Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3340882A DE3340882C1 (en) | 1983-11-11 | 1983-11-11 | Device for temperature monitoring and reconditioning of batteries consisting of electrochemical individual cells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3340882A DE3340882C1 (en) | 1983-11-11 | 1983-11-11 | Device for temperature monitoring and reconditioning of batteries consisting of electrochemical individual cells |
Publications (1)
Publication Number | Publication Date |
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DE3340882C1 true DE3340882C1 (en) | 1985-06-27 |
Family
ID=6214118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3340882A Expired DE3340882C1 (en) | 1983-11-11 | 1983-11-11 | Device for temperature monitoring and reconditioning of batteries consisting of electrochemical individual cells |
Country Status (1)
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DE (1) | DE3340882C1 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987001549A1 (en) * | 1985-08-26 | 1987-03-12 | Odd Stephan Irgens | A device for heating with energy saving in cars and boats |
DE3620041A1 (en) * | 1986-06-14 | 1987-12-17 | Licentia Gmbh | Charging arrangement for accumulators |
WO1989009497A1 (en) * | 1988-03-25 | 1989-10-05 | The Secretary Of State For Defence In Her Britanni | Improvements in thermal batteries |
EP0429930A2 (en) * | 1989-11-17 | 1991-06-05 | Asea Brown Boveri Aktiengesellschaft | Protection device for high temperature batteries |
DE4142628C1 (en) * | 1991-12-21 | 1993-05-06 | Dieter Braun | |
DE4409736A1 (en) * | 1994-03-22 | 1995-09-28 | Braun Ag | Method and device for maintaining batteries permanently installed in a device |
EP1906470A2 (en) | 2006-05-31 | 2008-04-02 | Ingersoll-Rand Company | Cordless power tool battery and charging system therefore |
GB2450794A (en) * | 2007-07-06 | 2009-01-07 | Bosch Gmbh Robert | Battery with temperature-dependant element |
DE102008038740A1 (en) | 2008-08-12 | 2010-02-18 | Nordex Energy Gmbh | Wind turbine has rotor hub with multiple rotor blades, where energy storage is arranged in rotor hub for supplying electrical power to rotor blade adjustment angle drives |
US7863857B2 (en) | 2006-05-31 | 2011-01-04 | Ingersoll-Rand Company | Cordless power tool battery and charging system therefore |
US8012618B2 (en) | 2007-07-06 | 2011-09-06 | Robert Bosch Gmbh | Rechargeable battery and battery pack |
WO2012167971A1 (en) * | 2011-06-09 | 2012-12-13 | Robert Bosch Gmbh | Energy storage device, system with energy storage device and method for generating a supply voltage of an energy storage device |
DE102013214448A1 (en) * | 2013-07-24 | 2015-01-29 | Robert Bosch Gmbh | Method and device for detecting a temperature increase in a plurality of electrochemical storage cells |
US9751427B2 (en) | 2014-09-03 | 2017-09-05 | Ford Global Technologies, Llc | Vehicle traction battery thermal conditioning |
US10236544B2 (en) | 2014-04-10 | 2019-03-19 | Illinois Tool Works Inc. | Heater for electric vehicle batteries |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1148287B (en) * | 1960-05-21 | 1963-05-09 | Boelkow Entwicklungen Kg | Battery made of gas-tight accumulators in the shape of a button with a device for heating the individual cells |
DE1222154B (en) * | 1960-11-15 | 1966-08-04 | Harold Martin Harmer | Power supply device for charging accumulators |
DE1671910A1 (en) * | 1966-12-28 | 1971-10-21 | Accumulateurs Fixes | Device for the measured charging of accumulator batteries |
DE2159875A1 (en) * | 1971-12-02 | 1973-06-20 | Sonnenschein Accumulatoren | CHARGING DEVICE FOR VEHICLE BATTERIES |
-
1983
- 1983-11-11 DE DE3340882A patent/DE3340882C1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1148287B (en) * | 1960-05-21 | 1963-05-09 | Boelkow Entwicklungen Kg | Battery made of gas-tight accumulators in the shape of a button with a device for heating the individual cells |
DE1222154B (en) * | 1960-11-15 | 1966-08-04 | Harold Martin Harmer | Power supply device for charging accumulators |
DE1671910A1 (en) * | 1966-12-28 | 1971-10-21 | Accumulateurs Fixes | Device for the measured charging of accumulator batteries |
DE2159875A1 (en) * | 1971-12-02 | 1973-06-20 | Sonnenschein Accumulatoren | CHARGING DEVICE FOR VEHICLE BATTERIES |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987001549A1 (en) * | 1985-08-26 | 1987-03-12 | Odd Stephan Irgens | A device for heating with energy saving in cars and boats |
DE3620041A1 (en) * | 1986-06-14 | 1987-12-17 | Licentia Gmbh | Charging arrangement for accumulators |
WO1989009497A1 (en) * | 1988-03-25 | 1989-10-05 | The Secretary Of State For Defence In Her Britanni | Improvements in thermal batteries |
GB2234625A (en) * | 1988-03-25 | 1991-02-06 | Secr Defence | Improvements in thermal batteries |
EP0429930A2 (en) * | 1989-11-17 | 1991-06-05 | Asea Brown Boveri Aktiengesellschaft | Protection device for high temperature batteries |
EP0429930A3 (en) * | 1989-11-17 | 1993-10-20 | Asea Brown Boveri | Protection device for high temperature batteries |
DE4142628C1 (en) * | 1991-12-21 | 1993-05-06 | Dieter Braun | |
DE4409736A1 (en) * | 1994-03-22 | 1995-09-28 | Braun Ag | Method and device for maintaining batteries permanently installed in a device |
US5793188A (en) * | 1994-03-22 | 1998-08-11 | Braun Aktiengesellschaft | Method of conditioning accumulators fixedly mounted in an apparatus and a device therefor |
EP1906470A3 (en) * | 2006-05-31 | 2008-10-08 | Ingersoll Rand Co | Cordless power tool battery and charging system therefore |
EP1906470A2 (en) | 2006-05-31 | 2008-04-02 | Ingersoll-Rand Company | Cordless power tool battery and charging system therefore |
US7863857B2 (en) | 2006-05-31 | 2011-01-04 | Ingersoll-Rand Company | Cordless power tool battery and charging system therefore |
US8299749B2 (en) | 2006-05-31 | 2012-10-30 | Ingersoll Rand Company | Cordless power tool battery and charging system therefore |
GB2450794A (en) * | 2007-07-06 | 2009-01-07 | Bosch Gmbh Robert | Battery with temperature-dependant element |
GB2450794B (en) * | 2007-07-06 | 2009-05-20 | Bosch Gmbh Robert | Battery with temperature-dependent element |
US8012618B2 (en) | 2007-07-06 | 2011-09-06 | Robert Bosch Gmbh | Rechargeable battery and battery pack |
DE102008038740A1 (en) | 2008-08-12 | 2010-02-18 | Nordex Energy Gmbh | Wind turbine has rotor hub with multiple rotor blades, where energy storage is arranged in rotor hub for supplying electrical power to rotor blade adjustment angle drives |
WO2012167971A1 (en) * | 2011-06-09 | 2012-12-13 | Robert Bosch Gmbh | Energy storage device, system with energy storage device and method for generating a supply voltage of an energy storage device |
US9502989B2 (en) | 2011-06-09 | 2016-11-22 | Robert Bosch Gmbh | Energy storage device, system with energy storage device and method for generating a supply voltage of an energy storage device |
DE102013214448A1 (en) * | 2013-07-24 | 2015-01-29 | Robert Bosch Gmbh | Method and device for detecting a temperature increase in a plurality of electrochemical storage cells |
US10236544B2 (en) | 2014-04-10 | 2019-03-19 | Illinois Tool Works Inc. | Heater for electric vehicle batteries |
US9751427B2 (en) | 2014-09-03 | 2017-09-05 | Ford Global Technologies, Llc | Vehicle traction battery thermal conditioning |
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