DE102008034888A1 - Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate - Google Patents
Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate Download PDFInfo
- Publication number
- DE102008034888A1 DE102008034888A1 DE200810034888 DE102008034888A DE102008034888A1 DE 102008034888 A1 DE102008034888 A1 DE 102008034888A1 DE 200810034888 DE200810034888 DE 200810034888 DE 102008034888 A DE102008034888 A DE 102008034888A DE 102008034888 A1 DE102008034888 A1 DE 102008034888A1
- Authority
- DE
- Germany
- Prior art keywords
- battery
- cooling plate
- cell housing
- cell
- cooling
- 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- Withdrawn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
- H01M10/60—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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M10/6554—Rods or plates
-
- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
Die Erfindung betrifft eine Batterie mit mehreren jeweils ein Zellgehäuse aufweisenden Batteriezellen und einer Kühlplatte zu deren Kühlung.The The invention relates to a battery having a plurality of each cell housing having battery cells and a cooling plate to the Cooling.
Üblicherweise weist eine Batterie zur Anwendung in Kraftfahrzeugen, insbesondere in Kraftfahrzeugen mit einem Hybridantrieb oder Brennstoffzellenfahrzeugen, einen Zellblock aus mehreren elektrisch in Reihe und/oder parallel geschalteten Batteriezellen, beispielsweise Lithium-Ionen-Zellen, auf.Usually has a battery for use in motor vehicles, in particular in motor vehicles with a hybrid drive or fuel cell vehicles, a cell block of several electrically in series and / or in parallel switched battery cells, such as lithium-ion cells, on.
Die Batteriezellen müssen gekühlt werden, um die entstehende Verlustwärme abzuführen. Dazu wird eine Kühlvorrichtung eingesetzt, die mit den Batteriezellen thermisch verbunden ist.The Battery cells must be cooled to avoid the resulting Dissipate heat loss. This is a cooling device used, which is thermally connected to the battery cells.
Bei der so genannten Kopfkühlung der Batteriezellen ist die Kühlvorrichtung an einer Polseite der Batteriezellen angeordnet, an der sich elektrische Polkontakte der Batteriezellen befinden, die paarweise durch Zellverbinder elektrisch leitend miteinander verbunden sind.at the so-called head cooling of the battery cells is the Cooling device arranged on a pole side of the battery cells, at the electrical pole contacts of the battery cells are located, the pairwise electrically connected by cell connectors electrically conductive are.
Derartige
Batterien werden unter anderem in
Bei
der in
Bei
der in
Aus
Bei bekannten Batterien mit Kopfkühlung sind die Batteriezellen jeweils über an Polkontakten angreifende Kräfte mit der Kühlvorrichtung verbunden. Dies hat den Nachteil, dass dadurch die Polkontakte mechanisch stark belastet werden und die Polkontakte und insbesondere Dichtungen zwischen den Polkontakten und den Zellgehäusen der Batteriezellen beschädigt werden können.at known batteries with head cooling are the battery cells in each case via forces acting on pole contacts connected to the cooling device. This has the disadvantage that thereby the pole contacts are mechanically heavily loaded and the pole contacts and in particular seals between the pole contacts and the cell cases of the battery cells damaged can be.
Der Erfindung liegt die Aufgabe zu Grunde, eine verbesserte Batterie mit kopfgekühlten Batteriezellen anzugeben.Of the Invention is based on the object, an improved battery with head-cooled battery cells.
Die Aufgabe wird erfindungsgemäß durch eine Batterie gelöst, welche die in Anspruch 1 angegebenen Merkmale aufweist.The Object is achieved by a battery having dissolved, which has the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.advantageous Embodiments of the invention are the subject of the dependent claims.
Die erfindungsgemäße Batterie mit mehreren jeweils ein Zellgehäuse aufweisenden Batteriezellen und einer Kühlplatte zu deren Kühlung weist eine Anpressvorrichtung auf, mittels derer die Zellgehäuse der Batteriezellen unmittelbar an die Kühlplatte pressbar sind.The battery according to the invention with several in each case a cell housing having battery cells and a cooling plate for the cooling of a pressing device, by means of derer the cell housing of the battery cells directly the cooling plate can be pressed.
Die unmittelbare Anpressung der Batteriezellen an die Kühlplatte entlastet die Polkontakte der Batteriezellen. Dadurch wird vorteilhaft die Gefahr einer Beschädigung der Polkontakte und der Dichtungen zwischen ihnen und den Zellgehäusen der Batteriezellen reduziert.The direct pressing of the battery cells to the cooling plate relieves the pole contacts of the battery cells. This will be advantageous the risk of damage to the pole contacts and the seals between them and the cell cases of the battery cells reduced.
Außerdem verbessert die Anpressung der Batteriezellen an die Kühlplatte die Kühlung der Batteriezellen und die Stabilität des Zellverbundes der Batteriezellen.Furthermore improves the pressure of the battery cells to the cooling plate the cooling of the battery cells and the stability the cell network of the battery cells.
Im Detail umfasst die Anpressvorrichtung bevorzugt Verbindungselemente zum Verbinden der Zellgehäuse mit der Kühlplatte. Geeignete Verbindungselemente sind Schrauben, Zuganker, Nieten und/oder Spannbänder. Vorzugsweise weist die Kühlplatte Ausnehmungen auf, durch welche die Verbindungselemente führbar sind, und die Zellgehäuse weisen jeweils ein Aufnahmeelement für ein Verbindungselement auf.in the Detail, the pressing device preferably comprises connecting elements for connecting the cell case to the cooling plate. Suitable fasteners are screws, tie rods, rivets and / or Tie-down straps. Preferably, the cooling plate Recesses through which the fasteners feasible are, and the cell housing each have a receiving element for a connecting element.
Dabei ist das Aufnahmeelement beispielsweise ein Innengewinde für eine Schraube, welche das Verbindungselement zwischen der Kühlplatte und einer Batteriezelle ausbildet.there the receiving element is for example an internal thread for a screw connecting the connecting element between the cooling plate and a battery cell forms.
Eine derartige Ausgestaltung hat den Vorteil, dass die Vorspannung für jede Batteriezelle einzeln durch entsprechendes Anziehen der jeweiligen Schraube eingestellt werden kann. Dadurch können insbesondere vorteilhaft fertigungsbedingte Unterschiede der Abmessungen der Batteriezellen ausgeglichen werden.Such a configuration has the advantage that the bias voltage for each battery cell can be adjusted individually by appropriately tightening the respective screw. As a result, production-related differences in the dimensions of the battery cells can be particularly advantageous be the same.
Bevorzugt umfasst die Anpressvorrichtung ferner Federelemente, die beispielsweise als metallische Spannbügel ausgebildet sind. Dabei weisen die Spannbügel vorzugsweise jeweils eine Ausnehmung zur Durchführung eines korrespondierenden Verbindungselementes zum Verbinden eines Zellgehäuses mit der Kühlplatte auf.Prefers The pressing device further comprises spring elements, for example are formed as metallic clamps. Show the clamping bracket preferably in each case a recess for Carrying out a corresponding connecting element for connecting a cell housing to the cooling plate on.
Die Verwendung einer federbelasteten Anpressvorrichtung bewirkt vorteilhaft eine dauerhafte Vorspannung im Pressverbund der Kühlplatte und Batteriezellen über die Lebensdauer der Batterie.The Use of a spring-loaded pressure device causes advantageous a permanent preload in the compression bond of the cooling plate and battery cells over the life of the battery.
In einer bevorzugten Ausgestaltung der Erfindung sind die Verbindungselemente Schrauben mit einem Schraubkopf und einem Gewindebolzen, wobei der Durchmesser der Ausnehmung in einem Spannbügel größer als der Durchmesser des Gewindebolzens und kleiner als der Durchmesser des Schraubkopfes ist.In A preferred embodiment of the invention are the connecting elements Screws with a screw head and a threaded bolt, wherein the Diameter of the recess in a clamping bracket larger as the diameter of the threaded bolt and smaller than the diameter of the screw head is.
In dieser Ausgestaltung sind die Batteriezellen unterhalb und die Spannbügel oberhalb der Kühlplatte angeordnet und die Gewindebolzen der Schrauben sind jeweils durch eine Ausnehmung in einem Spannbügel und eine darunter liegende Ausnehmung in der Kühlplatte in ein Innengewinde in einem Zellgehäusedeckel des Zellgehäuses einer Batteriezelle geführt und mit diesem verschraubt.In This configuration, the battery cells below and the clamping bracket arranged above the cooling plate and the threaded bolts The screws are each through a recess in a clamping bracket and an underlying recess in the cooling plate into an internal thread in a cell housing cover of the cell housing led a battery cell and bolted to this.
Bei Batteriezellen, auf deren Zellgehäuse ein elektrischer Pol der jeweiligen Batteriezelle liegt, sind die Federelemente vorzugsweise von der Kühlplatte und/oder den Zellgehäusen elektrisch isoliert. Ferner ist in diesem Fall zwischen der Kühlplatte und den Zellgehäusen vorzugsweise eine elektrisch isolierende Wärmeleiteinheit angeordnet, beispielsweise ein Wärme leitender Formkörper. Dadurch wird vorteilhaft ein Kurzschluss der Batterie verhindert und somit die Sicherheit der Batterie erhöht.at Battery cells, on their cell housing an electrical Pol the respective battery cell is, the spring elements are preferably from the cooling plate and / or the cell housings electrically isolated. Further, in this case, between the cooling plate and the cell housings preferably an electrically insulating Heat conducting arranged, for example, a heat conductive molding. This advantageously becomes a short circuit prevents the battery and thus increases the safety of the battery.
Weitere Merkmale und Einzelheiten der Erfindung werden im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf Zeichnungen beschrieben. Die Zeichnungen sind schematische Darstellungen und zeigen in:Further Features and details of the invention will be described below of embodiments described with reference to drawings. The drawings are schematic representations and show in:
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.each other corresponding parts are in all figures with the same reference numerals Mistake.
Die
Die
Batteriezellen
Durch
die Zellgehäusedeckel
Dabei
ist ein erster Polkontakt
Zum
Schutz der Dichtungen
Der
zweite Polkontakt
Die
Kühlplatte
Die
Anpressvorrichtung umfasst metallische Schrauben
Die
Spannbügel
Auf
der Kühlplatte
Zwischen
der Kühlplatte
Die
Spannbügel
Der
erste Polkontakt
- 11
- Batteriezellebattery cell
- 22
- Kühlplattecooling plate
- 33
- Zellgehäusecell case
- 44
- Kühlkanalcooling channel
- 55
- ZellgehäusedeckelCell housing cover
- 6.16.1
- erster Polkontaktfirst pole contact
- 6.26.2
- zweiter Polkontaktsecond pole contact
- 77
- Zellverbindercell connectors
- 88th
- Schraubescrew
- 99
- Spannbügeltensioning bow
- 1010
- elektrisch isolierende Matteelectrical insulating mat
- 1111
- Formkörpermoldings
- 1212
- Ausnehmung in einem Spannbügelrecess in a clamp
- 1313
- Innengewindeinner thread
- 1414
- Dichtungpoetry
- 1515
- Unterlegscheibewasher
- 1616
- Ausbuchtungbulge
- BB
- Batteriebattery
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10003740 C1 [0005, 0006] - DE 10003740 C1 [0005, 0006]
- - DE 60213474 T2 [0005, 0007] - DE 60213474 T2 [0005, 0007]
- - US 2005/0174092 A1 [0005, 0008] US 2005/0174092 A1 [0005, 0008]
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810034888 DE102008034888A1 (en) | 2008-07-26 | 2008-07-26 | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810034888 DE102008034888A1 (en) | 2008-07-26 | 2008-07-26 | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008034888A1 true DE102008034888A1 (en) | 2010-01-28 |
Family
ID=41428713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810034888 Withdrawn DE102008034888A1 (en) | 2008-07-26 | 2008-07-26 | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008034888A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010012993A1 (en) | 2010-03-26 | 2011-09-29 | Daimler Ag | Battery for e.g. electrical vehicle, has set of single cells secured at heat guide plate by attachment members i.e. rivets, where attachment members and framework of single cells are formed as common mold part |
WO2013083479A1 (en) * | 2011-12-07 | 2013-06-13 | Valeo Systemes Thermiques | Battery module thermal regulating device |
DE102008059953B4 (en) * | 2008-12-02 | 2015-02-12 | Daimler Ag | Battery and its use |
DE102014002522A1 (en) | 2014-02-22 | 2015-08-27 | Man Truck & Bus Ag | Battery with an arrester cooling |
WO2023134547A1 (en) * | 2022-01-13 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Box body, battery, electrical apparatus, and method and apparatus for preparing battery |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003740C1 (en) | 2000-01-28 | 2001-06-13 | Daimler Chrysler Ag | Electric battery e.g. traction battery for electric or hybrid vehicle has cooling plate in thermal contact with cell connectors coupled between battery cell poles of series connected battery cells |
US20050174092A1 (en) | 2003-10-28 | 2005-08-11 | Johnson Controls Technology Company | Battery system |
DE60213474T2 (en) | 2002-02-19 | 2007-03-15 | 3M Innovative Properties Co., St. Paul | DEVICE AND METHOD FOR TEMPERATURE CONTROL IN ELECTROCHEMICAL CELLS WITH HIGH ENERGY DENSITY |
DE102006059989A1 (en) * | 2006-12-19 | 2008-06-26 | Daimler Ag | Arrangement for cooling battery, has multiple individual cells, which are assembled together for battery and individual cells have cylindrical housing form |
-
2008
- 2008-07-26 DE DE200810034888 patent/DE102008034888A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003740C1 (en) | 2000-01-28 | 2001-06-13 | Daimler Chrysler Ag | Electric battery e.g. traction battery for electric or hybrid vehicle has cooling plate in thermal contact with cell connectors coupled between battery cell poles of series connected battery cells |
DE60213474T2 (en) | 2002-02-19 | 2007-03-15 | 3M Innovative Properties Co., St. Paul | DEVICE AND METHOD FOR TEMPERATURE CONTROL IN ELECTROCHEMICAL CELLS WITH HIGH ENERGY DENSITY |
US20050174092A1 (en) | 2003-10-28 | 2005-08-11 | Johnson Controls Technology Company | Battery system |
DE102006059989A1 (en) * | 2006-12-19 | 2008-06-26 | Daimler Ag | Arrangement for cooling battery, has multiple individual cells, which are assembled together for battery and individual cells have cylindrical housing form |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008059953B4 (en) * | 2008-12-02 | 2015-02-12 | Daimler Ag | Battery and its use |
DE102010012993A1 (en) | 2010-03-26 | 2011-09-29 | Daimler Ag | Battery for e.g. electrical vehicle, has set of single cells secured at heat guide plate by attachment members i.e. rivets, where attachment members and framework of single cells are formed as common mold part |
WO2013083479A1 (en) * | 2011-12-07 | 2013-06-13 | Valeo Systemes Thermiques | Battery module thermal regulating device |
FR2984016A1 (en) * | 2011-12-07 | 2013-06-14 | Valeo Systemes Thermiques | DEVICE FOR THERMALLY REGULATING A BATTERY MODULE |
DE102014002522A1 (en) | 2014-02-22 | 2015-08-27 | Man Truck & Bus Ag | Battery with an arrester cooling |
DE102014002522B4 (en) | 2014-02-22 | 2021-09-02 | Man Truck & Bus Se | Battery with an arrester cooling |
WO2023134547A1 (en) * | 2022-01-13 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Box body, battery, electrical apparatus, and method and apparatus for preparing battery |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102008059966B4 (en) | Battery having a plurality of battery cells arranged in a cell assembly and using a battery | |
EP2789029B1 (en) | Battery and cell block for a battery | |
EP2220719B1 (en) | Battery comprising a case and a heat-conducting plate | |
EP2550697B1 (en) | Battery having a plurality of single cells | |
DE102008034871A1 (en) | Battery, in particular vehicle battery | |
DE102007063178B4 (en) | Battery with heat-conducting plate for tempering the battery | |
DE102008034876B4 (en) | Battery with a arranged in a battery housing heat conducting plate for temperature control of the battery and method for producing a battery | |
EP2564462B1 (en) | Battery with cooling plate and vehicle with such a battery | |
DE102008034854A1 (en) | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has clamping device provided at cooling plate for fastening battery cells, where clamping device is formed as elastic and force transmitting device | |
DE102008059954B4 (en) | Battery with several parallel and / or series electrically interconnected battery cells and a cooling device and the use of the battery | |
DE102008034875A1 (en) | Battery i.e. lithium-ion-battery, for use in vehicle e.g. vehicle with hybrid drive, has cooling device that is arranged on pole side of single cells, where cooling device comprises cooling plate and transfer plate | |
DE102015010925A1 (en) | Cell connector unit and / or cell voltage tapping unit | |
DE102010013025A1 (en) | Vehicle battery e.g. lithium ion battery for hybrid car, has cooling plate arranged in housing for controlling temperature of battery, where plate is provided with molds, and cooling pipe held in molds in force and/or form fit manner | |
DE102008010838A1 (en) | Battery with a battery housing and a heat-conducting plate for tempering the battery | |
DE102008016936A1 (en) | Electrochemical energy storage unit | |
DE102008034862A1 (en) | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has heat contact elements that are attached to heat conducting elements or battery cells in material-cohesive and/or positive-fit and/or force-fit manner | |
DE102018221477A1 (en) | Battery module comprising a plurality of battery cells | |
DE102013020860A1 (en) | Cell block for a battery | |
DE102008034888A1 (en) | Battery for use in motor vehicle e.g. motor vehicle with hybrid drive, has pressing device provided for directly pressing cell housing to cooling plate and comprising connecting units for connecting cell housing with cooling plate | |
DE102016220877A1 (en) | Wärmeleitmatte, battery assembly with such a heat-conducting mat and vehicle | |
DE102019215636A1 (en) | Battery module | |
DE102013109808A1 (en) | battery assembly | |
DE102013018415A1 (en) | Battery with a large number of individual battery cells | |
DE102019126061A1 (en) | Battery module | |
DE102011078235B4 (en) | Contact element for mechanical, thermal and electrical contact with an energy storage device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01M0010500000 Ipc: H01M0010613000 |
|
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01M0010500000 Ipc: H01M0010613000 Effective date: 20131218 |
|
R120 | Application withdrawn or ip right abandoned | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20150410 |