DE102015115602A1 - Battery cell for the traction battery of an electrically powered vehicle and corresponding manufacturing method - Google Patents
Battery cell for the traction battery of an electrically powered vehicle and corresponding manufacturing method Download PDFInfo
- Publication number
- DE102015115602A1 DE102015115602A1 DE102015115602.4A DE102015115602A DE102015115602A1 DE 102015115602 A1 DE102015115602 A1 DE 102015115602A1 DE 102015115602 A DE102015115602 A DE 102015115602A DE 102015115602 A1 DE102015115602 A1 DE 102015115602A1
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- Germany
- Prior art keywords
- cell
- battery cell
- battery
- housing
- coil
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- 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.)
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- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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- 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
- H01M50/531—Electrode connections inside a battery casing
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- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
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- 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
Abstract
Die Erfindung stellt eine Batteriezelle (10) für eine Traktionsbatterie eines elektrisch betriebenen Fahrzeuges mit den folgenden Merkmalen bereit: die Batteriezelle (10) weist ein Gehäuse (11) mit einem Boden und einen innerhalb des Gehäuses (11) angeordneten Zellwickel (12) auf; der Zellwickel (12) besitzt zwei leitfähige Seiten zum elektrischen Abgriff (13, 14) der Spannung; und eine leitfähige Seite des Zellwickels (12) ist mechanisch an den Boden angebunden. Die Erfindung stellt ferner eine entsprechende Traktionsbatterie, ein entsprechendes Fahrzeug sowie ein entsprechendes Verfahren zum Herstellen einer Batteriezelle (10) bereit.The invention provides a battery cell (10) for a traction battery of an electrically powered vehicle having the following features: the battery cell (10) comprises a housing (11) having a bottom and a cell coil (12) disposed within the housing (11); the cell coil (12) has two conductive sides for electrical tapping (13, 14) of the voltage; and a conductive side of the cell coil (12) is mechanically tied to the ground. The invention further provides a corresponding traction battery, a corresponding vehicle and a corresponding method for producing a battery cell (10).
Description
Die vorliegende Erfindung betrifft eine Batteriezelle für eine Traktionsbatterie eines elektrisch betriebenen Fahrzeuges. Die vorliegende Erfindung betrifft darüber hinaus eine entsprechende Traktionsbatterie, ein entsprechendes Fahrzeug sowie ein entsprechendes Verfahren zum Herstellen einer Batteriezelle. The present invention relates to a battery cell for a traction battery of an electrically powered vehicle. The present invention further relates to a corresponding traction battery, a corresponding vehicle and a corresponding method for producing a battery cell.
Stand der Technik State of the art
Bekannt sind unterschiedlichste Batteriezellen für die Traktionsbatterie eines elektrisch betriebenen Fahrzeugs. Diese können prismatisch geformt sein und ein Aluminium-Gehäuse aufweisen. Die Batteriezellen mögen eine Kühlung aufweisen, welche unterhalb der Batteriezellen angeordnet ist. Innerhalb des Aluminium-Gehäuses kann ein sogenannter Zellwickel (jelly roll) – eine lange, aufgewickelte Elektrode – verbaut sein, welcher zwei leitfähige Seiten zum elektrischen Abgriff der Spannung besitzt. Various battery cells are known for the traction battery of an electrically powered vehicle. These may be prismatic in shape and have an aluminum housing. The battery cells may have a cooling, which is arranged below the battery cells. Within the aluminum housing may be a so-called cell roll (jelly roll) - a long, wound electrode - be installed, which has two conductive sides for electrical tapping of the voltage.
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Offenbarung der Erfindung Disclosure of the invention
Die Erfindung stellt eine Batteriezelle für eine Traktionsbatterie eines elektrisch betriebenen Fahrzeuges, eine entsprechende Traktionsbatterie, ein entsprechendes Elektrofahrzeug sowie ein entsprechendes Verfahren zum Herstellen einer Batteriezelle gemäß den unabhängigen Ansprüchen bereit. The invention provides a battery cell for a traction battery of an electrically powered vehicle, a corresponding traction battery, a corresponding electric vehicle and a corresponding method for manufacturing a battery cell according to the independent claims.
Ein Vorzug dieser Lösung liegt in der direkten Wärmeübertragung vom Zellwickel an die Unterseite des Gehäuses. An advantage of this solution lies in the direct heat transfer from the cell coil to the bottom of the housing.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen angegeben. So kann die Batteriezelle prismatisch geformt sein. Mit einer solchen prismatischen Zelle können, etwa im Vergleich zu einer konventionellen Zylinderzelle, kompaktere Module für die Traktionsbatterie gebildet werden, da die aus Rechtecken bestehende Mantelfläche der Zelle eine bessere Raumausnutzung zulässt. Further advantageous embodiments of the invention are specified in the dependent claims. Thus, the battery cell can be prismatic. With such a prismatic cell, more compact modules for the traction battery can be formed, as compared to a conventional cylinder, since the existing of rectangles lateral surface of the cell allows better space utilization.
In einer bevorzugten Ausführungsform ist das Gehäuse ein Aluminium-Gehäuse. Dieser Gehäusewerkstoff verleiht der resultierenden Batteriezelle bei hoher Festigkeit ein für die Verwendung in Traktionsbatterien vorteilhaft geringes Eigengewicht. In a preferred embodiment, the housing is an aluminum housing. This housing material gives the resulting battery cell with high strength for use in traction batteries advantageously low dead weight.
Die Batteriezelle kann dabei eine Kühlung aufweisen, welche jenseits des Bodens angeordnet ist. Dadurch kann eine mittelbare Wärmeübertragung vom Zellwickel über die Unterseite des Gehäuses an die Kühlung der Batteriezelle erfolgen. The battery cell can have a cooling, which is arranged beyond the bottom. As a result, an indirect heat transfer from the cell winding via the underside of the housing to the cooling of the battery cell can take place.
Pluspol und Minuspol des Abgriffes sind vorzugsweise auf einer gemeinsamen Seite des Zellwickels angeordnet, um die Kontaktierung des resultierenden Batteriemodules zu erleichtern. Sofern es sich bei der die Abgriffe tragenden Seite um die – dem Boden abgewandte – Oberseite der Batteriezelle handelt, sind Kontaktierung und Kühlung des Modules so vorteilhaft getrennt. Positive pole and negative pole of the tap are preferably arranged on a common side of the cell coil to facilitate the contacting of the resulting battery module. If the side bearing the taps is the top side of the battery cell, which faces away from the bottom, contacting and cooling of the module are thus advantageously separated.
In einer möglichen Ausgestaltung umfasst der Zellwickel eine mit dem Pluspol galvanisch verbundene Kathodenfolie und eine mit dem Minuspol galvanisch verbundene Anodenfolie, welche das Gehäuse berührt. Da das Zellgehäuse ohnehin auf positivem Potential liegt, kann diese untere Seite des Wickels mechanisch an den Zellboden angebunden werden, um die Wärme direkt zu übergeben. In one possible embodiment, the cell winding comprises a cathode foil which is galvanically connected to the positive pole and an anode foil which is galvanically connected to the negative pole and which contacts the housing. Since the cell housing is already at a positive potential, this lower side of the coil can be mechanically connected to the cell bottom to transfer the heat directly.
Um keinen Kurzschluss zwischen den Anoden- und Kathodenfolien zu bekommen, werden die Kathodenfolien hierzu möglichst so zugeschnitten und mit den Anodenfolien zu dem Zellwickel aufgewickelt, dass nur die Anodenfolien überstehen und das Gehäuse kontaktieren, wenn der Zellwickel bis zu dem Boden in das Gehäuse geschoben, die Kathodenfolie galvanisch mit dem Pluspol verbunden und die Anodenfolie galvanisch mit dem Minuspol verbunden wird. Die Unterseite des Zellwickels schwebt innerhalb des Zellgehäuses somit nicht in der Luft, sondern hat vielmehr eine Funktion. In order not to get a short circuit between the anode and cathode foils, the cathode foils are as far as possible cut and with the anode foils to the cell winding wound so that only the anode foils survive and contact the housing when the cell coil pushed to the bottom in the housing, the cathode foil is galvanically connected to the positive pole and the anode foil is galvanically connected to the negative terminal. The underside of the cell coil thus does not hover within the cell housing in the air, but rather has a function.
Der solchermaßen in das Zellgehäuse geschobene Zellwickel presst sich an die Seitenwände dieses Gehäuses. Dadurch wird die Wärme aus dem Wickel nicht nur direkt an den Boden, sondern auch über die Seitenwände übergeben, von wo er die Zellseitenwand entlang ebenfalls bis zum Boden der Zelle geht. The cell winding thus pushed into the cell housing presses against the side walls of this housing. As a result, the heat from the coil is transferred not only directly to the floor, but also via the side walls, from where it also goes along the cell side wall to the bottom of the cell.
Kurze Beschreibung der Zeichnung Short description of the drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. An embodiment of the invention is illustrated in the drawing and will be described in more detail below.
Die einzige Figur verdeutlicht den prinzipiellen Aufbau einer erfindungsgemäßen Batteriezelle anhand einer teiltransparenten Seitenansicht. The single figure illustrates the basic structure of a battery cell according to the invention by means of a partially transparent side view.
Ausführungsformen der Erfindung Embodiments of the invention
Der Zellwickel
Die Kathodenfolie wurde hierzu im Rahmen der Herstellung der Batteriezelle
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102012018339 A1 [0003] DE 102012018339 A1 [0003]
- JP 2013143225 A [0004] JP 2013143225A [0004]
- WO 2005043650 A2 [0005] WO 2005043650 A2 [0005]
- DE 10200701075083 [0006] DE 10200701075083 [0006]
- EP 2475025 A1 [0007] EP 2475025 A1 [0007]
- WO 2010149608 A2 [0008] WO 2010149608 A2 [0008]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102015115602.4A DE102015115602A1 (en) | 2015-09-16 | 2015-09-16 | Battery cell for the traction battery of an electrically powered vehicle and corresponding manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102015115602.4A DE102015115602A1 (en) | 2015-09-16 | 2015-09-16 | Battery cell for the traction battery of an electrically powered vehicle and corresponding manufacturing method |
Publications (1)
Publication Number | Publication Date |
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DE102015115602A1 true DE102015115602A1 (en) | 2017-03-16 |
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DE102015115602.4A Pending DE102015115602A1 (en) | 2015-09-16 | 2015-09-16 | Battery cell for the traction battery of an electrically powered vehicle and corresponding manufacturing method |
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DE (1) | DE102015115602A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005043650A2 (en) | 2003-10-28 | 2005-05-12 | Johnson Controls Technology Company | Battery system with improved heat dissipation |
DE102007010750B3 (en) | 2007-02-27 | 2008-09-04 | Daimler Ag | Electrochemical single cell for battery as high power battery, particularly for partly driven of motor vehicle for passenger transport, has electrode stack wound around cooling pipe and unfolded on cooling pipe |
DE102008025884A1 (en) * | 2008-05-29 | 2009-12-03 | Temic Automotive Electric Motors Gmbh | Cylindrical energy storage cell for storing electricity in e.g. hybrid vehicle, has electrically non conductive spacer arranged between electrical conductors in interior of storage cell between cell cover and electrode sleeve |
DE102008034696A1 (en) * | 2008-07-26 | 2010-01-28 | Daimler Ag | Battery cell has cell housing and foil-sleeve, which has two different polarities around winding spindle of wound electrode foils |
WO2010149608A2 (en) | 2009-06-25 | 2010-12-29 | Sb Limotive Company Ltd. | Battery comprising electrode heat conductors for efficient temperature control |
EP2475025A1 (en) | 2011-01-07 | 2012-07-11 | Lithium Energy Japan | Electric storage device and electric storage apparatus |
JP2013143225A (en) | 2012-01-10 | 2013-07-22 | Toyota Industries Corp | Power storage device, and vehicle |
DE102012018339A1 (en) | 2012-09-15 | 2014-03-20 | Audi Ag | Battery e.g. lithium ion cell used in motor car, has cell winding wrapped around heat guidance rods that are arranged in cell cladding and connected and bonded with heat guide plate on which electrochemical single cells are arranged |
US20140147732A1 (en) * | 2011-07-20 | 2014-05-29 | Gs Yuasa International Ltd. | Cylindrical battery |
-
2015
- 2015-09-16 DE DE102015115602.4A patent/DE102015115602A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005043650A2 (en) | 2003-10-28 | 2005-05-12 | Johnson Controls Technology Company | Battery system with improved heat dissipation |
DE102007010750B3 (en) | 2007-02-27 | 2008-09-04 | Daimler Ag | Electrochemical single cell for battery as high power battery, particularly for partly driven of motor vehicle for passenger transport, has electrode stack wound around cooling pipe and unfolded on cooling pipe |
DE102008025884A1 (en) * | 2008-05-29 | 2009-12-03 | Temic Automotive Electric Motors Gmbh | Cylindrical energy storage cell for storing electricity in e.g. hybrid vehicle, has electrically non conductive spacer arranged between electrical conductors in interior of storage cell between cell cover and electrode sleeve |
DE102008034696A1 (en) * | 2008-07-26 | 2010-01-28 | Daimler Ag | Battery cell has cell housing and foil-sleeve, which has two different polarities around winding spindle of wound electrode foils |
WO2010149608A2 (en) | 2009-06-25 | 2010-12-29 | Sb Limotive Company Ltd. | Battery comprising electrode heat conductors for efficient temperature control |
EP2475025A1 (en) | 2011-01-07 | 2012-07-11 | Lithium Energy Japan | Electric storage device and electric storage apparatus |
US20140147732A1 (en) * | 2011-07-20 | 2014-05-29 | Gs Yuasa International Ltd. | Cylindrical battery |
JP2013143225A (en) | 2012-01-10 | 2013-07-22 | Toyota Industries Corp | Power storage device, and vehicle |
DE102012018339A1 (en) | 2012-09-15 | 2014-03-20 | Audi Ag | Battery e.g. lithium ion cell used in motor car, has cell winding wrapped around heat guidance rods that are arranged in cell cladding and connected and bonded with heat guide plate on which electrochemical single cells are arranged |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01M0002260000 Ipc: H01M0050531000 |
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