DE102010055599A1 - Battery for use as e.g. traction battery in partially electrically driven vehicle, in lithium ion technology, has frames comprising recess such that welded region is exposed between electrode stack and edge of battery single cells - Google Patents
Battery for use as e.g. traction battery in partially electrically driven vehicle, in lithium ion technology, has frames comprising recess such that welded region is exposed between electrode stack and edge of battery single cells Download PDFInfo
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- DE102010055599A1 DE102010055599A1 DE102010055599A DE102010055599A DE102010055599A1 DE 102010055599 A1 DE102010055599 A1 DE 102010055599A1 DE 102010055599 A DE102010055599 A DE 102010055599A DE 102010055599 A DE102010055599 A DE 102010055599A DE 102010055599 A1 DE102010055599 A1 DE 102010055599A1
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 5
- 238000005516 engineering process Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract 2
- 239000011888 foil Substances 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Die Erfindung betrifft eine Batterie mit einem Stapel aus mehreren prismatischen Batterieeinzelzellen nach der im Oberbegriff von Anspruch 1 näher definierten Art.The invention relates to a battery with a stack of several prismatic battery individual cells according to the closer defined in the preamble of claim 1.
Aus dem allgemeinen Stand der Technik sind Batterieeinzelzellen, beispielsweise in Lithium-Ionen-Technologie, bekannt, welche in Form von sogenannten Pouch- oder Coffeebag-Zellen ausgebildet sind. Diese sogenannten Pouch-Zellen weisen den üblichen Elektrodenstapel aus Anodenfolien, Kathodenfolien und dazwischen angeordneten Separatorfolien auf. Dieser Elektrodenstapel wird dann zwischen Folien eingebracht, welche umlaufend um den Elektrodenstapel, nachdem dieser mit Elektrolyt getränkt worden ist, verschweißt werden. Es entsteht eine Batterieeinzelzelle in einer flexiblen Außenhaut, einer Art Beutel, welcher vorzugsweise aus einer Aluminiumschicht als Diffusionssperre sowie zwei thermoplastischen Kunststoffschichten auf dieser Aluminiumschicht besteht. Die thermoplastischen Kunststoffschichten können dann angeschmolzen und unter Druck erkaltet werden, sodass diese miteinander verschweißen. Durch den umlaufenden verschweißten Bereich ragen lediglich die beiden Stromableiter, welche mit den Anodenfolien einerseits und den Kathodenfolien andererseits verbunden sind und welche zur elektrischen Kontaktierung der Batterieeinzelzelle dienen.Single battery cells, for example in lithium-ion technology, are known from the general state of the art, which are designed in the form of so-called pouch or coffee bag cells. These so-called pouch cells have the usual electrode stack of anode foils, cathode foils and separator foils arranged between them. This electrode stack is then inserted between films, which are welded around the electrode stack, after it has been soaked with electrolyte, welded. The result is a single battery cell in a flexible outer skin, a kind of bag, which preferably consists of an aluminum layer as a diffusion barrier and two thermoplastic layers of plastic on this aluminum layer. The thermoplastic resin layers can then be melted and cooled under pressure so that they weld together. By the circumferential welded area protrude only the two current conductors, which are connected to the anode foils on the one hand and the cathode foils on the other hand and which serve for electrical contacting of the battery single cell.
Derartige Pouch-Zellen sind typischerweise mechanisch relativ empfindlich und werden daher zusammen mit geeigneten Rahmen, welche entweder als jeweils zwischen zwei Zellen liegende Zwischenrahmen oder als jeweils eine der Zellen einschließende Halbrahmen ausgebildet sind. Zwischen den beiden Zwischenrahmen beziehungsweise den beiden Hälften des Halbrahmens wird dabei der umlaufende verschweißte Bereich eingeklemmt, um die Zelle über einen Kraftschluss mit dem Rahmen zu verbinden und eine mechanisch stabile Einheit zu schaffen. Die Batterieeinzelzellen und die Rahmen werden dann typischerweise zur Batterie gestapelt und über am Ende des Stapels angeordnete Druckbrillen und geeignete Spannelemente, beispielsweise Zuganker, Spannbänder oder dergleichen, verspannt.Such pouch cells are typically relatively mechanically sensitive, and therefore, together with suitable frames, which are formed either as inter-frame inter-cell frames or as one-half-frame enclosing cells, respectively. Between the two intermediate frames or the two halves of the half frame while the circumferential welded area is clamped in order to connect the cell via a frictional connection with the frame and to create a mechanically stable unit. The battery cells and frames are then typically stacked into the battery and tensioned via pressure gauges located at the end of the stack and suitable tension members, such as tie rods, straps, or the like.
Nun ist es so, dass bei einer Überladung oder einem Kurzschluss im Inneren der Batterieeinzelzelle, insbesondere wenn diese in Lithium-Ionen-Technologie ausgebildet sind, ein Überdruck entstehen kann, welcher ab einem bestimmten Wert definiert abgebaut werden muss, um eine exotherme Reaktion der Zellchemie, dem sogenannten Thermal Runaway der Batterieeinzelzelle zu verhindern. Eine solche exotherme Reaktion kann zu einem Brand oder einer Explosion in der Batterieeinzelzelle führen. Der Überdruck entsteht dabei im Wesentlichen durch die Verdampfung des Elektrolyten, wenn die Batterieeinzelzelle überhitzt wird. Nun ist es so, dass in einer einzelnen nicht zwischen Rahmen beziehungsweise Halbrahmen eingespannten Pouch-Zelle nur vergleichsweise geringe Drücke aufgebaut werden können, da dann die Folie im Bereich der Schweißstellen durch die Wirkung von Schälspannungen früh aufreißt und der Druck abgebaut wird. Wird die als Pouch-Zelle ausgebildete Batterieeinzelzelle jedoch wie oben beschrieben umlaufend zwischen Rahmen in Form von Zwischenrahmen oder Halbrahmen eingeklemmt, dann kann sich der entstehende Druck erst dann abbauen, wenn der komplette Zellstapel beispielsweise durch ein Reißen von Zugankern oder Spannbändern in axialer Richtung zerstört wird. Die hierfür erforderlichen Drücke sind jedoch extrem hoch, sodass bei dem oben beschriebenen Aufbau ein Thermal Runaway nicht verhindert werden kann. Sofern es zu einer Zerstörung des gesamten Stapels aus Batterieeinzelzellen durch sich explosionsartig öffnende Zellen kommt, entsteht außerdem Energie in einer Größenordnung, welche nicht beherrschbar ist. Ein solches Szenario gilt es also unbedingt zu verhindern.It is then the case that in the event of an overcharge or a short circuit in the interior of the single cell of the battery, especially if these are formed in lithium-ion technology, an overpressure may arise which must be reduced in a defined manner above a certain value in order to exert an exothermic reaction of the cell chemistry to prevent the so-called thermal runaway of the single cell battery. Such an exothermic reaction can lead to a fire or explosion in the single battery cell. The overpressure is essentially due to the evaporation of the electrolyte when the battery cell is overheated. Now it is the case that only comparatively low pressures can be built up in a single pouch cell not clamped between frame or half frame, since then the foil tears open early in the area of the welds due to the effect of peeling stresses and the pressure is reduced. If, however, the battery cell formed as a pouch cell is clamped peripherally between frame in the form of intermediate frame or half frame as described above, then the resulting pressure can only degrade when the complete cell stack is destroyed in the axial direction, for example by tearing tie rods or tension bands , However, the pressures required for this are extremely high, so that in the structure described above, a thermal runaway can not be prevented. If there is a destruction of the entire stack of individual battery cells by explosively opening cells, also creates energy in an order of magnitude, which is not controllable. It is important to avoid such a scenario.
Die deutsche Offenlegungsschrift
Die Aufgabe der hier vorliegenden Erfindung besteht nun darin, eine Batterie gemäß dem Oberbegriff von Anspruch 1 anzugeben, welche die beschriebenen Nachteile vermeidet.The object of the present invention is now to provide a battery according to the preamble of claim 1, which avoids the disadvantages described.
Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil von Anspruch 1 genannten Merkmale gelöst. Weitere vorteilhafte Ausgestaltungen sowie eine bevorzugte Verwendung der erfindungsgemäßen Batterie sind in den abhängigen Unteransprüchen angegeben.According to the invention this object is achieved by the features mentioned in the characterizing part of claim 1. Further advantageous embodiments and a preferred use of the battery according to the invention are specified in the dependent subclaims.
Die erfindungsgemäße Batterie besteht also aus Batterieeinzelzellen, welche jeweils einen in Folie eingeschweißten Elektrodenstapel umfassen. Die Batterieeinzelzellen sind also in der Form von Pouch-Zellen ausgebildet. Die Pouch-Zellen sind, wie im eingangs beschriebenen Stand der Technik vorgesehen, zwischen Rahmen zu dem Stapel der Batterieeinzelzellen verspannt. Zur mechanischen Stabilisierung der Batterieeinzelzellen sind die umlaufend verschweißten Bereiche dabei zwischen jeweils zwei benachbarten Rahmen eingeklemmt und bilden so eine mechanisch durch Kraftschluss verbundene Einheit aus Rahmen und Batterieeinzelzelle. Die erfindungsgemäße Lösung sieht nun vor, dass wenigstens einer von zwei benachbarten Rahmen in einem Bereich, in dem er in Kontakt zum umlaufend verschweißten Bereich steht, eine Ausnehmung aufweist. Die Ausnehmung ist dabei so ausgebildet, dass der verschweißte Bereich in seiner gesamten Ausdehnung zwischen dem Elektrodenstapel und dem Rand der Batterieeinzelzelle auf wenigstens einer Seite, vorzugsweise auf beiden Seiten, freiliegt. Durch diese Ausnehmung im Bereich des Rahmens wird also erreicht, dass die Batterieeinzelzelle über den größten Teil ihres Umfangs im umlaufenden verschweißten Bereich zwischen den beiden benachbarten Rahmen eingespannt ist. Damit ist ein mechanisch stabiler Aufbau aus den beiden benachbarten Rahmen und der Batterieeinzelzelle sichergestellt. Durch die Ausnehmung wird in einem Abschnitt des verschweißten Bereichs dieser zwischen den Rahmen freigelassen. In diesem Abschnitt reagiert der verschweißte Bereich also so, als wenn die Pouch-Zelle nicht zwischen den Rahmen eingespannt wäre. Ohne dass über zusätzliche Elemente wie Sicherheitsventile, eine gezielte Schwächung der Schweißverbindung oder dergleichen ein Unterschied in dem umlaufend verschweißten Bereich vorgesehen werden muss, entsteht durch die in den Rahmen eingebrachte wenigstens eine Ausnehmung einfach und effizient eine Stelle, in deren Bereich die beiden miteinander verschweißten Folien im Falle eines Überdrucks im Inneren der Batterieeinzelzelle durch Schälspannungen früh aufreißen. Ohne dass bei der Fertigung der Batterieeinzelzelle irgendwelche Änderungen vorgenommen werden müssten, entsteht so durch eine einfache Ausnehmung im Bereich des Rahmens ein Aufbau, bei welchem die Batterieeinzelzelle, sollte diese einen zu hohen Innendruck aufbauen, sich sicher und zuverlässig öffnet und so eine exotherme Reaktion der Zellchemie verhindert.The battery according to the invention thus consists of single battery cells, each one in Include foil welded electrode stack. The battery individual cells are thus formed in the form of pouch cells. The pouch cells are, as provided in the prior art described above, braced between frames to the stack of battery cells. For mechanical stabilization of the individual battery cells, the circumferentially welded areas are clamped between each two adjacent frames and thus form a unit of frame and single battery cell mechanically connected by adhesion. The solution according to the invention now provides that at least one of two adjacent frames has a recess in a region in which it is in contact with the peripherally welded region. The recess is designed so that the welded area in its entire extent between the electrode stack and the edge of the single battery cell on at least one side, preferably on both sides, exposed. By this recess in the region of the frame is thus achieved that the battery single cell is clamped over the greater part of its circumference in the circumferential welded area between the two adjacent frame. This ensures a mechanically stable construction of the two adjacent frames and the single battery cell. Through the recess in a portion of the welded area this is left between the frame. In this section, the welded area responds as if the pouch cell were not clamped between the frames. Without having to provide a difference in the circumferentially welded area via additional elements such as safety valves, a targeted weakening of the welded joint or the like, the space introduced by the two films welded together forms at least one recess simply and efficiently in the event of overpressure in the interior of the single battery cell, rip it open early by peeling. Without that any changes would have to be made in the manufacture of single battery cell, created by a simple recess in the frame a structure in which the single battery cell, should they build too high an internal pressure, safely and reliably opens and so an exothermic reaction Cell chemistry prevented.
Gemäß einer besonders günstigen und vorteilhaften Weiterbildung der erfindungsgemäßen Batterie ist es vorgesehen, dass alle Ausnehmungen auf einer Seite des Stapels, vorzugsweise auf der den Stromableitern abgewandten Seite des Stapels angeordnet sind. Da der Elektrolyt leitend ist, sollte ein Kontakt mit den Stromableitern und der in diesem Bereich typischerweise angeordneten Elektronik verhindert werden, um weitere Kurzschlüsse zu unterbinden. Die Anordnung aller Ausnehmungen auf einer Seite des Stapels, vorzugsweise in einem in Stapelrichtung verlaufenden Bereich, ermöglicht es im Falle, dass eine oder mehrere der Batterieeinzelzellen einen zu hohen Innendruck entwickeln, die entstandenen Venting-Gase zusammen mit den typischerweise von den Venting-Gasen mitgerissenen flüssigen Elektrolyttröpfchen in einen Bereich zu leiten. Dieser kann so ausgebildet werden, dass sie vergleichsweise wenig Schaden anrichten können. Sind alle Venting-Öffnungen auf einer Seite des Stapels der Batterieeinzelzellen angeordnet, so kann sehr leicht über ein geeignetes Gehäuseteil ein Sammeln oder Abführen der Gase und/oder des Elektrolyts in einem Bereich, in dem dieser keinen Schaden anrichten kann, erreicht werden. Eine aufwändige Leitungsführung mit Schläuchen, wie beim eingangs genannten Stand der Technik, ist dabei nicht notwendig, prinzipiell aber selbstverständlich denkbar.According to a particularly favorable and advantageous development of the battery according to the invention, it is provided that all recesses are arranged on one side of the stack, preferably on the side of the stack facing away from the current conductors. Since the electrolyte is conductive, contact with the current conductors and the electronics typically arranged in this area should be prevented in order to prevent further short circuits. The arrangement of all the recesses on one side of the stack, preferably in a stacked area, makes it possible, in the event that one or more of the battery cells develop too high an internal pressure, the resulting venting gases along with those typically entrained by the venting gases liquid electrolyte droplets in an area to lead. This can be designed so that they can cause relatively little damage. If all Venting openings are arranged on one side of the stack of battery cells, it can very easily be achieved via a suitable housing part collecting or removing the gases and / or the electrolyte in an area where it can do no damage. An expensive cable routing with hoses, as in the aforementioned prior art, is not necessary, but in principle conceivable course.
Die erfindungsgemäße Batterie lässt sich also mit sehr einfachen Mitteln kostengünstig in großen Stückzahlen so herstellen, dass diese einen sicheren und zuverlässigen Betrieb ermöglicht, bei dem die Gefahr eines Thermal Runaways, eines Brandes oder einer Explosion weitgehend ausgeschlossen werden kann. Eine derartige Batterie eignet sich daher insbesondere zum Einsatz in einem zumindest teilweise elektrisch angetriebenen Fahrzeug als Traktionsbatterie, da hier entsprechend hohe Anforderungen sowohl an die Serientauglichkeit der Fertigung als auch an die Sicherheit der Batterie zu stellen sind.The battery according to the invention can thus be produced inexpensively in large quantities with very simple means so that it enables safe and reliable operation, in which the risk of a thermal runaway, a fire or an explosion can be largely excluded. Such a battery is therefore particularly suitable for use in an at least partially electrically driven vehicle as a traction battery, since correspondingly high demands are to be placed both on the series production capability and on the safety of the battery.
Die erfindungsgemäße Batterie erfüllt all dieses und ist daher als Traktionsbatterie besonders gut geeignet.The battery of the invention fulfills all this and is therefore particularly well suited as a traction battery.
Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Batterie ergeben sich dabei aus den restlichen abhängigen Unteransprüchen und werden anhand der Ausführungsbeispiele deutlich, welche nachfolgend unter Bezugnahme auf die Figuren näher beschrieben werden.Further advantageous embodiments of the battery according to the invention will become apparent from the remaining dependent claims and will be apparent from the embodiments, which are described below with reference to the figures.
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Abschließend ist es in der Darstellung der
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 102007004568 A1 [0005] DE 102007004568 A1 [0005]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010055599A DE102010055599A1 (en) | 2010-12-22 | 2010-12-22 | Battery for use as e.g. traction battery in partially electrically driven vehicle, in lithium ion technology, has frames comprising recess such that welded region is exposed between electrode stack and edge of battery single cells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010055599A DE102010055599A1 (en) | 2010-12-22 | 2010-12-22 | Battery for use as e.g. traction battery in partially electrically driven vehicle, in lithium ion technology, has frames comprising recess such that welded region is exposed between electrode stack and edge of battery single cells |
Publications (1)
Publication Number | Publication Date |
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DE102010055599A1 true DE102010055599A1 (en) | 2012-06-28 |
Family
ID=46508504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010055599A Withdrawn DE102010055599A1 (en) | 2010-12-22 | 2010-12-22 | Battery for use as e.g. traction battery in partially electrically driven vehicle, in lithium ion technology, has frames comprising recess such that welded region is exposed between electrode stack and edge of battery single cells |
Country Status (1)
Country | Link |
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DE (1) | DE102010055599A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013015749A1 (en) | 2013-09-21 | 2015-03-26 | Daimler Ag | Cell block for a battery |
DE102014019075A1 (en) | 2014-12-18 | 2016-06-23 | Daimler Ag | Cell block device for a motor vehicle battery |
DE102017130068A1 (en) | 2017-12-15 | 2019-06-19 | Erbslöh Aluminium Gmbh | Battery element with heat conducting element |
US10910613B2 (en) | 2015-06-12 | 2021-02-02 | Ford Global Technologies, Llc | Battery cell retention assembly and method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007004568A1 (en) | 2007-01-30 | 2008-07-31 | Robert Bosch Gmbh | Electrochemical cell, for hybrid vehicles or electrical vehicles, has connecting element, which is provided for used air evacuation duct and is integrated in outer skin |
-
2010
- 2010-12-22 DE DE102010055599A patent/DE102010055599A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007004568A1 (en) | 2007-01-30 | 2008-07-31 | Robert Bosch Gmbh | Electrochemical cell, for hybrid vehicles or electrical vehicles, has connecting element, which is provided for used air evacuation duct and is integrated in outer skin |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013015749A1 (en) | 2013-09-21 | 2015-03-26 | Daimler Ag | Cell block for a battery |
DE102014019075A1 (en) | 2014-12-18 | 2016-06-23 | Daimler Ag | Cell block device for a motor vehicle battery |
US10910613B2 (en) | 2015-06-12 | 2021-02-02 | Ford Global Technologies, Llc | Battery cell retention assembly and method |
DE102017130068A1 (en) | 2017-12-15 | 2019-06-19 | Erbslöh Aluminium Gmbh | Battery element with heat conducting element |
WO2019115604A1 (en) | 2017-12-15 | 2019-06-20 | Erbsloeh Aluminium Gmbh | Battery element having a thermal conduction element |
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Legal Events
Date | Code | Title | Description |
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R005 | Application deemed withdrawn due to failure to request examination |