EP2777086A1 - Élément de batterie comprenant un corps de remplissage et un additif, module d'éléments de batterie, batterie et véhicule automobile - Google Patents

Élément de batterie comprenant un corps de remplissage et un additif, module d'éléments de batterie, batterie et véhicule automobile

Info

Publication number
EP2777086A1
EP2777086A1 EP12759153.5A EP12759153A EP2777086A1 EP 2777086 A1 EP2777086 A1 EP 2777086A1 EP 12759153 A EP12759153 A EP 12759153A EP 2777086 A1 EP2777086 A1 EP 2777086A1
Authority
EP
European Patent Office
Prior art keywords
battery cell
battery
additive
lithium
filling body
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Withdrawn
Application number
EP12759153.5A
Other languages
German (de)
English (en)
Inventor
Thomas Woehrle
Markus Kohlberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
Samsung SDI Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH, Samsung SDI Co Ltd filed Critical Robert Bosch GmbH
Publication of EP2777086A1 publication Critical patent/EP2777086A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01M50/128—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 inorganic 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
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery cell and a battery cell module or a battery, which or at least one of
  • the present invention relates to battery cells according to the invention. Furthermore, the present invention relates to
  • the present invention is particularly related to lithium-ion battery cells or lithium-ion batteries or corresponding battery cell modules, also to rechargeable lithium batteries with a lithium anode.
  • Lithium-ion battery cells have at least one positive electrode, the
  • lithium-ion cell lithium-ion polymer cell
  • the lithium-ion cell, battery, accumulator and system are used largely synonymously. It is a galvanic with a lithium-ion cell
  • Meant element containing at least one electrode which can reversibly store or store lithium ions.
  • Lithium ion takes place, the presence of a so-called
  • Lithium-ion conductive salt necessary. Practical with all current ones Lithium-ion cells both in the consumer sector (mobile phone, MP3 player or Powertools) and in the vehicle sector (HEV, PHEV, EV, micro-hybrid) is preferably used as the conductive salt lithium hexafluorophosphate (LiPF 6 ). This LiPF 6 is extremely reactive to water and occurs in several
  • a housing with a metallic portion is used, wherein the metal foil, or the metal sheet is the actual barrier to air humidity.
  • One prior art lithium ion cell is one
  • hardcase battery case which for example
  • the wall thicknesses of the hardcase are more than 0.1 mm thick.
  • the metal is the actual 100% barrier against water diffusion from the outside into the cell interior.
  • the hardcase case is rectangular except for small radii, but the introduced electrode ensemble has larger radii at the edge due to winding of the electrodes. Thereby, there is a gap between the prismatic cell case and the rounded electrode ensemble in which the wound negative and positive electrodes are separated with a separator. This gap represents a dead volume, which in the lower
  • Lithium-ion battery electrolyte is about 1, 25 g / ml. Some of these dead volumes are massive or semi-massive
  • LiPF 6 conductive salt protects the LiPF 6 conductive salt from decomposition, as well as flame retardant additives or additives that prevent lithium plating.
  • additives for use in lithium-ion cells are known, for example, from the document "A review of electrolyte additives for lithium-ion batteries. J.Pow.Sources-162-2006-1379-1394 "in which additives are used in a lithium-ion cell to improve the heat resistance of the LiPF 6
  • the Protecting cathode material from dissolution of structural components and overcharging and physical properties such as ionic conductivity, viscosity (thick liquid) and wettability of the
  • Polyolefin separator to improve.
  • the additives can be added to the electrolyte only in low concentrations due to their influence on cell chemistry. Usually only 0.5 to 3 weight percent are used. As a result, these chemicals are limited in their effect. However, for example, if an overcharge additive is used at 10% in the electrolyte formulation, this additive will harm others
  • a battery cell is provided with a housing, which has an electrode ensemble in its interior, wherein a cavity bounded by a housing wall and the electrode ensemble in the housing is at least partially filled by at least one filler, the filler contains at least one additive, wherein the filler is designed to open from a temperature greater than an opening temperature and release the additive into the interior of the cell.
  • the electrode ensemble is, for example, an electrode winding with a separator layer arranged between the electrodes.
  • the electrode ensemble can also comprise plate-shaped electrodes.
  • the packing itself is a hollow packing of a solid material, preferably closed on all sides, so that no gas or electrolyte can penetrate into the packing.
  • the housing of the battery cell is preferably an aluminum or
  • Stainless steel-based fixed housing which is also referred to in technical usage as a hardcase.
  • the filling body has predetermined breaking points which open at a temperature above the opening temperature.
  • the predetermined breaking points are formed as material weakening, weld or flow seam.
  • the opening temperature 1 is 10 ° C.
  • the additive can partially stabilize the system from the inside in the event of an overload, for example with LiBoB ([bis (oxalato) borate]), which, when the cell is overloaded and the high temperatures occurring in the cell, carbon dioxide (C0 2 ) can release. Furthermore, the additive can advantageously reduce the lithium plating. Especially with an overcharge of the cell, more or less strongly metallic lithium can be deposited on the anode side, which reacts exothermically with electrolytes and also dangerous dendrites between them
  • the cathode material would advantageously be protected. It may, for example, N, N '-dicyclohexylcarbodiimide be used which intercept preferably as hydrofluoric acid (HF) and therefore advantageous to attack and destabilization of the cathode grid prevented during overcharge.
  • HF hydrofluoric acid
  • the electrode ensemble contains a conductive salt and the additive is designed in such a way to stabilize the conductive salt.
  • a conductive salt is Lithium hexa-fluorophosphate (LiPF 6 ) used.
  • LiPF 6 Lithium hexa-fluorophosphate
  • the present invention is not limited to this conductive salt.
  • the stabilization of the conductive salt can be done for example by tris (2,2,2-trifluoroethyl) phosphite (TTFP).
  • TTFP tris (2,2,2-trifluoroethyl) phosphite
  • the conductive salt LiPF 6 is extremely reactive to moisture and hydrolysis takes place in several stages up to hydrogen fluoride (HF).
  • the additive is designed such that it has a fire retardant property.
  • the fire-retarding property of the additive is made possible by fluorinated species such as tris (2,2,2-trifluoroethyl) phosphates.
  • the material of the filling body is a polyethylene, glass or
  • Polypropylene blow molding is. It is advantageous that polyethylene, glass or polypropylene blow mold are resistant to acids and alkalis.
  • the present invention further relates to a battery or a
  • the present invention relates to a motor vehicle, which comprises at least one battery cell according to the invention and / or a battery or a battery cell module, wherein the battery cell or the battery or the battery cell module is connected to a drive system of the motor vehicle.
  • FIG. 1 shows a battery cell according to the invention in a sectional view
  • Figure 2 is a schematic representation of the charging of the
  • Lithium-ion cell (prior art) and
  • FIG. 3 is a schematic representation of the discharge of the
  • Lithium-ion cell (prior art).
  • FIG. 1 shows a battery cell according to the invention, in particular a battery cell
  • Lithium-ion battery cell it can be seen in the housing 10, an electrode ensemble
  • Electrode ensemble 20 is included. On both sides of the electrode ensemble 20 are a first
  • Collector 30 and a second collector 40 connected. From a housing 10 terminating at the top of a housing cover 1 1 projecting connected to the first collector 30 first terminal 31 and a connected to the second collector 40 second terminal 41 for connection of electrical units protrude.
  • a first lateral cavity 32 and a second lateral cavity 42 is present. Likewise, between the top of the
  • Electrode ensembles 20 and the housing cover 1 1 an upper cavity 50 is present.
  • These cavities 32, 42 and 50 are inventively filled by packing 60 substantially. They have a substantially lower density than the density of the material of the housing 10.
  • the packing 60 may be made of polyethylene (PE), glass or polypropylene blow molded article (PP), for example.
  • the said cavities 32, 42, 50 are filled with packing 60, so that, for example, in an overcharge of the battery cell gases released in the
  • Voids 32, 42, 50 can flow and therefore already at an initial overload-related release of gases a blatant pressure increase in the
  • FIG. 2 shows the charging and FIG. 3 shows the discharging of a lithium-ion cell 1.
  • the lithium-ion cell 1 has a positive electrode 2 (cathode) and a negative electrode 4 (anode).
  • the positive electrode 2 has a positive
  • Collector 6 and the negative electrode 4 has a negative collector 8.
  • the two electrodes 2, 4 are electrically connected via an external circuit 12 with a voltage measuring device measuring the voltage between the electrodes 2, 4.
  • the positive collector 6 is made of aluminum, the
  • lithium 10 is incorporated and removed.
  • the incorporation of lithium 10 is done by the intercalation of the negative electrode 4 during the charging process ( Figure 1) and the removal of lithium by the deintercalation of the negative electrode 4 during the discharge process ( Figure 2) for the power supply of electrical

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un élément de batterie comprenant un boîtier (10) à l'intérieur duquel est placé un ensemble d'électrodes (20), un espace creux délimité à l'intérieur du boîtier (10) par une paroi du boîtier et l'ensemble d'électrodes (20) étant rempli au moins partiellement par un corps de remplissage (60) qui contient au moins un additif (70). Selon l'invention, ce corps de remplissage (60) est conçu pour s'ouvrir à partir d'une température supérieure à une température d'ouverture et pour libérer l'additif (70) à l'intérieur de l'élément. L'invention concerne en outre une batterie ou un module d'éléments de batterie comprenant plusieurs des éléments de batterie selon l'invention, ainsi qu'un véhicule automobile qui présente au moins un élément de batterie selon l'invention et/ou une batterie ou un module d'éléments de batterie selon l'invention.
EP12759153.5A 2011-11-09 2012-09-17 Élément de batterie comprenant un corps de remplissage et un additif, module d'éléments de batterie, batterie et véhicule automobile Withdrawn EP2777086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011086000A DE102011086000A1 (de) 2011-11-09 2011-11-09 Batteriezelle, Batteriezellenmodul, Batterie und Kraftfahrzeug
PCT/EP2012/068215 WO2013068162A1 (fr) 2011-11-09 2012-09-17 Élément de batterie comprenant un corps de remplissage et un additif, module d'éléments de batterie, batterie et véhicule automobile

Publications (1)

Publication Number Publication Date
EP2777086A1 true EP2777086A1 (fr) 2014-09-17

Family

ID=46851519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12759153.5A Withdrawn EP2777086A1 (fr) 2011-11-09 2012-09-17 Élément de batterie comprenant un corps de remplissage et un additif, module d'éléments de batterie, batterie et véhicule automobile

Country Status (3)

Country Link
EP (1) EP2777086A1 (fr)
DE (1) DE102011086000A1 (fr)
WO (1) WO2013068162A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206058A1 (de) * 2014-03-31 2015-10-01 Bayerische Motoren Werke Aktiengesellschaft Batteriezelle
DE102019215128A1 (de) * 2019-10-01 2021-04-01 Volkswagen Aktiengesellschaft Elektrochemischer Energiespeicher
DE102023115256A1 (de) * 2023-06-12 2024-12-12 Bayerische Motoren Werke Aktiengesellschaft Baugruppe für einen Energiespeicher
DE102024123701A1 (de) * 2024-08-20 2026-02-26 Schaeffler Technologies AG & Co. KG Batteriezellgehäuse mit in einer Schweißnaht integrierten Berstfunktion; Batteriesystem; sowie Herstellverfahren

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100570625B1 (ko) * 2004-07-28 2006-04-12 삼성에스디아이 주식회사 이차 전지
JP5150193B2 (ja) * 2007-10-15 2013-02-20 シャープ株式会社 電池パック
DE102008001707A1 (de) * 2008-05-09 2009-11-12 Robert Bosch Gmbh Energiewandler- und/oder Energiespeichervorrichtung mit fluorabsorberierender Ummantelung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013068162A1 *

Also Published As

Publication number Publication date
DE102011086000A1 (de) 2013-05-16
WO2013068162A1 (fr) 2013-05-16

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Owner name: ROBERT BOSCH GMBH

Owner name: SAMSUNG SDI CO., LTD.

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