WO2012010347A1 - Module de batterie doté d'une plaque de pression élastique - Google Patents

Module de batterie doté d'une plaque de pression élastique Download PDF

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Publication number
WO2012010347A1
WO2012010347A1 PCT/EP2011/058343 EP2011058343W WO2012010347A1 WO 2012010347 A1 WO2012010347 A1 WO 2012010347A1 EP 2011058343 W EP2011058343 W EP 2011058343W WO 2012010347 A1 WO2012010347 A1 WO 2012010347A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure plate
battery module
battery
axis
battery cells
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.)
Ceased
Application number
PCT/EP2011/058343
Other languages
German (de)
English (en)
Inventor
Andreas Ruehle
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 Battery Systems GmbH
SB LiMotive Co Ltd
Original Assignee
SB LiMotive Germany GmbH
SB LiMotive 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 SB LiMotive Germany GmbH, SB LiMotive Co Ltd filed Critical SB LiMotive Germany GmbH
Publication of WO2012010347A1 publication Critical patent/WO2012010347A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries
    • 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
    • H01M10/02—Details
    • 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
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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

Definitions

  • the present invention relates to a battery module having a plurality of battery cells, preferably lithium-ion battery cells, in which by means of at least one pressure plate, a pressure on the battery cells is exercised.
  • the invention further relates to a motor vehicle with a battery module according to the invention.
  • Batteries for storing electrical energy in particular
  • Lithium-ion batteries expand during charging and contract when unloading. These volume or length changes are due to the storage and removal processes of lithium ions in the
  • Active materials of the electrodes conditionally. By incorporating lithium into the carbon material, the material expands. This increase in volume is transmitted via the battery cell shell with appropriate deformability of the cell further out and thus leads to a change in at least one geometric dimension of the battery. This is especially true for
  • Cathode material, separator, anode material, if necessary film may be exposed to mechanical stress. The consequence of this is an increase in electrical resistance in the battery and thus reduced performance.
  • Lithium-ion batteries to drive motor vehicles, many individual electrochemical battery cells are assembled and supported. This can be done by placing the individual cells in a housing, a frame and / or wrapping the individual cells with a Verspannband. Between the Verspannband and the outer single cells can to
  • Pressurization of a pressure to be arranged a pressure plate Such an example is known from EP 1 760 806 A2.
  • the contact pressure should counteract the described expansion of the battery cells and prevent the unwanted detachment of individual layers of the electrode materials.
  • Such contact pressure is used in particular for battery cells for hybrid vehicles application.
  • a battery module which comprises a plurality of battery cells, preferably lithium-ion battery cells, which are arranged along a first axis to form a stack.
  • Battery module at least one pressure plate, which is arranged on an outer side of an outermost battery cell of the stack.
  • a clamping unit surrounds the plurality of battery cells together with the at least one pressure plate and clamps them together.
  • the at least one pressure plate is resilient and exerts in the braced by the clamping unit a restoring force on the clamping unit.
  • the battery module according to the invention has the advantage that a contact pressure on the outermost battery cell can be made more homogeneous. As a result, a better efficiency over the life of the battery module or the battery cells is achieved.
  • the restoring force is preferably along the first axis or her
  • the restoring force of the pressure plate preferably counteracts the force exerted by the tensioning unit.
  • the battery cells are preferably arranged one behind the other in a stack. Under the outermost sides of the plurality of battery cells, the free ends of the stack are designated.
  • the pressing plates press on the outer side of the first battery cell, which is opposite to the side of the first battery cell, which is adjacent to the second battery cell of the stack, and the outer side of the last battery cell, which is opposite to the side of the last battery cell which is adjacent to the penultimate battery cell of the stack.
  • the spring force of the prestressed pressure plate preferably depends on the distance to a center axis of the pressure plate, wherein the center axis extends along a second axis perpendicular to the first axis and / or different from the first axis.
  • the relevant central axis is preferably the vertical center axis of the pressure plate.
  • the first axis is preferably the x-axis and the second axis is the z-axis.
  • other axes can be used, which are preferably formed perpendicular to each other.
  • the restoring force can also be formed differently in segments.
  • the vertical center region of the pressure plate may be flat and have no restoring force and only the subsequent thereto
  • the at least one pressure plate is without tension by the bracing convex on the corresponding outermost side of the plurality of battery cells.
  • the pressure plate may preferably have the form of a leaf spring.
  • the thickness of the pressure plate is preferably in the range of 1 mm to 6 mm. More preferably, it is between 1.5 to 4 mm, more preferably about 2 mm.
  • the bracing unit preferably comprises a bracing band and a
  • Coupling unit for connecting and clamping two ends of the
  • Verspannbandes As a result of this design of the clamping unit, the battery cells and the pressure plate can be connected to one another in a simple and efficient manner and pressurized. For this purpose, only the coupling unit must be designed such that the bracing after coupling can be further braced.
  • the radius of curvature of the pressure plate is preferably in the plane or a parallel plane of the course of the Verspannbandes.
  • the pressure distribution on the outer side of a battery cell which bears against the at least one pressure plate is preferably substantially homogeneous, more preferably homogeneous in the context of measurement inaccuracy.
  • battery in this application also includes battery systems, accumulator batteries, accumulators, accumulator systems, in particular Li-ion systems or Li-polymer ion systems.
  • FIG. 1 shows a battery module with a plurality of battery cells and a pressure plate of the prior art
  • FIG. 2 shows a pressure distribution on the outer side of the battery module of the prior art
  • FIG. 3 shows a pressure plate according to the invention
  • Figure 4 shows a pressure plate according to the invention with battery cell
  • FIG. 5 shows an improved pressure distribution on the outer side of a battery module according to the invention with a pressure plate of Figure 3.
  • the battery module 1 comprises a plurality of battery cells 10, wherein the battery cells 10 are arranged in a package or in a stack.
  • the battery cells 10 are arranged one behind the other in a first direction, here the x-direction.
  • a battery especially one
  • Lithium-ion battery better life over life force must be applied to the battery cells.
  • This is usually realized by a tension of the battery cells 10 to form a battery module 1.
  • the battery module 1 of Figure 1 in addition to a clamping unit 30 pressure plates 20, which are arranged at the free ends of the stack of battery cells 10. By the pressure plates 20, the pressure is distributed by the tensioning unit 30 on the side surfaces of the outer battery cells 10.
  • the tension unit 30 has the function of applying and transmitting power.
  • the bracing unit 30 is non-limiting realized by a bracing 31 and a coupling unit 32.
  • the coupling unit 32 connects by way of example two ends of the tensioning band 31 with one another and urges the tensioning band 31 with a force.
  • the coupling unit 32 may, for example, have male and female components that intermesh for coupling.
  • the coupling unit 32 can also comprise a thread, for example a worm thread in the manner of a worm thread clamp, with which the bracing strip 31 is braced. But the tension can also be done in other ways.
  • the pressure plate 20 has the function to distribute the force evenly on the outer side surface of the corresponding battery cell 10.
  • FIG. 1 shows the use of a straight pressure plate 20. If, as shown in Figure 1, the battery cells 10 are arranged in the x-direction one behind the other, is a first pressure plate 20 on the outer side 1 1 of the first battery cell 10 of the stack, which is not adjacent to another battery cell 10. Likewise, a second pressure plate 20 on the outer side 1 1 of the last
  • Battery cell 10 of the stack abut.
  • the pressure plate 20 extends in Figure 1 in the yz plane.
  • the bracing 31 runs around the battery cells 10 and the pressure plates 20 around, in Figure 1 in an xy plane, preferably halfway up the battery cells 10.
  • the bracing 31 can also be performed differently around the battery cells 10, z. B. in the xz plane, so on the lid and the bottom of each battery cell 10th
  • FIG. 1 shows further connecting elements, which are purely optional.
  • the battery cell stack can be placed in a frame 40 having front and back 41 and connecting pieces 43 between front and back.
  • between each two battery cells 10 more battery cells 10 can be placed in a frame 40 having front and back 41 and connecting pieces 43 between front and back.
  • Plates 42 may be arranged.
  • the rib structure of the pressure distribution shown in FIG. 2 is based on the use of a frame 40 with corresponding end surfaces 41
  • the pressure plate 20 is located directly on the outer side 1 1 of the first and last battery cell 10 of the stack.
  • FIG. 3 shows a pressure plate 20 according to the invention, FIG. 4 together with a battery cell 10 before the tensioning.
  • the pressure plate 20 is biased and resilient.
  • the pressure plate 20 has a radius. It is arched. It is convex on the outside 1 1 of the outermost battery cell 10 of the stack.
  • the curvature runs along the y-axis of FIG. 1.
  • the curvature may also be formed in segments, that is, partial segments of the pressure plate 20 may have a different radius of curvature.
  • FIG. 3 shows a pressure plate 20 according to the invention, FIG. 4 together with a battery cell 10 before the tensioning.
  • the pressure plate 20 is biased and resilient.
  • the pressure plate 20 has a radius. It is arched. It is convex on the outside 1 1 of the outermost battery cell 10 of the stack.
  • the curvature runs along the y-axis of FIG. 1.
  • the central axis 50 of the pressure plate 20 is represented by the lowest point of the pressure plate 20, which has a slope of zero, parallel to the plane of the surface of the outer battery cell 10.
  • a center of curvature of the pressure plate 20 is preferably located exactly on the vertical center axis 50 of the pressure plate 20, but can also slightly different.
  • Pressure plate 20 are executed with beads. These can be designed in any direction.
  • Battery cell 10 and the outer region of the pressure plate 20 is spaced from the surface of the battery cell 10. This is exactly the area in which the battery cell 10 expands the most.
  • the pressure plate 20 is elastic and has a restoring force, which depends on the distance to the central axis 50. The restoring force acts along the axis of the stacking
  • the radius of curvature of the pressure plate 20 is perpendicular to the outside of the outer battery cell 10 and on the Verspannband 31 and extends in the plane or parallel to the plane of the course of the
  • Bracing band 31 in x-y plane.
  • the radius of curvature also runs in an x-y plane.
  • Figure 5 shows the result of a measurement of the improved pressure distribution with the curved pressure plate of Figures 3 and 4.
  • the dark area, the corresponds to a region of high pressure, in the middle of the pressure plate is due to the curvature of the pressure plate 20.
  • the optimal shape of the pressure plate 20 may be, for example, using the
  • Finite element method can be calculated in order to achieve a uniform distribution of forces. The force needed to compress the
  • Battery cells 10 and the spring characteristic of the pressure plate 20 are parameters of optimization.
  • the force can be between 5000-10000 N, preferably it is 7000 N.
  • Pressing plate 20 substantially thinner at the same power transmission as a straight pressure plate 20 may be formed.
  • a pressure plate 20 of the same material according to the invention requires for pressurization only a thickness of 1 -6 mm, preferably 1, 5-4 mm, more preferably about 2 mm. Thus, the pressure plate 20 can be made thinner, lighter and cheaper.

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  • 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)

Abstract

L'invention concerne un module de batterie (1) comprenant une pluralité d'éléments de batterie (10), de préférence des éléments de batterie aux ions lithium, disposés en une pile le long d'un premier axe (x). Le module de batterie (1) comporte en outre au moins une plaque de pression (20), disposée sur une face extérieure (11) d'un élément de batterie (10) le plus extérieur de la pile. Une unité de serrage (30) entoure la pluralité d'éléments de batterie (10) conjointement avec la ou les plaques de pression (20) et les serre ensemble. Selon l'invention, la ou les plaques de pression (20) sont conçues élastiques et exercent, à l'état serré par l'unité de serrage (30), une force de rappel sur l'unité de serrage (30). L'invention concerne en outre un véhicule automobile équipé d'un module de batterie (1) correspondant.
PCT/EP2011/058343 2010-07-22 2011-05-23 Module de batterie doté d'une plaque de pression élastique Ceased WO2012010347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010031641A DE102010031641A1 (de) 2010-07-22 2010-07-22 Batteriemodul mit einer federnden Anpressplatte
DE102010031641.5 2010-07-22

Publications (1)

Publication Number Publication Date
WO2012010347A1 true WO2012010347A1 (fr) 2012-01-26

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PCT/EP2011/058343 Ceased WO2012010347A1 (fr) 2010-07-22 2011-05-23 Module de batterie doté d'une plaque de pression élastique

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DE (1) DE102010031641A1 (fr)
WO (1) WO2012010347A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226161A1 (de) 2013-12-17 2015-06-18 Robert Bosch Gmbh Verspanneinheit für ein Batteriemodul
WO2017058869A1 (fr) 2015-09-29 2017-04-06 Acorda Therapeutics, Inc. Compositions à libération prolongée de 4-aminopyridine
CN108630846A (zh) * 2017-03-17 2018-10-09 福特全球技术公司 电池单元压紧方法及总成
WO2018186866A1 (fr) 2017-04-06 2018-10-11 Cobb Joseph E Jr Compositions à libération prolongée de 4-aminopyridine
CN114128024A (zh) * 2019-06-21 2022-03-01 赛昂能源有限公司 用于向电化学装置施加力的方法、系统和装置
US20230075961A1 (en) * 2020-09-22 2023-03-09 Audi Ag Energy storage assembly for a motor vehicle
EP4386942A4 (fr) * 2022-01-11 2025-01-08 LG Energy Solution, Ltd. Module de batterie et bloc-batterie le comprenant

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014212113A1 (de) 2014-06-24 2015-12-24 Robert Bosch Gmbh Verspanneinheit für ein Batteriemodul
DE102014221944A1 (de) 2014-10-28 2016-04-28 Robert Bosch Gmbh Spannvorrichtung zum Verspannen von Speichereinheiten eines elektrischen Energiespeichermoduls und entsprechendes Energiespeichermodul
DE102014225069A1 (de) 2014-12-05 2016-06-09 Robert Bosch Gmbh Bauteil zur Kraftaufnahme und/oder Kraftverteilung in einem Batteriezellenmodul
DE102014118171B4 (de) 2014-12-08 2024-12-19 KUNKEL + Partner Ingenieure GmbH Batteriezelle zum modularen Aufbau einer wiederaufladbaren Metall-Luft Batterie, Halteeinrichtung für eine Batteriezelle und Batteriemodul mit mehreren Batteriezellen
DE102015210122A1 (de) * 2015-06-02 2016-12-08 Robert Bosch Gmbh Vorrichtung und Verfahren zum Verspannen von Batteriezellen sowie Batteriegehäuse, Batteriepack, Batteriemodul und Fahrzeug
DE102017108714A1 (de) 2017-04-24 2018-10-25 Kunkel + Partner GmbH & Co. KG Batteriezelle zum modularen Aufbau einer wiederaufladbaren Metall-Luft Batterie, Halteeinrichtung für eine Batteriezelle und Batteriemodul mit mehreren Batteriezellen
JP6752190B2 (ja) * 2017-11-24 2020-09-09 本田技研工業株式会社 バッテリモジュール
FR3113192B1 (fr) * 2020-07-31 2022-08-12 Commissariat Energie Atomique Dispositif et procédé de contention pour module d’accumulateur électrochimique prismatique
DE102022101725A1 (de) 2022-01-25 2023-07-27 Webasto SE Batteriemodul und Verfahren zum Herstellen eines Batteriemoduls

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE7002943U (de) * 1970-01-29 1971-07-08 Bosch Gmbh Robert Gasdichter blei-akkumulator mit kunststoffkasten.
DE4226428A1 (de) * 1992-08-10 1994-02-17 Friedhelm Mesmer Mechanische Spannvorrichtung für thermoplastische Batterieblockkästen
WO2005008825A2 (fr) * 2003-07-11 2005-01-27 Stefan Nettesheim Dispositif de serrage destine a une pile d'une pluralite de cellules electrochimiques et procede de montage d'un tel dispositif
WO2006104442A1 (fr) * 2005-04-01 2006-10-05 Nilar International Ab Boîtier pour une batterie etanche
EP1760806A2 (fr) 2005-09-05 2007-03-07 Samsung SDI Co., Ltd. Module de batterie ayant un dispositif amélioré d'accouplement d'un ensemble d'unités de batteries

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7002943U (de) * 1970-01-29 1971-07-08 Bosch Gmbh Robert Gasdichter blei-akkumulator mit kunststoffkasten.
DE4226428A1 (de) * 1992-08-10 1994-02-17 Friedhelm Mesmer Mechanische Spannvorrichtung für thermoplastische Batterieblockkästen
WO2005008825A2 (fr) * 2003-07-11 2005-01-27 Stefan Nettesheim Dispositif de serrage destine a une pile d'une pluralite de cellules electrochimiques et procede de montage d'un tel dispositif
WO2006104442A1 (fr) * 2005-04-01 2006-10-05 Nilar International Ab Boîtier pour une batterie etanche
EP1760806A2 (fr) 2005-09-05 2007-03-07 Samsung SDI Co., Ltd. Module de batterie ayant un dispositif amélioré d'accouplement d'un ensemble d'unités de batteries

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226161A1 (de) 2013-12-17 2015-06-18 Robert Bosch Gmbh Verspanneinheit für ein Batteriemodul
WO2017058869A1 (fr) 2015-09-29 2017-04-06 Acorda Therapeutics, Inc. Compositions à libération prolongée de 4-aminopyridine
US12029820B2 (en) 2015-09-29 2024-07-09 Acorda Therapeutics, Inc. Sustained release compositions of 4-aminopyridine
CN108630846A (zh) * 2017-03-17 2018-10-09 福特全球技术公司 电池单元压紧方法及总成
WO2018186866A1 (fr) 2017-04-06 2018-10-11 Cobb Joseph E Jr Compositions à libération prolongée de 4-aminopyridine
CN114128024A (zh) * 2019-06-21 2022-03-01 赛昂能源有限公司 用于向电化学装置施加力的方法、系统和装置
US12394817B2 (en) 2019-06-21 2025-08-19 Sion Power Corporation Methods, systems, and devices for applying forces to electrochemical devices
US20230075961A1 (en) * 2020-09-22 2023-03-09 Audi Ag Energy storage assembly for a motor vehicle
EP4386942A4 (fr) * 2022-01-11 2025-01-08 LG Energy Solution, Ltd. Module de batterie et bloc-batterie le comprenant

Also Published As

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