WO2013121027A1 - Dispositif d'accumulation de l'énergie comprenant au moins un élément accumulateur et procédé de compensation du volume des matériaux d'électrode d'un tel élément accumulateur - Google Patents

Dispositif d'accumulation de l'énergie comprenant au moins un élément accumulateur et procédé de compensation du volume des matériaux d'électrode d'un tel élément accumulateur Download PDF

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Publication number
WO2013121027A1
WO2013121027A1 PCT/EP2013/053137 EP2013053137W WO2013121027A1 WO 2013121027 A1 WO2013121027 A1 WO 2013121027A1 EP 2013053137 W EP2013053137 W EP 2013053137W WO 2013121027 A1 WO2013121027 A1 WO 2013121027A1
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WO
WIPO (PCT)
Prior art keywords
textile
energy storage
storage device
volume
volume compensation
Prior art date
Application number
PCT/EP2013/053137
Other languages
German (de)
English (en)
Inventor
Florian Neumann
Thomas Gerhard Gries
Julia DRILLKENS
Karolina CABAN-KUCHARCZYK
Dirk Uwe Sauer
Original Assignee
Rheinisch-Westfälische Technische Hochschule Aachen
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 Rheinisch-Westfälische Technische Hochschule Aachen filed Critical Rheinisch-Westfälische Technische Hochschule Aachen
Publication of WO2013121027A1 publication Critical patent/WO2013121027A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/02—Details
    • 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
    • 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 invention is based on an energy storage device having at least one electrical or electrochemical storage cell for storing electrical energy, wherein the storage cell has at least one electrode arrangement.
  • the invention is further based on a method for volume compensation of at least one volume-changing electrode arrangement of an electrical or electrochemical storage cell.
  • Electrical energy stores such as battery, accumulator (short battery) and (double-layer) capacitor usually consist of a plurality of memory cells, which are connected in parallel and / or in series to provide a desired voltage and or a desired current flow can.
  • the at least one memory cell is a rechargeable memory cell
  • repeated expansion and contraction may result in a structural change of that cell and its electrical interconnection within the energy storage device, which may reduce storage capacity or even generally impair the function of the energy storage device ( "aging").
  • energy storage devices with high energy density are needed.
  • the energy density of a cell-level Li-ion battery today is up to 230 watt-hours per kg of mass (230 Wh / kg).
  • Conventional Li-ion batteries currently use carbon / graphite anodes. For some mobile applications, however, the energy density of these batteries is insufficient.
  • Anodes made of silicon have up to ten times higher energy densities for Li-ion batteries compared to carbon / graphite anodes.
  • Si anodes or mixed carbon / graphite and silicon materials have a significant volume change over the charge and discharge cycles, which can lead to the above problems.
  • the invention has for its object to provide a simple structure energy storage device and a simple but efficient method in which a deformation of the volume-changing electrode material in at least one memory cell of this energy storage device, as reversible as possible.
  • the storage cell has at least one volume compensation element which is reversibly compressible and / or decompressible in at least one orientation for compensating for a change in volume of the at least one electrode arrangement.
  • the volume compensation element is designed as a textile, more precisely as a three-dimensional textile.
  • a three-dimensional textile can also be referred to as a textile volume structure.
  • the three-dimensional textile brings a restoring force against the direction in which it is compressed.
  • the three-dimensional textile is formed as a spacer textile, which is a series of a plurality of spaced apart textile layers.
  • the volume of the space between the layers is variable, since there is a compressible fluid in this space between the pile threads or the middle portions of these pile threads.
  • this fluid is a gas, in particular dry air or a protective gas.
  • the pile threads have a well-defined compressive stiffness which, on the one hand, permits the two layers to be pressed together transversely to their extent, but on the other hand also brings about a well-defined restoring force.
  • the at least one memory cell of the electrical energy storage device is an electric charge storage cell or an electrochemical energy storage cell. The decisive factor is that it can absorb and / or release electrical energy.
  • An example of the electric charge storage cell is a capacitor, in particular, an electrochemical double-layer capacitor;
  • Examples of electrochemical energy storage cells are the battery cell and the accumulator cell, ie a rechargeable battery cell, in particular also battery technologies based on lithium.
  • the electrical energy storage device is a battery or an accumulator.
  • the at least one memory cell is in particular a memory cell of an electrical energy storage device which changes the volume of the electrodes during a charging and / or discharging process. This volume change is completely or at least partially compensated by the volume compensation element within the electrical energy storage device such that the cell volume itself remains virtually unchanged.
  • An example of a memory cell that significantly changes the volume of at least one of the two electrodes during the charging and discharging process is the cell of a lithium-ion battery (Li-ion battery) with a silicon-containing electrode (Si electrode). , in particular a Si anode. In particular, this also applies to mixed materials of carbon and Silicon in all possible mixing ratios and possibly various other additives to the electrode material.
  • the electrical energy storage device is a lithium-ion battery, preferably a lithium-ion battery with silicon-containing anode.
  • Li-ion rechargeable Li-ion batteries with silicon anodes have up to ten times higher energy densities than carbon / graphite ones. In combination with conventional or unchanged cathodes, the energy density of the entire battery can be increased by up to 20%; with the development of new cathode materials even more than 20% are possible.
  • Si-containing anodes show significant volume changes upon cyclization, which can be up to 400% for pure Si anodes. Electrode materials subject to high reversible volume expansion upon cyclization typically undergo very rapid aging because the active region of the electrode loses its structure, the contact between the particles of active material can be lost, or the contact of the active material Area is lost to the electrolyte or the current collector (contact element).
  • the volume compensation element is preferably a substrate of different layers.
  • a textile substrate of different layers is in particular a layer-dominated thread system.
  • a connecting thread system (referred to below as "pile threads") is preferably arranged.
  • the textile is a woven or knitted or knitted fabric.
  • Such textiles can be made from a wide variety of yarns or combinations of such yarns.
  • the spacer textile is in particular a spacer fabric or a spacer fabric or a spacer fabric.
  • the length of the pile threads is selected such that a defined distance is established between the layers formed as cover surfaces. This distance should, for example, be between 0 and 70 mm, preferably between 0 and 15 mm.
  • the spacer textile has two textile layers which are spaced apart from one another and pile threads aligned transversely to the two layers, wherein the pile threads connect the two layers and keep them spaced by their rigidity.
  • the pile threads are preferably distributed regularly over the surfaces of the textile layers. This ensures a uniform restoring force over the entire surface.
  • all pile threads are aligned substantially parallel to each other or more groups of pile threads are present, the pile threads of each group are mutually aligned substantially parallel to each other. Furthermore, it is preferably provided that at least a part of the pile threads are arranged in at least one orientation V-shaped and / or crosswise. Such alignment of the pile threads increases the stability against shear forces.
  • the three-dimensional textile is asymmetrically designed with advantage, wherein the top surfaces are made of different materials, and / or their top surfaces have different bindings.
  • at least one yarn for forming the two- or three-dimensional textile consists of a material that satisfies the requirements of the boundary conditions in the cell. These include a sufficiently high glass transition temperature, which is above the operating temperature, chemical resistance to the chemicals occurring, recovery after stress, and sufficient flexural elasticity, which allows processing of the material as a pulp on the corresponding textile machines.
  • Possible candidate materials include, but are not limited to:
  • PET Polyethylene terephthalate
  • PTFE Polytetrafluoroethylene
  • PVAL Polyvinyl alcohol
  • PES Polyethersulfone
  • At least one of the yarns of the three-dimensional textile consists of an electrically conductive material.
  • the at least one memory cell has at least one stack of stacked electrode arrangements. In this case, provision is made in particular for the stack to be supported by means of one of the electrode arrangements arranged on its end face directly or via at least one intermediate layer on a surface area of the volume compensation element assigned to it.
  • the at least one volume compensation element lies under pretension together with the at least one memory cell in the at least one support structure.
  • the volume compensation takes place by means of a volume compensation element which is reversibly compressible and / or decompressible.
  • the volume compensation element is a three-dimensional textile. If the volume of the at least one memory cell increases as it expands in the direction of the element or textile, then this compresses the element or textile; If the volume of the memory cell decreases by a reduction of the expansion (a shrinkage) in this direction, the textile returns the memory cell by a corresponding restoring force.
  • the memory cell is in particular a memory cell which changes its volume during a charging and / or discharging process.
  • the invention thus relates to the use of a reversibly compressible and / or decompressible volume compensation element, more precisely a three-dimensional textile, for volume compensation of at least one volume-changing electrode of a memory cell in an energy storage device.
  • the textile is formed as a three-dimensional spacer textile, which is a series of several spaced-apart textile layers and transverse to the layers aligned pile threads which connect these textile layers and keep spaced by their compressive stiffness.
  • the restoring force is determined by this compressive stiffness of the pile threads.
  • the textile is in particular a woven, knitted or knitted fabric, wherein the three-dimensional textile is reversibly compressible and decompressible over at least one Oberfiumbleen Scheme its surface in the direction of the surface normal of this surface area and the at least one electrode of the memory cells on the Oberfietzen Society of the textile or at least one Oberfiumbleen Scheme one of the textiles supported.
  • FIG. 1A is a schematic representation of an energy storage device according to a preferred embodiment of the invention with a discharged memory cell
  • Fig. 1B is a schematic representation of the energy storage device shown in Fig. 1A with one loaded by loading e.g. silicon-containing electrode with lithium ions (charged battery state).
  • both electrodes may also have a change in volume or only the positive electrode or only the negative electrode.
  • FIG. 2 is a side view of a three-dimensional textile for an energy storage device according to a preferred embodiment of the invention
  • FIG. 3 is a photograph of a section through a three-dimensional textile for an energy storage device according to a preferred embodiment of the invention
  • 4 is a photograph of a section through a three-dimensional textile for an energy storage device according to another preferred embodiment of the invention.
  • FIGS. 1A and 1B show, by way of example, a particularly simple memory cell 10 for storing electrical energy in two different states.
  • This memory cell 10 is part of an energy storage device that may comprise a memory cell 10 or a plurality of such memory cells 10 electrically connected to one another.
  • the memory cell 10 shown here has a single electrode arrangement 12 with positive and negative electrode, including current conductor and separator, and a volume compensation element 15 designed as a three-dimensional textile 14.
  • the energy storage device 10 may also include a plurality of electrode assemblies 12, which are electrically connected in parallel with each other.
  • the at least one electrode assembly 12 of the energy storage device 10 can be repeatedly charged electrically in a plurality of cycles to subsequently serve as an electrical energy source.
  • the memory cell 12 In its function as an energy source, the memory cell 12 is discharged again.
  • the memory cell 12 shown is an accumulator cell (short battery cell or secondary cell) or a rechargeable battery cell.
  • the energy storage device 10 is accordingly an accumulator (or abbreviated: a battery).
  • a plurality of electrode arrangements 12 are usually connected in parallel in the memory cell 10.
  • the electrode arrangement 12 can also be designed, for example, as an electrochemical double-layer capacitor.
  • the memory cell 12 shown is designed as a layer system 16.
  • This layer system 16 has two electrodes (an anode and a cathode) 18, 20, and an electrolyte split by a separator 22 into two regions 24, 26.
  • the anode 18 consists of an active region 28 (the active material), which consists of, for example, a silicon-containing anode material.
  • the active region 28 of the first electrode (the anode) 18 adjoins the one of the electrolyte regions 24, wherein the first electrode 18 with which in turn adjoins the active region 28 on the outside and formed as a copper foil Current conductor 30 completes.
  • the second electrode (cathode) 20 likewise consists of an active region 32 (the active mass), for example of a lithium ion-absorbing transition metal oxide, which adjoins the other electrolyte region 26 and to which in turn adjoins a current conductor 34 formed as an aluminum foil.
  • active region 32 the active mass
  • other metals are also possible as lead-off material and other active materials (eg metal phosphates or spinels).
  • the principle of volume compensation proposed here can also be used if the second electrode 20 or else both electrodes 18, 20 undergo a volumetric expansion.
  • This at least one electrode assembly 12 is an electrode assembly 12 changing its volume during a charge / discharge cycle.
  • the active region 28 of the anode 18 of this lithium-ion battery more particularly, but not necessarily, changes its volume at the charge level. and unloading process.
  • the change in volume leads, in particular, to a change in the thickness D of the electrode arrangement 12 perpendicular to the individual layers 22, 24, 26, 28, 30, 32, 34.
  • the three-dimensional textile 14 is in this direction (along an axis) with respect to the electrode arrangement 12 36) within the energy storage device 10 and can be compressed in this direction by the cell 12.
  • a parallel connected stacking sequence of such cells 12 is realized (not shown here).
  • the three-dimensional textile 14 shown in all figures is designed as a spacer textile 42.
  • This spacer textile 42 has a sequence of several (here two) spaced-apart textile layers 44, 46 and an arrangement 48 of transverse to the layers aligned pile threads 50, which connect these textile layers 44, 46 on the one hand and on the other hand kept spaced by their compressive stiffness. If the textile layers 44, 46 compressed by external force parallel to the axis 36, the arrangement 48 of the pile threads 50 forms a restoring (counter) force, which becomes larger with decreasing distance A of the textile layers 44, 46.
  • the spacer textile 42 is therefore reversibly compressible and decompressible perpendicular to the orientation of the planar textile layers 44, 46. It can be designed as a spacer fabric or as spacer fabric or as spacer fabric.
  • the arrangement of the three-dimensional textile 14 and the electrode arrangement 12 or the sequence of electrode arrangements 12 is held by holding structures 52, 54, in particular holding structures 52, 54 of a housing housing the three-dimensional textile 14 and the electrode arrangement 12 of the energy storage device storage cell 10 or the energy storage device.
  • These support structures 52, 54 are disposed on opposite sides of the array and provide a constant width B of the memory cell 10.
  • One of the resulting end faces 56 of the sequence of textile layers 44, 46 of the spacer textile 42 is supported on one of the holding structures 52, while the other end face che 58 on one of the side surfaces 38 of the electrode assembly 12 is supported.
  • the memory cell 12 is supported on its other side with the opposite side surface 40 on the other support structure 54 from.
  • both end faces 56, 58 of the sequence of textile layers 44, 46 of the spacer textile 42 to be supported on each of the side faces 38 of two oppositely arranged electrode arrangements 12 or for both side faces 38, 40 of the electrode arrangement 12 each supported on an end face 56, 58 of two series of textile layers 44, 46 of spacer textiles 42.
  • the width B of the memory cell 10 remains constant, while the thickness D of the electrode arrangement 12 changes as the at least one electrode arrangement 12 cyclises.
  • This volume change of the at least one electrode arrangement 12 is compensated within the cell 10 by the volume compensation element 15 designed as a three-dimensional textile 14.
  • FIG. 1A shows by way of example an electrode arrangement 12 in the discharged state (assuming that 18 represents the negative electrode of a lithium-ion battery with silicon-containing anode material).
  • FIG. 1B shows the corresponding electrode arrangement 12 in the charged state.
  • This difference in the thickness D of the electrode assembly 12 is compensated for by means of the three-dimensional textile 14.
  • the expanding electrode assembly 12 compresses the three-dimensional textile along the axis 36.
  • the pile threads deform 50 and bring a restoring counterforce.
  • the three-dimensional textile 14 presses with a uniform force over the entire surface of the one textile layer 46 back into the starting position shown in FIG. 1A.
  • the deformation of the memory cell 12 over several Cycles are reversible by means of this restoring force along the axis 36 or at least substantially reversible than without a three-dimensional textile 14.
  • FIG. 2 shows a side view of a three-dimensional textile 14 embodied as a spacer textile 42.
  • the spacer textile 42 may also be formed as a spacer fabric or as a spacer fabric.
  • 3 and 4 each show a photograph of a section through a spacer textile 42. While in the spacer textile 42 shown in FIG. 3, the pile threads 50 are aligned substantially parallel, there are additionally further in the spacer textile 42 shown in FIG. 4 Pole threads 50 which are arranged crossed.
  • the yarn or at least one of the yarns for producing such a textile is made of a material that meets the requirements of the boundary conditions in the cell. These include a sufficiently high glass transition temperature, which is above the application temperature, chemical resistance to the chemicals occurring, recovery after stress, as well as sufficient flexural elasticity, which allows processing of the material as a pulp on the corresponding textile machines. Possible candidate materials include, but are not limited to:
  • PET Polyethylene terephthalate
  • PTFE Polytetrafluoroethylene
  • PVAL Polyvinyl alcohol
  • PES Polyethersulfone

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

L'invention concerne un dispositif d'accumulation de l'énergie comprenant au moins un élément accumulateur (10) électrique ou électrochimique pour l'accumulation de l'énergie électrique. L'élément accumulateur (10) comporte au moins un ensemble d'électrodes (12) et au moins un élément de compensation de volume (15) compressible et/ou extensible dans au moins une orientation, pour la compensation d'une variation de volume du ou des ensembles d'électrodes (12). Selon l'invention, l'élément de compensation de volume (15) est réalisé comme un textile tridimensionnel (14), plus précisément comme un textile entretoise (42), ce textile entretoise (42) comportant une succession de plusieurs couches textiles (44, 46) disposées à distance les unes des autres et de fils polaires (50) disposés transversalement par rapport aux couches, qui relient ces couches textiles (44, 46) et les maintiennent écartées par leur rigidité à la compression. L'invention concerne en outre un procédé de compensation du volume d'au moins un ensemble d'électrodes (12) à volume variable d'un dispositif d'accumulation de l'énergie (10) électrique.
PCT/EP2013/053137 2012-02-16 2013-02-15 Dispositif d'accumulation de l'énergie comprenant au moins un élément accumulateur et procédé de compensation du volume des matériaux d'électrode d'un tel élément accumulateur WO2013121027A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101265.2 2012-02-16
DE102012101265A DE102012101265A1 (de) 2012-02-16 2012-02-16 Energiespeichervorrichtung mit mindestens einer Speicherzelle und Verfahren zur Volumenkompensation von Elektrodenmaterialien einer derartigen Speicherzelle

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WO2013121027A1 true WO2013121027A1 (fr) 2013-08-22

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WO (1) WO2013121027A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2016045855A1 (fr) * 2014-09-26 2016-03-31 Robert Bosch Gmbh Dispositif de compensation et module d'accumulateur pourvu d'un tel dispositif de compensation

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DE102013112753A1 (de) * 2013-11-19 2015-05-21 Johnson Controls Advanced Power Solutions Gmbh Akkumulatoranordnung und Verfahren zu deren Herstellung
DE102018203050A1 (de) * 2018-03-01 2019-09-05 Robert Bosch Gmbh Ausgleichselement für eine Batteriezelle und ein Batteriemodul

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US3514341A (en) * 1968-05-31 1970-05-26 Eagle Picher Ind Inc Battery cell case with pressure equalizer
DE4210431C1 (en) * 1992-03-30 1993-04-15 Deta-Akkumulatorenwerk Gmbh, 3422 Bad Lauterberg, De Pole bolt penetration for accumulators - has elastic sealant joined to housing lid and tensioned between pole-nut and-bolt
WO2008127829A2 (fr) * 2007-04-15 2008-10-23 3M Innovative Properties Company Séparateur pour une cellule électrochimique
WO2011012199A1 (fr) * 2009-07-31 2011-02-03 Daimler Ag Élément unitaire pour batterie
EP2290729A1 (fr) * 2009-08-24 2011-03-02 Carl Freudenberg KG Accumulateur d' énergie électrique avec une système de compensation de volume
DE102009058955A1 (de) * 2009-12-18 2011-07-07 Magna Steyr Fahrzeugtechnik Ag & Co. Kg Volumenausgleichsanordnung für Akkumulator
WO2012130447A1 (fr) * 2011-04-01 2012-10-04 Li-Tec Battery Gmbh Cellule électrochimique pour le stockage d'énergie électrique

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NL216936A (fr) * 1956-05-05
DE102004052522A1 (de) * 2004-08-24 2006-03-02 Deutsche Institute für Textil- und Faserforschung Stuttgart - Stiftung des öffentlichen Rechts Thermisch wirksamer Flachkörper und seine Verwendung

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Publication number Priority date Publication date Assignee Title
US3514341A (en) * 1968-05-31 1970-05-26 Eagle Picher Ind Inc Battery cell case with pressure equalizer
DE4210431C1 (en) * 1992-03-30 1993-04-15 Deta-Akkumulatorenwerk Gmbh, 3422 Bad Lauterberg, De Pole bolt penetration for accumulators - has elastic sealant joined to housing lid and tensioned between pole-nut and-bolt
WO2008127829A2 (fr) * 2007-04-15 2008-10-23 3M Innovative Properties Company Séparateur pour une cellule électrochimique
WO2011012199A1 (fr) * 2009-07-31 2011-02-03 Daimler Ag Élément unitaire pour batterie
EP2290729A1 (fr) * 2009-08-24 2011-03-02 Carl Freudenberg KG Accumulateur d' énergie électrique avec une système de compensation de volume
DE102009058955A1 (de) * 2009-12-18 2011-07-07 Magna Steyr Fahrzeugtechnik Ag & Co. Kg Volumenausgleichsanordnung für Akkumulator
WO2012130447A1 (fr) * 2011-04-01 2012-10-04 Li-Tec Battery Gmbh Cellule électrochimique pour le stockage d'énergie électrique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016045855A1 (fr) * 2014-09-26 2016-03-31 Robert Bosch Gmbh Dispositif de compensation et module d'accumulateur pourvu d'un tel dispositif de compensation
CN107078311A (zh) * 2014-09-26 2017-08-18 罗伯特·博世有限公司 补偿装置和具有所述补偿装置的蓄电池模块
CN107078311B (zh) * 2014-09-26 2019-09-10 罗伯特·博世有限公司 补偿装置和具有所述补偿装置的蓄电池模块

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