EP4000120A1 - Batterie für ein zumindest teilweise elektrisch betreibbares kraftfahrzeugs mit zumindest einer flexiblen spanneinrichtung, welche sich an einem kraftfahrzeugbauteil abstützt, sowie kraftfahrzeug - Google Patents
Batterie für ein zumindest teilweise elektrisch betreibbares kraftfahrzeugs mit zumindest einer flexiblen spanneinrichtung, welche sich an einem kraftfahrzeugbauteil abstützt, sowie kraftfahrzeugInfo
- Publication number
- EP4000120A1 EP4000120A1 EP20739319.0A EP20739319A EP4000120A1 EP 4000120 A1 EP4000120 A1 EP 4000120A1 EP 20739319 A EP20739319 A EP 20739319A EP 4000120 A1 EP4000120 A1 EP 4000120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- motor vehicle
- solid
- state
- clamping device
- 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.)
- Pending
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0468—Compression means for stacks of electrodes and separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- H01M50/20—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
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/238—Flexibility or foldability
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
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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
- H01M50/20—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention relates to a battery, in particular a solid-state battery for an at least partially electrically operated motor vehicle, with a plurality of battery cells, each of the battery cells having a first volume in a discharged state of the battery cell and a second volume different from the first volume in a charged state of the battery cell and having at least one first flexible tensioning device for exerting a predetermined force in the discharged state and in the charged state on the plurality of battery cells.
- the invention also relates to a motor vehicle with a battery, in particular a solid-state battery.
- solid-state batteries which can also be referred to as solid-state batteries and have, for example, a lithium metal anode and a silicon anode, have a large change in volume over the corresponding state of charge (SOC), exhibit.
- SOC state of charge
- these solid-state batteries can increase the cell thickness over the
- SOH State of Health
- Solid-state battery it is provided that an at least substantially constant pressure must be applied to the battery cell surface.
- the storage module comprises a multiplicity of plate-shaped electrical storage cells which are arranged upright next to one another in a longitudinal direction of the storage module.
- the memory module comprises a housing which encloses the plurality of plate-shaped memory cells in the longitudinal direction on at least two mutually opposite sides and which is designed in such a way that it
- the housing includes at least partially a vehicle underbody of the vehicle in which the storage module is to be installed.
- the storage module comprises two pressure plates, which are arranged at longitudinally opposite ends of the storage module and which are designed to interact with the housing with the plurality of
- the pressure exerted on the one or more battery cells is dynamically controlled based at least in part on one or more of the monitored operating parameters.
- the object of the present invention is to provide a battery, in particular a
- One aspect of the invention relates to a battery, in particular a solid-state battery for an at least partially electrically operated motor vehicle, with a plurality of
- Battery cell has a first volume and, in a charged state of the battery cell, a second volume different from the first volume, and with at least one first flexible tensioning device for exerting a predetermined force in the discharged state and in the charged state on the plurality of battery cells. It is provided that the at least first flexible tensioning device is designed in such a way that the at least first flexible tensioning device is supported on at least one motor vehicle component of the motor vehicle in order to exert the predetermined force on the plurality of battery cells.
- the flexible tensioning device is supported on the at least one motor vehicle component.
- a motor vehicle component can be
- Motor vehicle floor or a floor panel of the motor vehicle are used.
- the predefined force is to be understood in particular as an essentially constant force.
- the flexible tensioning device exerts a constant force on the battery cells.
- volume change during the charge state of the battery cells the constant force is still maintained.
- the battery cell in the charged state of the battery cell the battery cell has a larger volume than in the discharged state.
- the predetermined force is set in such a way that a constant pressure of 0.1 to 0.5 millipascals is exerted on a cell surface of the battery cells.
- a required range can be set as the driving cycle.
- the modularization can be implemented between different vehicle classes.
- Battery cells or battery modules which in turn can consist of a large number of different battery cells, are lined up in a row in particular standing in the longitudinal direction of the motor vehicle. For this purpose, only as many battery cells can be installed as the user wishes.
- the number of Battery cells can be expanded at any time if, for example, the maximum capacity has not yet been reached.
- the flexible clamping device can be used at certain intervals. This can be removed again with little effort
- a substantially constant pressure or a constant force can thus be exerted continuously on the cell or on the battery module by the clamping device.
- the battery is integrated in the motor vehicle and, for example, standing on the main floor of the vehicle or hanging under the main floor of the vehicle, so that the battery itself does not have an extra floor, but rather as the floor
- the battery cells are lined up standing next to one another, in particular in the longitudinal direction of the vehicle to the motor vehicle.
- the battery cells or the battery modules of at least two battery cells are lined up.
- Battery modules are located between the motor vehicle longitudinal limit and the
- Battery housing is steplessly anchored or can hold its position in some other way.
- the flexible tensioning device is designed in such a way that it can be shifted in the longitudinal direction of the vehicle for the purpose of changing the battery capacity.
- This flexible tensioning device is designed in such a way that it can also be removed and installed again, for example, at another point within the battery. This enables the battery capacity to be increased or damaged battery cells to be replaced.
- the battery has a first
- Battery module with a first number of battery cells and a separate second battery module with a second number of battery cells, the first
- the battery module has a first flexible tensioning device and the second battery module has a second flexible tensioning device and wherein the first flexible
- the battery has at least two battery modules, which in turn are formed from a plurality of battery cells. This enables the battery capacity to be increased within the battery.
- each of the battery modules has a separate flexible clamping device, the predetermined force can be exerted on the respective battery module.
- this change in volume can be reliably compensated for by the change in volume from the charged state of the respective battery module to the discharged state of the respective battery module.
- the first flexible tensioning device and the second flexible tensioning device are supported on the same motor vehicle component.
- this can be a cross brace within the motor vehicle, in particular a
- the battery when the battery is installed in the motor vehicle, at least two housing walls of the battery are designed as motor vehicle components.
- the battery can be installed in the motor vehicle in such a way that the battery does not have a solid battery housing.
- the housing is provided in particular by different motor vehicle components.
- the components of the battery are each supported on the motor vehicle components.
- the solid-state battery can be provided with a reduced weight.
- the at least first flexible tensioning device is designed in such a way that the predetermined force can be regulated.
- the predetermined force can be adjusted.
- this has the advantage that, for example, a different predetermined force must be exerted on the battery cells over the life of the battery.
- the ability to regulate the specified force means that the battery can operate better, even over its lifetime.
- the battery has an electronic computing device, which is designed to be dependent on a
- Computing device has in particular corresponding circuits and lines in order to be able to generate control signals.
- Computing device thus regulate the specified force automatically and based on the current state of charge. This enables improved operation of the battery.
- the battery has, for example, corresponding voltage sensors, by means of which the state of charge of the plurality of battery cells or a respective one
- Battery cell can be determined, whereby depending on the detected
- a pressure sensor installed inside the battery, which measures the internal pressure within the battery and records it accordingly
- Pressure value makes the setting or regulation of the at least one flexible clamping device.
- the required pressure to be applied in particular the specified force value, is determined by appropriate sensors or derivations of the charge state of the battery cells and is permanently set so that the battery cells experience a constant pressure over their respective area and the change in volume can take place , or that a constant pressure acts on the cell even when the volume changes.
- the pressure or the tension is set in such a way that on one side of the row of cells it is supported by a respective housing wall or the vehicle structure located behind it. This enables improved operation of the battery within the motor vehicle.
- the battery in particular the solid-state battery, has at least one busbar on which the plurality of battery cells are movably arranged.
- the battery cells are designed either as hard case cells or as
- Pouch cells are executed.
- the voltage is tapped via the corresponding
- Terminals that slide over the power supply rail, in other words the power rail, and thus also move with the cell displacement due to the volume change can.
- the busbar is pressed against the cell arrester, for example by springs, in order to be able to ensure contact.
- the cell arrester and busbar can be arranged either laterally or on an upper or lower side of the battery cells. This enables improved operation of the battery.
- the at least first flexible clamping device is designed as a hydraulic clamping device.
- the pressure is applied here by a liquid.
- the expansion of the battery cells, in particular in the longitudinal direction can then be compensated for by the liquid.
- the change in volume and the specified force can be implemented for this purpose using a cushion or a cylinder as a hydraulic element.
- Clamping device is designed as a pneumatic clamping device.
- pneumatics the corresponding predetermined force or pressure is applied by a gas and, for example, in the flexible tensioning device by a cushion or by a cylinder, the change in the expansion in the longitudinal direction of the vehicle is compensated for.
- This is in particular a preferred variant of the flexible clamping device.
- the at least first flexible tensioning device is designed as a spring-based tensioning device.
- the predetermined force is exerted on the battery cells by means of a spring force.
- a respective spring element of the flexible is then supported
- Clamping device on the at least one motor vehicle component in order to be able to exert the predetermined force on the battery cells. This enables improved operation of the battery with little effort.
- the specified force can be implemented, for example, by means of tension mats which are arranged between the battery cells and the flexible tensioning device.
- tension mats which are arranged between the battery cells and the flexible tensioning device.
- Rubber components in particular via super-elastic rubbers, the pressure can be applied, the elastic rubber components in particular being correspondingly deformable.
- the predetermined force can be exerted on the battery cells within the flexible clamping device.
- the at least first flexible tensioning device is designed as an electrical tensioning device.
- an electrical displacement can thereby be driven by, for example, a control motor, whereby the flexible tensioning device is in turn displaced as a whole, and in particular the control motor is then on the
- the constant force can be built up inside by a cylinder or by moving a wall of the flexible tensioning device.
- the electrical tensioning device is
- the at least first flexible clamping device is designed as a plastic or rubber-based clamping device. This can be done, for example, via elastic plastic components or rubber components,
- the elastic rubber components in particular being correspondingly deformable.
- the battery should have at least two flexible tensioning devices, in particular a plurality of flexible tensioning devices, that the flexible tensioning devices are preferably designed the same, but it is also possible that the respective tensioning devices are designed differently from one another.
- the first flexible clamping device can be designed as an electrical clamping device, with a second flexible
- Clamping device can be designed as a pneumatic clamping device. This list is purely by way of example and is by no means to be considered exhaustive and is only used to illustrate this embodiment.
- Yet another aspect of the invention relates to a motor vehicle with a battery according to the preceding aspect and with at least one motor vehicle component, wherein at least a first flexible clamping device of the battery on the
- the motor vehicle is in particular as
- Fig. 1 is a schematic plan view of an embodiment of a
- FIG. 3 shows a schematic side view of an embodiment of a battery
- FIG. 4 is a schematic perspective view of a further embodiment of FIG.
- Fig. 1 shows in a schematic plan view an embodiment of a
- the battery 12 which can in particular be a solid-state battery, is designed in particular for the at least partially electrically operated motor vehicle 10.
- the battery 12 has a plurality of battery cells 14.
- Each of the battery cells 14 has a first volume in a discharged state of the battery cell 14 and in a charged state Battery cell 14 has a second volume different from the first volume. This change in volume is shown in particular by arrows 16 and 18 in FIG.
- the first arrow 16 in particular shows an increase in volume and the second arrow 18 shows a volume reduction.
- a respective battery cell 14 is larger in the charged state, that is to say has a larger volume, than in the discharged state.
- the battery 12 also has a flexible tensioning device 20 for exerting a predetermined force K in the discharged state and in the charged state on the
- the at least first flexible tensioning device 20 is designed such that the at least first flexible tensioning device 20 is supported on at least one motor vehicle component 22 of the motor vehicle 10 in order to exert the predetermined force K on the plurality of battery cells 14.
- the motor vehicle component 22 is a structuring element.
- the structuring element can be, for example, a cross strut or axle of motor vehicle 10.
- FIG. 1 shows that in the installed state of the battery 12 in the motor vehicle 10, at least two
- Housing walls of the battery 12 are designed as motor vehicle components 22, 24.
- the battery 12 or the battery cells 14, for example are supported as the housing wall on the second motor vehicle component 24, which in the present case can also be designed as an axle, for example as the rear axle of the motor vehicle 10.
- sill 26 of the battery 12 is designed as the housing wall on the second motor vehicle component 24, which in the present case can also be designed as an axle, for example as the rear axle of the motor vehicle 10.
- Motor vehicle 10 a corresponding housing wall for the battery 12 can be formed.
- the arrow X shows in particular the
- Motor vehicle longitudinal direction of motor vehicle 10 and in particular the
- the arrow Y shows in particular one
- Fig. 2 shows a schematic plan view of a further embodiment of the
- the battery 12 has a first battery module 28 with a first number of battery cells 14 and a separate second battery module 30 with a second number of battery cells 14.
- the first battery module 28 is formed by three battery sub-modules 32, each of the battery sub-modules 32 having the battery cells 14.
- the second battery module 30 is only formed by the battery cells 14. In particular, this shows that the battery 12 has a modular structure and in particular to one
- FIG. 2 shows that the first battery module 28 is the first flexible
- Has clamping device 20 and the second battery module 30 has a second flexible clamping device 34 in the present exemplary embodiment. It is provided that the first flexible clamping device 20 and the second flexible clamping device 34 are supported on the motor vehicle component 22 in the installed state in the motor vehicle 10.
- FIG. 2 shows that the battery 12 has at least one busbar 36 on which the plurality of battery cells 14, in the present case
- the battery submodules 32 are movably arranged.
- the battery 12 in a schematic side view.
- the at least first flexible tensioning device 20 is designed in such a way that the predetermined force K can be regulated.
- the battery 12 has an electronic computing device 38 which is designed to regulate the specified force K as a function of a decision criterion.
- Computing device 38 can, in turn, calculate the predetermined force K as a function of a detected current state of charge of the plurality of battery cells 14 and / or in
- a corresponding detection device 40 for detecting the pressure or the state of charge is arranged within the battery 12.
- FIG. 3 shows that the at least first flexible tensioning device is designed as an electrical tensioning device. This points in the present
- the electrical clamping device has an electrical motor 42, via which a spindle 44 can be driven.
- a thread 46 is arranged on the motor vehicle component 22, so that by turning the spindle 44, the force K can be exerted on a pressure plate 48, which in turn constantly distributes the force K to the battery cells 14.
- the flexible clamping device 20 As an alternative to the electrical clamping device, the flexible clamping device 20,
- 34 can also be provided as a spring-based tensioning device or as a plastic or rubber-based tensioning device.
- the tensioning devices 20, 34 make it possible for the thickness of the battery cells 14 to change due to charging or discharging or aging.
- the at least first flexible tensioning device 20 has an actively controlled constant force system with a preferably horizontal force-displacement characteristic to compensate for the change in thickness.
- the force K is performed electro-mechanically in the present embodiment.
- the kinetic energy is preferably generated by the electric motor 42 and for example via the gear train or via the spindle 44 directly via ramp or lever systems with a
- the variants with spindle 44 are self-locking.
- a de-energized, active locking or brake is provided.
- an elastic element such as a thin tensioning mat between the battery modules 28, 30 and the pressure plate 48.
- the horizontal force-displacement curve of the flexible tensioning device 20, 34 only ever applies the necessary minimum pre-tensioning force, so that the battery cell 14 or the battery modules 28, 30 or the battery submodules 32 can be made lighter and more cost-effective and space-saving. Since the electrode stack is always pressed with the predetermined force K, there is no negative influence on cell performance and service life. The active control of the predetermined force K still allows this to be dependent on
- the force K could be reduced to 0.
- the flexible clamping device 20, 34 can be inserted once into the
- Battery cell 14 or installed in the battery module 28, 30 or several times. If in the battery module 28, 30 after each battery cell 14 a corresponding flexible
- Clamping device 20 can be provided, for example, by means of the electric motor 42, a spindle 44 and a ramp system. Alternatively, it can also be provided that the electrically operated flexible tensioning device 20 is implemented by means of an electric motor 42, the spindle 44 and a lever system.
- FIG. 4 shows a schematic perspective view of another embodiment of the battery 12.
- FIG. 4 shows, for example, the embodiment of the second battery module 30 according to FIG. 2.
- the second flexible clamping device 34 is designed as a pneumatic clamping device.
- the flexible clamping devices 20, 34 can also be hydraulic
- the second flexible tensioning device 34 is shown.
- the same exemplary embodiment applies to the first flexible tensioning device 20.
- the embodiment of the flexible tensioning device 20, 34 as a pneumatic flexible tensioning device is a preferred exemplary embodiment.
- the second battery module 30 has a plurality of battery cells 14, which can be formed, for example, by means of solid-state chemistry.
- the pneumatic actuator is based on the bellows principle with the present
- Embodiment running three connected, series-connected air chambers are, for example, made of plastic or rubber, glued or vulcanized on the end face to metallic carrier plates. Due to the flat design of the front sides of the pneumatic actuator, no force-distributing pressure plate has to be arranged between the actuator and the electrode stack. Pneumatic plates and electrode stacks are inserted into a metal housing 50 which is closed on all sides, the front wall of which is thickened in the direction of the prestressing force, in particular with the predetermined force K, and is supported, for example, directly on the motor vehicle component 20.
- the compressed air supply 52 to the bellows is provided by an electrically driven compressor and control valves.
- a storage tank can be arranged in the pneumatic system in order to maintain the required pressure over a longer period of time without operating the compressor.
- the additional effort required for correspondingly designed battery cells 14 or battery modules 28, 30 is significantly reduced if the motor vehicle 10 is already equipped with an air suspension system which has its own compressor.
- the at least first flexible tensioning device (20) is designed in such a way that the at least first flexible tensioning device (20) on at least one inside of the battery housing or on the inside of the battery housing to exert the predetermined force (K) on the plurality of battery cells (14) is supported on a cell housing.
- the tensioning device according to the invention can be installed not only in a battery or a cell block, but also within an individual battery cell.
- the pressure is exerted on cells with elastic housings in the cell block or directly on the electrodes in the cell.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019004928.4A DE102019004928A1 (de) | 2019-07-15 | 2019-07-15 | Batterie für ein zumindest teilweise elektrisch betreibbares Kraftfahrzeugs mit zumindest einer flexiblen Spanneinrichtung, welche sich an einem Kraftfahrzeugbauteil abstützt, sowie Kraftfahrzeug |
| PCT/EP2020/069175 WO2021008952A1 (de) | 2019-07-15 | 2020-07-08 | Batterie für ein zumindest teilweise elektrisch betreibbares kraftfahrzeugs mit zumindest einer flexiblen spanneinrichtung, welche sich an einem kraftfahrzeugbauteil abstützt, sowie kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4000120A1 true EP4000120A1 (de) | 2022-05-25 |
Family
ID=71575371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20739319.0A Pending EP4000120A1 (de) | 2019-07-15 | 2020-07-08 | Batterie für ein zumindest teilweise elektrisch betreibbares kraftfahrzeugs mit zumindest einer flexiblen spanneinrichtung, welche sich an einem kraftfahrzeugbauteil abstützt, sowie kraftfahrzeug |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US12476272B2 (de) |
| EP (1) | EP4000120A1 (de) |
| JP (1) | JP2022541382A (de) |
| KR (1) | KR20220092815A (de) |
| CN (1) | CN114128026B (de) |
| DE (1) | DE102019004928A1 (de) |
| WO (1) | WO2021008952A1 (de) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022061107A1 (en) | 2020-09-18 | 2022-03-24 | Solid Power, Inc. | Battery or electrochemical cell fixture |
| DE102021117165A1 (de) | 2021-07-02 | 2023-01-05 | Volkswagen Aktiengesellschaft | Batteriemodul mit Druckbegrenzung, Traktionsbatterie und Kraftfahrzeug |
| US20230074320A1 (en) * | 2021-09-06 | 2023-03-09 | Mohammad Shafikul Huq | System and method for recharagable battery module by combining cells of varying sizes |
| DE102021212887A1 (de) | 2021-11-16 | 2023-05-17 | Volkswagen Aktiengesellschaft | Zellverband für insbesondere ein Hochvoltbatteriesystem |
| WO2023177646A1 (en) * | 2022-03-14 | 2023-09-21 | Electric Power Systems, Inc. | Expansion systems and methods for battery pack |
| JP7822230B2 (ja) * | 2022-03-30 | 2026-03-02 | 本田技研工業株式会社 | 全固体電池ユニット |
| EP4511904A2 (de) * | 2022-05-18 | 2025-02-26 | Solid Power Operating, Inc. | Batteriepacksystem |
| DE102022112914A1 (de) | 2022-05-23 | 2023-11-23 | Bayerische Motoren Werke Aktiengesellschaft | Elektrischer Energiespeicher für ein Kraftfahrzeug mit schwellerintegrierter Ausdehnungsvorrichtung |
| DE102022210267A1 (de) * | 2022-09-28 | 2024-03-28 | Contitech Vibration Control Gmbh | Festkörperakkumulatorsystem |
| DE102022004267A1 (de) | 2022-11-18 | 2024-05-23 | Mercedes-Benz Group AG | Verfahren zum Bestimmen einer Schädigungsrate einer Batteriezelle für einen elektrischen Energiespeicher eines Kraftfahrzeugs, Verfahren zum Bestimmen eines einstellbaren Drucks, Computerprogrammprodukt, computerlesbares Speichermedium, elektronische Recheneinrichtung sowie Druckregulierungseinrichtung |
| DE102022130845A1 (de) | 2022-11-22 | 2024-05-23 | Audi Aktiengesellschaft | Batteriemodul mit reduzierter Verschleißanfälligkeit und Verfahren zum Herstellen eines Batteriemoduls |
| DE102023000103A1 (de) | 2023-01-16 | 2024-07-18 | Mercedes-Benz Group AG | Hochvoltbatterie und Verfahren zum Betreiben einer Hochvoltbatterie |
| DE102023000535A1 (de) * | 2023-02-17 | 2024-08-22 | Mercedes-Benz Group AG | Verfahren zum Ansteuern einer Druckbeaufschlagungseinrichtung für ein Feststoffbatteriemodul sowie Batteriemanagementsystem |
| FR3151430B1 (fr) * | 2023-07-21 | 2025-11-21 | Renault Sas | Véhicule doté d’une batterie à ions lithium associée à un dispositif de compression |
| DE102023003281A1 (de) | 2023-08-09 | 2025-02-13 | Mercedes-Benz Group AG | Zellmodul für eine Batterie, Batterie und Kraftfahrzeug |
| US20250070351A1 (en) | 2023-08-22 | 2025-02-27 | GM Global Technology Operations LLC | Pressure control of battery cells |
| TWI902057B (zh) * | 2023-11-15 | 2025-10-21 | 財團法人工業技術研究院 | 電池盒 |
| WO2025122759A1 (en) * | 2023-12-07 | 2025-06-12 | Electric Power Systems, Inc. | Expansion systems and methods for battery pack |
| IT202300027390A1 (it) * | 2023-12-20 | 2025-06-20 | Ferrari Spa | Modulo batteria per un pacco batteria veicolare |
| DE102024102881A1 (de) * | 2024-02-01 | 2025-08-07 | Carl Freudenberg Kg | Energiespeichereinheit |
| DE102024131573A1 (de) | 2024-10-29 | 2026-04-30 | Volkswagen Aktiengesellschaft | Traktionsbatterie mit einstellbarer Druckkraft für die Batteriezellen und Verfahren zum Nachstellen der Druckkraft an einer Traktionsbatterie |
| CN120756271B (zh) * | 2025-09-03 | 2026-03-13 | 宁德时代新能源科技股份有限公司 | 车辆 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2843888B2 (ja) * | 1989-04-12 | 1999-01-06 | 古河電池株式会社 | 密閉蓄電池の取り付け法 |
| US6945800B2 (en) * | 2000-12-15 | 2005-09-20 | Brigham Young University | Constant force apparatus and method |
| JP2002260711A (ja) * | 2001-02-28 | 2002-09-13 | Ishikawajima Harima Heavy Ind Co Ltd | 燃料電池の締付装置及びこの締付方法 |
| WO2005045981A1 (ja) * | 2003-11-07 | 2005-05-19 | Nissan Motor Co., Ltd. | 燃料電池スタック及びその締付け方法 |
| FR2933814B1 (fr) * | 2008-07-11 | 2011-03-25 | Commissariat Energie Atomique | Electrolytes liquides ioniques comprenant un surfactant et dispositifs electrochimiques tels que des accumulateurs les comprenant |
| DE102009035482B4 (de) * | 2009-07-31 | 2023-11-16 | Mercedes-Benz Group AG | Batterie mit einer Vielzahl von Batterieeinzelzellen |
| KR101209678B1 (ko) * | 2009-11-25 | 2012-12-10 | 기아자동차주식회사 | 연료전지 스택의 면압 조절 장치 |
| US8465866B2 (en) | 2010-04-21 | 2013-06-18 | Samsung Sdi Co., Ltd. | Battery module including a pressure control unit |
| US9306252B2 (en) * | 2012-06-11 | 2016-04-05 | Nucleus Scientific, Inc. | Dynamic pressure control in a battery assembly |
| JP6123642B2 (ja) * | 2013-11-08 | 2017-05-10 | トヨタ自動車株式会社 | 全固体電池の充電システム |
| WO2015107404A1 (en) * | 2014-01-15 | 2015-07-23 | Meccanica Biomedica S.R.L. | Adjustable intensity constant force generator |
| DE102014225367A1 (de) * | 2014-12-10 | 2016-06-16 | Robert Bosch Gmbh | Batterie und Verfahren zur Herstellung einer Batterie |
| DE102015216221A1 (de) * | 2015-08-25 | 2017-03-02 | Bayerische Motoren Werke Aktiengesellschaft | Traktionsspeicher für den Unterboden eines Fahrzeugs |
| JP2017103083A (ja) | 2015-12-01 | 2017-06-08 | トヨタ自動車株式会社 | 電池システム |
| CN110710022A (zh) * | 2017-06-26 | 2020-01-17 | 松下知识产权经营株式会社 | 蓄电装置 |
| DE102017119467B4 (de) * | 2017-08-25 | 2020-01-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterieeinrichtung für ein wenigstens teilweise elektrisch betriebenes Kraftfahrzeug |
| GB2568957B (en) * | 2017-12-04 | 2020-06-03 | Jaguar Land Rover Ltd | An electricity storage system, a vehicle, a method and an electronic control means |
-
2019
- 2019-07-15 DE DE102019004928.4A patent/DE102019004928A1/de active Pending
-
2020
- 2020-07-08 US US17/627,349 patent/US12476272B2/en active Active
- 2020-07-08 WO PCT/EP2020/069175 patent/WO2021008952A1/de not_active Ceased
- 2020-07-08 KR KR1020217043198A patent/KR20220092815A/ko not_active Ceased
- 2020-07-08 CN CN202080052225.5A patent/CN114128026B/zh active Active
- 2020-07-08 JP JP2021576174A patent/JP2022541382A/ja active Pending
- 2020-07-08 EP EP20739319.0A patent/EP4000120A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US12476272B2 (en) | 2025-11-18 |
| WO2021008952A1 (de) | 2021-01-21 |
| JP2022541382A (ja) | 2022-09-26 |
| CN114128026B (zh) | 2024-07-26 |
| DE102019004928A1 (de) | 2021-01-21 |
| KR20220092815A (ko) | 2022-07-04 |
| CN114128026A (zh) | 2022-03-01 |
| US20220271326A1 (en) | 2022-08-25 |
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