WO2023046389A1 - Druckspanneinrichtung für eine rahmenvorrichtung zum einspannen eines batteriezellenpakets, rahmenvorrichtung und batterie - Google Patents
Druckspanneinrichtung für eine rahmenvorrichtung zum einspannen eines batteriezellenpakets, rahmenvorrichtung und batterie Download PDFInfo
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- WO2023046389A1 WO2023046389A1 PCT/EP2022/073371 EP2022073371W WO2023046389A1 WO 2023046389 A1 WO2023046389 A1 WO 2023046389A1 EP 2022073371 W EP2022073371 W EP 2022073371W WO 2023046389 A1 WO2023046389 A1 WO 2023046389A1
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- WIPO (PCT)
- Prior art keywords
- clamping
- joint
- another
- pressure
- battery cell
- Prior art date
Links
- 230000008961 swelling Effects 0.000 claims description 32
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000002441 reversible effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims 1
- 206010042674 Swelling Diseases 0.000 description 30
- 238000005452 bending Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 13
- 230000008859 change Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000007363 ring formation reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
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
- 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
-
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- Compression clamping device for a frame device for clamping a battery cell pack, frame device and battery
- the present invention relates to a pressure clamping device for a frame device, which is designed to clamp a battery cell pack. Furthermore, the invention relates to a frame device for clamping a battery cell pack, the frame device having such a pressure clamping device. Furthermore, the invention relates to a battery which has the frame device and a battery cell pack which has a multiplicity of battery cells arranged next to one another and the battery cell pack is clamped in the clamping area.
- Motor vehicles that can be driven or moved at least partially electrically for example hybrid motor vehicles, electric motor vehicles, etc.
- a battery in particular a secondary battery, for storing and providing electrical energy for driving the corresponding motor vehicle by means of an electromechanical energy converter.
- the battery is usually formed from a large number of battery cells, which are designed, for example, as respective pouch cells or prismatic cells.
- the respective battery cell is repeatedly charged (state of charge SoC becomes higher) and discharged (state of charge SoC becomes smaller) during operation of the motor vehicle, with the respective battery cell in the discharged state (SoC equal to or close to 0) and in the charged state (SoC greater than 0) different external dimensions, that is, different dimensional dimensions.
- the battery cell swells from a base level at SoC » 0 to a swelling level (SoC > 0) due to electrical charging.
- the battery cell expands irreversibly with age, which means that the basic dimension increases as the battery cell ages.
- a defective battery cell may swell or be swollen to the degree of swelling.
- frame elements in particular joints of the frame, are heavily loaded as the battery cells expand to the degree of swelling.
- the battery cells are undesirably clamped too tightly if at least one or more of the battery cells have a greater thickness than a target thickness due to manufacturing tolerances.
- deformation zones spaces and/or elements
- the deformation zones must be kept free of undeformable elements (so-called blocking agents).
- deformation of the battery or the battery module must be avoided, since otherwise thermal runaway could occur due to mechanical overload in the event of a crash.
- DE 10 2018 216 835 A1 and DE 10 2019 201 126 A1 each disclose a battery module with a tensioning device that has two support elements that are spaced apart from one another by a wavy spring. Conventional battery cells are then clamped between one of the two support elements and a counter bearing.
- these are conventional battery modules particularly complex as far as their production is concerned, since the clamping device is designed in several parts, and the parts of the clamping device are provided separately from one another in order to then be arranged next to one another.
- the object of the present invention is to create a possibility of particularly advantageously using or arranging battery cells which change in terms of their spatial extent during operation.
- a pressure clamping device is proposed, the pressure clamping device being provided for a frame device which is designed to clamp a battery cell pack.
- the pressure-tensioning device has a fastening body via which the pressure-tensioning device can be fastened—directly or indirectly—to a tension-tensioning device of the frame device.
- the fastening body of the pressure-tensioning device can be fastened to a tension-tensioning element of the tension-tensioning device.
- the tensioning device has the tensioning element or several tensioning elements.
- the fastening body has a fastening element, for example.
- the fastening body has a welding surface and/or at least one other fastening element that acts in a non-positive, form-fitting and/or material-locking manner.
- the tensioning device in particular its tensioning element or elements, has a fastening element that corresponds to the fastening element of the fastening body.
- the battery cell pack is provided in particular for a motor vehicle that can be driven or moved at least partially electrically.
- the motor vehicle is, for example, a passenger car and/or a truck, a bus, a motorcycle, etc.
- use of the battery cell pack in other types of vehicle (watercraft, aircraft, rail vehicle, etc.) is not excluded.
- the battery cell pack In the intended installation position of the battery cell pack, the battery has the battery cell pack.
- the battery cell pack has a Variety of battery cells arranged side by side or one above the other, in particular secondary battery cells.
- the respective battery cell or secondary battery cell is designed, for example, as a solid-state battery cell. Accordingly, each battery cell has a solid electrolyte in this case. In particular, the respective battery cell is also free of any liquid. Battery cells designed in this way are referred to as ASSB cells (ASSB: All Solid State Battery). Solid-state battery cells have advantages in terms of a particularly high specific energy density and improved operational reliability.
- the pressure clamping device also has a clamping body which is designed to come to rest on the battery cell pack as intended—directly or indirectly.
- the clamping body has a clamping surface that corresponds to a contact surface of the battery cell pack, so that the clamping body comes to rest on the battery cell pack by the clamping surface of the clamping body and the contact surface of the battery cell pack touching one another directly or indirectly.
- the contact surface of the battery cell pack can be at least part of an outer surface of a “last” battery cell, with no further battery cell being arranged between this last battery cell and the clamping surface of the clamping body.
- the pressure clamping device also includes a clamping joint device, by means of which the fastening body and the clamping body are connected to one another—directly or indirectly.
- the fastening body and the clamping body are fastened to one another in a non-positive, positive and/or material connection via the clamping joint device.
- the jointed clamping device and the fastening body or the jointed clamping device and the clamping body do not simply rest against one another without a non-positive, positive and/or material connection.
- a relative movement, in particular in relation to all three spatial directions, between the clamping joint device and the fastening body and between the clamping joint device and the clamping body is blocked at least on corresponding connecting elements. This is because the fastening body and the clamping body are connected to one another via the clamping joint device, that is to say fixed to one another.
- the clamping joint device is in any case designed in such a way that when a clamping force acting in the direction towards the fastening body is applied to the clamping body, the clamping body moves in a clamping direction towards the fastening body by the clamping joint device yielding in a defined manner. Since the pressure clamping device has the clamping joint device, the pressure clamping device is a complete system.
- the clamping joint device is at least compressible in that at least one battery cell of the battery cell pack clamped by the frame device swells to a degree of swelling.
- the degree of swelling of the corresponding battery cell is larger than a basic size of the corresponding battery cell.
- the swelling of the battery cell from its basic size to the swelling size is related, for example, to a current state of charge (SoC: State of Charge).
- SoC State of Charge
- the battery cell in the charged state SoC>0
- the battery cell has the swelling dimension, it is larger in at least one spatial direction than if the battery cell has the basic dimension. For example, the corresponding battery cell is then thicker. To put it simply, the battery cell is wider and/or longer and/or higher when it has the swelling dimension than when the battery cell has the basic dimension.
- the compression clamping device in particular by the clamping joint device, in that the clamping force acting in the direction of the fastening body is applied to the clamping body as a result of the swelling of the corresponding battery cell, so that the clamping body is moved towards the fastening body in the clamping direction, with the clamping joint device yielding in a defined manner.
- the fastening body and the tensioning device regardless of whether the clamping joint device yields or has yielded—remain stationary relative to one another, so that the swelling of the battery cell on the outside of the frame device is not reflected in a change in the size of the frame device.
- the geometry and external dimensions of the frame device therefore remain constant on the outside, regardless of whether the battery cell has the basic size or the swelling size.
- External dimensions of the frame device in particular external dimensions of the pressure clamping device and/or the tension clamping device, thus change during a cyclization (repeated electrical charging and discharging in normal operation) of the corresponding battery cell.
- the pressure clamping device efficiently prevents the battery cell from being undesirably clamped too tightly, for example due to manufacturing tolerances of the battery cell. This is because a possibly greater thickness in comparison to a target thickness of the battery cell is compensated for by the clamping joint device—in particular when manufacturing a battery having the frame device. Furthermore, it is particularly easy to visually detect whether the battery, in particular one or more of the battery cells, is damaged or worn out by measuring an angle and/or a distance between elements of the pressure clamping device, in particular between elements of the clamping joint device.
- a space between the fastening body and the clamping body, in which the clamping joint device is inserted can serve as a deformation zone in the event of an accident.
- it is no longer necessary to provide a distance between the frame device, in particular between the pressure clamping device, and spaces or elements that deform in the event of an impact since the kinetic energies present during the impact are released in the event of an impact due to a yielding of the clamping joint device be dismantled efficiently.
- the clamping joint device is configured, i.e. designed and arranged, in such a way that an initial pressure acts on the respective battery cell, even if the corresponding battery cell is not swollen. So the clamping joint device is designed and arranged in such a way that the initial pressure acts on the respective battery cell even when the battery cell has the basic size.
- the clamping joint device has a deformation component of the fastening body, so that the clamping joint device yields in a defined manner in that the deformation component is deformed, in particular bent.
- the deformation portion of the fastening body can be a bending portion of the fastening body.
- the fastening body, in particular its deformation portion or bending portion is therefore regarded herein as a bending element or bending joint of the clamping joint device.
- particularly strong swellings and consequently particularly strong clamping forces can be compensated for in this way.
- the clamping joint device comprises a first joint or hinge device, the joint device or hinge device having a first strap element and a second strap element. Furthermore, the joint or hinge device has a rotary joint or hinge on the fastening body side, via which—directly or indirectly—the fastening body and the first band element are connected to one another in an articulated manner.
- the first joint device also includes a central rotary joint or a central hinge, via which the first band element and the second band element are connected to one another in an articulated manner.
- the first hinge device or the first joint device comprises a pivot joint on the tensioning body side or a hinge on the tensioning body side, via which the second band element and the tensioning body are connected to one another in an articulated manner.
- the fastening body and the clamping body are connected to one another via the rotary joint on the fastening body side, via the first band element, via the central rotary joint, via the second band element and via the rotary joint on the clamping body side.
- the tension link means Upon yielding of the tension link means, the strap members pivot in relation to each other, in relation to the attachment body and in relation to the tension body.
- the rotary joints are deflected or rotated, for example, from a rest position into a deflection position.
- a respective direction of rotation of the respective swivel joint or hinge it is provided in particular that the clamping joint device is produced or provided, with an angle being set by the central swivel joint between the band elements is different from 180 degrees.
- a respective direction of rotation of the rotary joints or hinges is predetermined or can be predetermined when the clamping joint device yields.
- kinematics are provided between the fastening body and the clamping body, which are designed in such a way that there is a constant level of force between the corresponding battery cell and the pressure clamping device.
- This constant level of force is independent of any deflection or yielding of the clamping joint device.
- the battery cells of the battery cell pack are subjected to the initial pressure in a constant manner.
- a particularly high level of resilience is ensured by the kinematics, ie by the clamping joint device.
- the pressure clamping device in particular its clamping joint device, can have more than one joint device in a further development of the pressure clamping device.
- the joint devices can be spaced apart from one another and can move as it were or differently when the tensioning body is moved in the direction of the fastening body.
- the respective middle rotary joints of two joint devices or hinge devices can move in the same direction when the clamping joint device yields.
- the middle rotary joints or hinges of the two (same) joint devices can alternatively move towards one another under the yielding of the tensioning device. If the pressure clamping device has several joint devices or several hinge devices, these can be combined in any serial, parallel and/or sequential manner, i.e.
- the clamping joint device also has at least a second Hinge device, a third band element and a fourth band element.
- the clamping joint device then comprises a rotary coupling joint or a coupling hinge, via which the third strap element and the fourth strap element are connected to one another in an articulated manner.
- the third band element and the central pivot joint of the first joint device are connected to one another in an articulated manner, and the fourth band element and the central pivot joint of the second joint device are also connected to one another in an articulated manner.
- the respective middle swivel joint of the two joint devices which together form a joint device pair, is a respective triple swivel joint.
- a triple pivot joint i.e. by means of the respective central pivot joint of the joint devices of the joint device pair, the respective first belt element, the respective second belt element and the third belt element or the fourth belt element can be rotated or pivoted relative to one another, in particular about a common axis of rotation.
- the joints of the clamping joint device exhibit a resistance to articulation of the corresponding joint device.
- a resistance to yielding of the clamping joint device can be set or predetermined. If the third strap element and the fourth strap element as well as the coupling swivel joint between the joint devices of the joint device pair are then used, a further resistance level can be added to the resistance against the yielding of the clamping joint device without having to accept a greater overall height of the clamping joint device.
- the coupling swivel joint, the third strap element and the fourth strap element between the two joint devices ensure that they deform or rotate in a defined manner, with the central swivel joints of the two joint devices moving towards one another when the clamping joint device yields.
- the respective rotary joint or hinge is designed as a film or film joint or film or film hinge.
- the pressure-tensioning device can be produced particularly easily and with little effort, since at least the (respective) joint device and, if necessary, the third strap element and the fourth strap element as well as the rotary coupling joint can be designed in one piece with one another.
- the elements mentioned above by means of extrusion, by means of casting, by means of a generative manufacturing process (3D printing) etc. be or will be produced in one piece with each other.
- the fastening body, the clamping body and the clamping joint device are designed in one piece with one another.
- the fastening body, the clamping body and the clamping joint device are formed, for example, by means of a single, joint extrusion, casting, etc. Due to this one-piece, in particular simultaneous formation of the fastening body, the clamping body and the clamping joint device, which takes place in a single, common operation, the pressure clamping device is produced in this one operation.
- one or more of the elements of the pressure clamping device is/are provided separately from the remaining elements of the pressure clamping device, so that the separately provided elements and the remaining elements form a non-positive, positive and/or material connection with one another to produce the pressure clamping device after the corresponding provision - so in a further operation - are fixed to each other. Since the pressure clamping device is designed in one piece, it is particularly stable and thus advantageously has a particularly long service life.
- the pressure clamping device has both the fastening body with the deformation component and at least one of the articulation devices described above, a further development of the pressure clamping device provides that a resistance to an articulated movement of the articulated device(s) is designed in such a way that the articulated movement of the articulated device(s) takes place at a first clamping force.
- a resistance to the deformation of the deformation portion, in particular to the bending of the bending portion, of the fastening body is formed in such a way that the deformation/bending occurs with a second clamping force.
- the first clamping force is greater than the second clamping force or that the second clamping force is greater than the first clamping force.
- a yielding sequence or deformation and/or bending sequence of the pressure clamping device can be specified, in particular when producing the pressure clamping device.
- a material, a material thickness and/or a shape of the joint device or Articulation devices and the attachment body, in particular its deformation or bending portion selected accordingly.
- the result is either that when the clamping joint device yields due to the second clamping force, first the deformation part of the fastening body is deformed, i.e. for example the bending part of the fastening body is bent, and only when the second clamping force occurs, the rotary joints or hinges of the joint device (s) to be rotated.
- the joints of the joint device(s) are first rotated due to the second (lower) clamping force, and the deformation portion of the fastening body is deformed only when the first (higher) clamping force occurs. It is thus advantageously possible to specify which of the elements of the pressure clamping device is deformed first and/or more strongly, as a result of which the pressure clamping device can be used in a particularly versatile and/or flexible manner, ie for a large number of purposes.
- the pressure clamping device in particular the clamping device, is designed in such a way that the yielding of the clamping joint device is fully or partially reversibly elastic without being destroyed.
- the yielding of the clamping joint device i.e. for example the deformation or bending of the deformation or bending portion of the fastening body and/or the turning of the joints of the joint device(s) at least in the range of the clamping force dependent on a charging cycle of the battery cells is completely non-destructively reversibly elastic.
- the pressure clamping device is designed to be self-resetting, at least in the flexibility or deformation range that is caused by the swelling and swelling of the corresponding battery cell between its basic size and its swelling size due to cyclization.
- the yielding of the clamping joint device is at least partially plastic.
- the yielding of the clamping joint device is plastic in the region of a clamping force that is generated or applied to the clamping body due to a swelling of the corresponding battery cell that depends on the service life.
- a corresponding material selection is made in particular when producing the pressure clamping device, in particular the clamping joint device.
- a metal such as Aluminum
- the corresponding metal is mechanically, thermally and/or mechanically treated, for example surface-treated, both elastic yielding and plastic yielding of the clamping joint device can be implemented, with the elastic yielding behavior and the plastic yielding behavior, for example, merging into one another.
- the clamping joint device from a plastic, for example an elastomer, whereby the idea of a particularly large elastic flexibility range of the clamping joint device is particularly taken into account. Since the clamping body follows the expanding or decreasing external dimensions of the battery cells due to the plastic and/or elastic deformability or flexibility of the clamping joint device, a particularly tight fit, for example a particularly reliable clamping, of the battery cell pack in the frame device is ensured. A particularly favorable NVH quality (NVH: Noise, Vibrations, Harshness - noise, vibrations, roughness) is thus achieved.
- NVH Noise, Vibrations, Harshness - noise, vibrations, roughness
- the invention also relates to a frame device for clamping a battery cell pack.
- the frame device comprises a pressure clamping device designed according to the above description and a counter bearing, the counter bearing and the pressure clamping device being spaced apart from one another along a longitudinal direction of the frame device.
- the frame device has a tensioning device, which has a first tensioning element and a second tensioning element. The tensioning elements are spaced apart from one another along a transverse direction of the frame device.
- the pressure clamping device and the counter bearing are fastened to one another by means of the tension clamping elements, so that a clamping area is created between the pressure clamping device and the counter bearing along the longitudinal direction and along the transverse direction, into which the battery cell pack can be placed and clamped.
- the invention also relates to a battery which has a frame device designed in accordance with the above description and a battery cell pack.
- the battery cell pack comprises a multiplicity of battery cells arranged next to one another or one above the other and is clamped or clamped into the clamping region of the frame device.
- FIG. 1 shows in the single figure (FIG. 1) a schematic view of a battery, in particular a vehicle battery, which has a frame device with a pressure clamping device.
- a pressure clamp device 1 a frame device 2 and a battery 3 will be described together. Elements that are the same and have the same function are provided with the same reference symbols in the figure.
- the battery 3 has the frame device 2 which includes a pressure clamping device 1 . Furthermore, the battery 3 in the present example has a counter bearing 4 , a plurality of battery cells 5 being clamped between the counter bearing 4 and the pressure clamping device 1 .
- the counter bearing 4 can be another pressure clamping device 1, for example.
- the battery cells 5 are arranged to form a battery cell pack 7 along a longitudinal direction 6 of the battery 3, for example stacked to form a battery cell stack.
- the frame device 2 has a tensioning device 8, which has two tensioning elements 9, for example tie rods.
- the tensioning elements 9 or tie rods of the tensioning device 8 are spaced apart from one another along a transverse direction 10 of the battery 3 .
- a clamping area 11 of the frame device 2 is thus delimited by the pressure clamping device 1 , by the counter bearing 4 and by the tension clamping elements 9 .
- this clamping area 11 is the Battery cell pack 7 arranged or braced or clamped between the pressure clamping device 1 and the counter bearing 4 .
- the pressure clamping device 1 and the counter bearing 4 are fastened to one another by means of the tension clamping elements 9 .
- the pressure-tensioning device 1 has a fastening body 12, via which the pressure-tensioning device 1 is intended to be fastened—in the present example directly—to the tension-tensioning device 8, in this case to the tension-tensioning elements 9.
- the fastening body 12 has a fastening element 13, which is designed as a welding surface in the present example.
- the respective tensioning element 9 has a further fastening element 14 corresponding to the fastening element 13 of the pressure tensioning device 1, so that the pressure tensioning device 1, in particular its fastening body 12, and the tension tensioning device 8, in particular its tension tensioning elements 9, can be force-fitted by means of the fastening elements 13, 14. , are fastened to one another in a form-fitting and material-locking manner.
- the pressure clamping device 1 and the tension clamping device 8 are fixed to one another in that the tension clamping elements 9 and the fastening body 12 are welded to one another, in particular laser welded. This is indicated by the weld 15 in FIG.
- the tensioning elements 9 and the (respective) fastening body 12 are arranged immovably relative to one another.
- the battery 3 in particular the pressure clamping device 1 , has a plurality of fastening elements 13 , a number of fastening elements 14 and a number of welds 15 in the present example.
- the pressure clamping device 1 and the tension clamping device 8 can be connected to one another in a non-positive, positive and/or material manner in some other way, for example screwed, riveted, soldered to one another Etc.
- the pressure clamping device 1 also has a clamping body 16 which, in the present example, has a clamping surface 17 which corresponds to a contact surface 18 of the battery cell pack 7 . Because the battery cell pack 7 is clamped in the frame device 2, the clamping body 16 and the battery cell pack 7 bear against one another, in the present example indirectly against one another. Because in the present example there is a separating layer 19 between the clamping body 16 and the battery cell pack 7 provided so that the battery cell pack 7 and the clamping body 16 abut one another via the separating layer 19 .
- the contact surface 18 of the battery cell pack 7 is in particular formed at least partially by an outer surface of a “last” battery cell 5 .
- the pressure clamping device 1 also has a clamping joint device 20, by means of which the fastening body 12 and the clamping body 16 are connected to one another.
- the fastening body 12, the clamping body 16 and the clamping joint device 20 are formed in one piece with one another.
- the clamping joint device 20 is designed in such a way that - when a clamping force 21 acting in the direction of the fastening body 12 is applied to the clamping body 16 - the clamping body 16 is moved in a clamping direction 22 towards the fastening body 12, with the movement of the clamping joint device 20 yields in a defined way.
- the clamping joint device 20 yields in the clamping direction 22 .
- the tensioning body 16 then moves in relation to the fastening body 12 and in relation to the tensioning device 8, in particular to the tensioning elements 9, since the tensioning body 16 and the tensioning device 8 are not directly connected to one another.
- the clamping joint device 20 comprises a first joint device 23 or a plurality of first joint devices 23, as is shown in the left-hand half of FIG.
- the respective first joint device 23 has a first strap element 24 and a second strap element 25 as well as a swivel joint 26 on the fastening body side, a middle swivel joint 27 and a swivel joint 28 on the clamping body side.
- the strap elements 24, 25 are connected to one another in an articulated manner via the middle swivel joint 27.
- first strap element 24 and the fastening body 12 are connected to one another in an articulated manner by means of the rotary joint 26 on the fastening body side, whereas the second strap element 25 and the clamping body 16 are connected in an articulated manner to one another by means of the rotary joint 28 on the tensioning body.
- the clamping joint device 20 has the first joint device 23 and a further (second) joint device 29, with the joint devices 23, 29 a joint device pair 30 is formed.
- the clamping joint device 20 has in particular the joint device pair 30, a third band element 31 and a fourth band element 32 and a coupling swivel joint 33.
- This additional or second articulation device 29 and the first articulation device 23 are of identical or at least similar design.
- the articulation devices 23, 29 have the same or similar kinematic properties. It can be seen in FIG. 1 (in the right half of the figure) that the articulation devices 23, 29 can be designed as mirror images of one another.
- the third band element 31 and the central pivot joint 27 of the first joint device 23 are connected to one another in an articulated manner.
- the fourth band element 32 and a central pivot joint 34 of the second joint device 29 are connected to one another in an articulated manner.
- the band elements 31 , 32 are connected to one another in an articulated manner by means of the rotary coupling joint 33 .
- movement of the first joint device 23 and movement of the second joint device 29 are kinematically coupled to one another in that the two joint devices 23 , 29 are kinematically coupled to one another via the band elements 31 , 32 and via the rotary coupling joint 33 .
- the swivel joints 26, 27, 28, 34 and/or the coupling swivel joint 33 are designed as a respective film joint.
- all the joints used in the clamping joint device 20 are designed as a respective film joint.
- the pressure clamping device 1, the frame device 2 and/or the battery 3 can/can be designed with mirror plane symmetry, the corresponding mirror plane 35 being indicated by the dot-dash longitudinal lines 6. It is just as conceivable that the pressure clamping device 1, the frame device 2 and/or the battery 3 are/is constructed asymmetrically.
- the fastening body 12 has a deformation portion 36 which is designed in particular as a bending portion.
- this deformation portion 36 or bending portion is part of the clamping joint device 20 . It is provided that the clamping joint device 20 in at least partially yields in a defined manner in that the deformation portion 36 is deformed, that is to say, for example, the bending portion is bent.
- the respective joint device 23, 29 or the respective joint device pair 30 exhibits a resistance to articulated movement of the corresponding joint device 29, 23, 30.
- the deformation portion 36 of the attachment body 12 has a resistance to the deformation portion 36 being deformed.
- the resistance to the articulated movement of the corresponding articulation device 23, 29, 30 and the resistance to the deformation of the deformation portion 36 are of different strengths or sizes, so that clamping forces 21 of different strengths or strengths are required to overcome the corresponding resistance.
- the resistance to the articulated movement of the joint device 23, 29, 30 can be overcome by a first tensioning force 37, whereas this first tensioning force 37 is not sufficient to overcome the resistance to the deformation of the deformation portion 36.
- a second clamping force 38 is required to overcome the resistance to the deformation of the deformation portion 36 , which is greater than the first clamping force 37 , for example.
- the first clamping force 37 can be greater than the second clamping force 38 .
- a sequence is specified, based on which the clamping joint device 20 yields as intended.
- the respective resistance results and consequently whether the first clamping force 37 is greater than the second clamping force 38 or vice versa.
- the respective clamping force 21, 37, 38 is applied to the clamping body 16 of the pressure clamping device 1, in particular during operation of the pressure clamping device 1 or the frame device 2 or the battery 3, in that one or more of the battery cells 5, starting from their basic dimensions, are swelled to a degree swelling. This happens in particular due to electrical charging of the corresponding battery cell 5 and/or due to aging of the corresponding battery cell 5. Swelling caused by aging is not reversible, or only to a particularly small extent, whereas a discharging or charging-related swelling by means of an electrical discharging of the corresponding battery cell 5 at least is partially reversible.
- the yielding of the clamping joint device 20 is fully or partially non-destructively reversible and elastic.
- the yielding of the clamping joint device can have a first portion of flexibility that is non-destructively reversible and elastic, and a further portion of flexibility that is plastic, that is, irreversible. It is further provided that the aging-related swelling of the corresponding battery cell 5 takes place in the flexible area of the clamping joint device 20, which is plastic.
- the pressure clamping device 1, in particular its clamping body 16 follows the cyclic swelling and swelling of the corresponding battery cell 5, and thus the cyclic swelling and swelling of the battery cell pack 7, whereas the pressure clamping device 1, in particular its clamping body 16, follows the age-related, irreversible swelling of the The battery cell 5 or the battery cell pack 7 is followed by a plastic deformation or by a plastic yielding of the clamping joint device 20 .
- the pressure clamping device 1, the frame device 2 and the battery 3 show a respective possibility of using or replacing the battery cells 5, which change between the electrically charged state and the electrically discharged state and with regard to their spatial extent as a result of ageing, in a particularly advantageous manner. to arrange.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/576,423 US20240313317A1 (en) | 2021-09-22 | 2022-08-23 | Compressive Stressing Device for a Frame Arrangement for Clamping a Battery Cell Assembly, Frame Arrangement and Battery |
KR1020237041536A KR20240004854A (ko) | 2021-09-22 | 2022-08-23 | 배터리 셀 팩, 프레임 장치 및 배터리를 조이기 위한 프레임 장치용 압축 응력 장치 |
JP2024516906A JP2024535049A (ja) | 2021-09-22 | 2022-08-23 | バッテリセルパックを挟締するフレーム装置用の圧締装置、フレーム装置およびバッテリ |
CN202280042805.5A CN117546351A (zh) | 2021-09-22 | 2022-08-23 | 用于夹紧电池单体组的框架装置的压力夹紧器、框架装置和电池 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021124467.6A DE102021124467A1 (de) | 2021-09-22 | 2021-09-22 | Druckspanneinrichtung für eine Rahmenvorrichtung zum Einspannen eines Batteriezellenpakets, Rahmenvorrichtung und Batterie |
DE102021124467.6 | 2021-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023046389A1 true WO2023046389A1 (de) | 2023-03-30 |
Family
ID=83059265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/073371 WO2023046389A1 (de) | 2021-09-22 | 2022-08-23 | Druckspanneinrichtung für eine rahmenvorrichtung zum einspannen eines batteriezellenpakets, rahmenvorrichtung und batterie |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240313317A1 (de) |
JP (1) | JP2024535049A (de) |
KR (1) | KR20240004854A (de) |
CN (1) | CN117546351A (de) |
DE (1) | DE102021124467A1 (de) |
WO (1) | WO2023046389A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102022122230A1 (de) | 2022-09-02 | 2024-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Diagnose-Vorrichtung für Hochvoltspeicher in elektrifizierten Kraftfahrzeugen |
Citations (6)
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DE102018216835A1 (de) | 2018-10-01 | 2020-04-02 | Audi Ag | Batteriemodul und Kraftfahrzeug |
DE102019201126A1 (de) | 2019-01-29 | 2020-07-30 | Audi Ag | Batteriemodul für ein Kraftfahrzeug und Kraftfahrzeug mit einem solchen Batteriemodul |
CN112421167A (zh) * | 2020-11-26 | 2021-02-26 | 刘桂兰 | 一种锂电池保护装置 |
CN212934739U (zh) * | 2020-07-14 | 2021-04-09 | 惠州市亿兆能源科技有限公司 | 一种电池模组用电池包箱 |
CN213584059U (zh) * | 2020-11-24 | 2021-06-29 | 苏州精控能源科技有限公司 | 一种夹持固定装置 |
CN213692247U (zh) * | 2020-11-12 | 2021-07-13 | 肃宁县八度新能源科技有限公司 | 一种便于移动的新型锂电池承装箱 |
-
2021
- 2021-09-22 DE DE102021124467.6A patent/DE102021124467A1/de active Pending
-
2022
- 2022-08-23 WO PCT/EP2022/073371 patent/WO2023046389A1/de active Application Filing
- 2022-08-23 US US18/576,423 patent/US20240313317A1/en active Pending
- 2022-08-23 JP JP2024516906A patent/JP2024535049A/ja active Pending
- 2022-08-23 KR KR1020237041536A patent/KR20240004854A/ko unknown
- 2022-08-23 CN CN202280042805.5A patent/CN117546351A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018216835A1 (de) | 2018-10-01 | 2020-04-02 | Audi Ag | Batteriemodul und Kraftfahrzeug |
DE102019201126A1 (de) | 2019-01-29 | 2020-07-30 | Audi Ag | Batteriemodul für ein Kraftfahrzeug und Kraftfahrzeug mit einem solchen Batteriemodul |
CN212934739U (zh) * | 2020-07-14 | 2021-04-09 | 惠州市亿兆能源科技有限公司 | 一种电池模组用电池包箱 |
CN213692247U (zh) * | 2020-11-12 | 2021-07-13 | 肃宁县八度新能源科技有限公司 | 一种便于移动的新型锂电池承装箱 |
CN213584059U (zh) * | 2020-11-24 | 2021-06-29 | 苏州精控能源科技有限公司 | 一种夹持固定装置 |
CN112421167A (zh) * | 2020-11-26 | 2021-02-26 | 刘桂兰 | 一种锂电池保护装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2024535049A (ja) | 2024-09-26 |
DE102021124467A1 (de) | 2023-03-23 |
US20240313317A1 (en) | 2024-09-19 |
CN117546351A (zh) | 2024-02-09 |
KR20240004854A (ko) | 2024-01-11 |
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