CN113571753A - Method for producing a power cell for a motor vehicle and corresponding production device - Google Patents

Method for producing a power cell for a motor vehicle and corresponding production device Download PDF

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Publication number
CN113571753A
CN113571753A CN202110464220.XA CN202110464220A CN113571753A CN 113571753 A CN113571753 A CN 113571753A CN 202110464220 A CN202110464220 A CN 202110464220A CN 113571753 A CN113571753 A CN 113571753A
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China
Prior art keywords
battery cells
cell
pressure
extension
actual value
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Pending
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CN202110464220.XA
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Chinese (zh)
Inventor
胡文锟
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Audi AG
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Audi AG
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Publication of CN113571753A publication Critical patent/CN113571753A/en
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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
    • 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
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M50/233—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
    • 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
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The invention relates to a method for producing a power cell (2) for a motor vehicle, wherein a plurality of battery cells (4) of a cell stack (3) of the power cell (2) are arranged next to one another, said plurality of battery cells being pressed in a pressing direction with a specific pressing pressure. Measuring the actual value of the extension of the monomer group (3), and increasing the compaction pressure when the preset maximum value of the extension is exceeded until the actual value is not greater than the maximum value and/or the compaction pressure reaches the maximum pressure; and/or measuring the actual value of the extension of the set of monomers (3), reducing the compacting pressure when the preset minimum value of the extension is lower, until the actual value is not less than said minimum value and/or the compacting pressure reaches a minimum pressure.

Description

Method for producing a power cell for a motor vehicle and corresponding production device
Technical Field
The invention relates to a method for producing a power cell for a motor vehicle, wherein a plurality of battery cells of a cell stack of the power cell are arranged next to one another, said plurality of battery cells being pressed in a pressing direction with a specific pressing pressure. The invention also relates to a manufacturing device for manufacturing a power battery of a motor vehicle.
Background
Known from the prior art is, for example, the publication DE 102011112531B 3. This document describes a method for producing a battery device from a plurality of prismatic battery cells by means of pressing, wherein it is checked during the pressing operation whether one of the prismatic battery cells protrudes rearward relative to the other battery cells in a direction different from the direction of the pressing force. If this is the case, the pressing force is cancelled, so that the battery cell can be relaxed. Subsequently, it is pressed again and checked until finally no more cells protrude in said direction.
Disclosure of Invention
The object of the present invention is to provide a method for producing a power cell for a motor vehicle, which has advantages over known methods, in particular can be realized reliably and with a reliable process.
The above object is achieved with a method for producing a power cell for a motor vehicle having the features of claim 1. Measuring the actual value of the elongation of the cell stack, increasing the pressing pressure when a preset maximum value of the elongation is exceeded, until the actual value is not greater than the maximum value and/or the pressing pressure reaches a maximum pressure; and/or measuring an actual value of the extension dimension of the monomer group, and reducing the compaction pressure when a preset minimum value of the extension dimension is lower until the actual value is not less than the minimum value and/or the compaction pressure reaches a minimum pressure.
The method described is used to produce a power cell which is preferably designed as a component of a motor vehicle, but which can also be provided independently of the motor vehicle. The power cell serves for temporarily storing electrical energy, which is used in particular for operating a drive or a power unit of the motor vehicle. In this connection, the electrical energy stored in the power cell is used to provide a drive torque intended to drive the motor vehicle by means of the drive or the drive unit.
The power cell has, for example, a cell housing and at least one cell module. A receiving space may be present in the battery housing, which is provided and designed to receive the cell module. The monomer module is used for temporarily storing electric energy. Preferably, a plurality of such cell modules are arranged in the battery housing, in particular in the receiving space, and are electrically connected to one another. If reference is made within the scope of the present description to a monomer module or to at least one monomer module, embodiments can always be transferred to each of a plurality of monomer modules as long as a plurality of monomer modules are present.
The cell module has at least a cell group, which itself has a plurality of battery cells. The battery cell is preferably provided as a prismatic battery cell or as a pouch battery cell. In the case of prismatic cells, these are preferably constructed with a rigid cell housing. Conversely, if the battery cells are provided as pouch type battery cells, the respective cell housings may be flexible and provided in the form of pouch type housings. For example, the cell stack is arranged in a module housing of the battery module.
In order to produce power cells and, in particular, cell stacks, the battery cells of the cell stack are now first arranged next to one another and subjected to a compressive pressure. The individual cells are arranged next to one another in the pressing direction and are subsequently pressed against one another in the pressing direction, so that the individual cells are pressed against one another. The pressing of the cell stack serves in particular to achieve a specific dimensioning of the cell stack, so that the cell stack can then be arranged in the module housing.
Since the battery cells of a cell stack usually have relatively large manufacturing tolerances, the dimensions of the battery cells, in particular in the pressing direction, fluctuate. That is, after the battery cells are arranged side by side, the size of the cell group is not necessarily comparable to the theoretical size. Since the compression of the battery cells is usually carried out with a constant compression pressure, the dimensions of the cell stack after compression may lie outside the tolerance window.
For this reason, it is now provided that the contact pressure is selected variably. For this purpose, the actual value of the extension of the monomer assembly is first measured during the pressing. If the actual value of the extension exceeds the maximum value of the extension, i.e. the actual value is greater than the maximum value, the compacting pressure is increased. This raising of the compaction pressure is performed until the actual value is not greater than the maximum value or the compaction pressure reaches the maximum pressure. For example, the pressing is continued until the desired size of the cell stack is achieved or the pressing pressure exceeds the maximum value for pressing the cell stack.
In addition or alternatively, it is provided that, after the measurement of the actual value of the extension of the cell stack, the compression pressure is reduced if the extension of the cell stack is below a minimum value of the extension, i.e. below this minimum value. The reduction of the compaction pressure is continued until the actual value is not less than the minimum value or the compaction pressure reaches the minimum pressure. In other words, the compaction pressure is reduced until the monomer package reaches the desired size or the minimum value that should be used for compaction.
In general, the actual value of the extension of the cell stack is measured and the compression pressure is set as long as the actual value of the extension lies outside a range jointly defined by a minimum value and a maximum value. The adjustment of the compacting pressure is carried out until the actual value of the extension is within the range defined by the minimum and maximum values or until the compacting pressure leaves the range defined by both the minimum and maximum pressure.
The adjustment of the compaction pressure was carried out under the following conditions: the actual value is outside the range defined by the minimum and maximum values on the one hand and the compaction pressure is within the range defined by the minimum and maximum pressure on the other hand. Thus, the manufacturing tolerances of the battery cells are compensated when manufacturing the cell stack, so that the cell stack has the desired dimensions. Meanwhile, the single battery pack is prevented from being damaged or the single battery is prevented from being insufficiently compressed by monitoring the compression pressure. Thereby, an extremely high process reliability is achieved in the manufacture of the power cell.
One development of the invention provides that a cell separation element is arranged between every two battery cells. The cell separation element is in particular a spacer for the cells, which reliably separates the cells from one another, in particular mechanically and/or electrically. In the latter case, the monomer separating element is formed from a non-conductive material. Preferably, there is not only a single cell separation element in the cell group, but a plurality of cell separation elements, i.e. one cell separation element between each two of the battery cells.
Since the cell separating element, like the battery cells, also has high manufacturing tolerances, the possible deviations of the size of the cell stack from the intended size increase further. This is considered by the method described above. The cell separation element may further improve the electrical and/or mechanical reliability of the power cell. Furthermore, by using the described method, no disadvantages arise in the manufacture of the power cell.
A further development of the invention provides that the actual value of the elongation is measured without the cell stack being loaded/relaxed. In this respect, no provision is made for: the compaction is continuously maintained until the actual value of the extension is not greater than the maximum value and/or not less than the minimum value. In contrast, the compaction pressure is periodically reduced, in particular to zero, so that the monomer assembly is not loaded. By measuring the actual value of the extension when the cell stack is not loaded and subsequently adjusting the pressing pressure, an inadmissibly high mechanical load on the cell stack is avoided when forming the power cell, in particular after the cell stack is inserted into the module housing.
In a further development of the invention, the dimensions of a number of battery cells in the pressing direction are determined before the arrangement, and the battery cells for the cell stack are selected from the number of battery cells such that the sum of the dimensions of the battery cells lies between a minimum and a maximum of the extension dimension. Thus, more cells are first provided than are needed to make the cell stack. Therefore, the number of battery cells included in the certain number of battery cells is greater than the number of the plurality of battery cells that are a constituent of the cell group. For example, a certain number of battery cells, which is at least twice the number of battery cells subsequently forming part of the cell stack, is dimensioned before the pressing.
Depending on the size of the battery cells, the battery cells for a cell stack composed of a plurality of battery cells are selected such that the sum of the sizes of the battery cells in the pressing direction is not less than a minimum value and not more than a maximum value. In other words, the battery cells used to construct the cell stack are selected such that the dimensions of the battery cells with tolerances add up to the overall dimension of the cell stack, which corresponds to the desired dimension, i.e. in particular lies between a minimum and a maximum value.
After the selection of the battery cells in this way, the battery cells are arranged next to one another for the construction of the cell stack and are subsequently pressed against one another in the pressing direction by means of a pressing pressure. The described method makes it possible to reliably produce a power cell in a special process, in particular to ensure that the cell stack has the desired dimensions after compression.
In a further development of the invention, prior to the arrangement, in addition to the size of the number of battery cells, the size of a number of cell separation elements is also determined, from which the battery cells are selected and from which the cell separation elements are selected such that the sum of the sizes of the selected battery cells and the cell separation elements lies between a minimum and a maximum of the extension size. Thus, in addition to the battery cells, at least one cell separation element also together forms a cell stack of the power cell. In this case, it is particularly preferred that one such cell separation element is also arranged between every two of the battery cells. By selecting not only the battery cells from the plurality of battery cells, but also the cell separation elements from the plurality of cell separation elements, the above-mentioned high process reliability is achieved by ensuring that the cell stack has the desired dimensions at least after compression.
A further development of the invention provides that the number of battery cells comprises more battery cells than the cell stack, in particular at least 2 times, at least 3 times, at least 4 times or at least 5 times as many battery cells as the cell stack. This has already been indicated above. The more battery cells the number of battery cells comprises, the more precisely the extension of the cell stack can be adjusted to the desired extension. For example, a plurality of power cells or a plurality of cell groups are formed using the described method, wherein a cell group is assembled from a plurality of battery cells in such a way that the dimensions of the cell groups are identical or at least substantially identical.
For example, the cell stack is composed of a plurality of battery cells such that the dimensions of the cell stacks differ from one another by at most 5%, at most 7.5%, or at most 10% in the pressing direction. Accordingly, after the battery cells are arranged side by side for the construction of the cell stack, the cell stack already has the desired dimensions or approximately the desired dimensions, so that in turn a high process reliability is ensured.
In a development of the invention, the pressing pressure is applied to the cell stack by applying pressing forces on opposite sides of the cell stack. In this connection, movable pressure pieces are arranged on both sides of the cell stack, by means of which the pressing of the battery cells is effected. For pressing, the pressure elements are moved toward one another, so that a corresponding pressing force is applied to the cell stack by each pressure element, thereby providing a pressing pressure. This method ensures uniform compaction of the monomer groups.
One development of the invention provides that at least 12, at least 14 or at least 16 battery cells are arranged next to one another in order to form a cell stack. Due to the large number of battery cells, the individual tolerances of the battery cells add up to a high overall tolerance of the cell stack. For this reason, the described method for producing a power cell can be used particularly advantageously for cell stacks having at least the mentioned number of battery cells.
In a development of the invention, the cell stack is inserted into the module housing after the pressing. The module housing has also been indicated. The module housing is preferably substantially rigid and has a rectangular basic structure, i.e. in particular a cuboid shape. After pressing, the monomers are assembled into the module housing and the module housing is closed. Subsequently, the module housing may be inserted into a battery housing for manufacturing a power cell. The use of a module housing has the advantage that the individual cell groups are reliably separated within the battery housing.
The invention also relates to a production device for producing a power cell of a motor vehicle, in particular for carrying out the method according to embodiments within the scope of the present description, wherein the production device is provided and designed to arrange a plurality of battery cells of a cell stack of the power cell side by side and to be pressed in a pressing direction with a specific pressing pressure.
The production device is also provided and designed to measure an actual value of the elongation of the individual elements and to increase the pressing pressure when a preset maximum value of the elongation is exceeded, until the actual value is not greater than the maximum value and/or the pressing pressure reaches a maximum pressure.
Additionally or alternatively, the production device is further configured and constructed to measure an actual value of the extension of the cell stack, and to reduce the pressing pressure when a preset minimum value of the extension is undershot until the actual value is not less than the minimum value and/or the pressing pressure reaches a minimum pressure.
The advantages of this design of the production device or of this method are already indicated. Both the manufacturing plant and the method for its operation can be modified according to the embodiments within the scope of the present description, reference being made to the relevant description.
Drawings
The invention is explained in detail below with the aid of embodiments shown in the drawings, without limiting the invention. Here:
fig. 1 shows a schematic view of a production plant for producing a power cell for a motor vehicle.
List of reference numerals:
1 manufacturing apparatus
2 power battery
3 monomer group
4 Battery monomer
5 monomer separation element
6 pressure piece
Detailed Description
Fig. 1 shows a schematic illustration of a production device 1, which production device 1 is provided and designed for producing a power cell 2. In this case, only the cell stack 3 of the power cell is visible, which is composed of a plurality of battery cells 4 and a plurality of cell separation elements 5. In particular, a cell separation element 5 is arranged between each two of the battery cells 4. The production device 1 has a pressure element 6, by means of which the pressing of the cell stack 3 can be carried out.
To produce the power cell 2, the battery cells 4 of the power cell 2 are first arranged side by side and a cell separation element 5 is inserted between the battery cells. Subsequently, the cell group 3 of the battery cells 4 and the cell separation elements 5 is pressed by means of the pressure element 6, i.e. in the pressing direction. During the pressing, a specific pressing pressure is set.
In order to ensure reproducible dimensioning of the cell stack 3, it is now provided that the actual value of the extent of the cell stack 3 in the pressing direction is measured during pressing. If the actual value is greater than the maximum value of the extension, the compacting pressure is increased. This is done in particular until the actual value is not greater than the maximum value or, alternatively, the compacting pressure reaches the maximum pressure. In addition or alternatively, it can be provided that the actual value of the extension of the cell stack 3 is measured and compared with the minimum value of the extension.
If the actual value is less than the minimum value, the compaction pressure is reduced, preferably until the actual value reaches or exceeds the minimum value, or alternatively the compaction pressure reaches a minimum pressure. For example, it is provided that a pressing pressure between a minimum pressure and a maximum pressure is used at the beginning of the pressing. For example, the pressing pressure at the start of pressing corresponds to the minimum pressure or an intermediate value between the minimum pressure and the maximum pressure.
Subsequently, the compacting pressure is varied according to the actual value of the extension until the actual value is less than or equal to the maximum value and/or greater than or equal to the minimum value. This results in reproducible dimensions of the cell stack 3, so that the production of the power cell 2 can be reliably carried out in a special process.

Claims (10)

1. A method for producing a power cell (2) of a motor vehicle, wherein a plurality of battery cells (4) of a cell stack (3) of the power cell (2) are arranged next to one another, said plurality of battery cells being pressed in a pressing direction with a specific pressing pressure,
it is characterized in that the preparation method is characterized in that,
measuring the actual value of the extension of the monomer group (3), and increasing the compaction pressure when the preset maximum value of the extension is exceeded until the actual value is not greater than the maximum value and/or the compaction pressure reaches the maximum pressure;
and/or
Measuring the actual value of the extension of the set of cells (3), reducing the compaction pressure when the preset minimum value of the extension is lower, until the actual value is not less than said minimum value and/or the compaction pressure reaches a minimum pressure.
2. Method according to claim 1, characterized in that a cell separation element (5) is arranged between every two battery cells (4).
3. Method according to any of the preceding claims, characterized in that the actual value of the extension dimension is measured without the cell group (3) being loaded.
4. Method according to any of the preceding claims, characterized in that the dimensions of a number of battery cells (4) in the pressing direction are determined before arranging, from which number of battery cells (4) for the cell group (3) are selected such that the sum of the dimensions of these battery cells lies between the minimum and the maximum of the extension dimension.
5. Method according to any of the preceding claims, characterized in that prior to the arranging, in addition to the dimensioning of the number of battery cells (4), also a number of cell separation elements (5) is dimensioned, from which number of battery cells (4) are selected and from which number of cell separation elements (5) are selected such that the sum of the dimensions of the selected battery cells and cell separation elements lies between the minimum and maximum values of the extension dimension.
6. The method according to any one of the preceding claims, characterized in that the number of battery cells (4) contains more battery cells (4) than the cell stack (3).
7. Method according to any of the preceding claims, characterized in that the compacting pressure is created on the cell group (3) by applying compacting forces on opposite sides of the cell group (3).
8. Method according to any of the preceding claims, characterized in that for forming a cell group (3) at least 12, at least 14 or at least 16 battery cells (4) are arranged side by side.
9. Method according to any of the preceding claims, characterized in that the cell stack (3) is inserted into the module housing after pressing.
10. A production device (1) for producing a power cell (2) of a motor vehicle, in particular for carrying out a method according to one or more of the preceding claims, wherein the production device (1) is provided and configured to arrange a plurality of battery cells (4) of a cell stack (3) of the power cell (2) side by side and to press them in a pressing direction with a specific pressing pressure,
it is characterized in that the preparation method is characterized in that,
the production device (1) is also designed and configured to measure an actual value of the extension of the cell stack (3) and to increase the pressing pressure when a preset maximum value of the extension is exceeded, until the actual value is not greater than the maximum value and/or the pressing pressure reaches a maximum pressure;
and/or
The production device (1) is also provided and designed to measure an actual value of the extension of the cell stack (3) and to reduce the pressing pressure when a preset minimum value of the extension is undershot until the actual value is not less than the minimum value and/or the pressing pressure reaches a minimum pressure.
CN202110464220.XA 2020-04-28 2021-04-27 Method for producing a power cell for a motor vehicle and corresponding production device Pending CN113571753A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020111570.9A DE102020111570A1 (en) 2020-04-28 2020-04-28 Method for manufacturing a traction battery for a motor vehicle and a corresponding manufacturing device
DE102020111570.9 2020-04-28

Publications (1)

Publication Number Publication Date
CN113571753A true CN113571753A (en) 2021-10-29

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DE102013201351A1 (en) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Device for aligning e.g. lithium ion batteries of module for e.g. laptop, has stamper applying pressure to batteries and extended along first direction, pressing batteries on support along direction vertical to first and second directions
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