DE102011115495A1 - Method and system for producing an electrochemical cell and battery having a number of said electrochemical cells - Google Patents

Abstract

A method for producing electrochemical cells (1) for a battery comprises the steps of: (S2) feeding a preliminary product of the electrochemical cell (1) to a filling device (11), (S3) filling the preliminary product of the electrochemical cell (1) with a Electrolytes, (S4) supplying the preliminary product of the electrochemical cell (1) to a charging device (13), (S5) performing a first charging of the precursor of the electrochemical cell (1), (S10) supplying a precursor of the electrochemical cell (1) a rolling device (17), (S11) rolling the precursor of the electrochemical cell (1) with at least one, preferably two rolling rollers (18, 19), (S12) feeding the precursor of the electrochemical cell (1) to a measuring device (21) , (S13) acquiring parameter data (DPar.) Of the precursor of the electrochemical cell (1) for determining at least one subsequent treatment of the precursor of the electrochemical cell (1), (S14) transmitting the parameter data (DPar.) To a control unit (22), (S15) assigning the precursor of the electrochemical cell (1) to the parameter data (DPar.), Preferably storing the parameter data (DPar.) To the preliminary product of the electrochemical cell Cell (1), (S16) determining, by means of the control unit (22), whether the electrochemical cell precursor (1) assigned to the parameter data has a predetermined relationship of the parameter data (DPar.) With respect to predetermined parameter values (WPar., WPar.1 , WPar.2, WPar.3, WPar.4, WPart.5), (S17a) performing a first predetermined treatment of the precursor of the electrochemical cell (1) when the presence of the predetermined relationship of the parameter data (DPar.) With respect has been determined to be predetermined (WPar., WPar.1, WPar.2, WPar.3, WPar.4, WPart.5), and preferably (S17b) performing a second predetermined treatment of the precursor of the electrochemical cell (1), if a non-existence of the v or determined relationship of the parameter data (DPar.) with respect to the predetermined parameter values (WPar., WPar.1, WPar.2, WPar.3, WPar.4, WPart.5) has been determined.

Description

The invention relates to a method and a system for producing an electrochemical cell and to a battery having a number of electrochemical cells produced by this method.

Electrochemical energy stores, also referred to below as electrochemical or galvanic cells, are often produced in the form of stackable units, from which by combining a plurality of such cells batteries for different applications, in particular for use in electrically powered vehicles can be produced. The invention will be described in relation to the use in a motor vehicle, although it should be noted that such a method and a correspondingly designed electrochemical cell, regardless of motor vehicles z. B. can be operated in a stationary operation.

Various methods and systems for producing an electrochemical cell, corresponding electrochemical cells and batteries with a number of electrochemical cells are known from the prior art.

The present invention has for its object to provide an improved method and an improved system for producing electrochemical cells and a battery with a number of correspondingly produced electrochemical cells.

This object is achieved by a method for producing electrochemical cells according to claim 1, a system for producing electrochemical cells according to claim 17 and by a battery according to claim 20. The dependent claims relate to advantageous developments of the invention.

According to a first aspect, in a manufacturing method of electrochemical cells for a battery, this object is achieved in that the manufacturing method comprises the steps of: supplying a precursor of the electrochemical cell to a filling device, filling the precursor of the electrochemical cell with an electrolyte, feeding the Precursor of the electrochemical cell to a charging device, performing a first loading of the precursor of the electrochemical cell, feeding a precursor of the electrochemical cell to a rolling device, rolling the precursor of the electrochemical cell with at least one, preferably two rolling rollers, feeding the precursor the electrochemical cell to a measuring device, a detection of parameter data of the precursor of the electrochemical cell for determining at least one subsequent treatment for the precursor of the elect rochemical cell, transmitting the parameter data to a control unit, assigning the precursor of the electrochemical cell to the parameter data, preferably storing the parameter data to the precursor of the electrochemical cell, determining by means of the control unit whether for the product data assigned precursor of the electrochemical cell there is a predetermined relationship of the parameter data with respect to predetermined parameter values, performing a first predetermined treatment of the precursor of the electrochemical cell when the presence of the predetermined relationship of the parameter data with respect to the predetermined parameter values has been determined, and preferably performing a second predetermined treatment the precursor of the electrochemical cell when non-existence of the predetermined relationship of the parameter data with respect to the predetermined parameter values has been determined.

In this context, an electrochemical cell is to be understood as meaning an electrochemical energy store, that is to say a device which stores energy in chemical form, delivers it in electrical form to a consumer and preferably can also receive it in electrical form from a charging device. Important examples of such electrochemical energy stores are galvanic cells or fuel cells. The electrochemical cell has at least a first and a second device for storing electrically different charges, and a means for producing an electrical active connection of these two devices, wherein charge carriers can be moved between these two devices. Under the means for producing an electrical active compound z. B. to understand an electrolyte, which acts as an ion conductor.

In this context, a precursor of an electrochemical cell is to be understood as meaning, in particular, an electrode arrangement already provided with a cladding. Under the envelope is in this context to understand a device which also prevents the escape of chemicals from the electrode assembly into the environment. Further, the sheath may protect the chemical components of the electrode assembly from undesirable interaction with the environment. Preferably, the sheath protects the electrode assembly from the ingress of water or water vapor from the environment. The envelope is preferably formed like a film. The envelope should affect the passage of heat energy as little as possible. Preferably, the envelope has at least two molded parts.

An electrode arrangement in this context means the arrangement of at least two electrodes and an electrolyte arranged therebetween. The electrolyte may be partially absorbed by a separator. Then the separator separates the electrodes. The electrode arrangement also serves to store chemical energy and convert it into electrical energy. In the case of a rechargeable galvanic cell, the electrode assembly is also capable of converting electrical to chemical energy. Preferably, the electrodes are plate-shaped or foil-like. In the case of the electrode arrangement, the electrodes are preferably arranged in the form of a stack. According to another preferred embodiment, the electrodes may also be wound up. The electrode arrangement may preferably also comprise lithium or another alkali metal in ionic form.

In this context, parameter data should be understood to mean not only a plurality of parameter data, but possibly also a single parameter data. Accordingly, in this context, not only a number of predetermined parameter values but, if appropriate, also a single predetermined parameter value should be understood by predetermined parameter values.

Preferably, in the electrochemical cell manufacturing method, the step of first charging the precursor of the electrochemical cell is performed within 4 hours, and preferably within 3 hours after the step of performing the charging of the precursor of the electrochemical cell with an electrolyte.

Preferably, in the electrochemical cell manufacturing method, the step of first charging the precursor of the electrochemical cell is performed with a charging current that is in a range of 0.02 to 0.04 C, and is preferably 0.03 C.

Preferably, in the electrochemical cell manufacturing method, the step of first charging the preliminary product of the electrochemical cell is performed with a charging time which is in a range of 0.5 min to 2.0 min, and preferably 1 min.

Preferably, after the step of performing the first charging of the precursor of the electrochemical cell and before the step of supplying the precursor of the electrochemical cell to the rolling apparatus, the electrochemical cell manufacturing process comprises the steps of: supplying the preliminary product of the electrochemical cell to an aging apparatus and performing a first aging of the precursor of the electrochemical cell, in particular a tempering of the precursor of the electrochemical cell.

Preferably, after the step of rolling the precursor of the electrochemical cell with at least one, preferably two rolling rolls, the electrochemical cell manufacturing process comprises the steps of: feeding the precursor of the electrochemical cell to an aging device and performing a first aging of the precursor of the electrochemical cell; in particular a tempering of the precursor of the electrochemical cell.

Preferably, after the step of performing the first aging of the precursor of the electrochemical cell, the electrochemical cell preparation process comprises supplying the precursor of the electrochemical cell to the rolling apparatus and rolling the precursor of the electrochemical cell with at least one, preferably two, rolling rollers.

Preferably, prior to the step of supplying the precursor of the electrochemical cell to the filling device, the manufacturing method comprises the following step: applying the precursor of the electrochemical cell to a workpiece carrier.

Preferably, in the electrochemical cell manufacturing method, the step of acquiring parameter data includes at least one of detection steps of detecting a change in internal resistance of the precursor of the electrochemical cell after applying a pressure, particularly detecting a change in internal resistance upon application of pressure to side surfaces thereof flat designed electrochemical cell, detecting an internal resistance of the precursor of the electrochemical cell, detecting a hardness of the precursor of the electrochemical cell, detecting an internal pressure of the precursor of the electrochemical cell, detecting a rest voltage of the precursor of the electrochemical cell, detecting a capacity of the Precursor of the electrochemical cell or detecting internal structures of the precursor of the electrochemical cell by means of an X-ray method. In particular, the change in the internal resistance of the precursor of the electrochemical cell after applying pressure on side surfaces of the precursor electrochemical cells or the hardness of the precursor electrochemical cells have become the preferred parameters for assessing the quality of the precursors of electrochemical cells or for the determination subsequent treatments of precursors of electrochemical cells proved. When a pressure is applied to a precursor of the electrochemical cell and the precursor yields to the electrochemical cell, the internal resistance changes. Therefore, a pressure can be applied to the precursor of the electrochemical cell and the change of the internal resistance can be measured. The precursors of the electrochemical cells, which are relatively hard and whose internal resistance changes little after applying a pressure on the side surfaces, do not gas after closing. On the change of the internal resistance with respect to the pressure change can thus be a particularly simple assignment of the precursors of the electrochemical cell to different types of quality and thus to corresponding subsequent treatments.

In this context, a flat electrochemical cell is to be understood as meaning an electrochemical cell whose external shape is characterized by two essentially parallel surfaces whose vertical distance from one another is shorter than the average length of the cell measured parallel to these surfaces. Between these surfaces, often surrounded by a packaging or a cell housing, the electrochemically active components of the cell are arranged. Such cells are often surrounded by a multilayer foil packaging, which has at the edges of the cell packaging a sealed seam, which is formed by a permanent joining or closing of the foil packaging in the region of the sealed seam. Such cells are often referred to as pouch cells or as coffeebag cells.

Preferably, in the electrochemical cell manufacturing method, the step of determining by the control unit comprises at least one of the following determining steps: determining whether the transmitted parameter data has predetermined first parameter values, determining whether the transmitted parameter data does not have predetermined second parameter values, determining whether the transmitted parameter data exceed predetermined third parameter values, determining whether the transmitted parameter data falls below predetermined fourth parameter values or determining whether the transmitted parameter data are within a predetermined parameter value range by a predetermined fifth parameter value.

Preferably, in the electrochemical cell manufacturing method, the step of performing the first predetermined treatment of the precursor of the electrochemical cell comprises supplying the precursor of the electrochemical cell to a charging device and performing a second charging of the precursor of the electrochemical cell. More preferably, after the step of performing the second charging of the precursor of the electrochemical cell, the manufacturing process comprises supplying the precursor of the electrochemical cell to the rolling apparatus and rolling the precursor of the electrochemical cell with at least one, preferably two, rolling rollers.

Preferably, in the electrochemical cell fabrication process, the step of performing the first predetermined electrochemical cell precursor treatment comprises supplying the electrochemical cell precursor to an aging device and performing a second aging of the electrochemical cell precursor, particularly a second annealing of the precursor the electrochemical cell. More preferably, the electrochemical cell manufacturing process comprises, after the step of performing the second aging of the electrochemical cell precursor, feeding the precursor of the electrochemical cell to the rolling apparatus and rolling the electrochemical cell precursor with at least one, preferably two, rolling rollers.

Preferably, in the electrochemical cell manufacturing method, the step of performing the first predetermined treatment of the precursor of the electrochemical cell comprises supplying the precursor of the electrochemical cell to a forming device and performing a forming treatment of the precursor of the electrochemical cell. In this connection, particularly preferably, the step of performing a forming treatment of the precursor of the electrochemical cell comprises: performing a first forming of the precursor of the electrochemical cell in a range of 25 to 40% of the rated capacity, performing a second forming of the precursor of the electrochemical cell in a range of 75 to 90% of the rated capacity and performing a third forming of the precursor of the electrochemical cell to 100% of the rated capacity.

Preferably, performing the predetermined treatment of the precursor of the electrochemical cell in response to at least one of the determining steps comprises: advancing the electrochemical cell precursor to subsequent manufacturing stations when the presence of the predetermined relationship of the parameter data with respect to the predetermined parameter values has been determined ,

In a second aspect, this object is achieved in a system for producing electrochemical cells in that the A system comprising: a filling device configured to charge the precursor of the electrochemical cell with an electrolyte, a first delivery device configured to supply the precursor of the electrochemical cell to the charging device, a charging device configured to perform a first charging of the precursor of the electrochemical cell, a second delivery device for feeding the preliminary product of the electrochemical cell to the charging device, a rolling device with at least one, preferably two rolling rollers arranged and configured for rolling the precursor of the electrochemical cell, a fourth feeding device configured to supply the precursor of the electrochemical cell to the rolling device, a measuring device designed for acquiring parameter data of the precursor of the electrochemical cell for determining at least one subsequent treatment of the Precursor of the electrochemical cell, a fifth feeder designed to supply the precursor of the electrochemical cell to the measuring device, a control unit to which the detected parameter data of the precursor of the electrochemical cell are transmitted and which is configured, assigning the precursor of the electrochemical cell to the parameter data preferably, storing the parameter data to the precursor of the electrochemical cell, the controller further configured to determine whether there is a predetermined relationship of the parameter data with respect to predetermined parameter values for the precursor of the electrochemical cell assigned to the parameter data, and performing a first predetermined treatment of the precursor of the electrochemical cell when determining the presence of the predetermined relationship of the parameter data with respect to the predetermined parameter values and preferably to direct execution of a second predetermined treatment of the precursor of the electrochemical cell when non-existence of the predetermined relationship of the parameter data with respect to the predetermined parameter values has been determined.

In the system for producing electrochemical cells, the measuring device is preferably designed to detect at least one of the following parameters: Change of the internal resistance of the precursor of the electrochemical cell after application of a pressure, in particular change of the internal resistance after application of pressure to side surfaces of the preferably flat precursor of the electrochemical cell Cell, internal resistance of the precursor of the electrochemical cell, hardness of the precursor of the electrochemical cell, internal pressure of the precursor of the electrochemical cell, rest voltage of the precursor of the electrochemical cell, capacity of the precursor of the electrochemical cell or internal structures of the precursor of the electrochemical cell.

Preferably, the system for producing electrochemical cells comprises at least one of the following devices: an aging device designed for aging, in particular for tempering the precursor of the electrochemical cell and a third supply device configured for supplying the precursor of the electrochemical cell to the aging device.

According to a third aspect, the object is achieved for a battery in that their electrochemical cells have been prepared according to one of the manufacturing methods listed above and / or with one of the manufacturing systems listed above.

Aspects of the invention will be described in more detail below with reference to preferred embodiments and with the aid of figures. Showing:

1 a schematic representation of an electrochemical cell,

2 a schematic representation of a system for producing electrochemical cells according to the present invention,

3 a flow chart for a manufacturing method of electrochemical cells according to a first embodiment,

4a a flow chart of a first preferred embodiment,

4b a flow chart of a second preferred embodiment,

4c a flow chart of a third preferred embodiment,

5 a flow chart for the forming treatment of electrochemical cells,

6 a representation of preferred steps in the acquisition of parameter data and

7 a representation of preferred steps in determining whether a predetermined relationship of the parameter data with respect to predetermined parameter values are present.

1 shows a schematic representation of an electrochemical cell 1 , The electrochemical cell 1 has an active area 5 , one packaging cells 4 that the active area 5 surrounds, as well as a first current conductor 2 and a second current collector 3 on.

2 shows a schematic representation of a system for producing electrochemical cells 1 according to an embodiment. The manufacturing system 100 has a filling device 11 , which is designed and arranged, the precursor of the electrochemical cell 1 to fill with an electrolyte, and a first feeder 10 on, for supplying the precursor of the electrochemical cell 1 to the first filling device 11 is designed and arranged. Furthermore, the manufacturing system 100 a loading device 13 for charging the preliminary product of the electrochemical cell 1 is configured and arranged, and a second feeding device 12 on, for supplying the precursor of the electrochemical cell 1 to the loading device 13 is designed and arranged. Furthermore, the manufacturing system 100 an aging device 15 leading to aging of the precursor of the electrochemical cell 1 is configured and arranged, and a third feeding device 14 on, for supplying the precursor of the electrochemical cell 1 to the aging device 15 is designed and arranged. Furthermore, the manufacturing system 100 a rolling device 17 with at least one rolling roller, preferably two rollers 18 . 19 , and a fourth feeding device 16 on, for supplying the precursor of the electrochemical cell 1 to the rolling device 17 is designed and arranged. Furthermore, the manufacturing system 100 a measuring device 21 for acquiring parameter data D _{Par. of} the precursor of the electrochemical cell 1 is configured and arranged, and a fifth feeding device 20 on, for supplying the precursor of the electrochemical cell 1 to the measuring device 21 is designed and arranged. Furthermore, the manufacturing system 100 a control unit 22 on, to which the acquired parameter data D _{Par are} transmitted. Particularly preferably, the transport of the precursor of the electrochemical cell takes place 1 via a roller conveyor or a rail guide.

3 shows a flowchart for a manufacturing method of electrochemical cells 1 according to an embodiment of the present invention. In this production method, in a step S2, the precursor of the electrochemical cell 1 the filling device 11 fed. Subsequently, in a step S3, the precursor of the electrochemical cell 1 filled with an electrolyte. In a step S4, the precursor of the electrochemical cell 1 the loading device 13 fed. Subsequently, in a step S5, a first charging of the precursor of the electrochemical cell 1 carried out. In a step S6 and / or in a step S10, the precursor of the electrochemical cell 1 the rolling device 17 fed. Subsequently, in a step S7 or in a step S11, the precursor of the electrochemical cell 1 with at least one, preferably two rolling rollers 18 . 19 rolled. In a step S12, the precursor of the electrochemical cell 1 the measuring device 21 supplied and in a step S13, the parameter data D _{Par. Of} the precursor of the electrochemical cell 1 detected, wherein in a step S14, the detected parameter data D _Par the control unit 22 transmitted and in a step S15 this parameter data D _Par the precursor of the electrochemical cell 1 be assigned to. By means of the control unit 22 In step S16, it is determined whether or not these parameter data D _{Par have} a predetermined relationship with respect to predetermined parameter values W _Par .

Optionally having the parameter data D _Par., The predetermined relationship with respect to the predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _Part.5 is for this precursor of the Electrochemical cell selected and carried out a first predetermined treatment. Otherwise, if the parameter _data D _{Par. Does} not have the predetermined relationship with respect to the predetermined parameter values W _Par. , _{Par 1} , _{Par. 2} , W _Par.3 , W _Par.4 , W _Part this precursor of the electrochemical cell optionally a second predetermined treatment can be selected and performed. If it is determined in the step S16 that the parameter _data D _Par. The predetermined relationship with respect to the predetermined parameter values W _Par. , W _Par.1 , W _Par.2 , W _Par.3 , W _Par.4 , W _{Part. 5} , a first predetermined treatment is made on the precursor of the electrochemical cell in a step S17a 1 carried out. Preferably, prior to step S2 in a step S2, the precursor of the electrochemical cell 1 be applied to a workpiece carrier.

4a shows a flow chart of a portion of a preferred embodiment, wherein in a step S8, the precursor of the electrochemical cell 1 the aging device 15 is fed and subsequently in a step S9, a first aging of the precursor of the electrochemical cell 1 is carried out. In this embodiment, it is preferable to prior to the step S8 of supplying the preliminary product of the electrochemical cell 1 to the aging device 15 in a step S6, the precursor of the electrochemical cell 1 the rolling device 17 supplied and in a step S7, the precursor of the electrochemical cell 1 with at least one, preferably two rolling rollers 18 . 19 rolled.

4b shows a flowchart of a portion of another preferred embodiment, wherein in a step S18, the precursor of the electrochemical cell 1 the loading device 13 is fed and subsequently in a step S19, a second charging of the precursor of the electrochemical cell 1 is carried out. In this embodiment, it is preferred after step S19 of the second charging of the preliminary product of the electrochemical cell 1 in a step S20, the precursor of the electrochemical cell 1 the rolling device 17 fed and in a step S21, the precursor of the electrochemical cell 1 with at least one, preferably two rolling rollers 18 . 19 rolled.

4c shows a flowchart of a portion of another preferred embodiment, wherein in a step S22, the precursor of the electrochemical cell 1 the aging device 15 is fed and subsequently in a step S23, a second aging of the precursor of the electrochemical cell 1 is carried out. In this embodiment, it is preferred after step S23 of the second aging of the preliminary product of the electrochemical cell 1 in a step S24, the precursor of the electrochemical cell 1 the rolling device 17 supplied and in a step S25, the precursor of the electrochemical cell 1 with at least one, preferably two rolling rollers 18 . 19 rolled.

In the embodiments shown, for step S9, the first aging of the precursor of the electrochemical cell was performed 1 and for step S23, the second aging of the precursor of the electrochemical cell 1 an aging device 15 but it is also possible according to the present invention to use different aging devices for these steps.

In the embodiments shown, for the step S5 of the first charging of the preliminary product of the electrochemical cell 1 and for the step S18 of the second charging of the precursor of the electrochemical cell 1 a loading device 13 but it is also possible according to the present invention to use different charging devices for these steps.

In the embodiments shown, for the steps S7, S11, S21 and S25, the rolling of the preliminary product of the electrochemical cell was performed 1 a rolling device 17 but it is also possible according to the present invention to use different rolling devices for these steps.

Furthermore, in the 4a . 4b and 4c shown embodiments both together and with in the 5 shown embodiment can be combined arbitrarily.

5 shows a flowchart of a subsection of the manufacturing process electrochemical cells 1 , As in the description too 3 has been carried out, is for the precursor of the electrochemical cell 1 a first predetermined treatment is selected and performed when the parameter _data D _Par the predetermined relationship with respect to the predetermined parameter values W _Par , W _Par.1 , W _Par.2 , W _Par.3 , W _Par.4 , W _{Part. 5} , and may be for the precursor of the electrochemical cell 1 are optionally a second predetermined treatment is selected and conducted when the parameter data D _Par., the predetermined relationship with respect to the predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _Part.5 not have.

The first predetermined treatment includes a step S27 of performing a forming treatment of the precursor of the electrochemical cell 1 on. The step S27 of performing the forming treatment preferably comprises the following steps, in which, in a step S27a, a first formation of the precursor of the electrochemical cell 1 , is preferably carried out in a range of 25 to 40% of the rated capacity, and in which in a step S27bc a second forming of the precursor of the electrochemical cell 1 , is preferably carried out in a range of 75 to 90% of the rated capacity, and in which in a step S27c, a third forming of the precursor of the electrochemical cell 1 , preferably at 100% of the nominal capacity.

6 shows a representation of preferred steps in the acquisition of parameter data. Like in the 6 is shown, the step of acquiring parameter data, a step S13a of detecting a change in the internal resistance of the precursor of the electrochemical cell after applying a pressure, in particular on side surfaces of the precursor of the preferably flat designed electrochemical cell 1 and / or a step S13b of detecting an internal resistance of the precursor of the electrochemical cell 1 and / or a step S13c of detecting a hardness of the precursor of the electrochemical cell 1 and / or a step S13d of detecting an internal pressure of the precursor of the electrochemical cell 1 and / or a step S13e of detecting a rest voltage of the precursor of the electrochemical cell 1 and / or a step S13f of detecting a capacity of the precursor of the electrochemical cell 1 and / or a step S13g of detecting internal structures of the precursor of the electrochemical cell 1 by means of an X-ray method.

7 2 shows a representation of preferred embodiments in the determination in step S16 as to whether the parameter _data D _{Par has} a predetermined relationship with respect to predetermined parameter values W _Par , W _Par.1 , W _Par.2 , W _Par.3 , W _Par.4 , W _Part.5 . Like in the 7 5, step S16 may comprise a step S16a of determining whether the parameter data D _{Par has} first predetermined parameter values W _Par.1 and / or a step S16b of determining whether the parameter data D _Par second predetermined parameter values W _{Par.2 are} not and / or a step S16c of determining whether the parameter data D _Par exceeds predetermined third parameter values W _Par.3 and / or a step S16d of determining whether the parameter data D _{Par falls} below predetermined fourth parameter values W _Par.4 and / or a step S16e of determining whether the parameter data D _Par is within a parameter range by a predetermined fifth parameter value W _Par.3 .

The present invention further relates to a battery having these electrochemical cells, in particular a designed for use in a motor vehicle battery having these electrochemical cells.

LIST OF REFERENCE NUMBERS

1

electrochemical cell

2

first current conductor

3

second current collector

4

packaging cells

5

active area

10

first feeding device

11

filling device

12

second feeding device

13

Anladevorrichtung

14

third feeder

15

aging apparatus

16

fourth feeding device

17

rolling device

18

first roller

19

second roller

20

fifth feeder

21

measuring device

22

control unit

100

manufacturing system

S1

Applying the precursor to a workpiece carrier

S2

Feeding the precursor to a filling device

S3

Filling the precursor with an electrolyte

S4

Feeding the precursor to a loading device

S5

Performing a first loading of the precursor

S6

Feeding the precursor to a rolling device

S7

Rolling of the precursor with rolling rolls

S8

Feeding the precursor to an aging device

S9

Performing a first aging of the precursor

S10

Feeding the precursor to a rolling device

S11

Rolling of the precursor with rolling rolls

S12

Feeding the precursor to a measuring device

S13

Acquisition of parameter data of the primary product

S13a

Detecting a change in the internal resistance of the precursor after applying a pressure

S13b

Detecting an internal resistance of the precursor

S13c

Detecting a hardness of the precursor

S13d

Detecting an internal pressure of the precursor

S13e

Detecting a rest voltage of the precursor

S13f

Detecting a capacity of the precursor

S13g

Capture internal structures of the precursor

S14

Transmitting the parameter data to a control unit

S15

Assign the precursor to the parameter data

S16

Determining whether the transmitted parameter data has a predetermined relationship with respect to predetermined parameter values

S16a

Determining whether the transmitted parameter data has predetermined first parameter values

S16b

Determining whether the transmitted parameter data does not have predetermined second parameter values

S16c

Determining whether the transmitted parameter data exceeds predetermined third parameter values

S16d

Determining whether the transmitted parameter data falls below predetermined fourth parameter values

S16e

Determining whether the transmitted parameter data is within a predetermined parameter value range by a predetermined fifth parameter value

S17a

Selecting and performing a predetermined first treatment of the precursor of the electrochemical cell

S17b

Selecting and performing a predetermined second treatment of the precursor of the electrochemical cell

S18

Feeding the precursor to a loading device

S19

Performing a second loading of the precursor

S20

Feeding the precursor to a rolling device

S21

Rolling of the precursor with rolling rolls

S22

Feeding the precursor to an aging device

S23

Perform a second aging of the precursor

S24

Feeding the precursor to a rolling device

S25

Rolling of the precursor with rolling rolls

S26

Feeding the precursor to a forming device

S27

Performing a forming treatment of the precursor

S27a

Performing a first forming of the precursor in a range of 25 to 40% of the nominal capacity

S27b

Performing a second forming of the precursor in a range of 75 to 90% of the nominal capacity

S27c

Performing a third forming of the precursor to 100% of the nominal capacity

Claims (20)

Production process of electrochemical cells ( 1 ) for a battery, in particular for a battery designed for use in motor vehicles, characterized in that the manufacturing method comprises the steps: (S2) supplying a precursor of the electrochemical cell ( 1 ) to a filling device ( 11 ), (S3) filling the precursor of the electrochemical cell ( 1 ) with an electrolyte, (S4) supplying the precursor of the electrochemical cell ( 1 ) to a loading device ( 13 ), (S5) carrying out a first charging of the preliminary product of the electrochemical cell ( 1 ), (S6, S10) supplying the precursor of the electrochemical cell ( 1 ) to a rolling device ( 17 ), (S7, S11) rolling of the preliminary product of the electrochemical cell ( 1 ) with at least one, preferably two rolling rollers ( 18 . 19 ), (S12) supplying the preliminary product of the electrochemical cell ( 1 ) to a measuring device ( 21 ), (S13) acquiring parameter data (D _Par. ) Of the preliminary product of the electrochemical cell ( 1 ) for determining at least one subsequent treatment for the precursor of the electrochemical cell ( 1 ), (S14) transmitting the parameter data (D _Par. ) To a control unit ( 22 ), (S15) assigning the precursor of the electrochemical cell ( 1 ) to the parameter data (D _Par. ), preferably storing the parameter data (D _Par. ) to the precursor of the electrochemical cell ( 1 ), (S16) determining by means of the control unit ( 22 ), whether for the product data assigned precursor of the electrochemical cell ( 1 ) (A predetermined relationship of the parameter data (D _Par.) With respect to predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _Part.5) is present (S17a ) Carrying out a first predetermined treatment of the precursor of the electrochemical cell ( 1 ) when there is a presence of the predetermined relationship of the parameter _data ( _{Dpar .} ) with respect to the predetermined parameter values ( _{Wpar .} , _Wpar.1 , _Wpar.2 , _Wpar.3 , _Wpar.4 , _Wpart.5 ), and preferably (S17b) carrying out a second predetermined treatment of the precursor of the electrochemical cell ( 1 ), If a non-existence of the predetermined relationship of the parameter data (D _Par.) (With respect to the predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _{Part .5} ) has been determined. Production process of electrochemical cells ( 1 ) according to claim 1, characterized in that the step (S5) of first charging the precursor of the electrochemical cell ( 1 ) within 4 hours and preferably within 3 hours after the step (S3) of carrying out the filling of the preliminary product of the electrochemical cell ( 1 ) is performed with an electrolyte. Production process of electrochemical cells ( 1 ) according to claim 1 or 2, characterized in that in the step (S5) of the first charging of the preliminary product of the electrochemical cell ( 1 ) is carried out with a charging current which is in a range of 0.02 to 0.04 C, and preferably 0.03 C is. Production process of electrochemical cells ( 1 ) according to one of claims 1 to 3, characterized in that the step (S5) of first charging the precursor of the electrochemical cell ( 1 ) is carried out with a charging time which is in a range of 0.5 min to 2.0 min, and is preferably 1 mm. Production process of electrochemical cells ( 1 ) according to one of claims 1 to 4, characterized in that after the step (S5) of carrying out the first charging of the preliminary product of the electrochemical cell ( 1 ) and before the step (S10) of supplying the preliminary product of the electrochemical cell ( 1 ) to the rolling device ( 17 ) the manufacturing method comprises the following steps: (S8) supplying the precursor of the electrochemical cell ( 1 ) to an aging device ( 15 ) and (S9) carrying out a first aging of the preliminary product of the electrochemical cell ( 1 ) in particular a tempering of the precursor of the electrochemical cell ( 1 ). Production process of electrochemical cells ( 1 ) according to one of claims 1 to 4, characterized in that after the step (S7) of rolling the precursor of the electrochemical cell ( 1 ) with at least one, preferably two rolling rollers ( 18 . 19 ) the manufacturing method comprises the following steps: (S8) supplying the precursor of the electrochemical cell ( 1 ) to an aging device ( 15 ) and (S9) carrying out a first aging of the preliminary product of the electrochemical cell ( 1 ), in particular a tempering of the precursor of the electrochemical cell ( 1 ). Production process of electrochemical cells ( 1 ) according to claim 6, characterized in that after the step (S9) of carrying out the first age of the preliminary product of the electrochemical cell ( 1 ) the manufacturing method comprises: (S10) supplying the preliminary product of the electrochemical cell ( 1 ) to the rolling apparatus and (S11) rolling of the preliminary product of the electrochemical cell ( 1 ) with at least one, preferably two rolling rollers ( 18 . 19 ). Production process of electrochemical cells ( 1 ) according to one of claims 1 to 7, characterized in that the production process prior to the step (S2) of supplying the precursor of the electrochemical cell ( 1 ) to the filling device ( 11 ) comprises the step of: (S1) applying the precursor of the electrochemical cell ( 1 ) on a workpiece carrier. Production process of electrochemical cells ( 1 ) according to one of claims 1 to 8, characterized in that the step (S13) of acquiring parameter data (D _Par. ) comprises at least one of the following detection steps: (S13a) detecting a change in the internal resistance of the precursor of the electrochemical cell (S13a) 1 ) after applying a pressure, in particular detecting a change in the internal resistance after application of a pressure to side surfaces of the preferably flat-shaped electrochemical cell ( 1 ), (S13b) detecting an internal resistance of the precursor of the electrochemical cell (S13b) 1 ), (S13c) detecting a hardness of the precursor of the electrochemical cell (S13c) 1 ), (S13d) detecting an internal pressure of the precursor of the electrochemical cell (S13d) 1 ), (S13e) detecting a quiescent voltage of the precursor of the electrochemical cell ( 1 ), (S13f) detecting a capacity of the precursor of the electrochemical cell (S13f) 1 ) or (S13g) detecting internal structures of the precursor of the electrochemical cell ( 1 ) by means of an X-ray method. Production process of electrochemical cells ( 1 ) according to one of claims 1 to 9, characterized in that the step (S16) of determining by means of the control unit ( 21 ) determines at least one of the following determining steps: (S16a) determining whether the transmitted parameter data (D _par. ) has predetermined first parameter values (W _Swt.1 ), (S16b) determining whether the transmitted parameter data (D _par. ) are predetermined second parameter values (W _Swt.2) does not comprise (S16c) determining whether the transmitted parameter data (D _par.) predetermined third parameter values (W _Swt.3) exceed (S16d) determining whether the parameter data transmitted (D _par.) predetermined fourth parameter values (W _Swt.4) below or determining (S16e) whether the parameter data transmitted (D _par.) within a predetermined parameter value range by a predetermined fifth parameter value (W _Swt.5) are located. Production process of electrochemical cells ( 1 ) according to any one of claims 1 to 10, characterized in that the step (S15a) of carrying out the first predetermined treatment of the precursor of the electrochemical cell ( 1 ): (S18) supplying the precursor of the electrochemical cell ( 1 ) to a loading device ( 13 ) and (S19) carrying out a second charging of the preliminary product of the electrochemical cell ( 1 ). Production process of electrochemical cells ( 1 ) according to claim 11, characterized in that after the step (S19) of carrying out the second charging of the preliminary product of the electrochemical cell ( 1 ) the production process comprises: (S20) supplying the preliminary product of the electrochemical cell ( 1 ) to the rolling device and (S21) rolling of the preliminary product of the electrochemical cell ( 1 ) with at least one, preferably two rolling rollers ( 18 . 19 ). Production process of electrochemical cells ( 1 ) according to one of claims 1 to 12, characterized in that the step (S17a) of carrying out the first predetermined treatment of the precursor of the electrochemical cell ( 1 ): (S22) supplying the precursor of the electrochemical cell ( 1 ) to an aging device ( 15 ) and (S23) carrying out a second aging of the preliminary product of the electrochemical cell ( 1 ) in particular a second annealing of the precursor of the electrochemical cell ( 1 ). Production process of electrochemical cells ( 1 ) according to claim 13, characterized in that after the step (S22) of carrying out the second aging of the preliminary product of the electrochemical cell ( 1 ) the manufacturing method comprises: (S24) supplying the preliminary product of the electrochemical cell ( 1 ) to the rolling apparatus and (S25) rolling of the preliminary product of the electrochemical cell ( 1 ) with at least one, preferably two rolling rollers ( 18 . 19 ). Production process of electrochemical cells ( 1 ) according to one of claims 1 to 14, characterized in that the step (S17a) of carrying out the first predetermined treatment of the precursor of the electrochemical cell ( 1 ): (S26) supplying the precursor of the electrochemical cell ( 1 ) to a forming device, and (S27) performing a forming treatment of the precursor of the electrochemical cell ( 1 ). Production process of electrochemical cells ( 1 ) according to claim 15, characterized in that the step (S27) of carrying out the forming treatment of the preliminary product of the electrochemical cell ( 1 ) (S27a) performing a first formation of the precursor of the electrochemical cell ( 1 ) in a range of 25 to 40% of the rated capacity, (S27b) performing a second forming of the precursor of the electrochemical cell ( 1 ) in a range of 75 to 90% of the rated capacity and (S27c) performing a third forming of the precursor of the electrochemical cell ( 1 ) to 100% of the rated capacity. System for producing electrochemical cells ( 1 ) according to a manufacturing method according to one of claims 1 to 16, comprising: - a filling device ( 11 ) configured to fill the precursor of the electrochemical cell ( 1 ) with an electrolyte, - a first feeding device ( 10 ) configured to supply the precursor of the electrochemical cell ( 1 ) to the filling device ( 11 ), - a loading device ( 13 ) configured to carry out a first charging of the precursor of the electrochemical cell ( 1 ), - a second feeding device ( 12 ) configured to supply the precursor of the electrochemical cell ( 1 ) to the loading device ( 13 ), - a rolling device ( 17 ) with at least one, preferably two rolling rollers ( 18 . 19 ) and configured to roll the precursor of the electrochemical cell ( 1 ), - a fourth feeding device ( 16 ) configured to supply the precursor of the electrochemical cell ( 1 ) to the rolling device ( 17 ), - a measuring device ( 21 ) configured for acquiring parameter data (D _Par. ) of the precursor of the electrochemical cell ( 1 ) for determining at least one subsequent treatment of the precursor of the electrochemical cell ( 1 ), - a fifth feeding device ( 20 ) configured to supply the precursor of the electrochemical cell ( 1 ) to the measuring device ( 22 ), - a control unit ( 22 ), to which the acquired parameter data (D _Par. ) of the precursor of the electrochemical cell ( 1 ) and which is configured to assign the precursor of the electrochemical cell ( 1 ) to the parameter data (D _Par. ), preferably a storage of the parameter data (D _Par. ) to the precursor of the electrochemical cell ( 1 ), the control unit ( 22 ) is further configured to determine whether, for the electrochemical cell precursor assigned to the parameter data ( 1 ) (A predetermined relationship of the parameter data (D _Par.) With respect to predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W, W _Part.5) is present _Par.4, and Performing a first predetermined treatment of the precursor of the electrochemical cell ( 1 To instruct) when a presence of the predetermined relationship of the parameter data (D _Par.) (With respect to the predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _{Part. 5} ), and preferably carrying out a second predetermined treatment of the precursor of the electrochemical cell ( 1 To instruct) when a non-existence of the predetermined relationship of the parameter data (D _Par.) (With respect to the predetermined parameter values W _Par., W _par.1, W _par.2, W _Par.3, W _Par.4, W _Part.5 ) has been determined. System for producing electrochemical cells ( 1 ) according to claim 17, characterized in that the measuring device ( 21 ) is designed to detect at least one of the following parameters: - change in the internal resistance of the precursor of the electrochemical cell ( 1 ) after application of a pressure, in particular a change in the internal resistance after application of a pressure to side surfaces of the preferably flat configured precursor of the electrochemical cell ( 1 ), - internal resistance of the precursor of the electrochemical cell ( 1 ), - Hardness of the precursor of the electrochemical cell ( 1 ), - internal pressure of the precursor of the electrochemical cell ( 1 ), - withstand voltage of the precursor of the electrochemical cell ( 1 ), - capacity of the precursor of the electrochemical cell ( 1 ) or Internal structures of the precursor of the electrochemical cell ( 1 ). System for producing electrochemical cells ( 1 ) according to claim 17 or 18, characterized by at least one of the following devices: - an aging device ( 15 ) designed for aging, in particular for tempering the precursor of the electrochemical cell ( 1 ) and - a third feeding device ( 14 ) configured to supply the precursor of the electrochemical cell ( 1 ) to the aging device ( 15 ). A battery comprising a number of electrochemical cells produced according to any one of the manufacturing methods of any one of claims 1 to 16 and / or a system for producing electrochemical cells according to any one of claims 17 to 19.

Images