EP3533103A1 - Verfahren zum herstellen einer lithium-ionen-zelle und einer lithium-ionen-batterie, lithium-ionen-batterie - Google Patents
Verfahren zum herstellen einer lithium-ionen-zelle und einer lithium-ionen-batterie, lithium-ionen-batterieInfo
- Publication number
- EP3533103A1 EP3533103A1 EP17788230.5A EP17788230A EP3533103A1 EP 3533103 A1 EP3533103 A1 EP 3533103A1 EP 17788230 A EP17788230 A EP 17788230A EP 3533103 A1 EP3533103 A1 EP 3533103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lithium
- voltage
- ion
- cell
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the invention relates to a method for producing a rechargeable lithium-ion cell for a lithium-ion battery, in which initially a cell with at least one cathode, an anode, a separator and an electrolyte is provided. Subsequently, the cell is formed by at least one charging and / or discharging process, for which at least one forming voltage, a charging current, a discharge current and / or a charging temperature are specified.
- the invention relates to a method for producing a lithium-ion battery, in which a plurality of lithium-ion cells are prepared, which were prepared as described above.
- the invention relates to a lithium-ion battery with correspondingly prepared lithium-ion cells.
- Components of a lithium-ion cell such as the anode, the cathode, the electrolyte and the separator, is followed by the so-called forming process, in which the lithium-ion cell is converted from its inactive ground state into an operable state.
- the forming process is intended to form and stabilize a defined boundary layer between the anode and the electrolyte.
- This boundary layer is a corrosion layer that has positive properties in controlled growth with regard to the further behavior of the lithium-ion cell and the performance of the lithium-ion cell. The given during formation settings with respect to the forming voltage, the
- Charge current, the discharge current, a cell and / or ambient temperature, are therefore important for the formation of an advantageous, efficient and high-life lithium-ion cell or battery.
- the aim of formation is to increase an initial capacity of the lithium-ion cell, to minimize a drop in capacitance over time and to improve the cycle stability, ie the long-term behavior of the lithium-ion battery as a result of a large number of charging and discharging processes.
- the publication WO 2016/045887 A1 discloses, for example, a method in which at least one first charging process up to the maximum operating voltage with the decomposition of lithium peroxide is carried out to produce a lithium-ion cell.
- the invention has for its object to provide an improved process for the production of lithium-ion cells or lithium-ion batteries, by which in particular the cycle stability is improved.
- the at least one forming voltage is kept temporarily constant or nearly constant. Depending on voltage value and
- Charge value is identified as an optimal time at which maintaining the formation voltage constant causes the cycle stability increases in the later use of the lithium-ion cell.
- the detection or determination of voltage value and charge value can be done by standard means, so that thereby no
- Pausing the charging or discharging corresponds to a current voltage value, leads to a defined formation of a boundary layer between the anode and electrolyte, and this in turn leads to an improved performance potential of the lithium-ion cell leads, in particular with respect to the cycle stability.
- the detected inflection points and / or maxima and / or minima represent the time at which the at least one forming voltage is kept constant during the formation process. This makes use of the fact that at the time at which a chemical reaction takes place in the cell, this is maximally exploited by keeping the voltage constant.
- the determination of the inflection points, maxima and / or minima preferably takes place on a reference lithium-ion cell, so that during the formation process these data need not be determined again.
- the duration of 10 hours, in particular more than 10 hours is specified.
- a sufficiently long forming voltage is provided at a constant value, by which the chemical reaction is supported and the cycle stability of the lithium-ion cell is improved.
- This forming process advantageously produces a powerful and multiple times rechargeable and dischargeable lithium-ion cell.
- it is preferably provided that for forming the cell is discharged with a constant discharge current of C / 10 up to the at least one forming voltage and discharged after the predetermined period of time to the discharge end voltage. This also ensures that the lithium-ion cells advantageously have a high efficiency and a good continuous capacity.
- the formation voltage is kept constant according to the invention for the predeterminable period of time in order to increase the cycle stability of the cell.
- the forming process is repeated several times, in particular at least three times or exactly three times. By carrying out the forming process several times, the efficiency of the lithium-ion cell is increased and the
- the inventive method for producing a rechargeable lithium-ion battery having the features of claim 9 is characterized in that the lithium-ion cell of the lithium-ion battery are produced by the inventive method. This results in the already mentioned advantages.
- the lithium-ion battery according to the invention with the features of claim 10 is characterized by lithium-ion cells, which were produced by the method according to the invention. This also results in the already mentioned advantages.
- FIG. 1 shows a flow chart for explaining an advantageous method for producing a lithium-ion battery
- FIG. 2 shows a method for determining an advantageous forming voltage
- FIG. 3 shows a diagram for illustrating an improved cycle stability of a lithium-ion cell produced by the process.
- FIG. 1 shows a simplified representation of a flowchart for explaining an advantageous method for producing a lithium-ion battery.
- a lithium-ion cell which comprises an anode, a cathode, a separator and an electrolyte.
- the anode of the lithium-ion cell made of graphite and the cathode of LiNi 0 , 6Mno , 2Coo , 20 2 manufactured.
- the lithium-ion battery is expediently made of a plurality of lithium-ion cells produced in this way, which are electrically connected to one another. After assembly of the components, the respective lithium-ion cell is in an inactive state.
- a forming process then ensues in step S2, which is described below:
- the lithium-ion cell is monitored for current electrical voltage values and charges during a charging and discharging process. For this purpose, in a step S3 before the execution of the forming process or as a first step of
- FIG. 2 shows a diagram of a dQ / dV measurement (differential capacitance measurement) of a lithium-ion cell, wherein a first curve K1 shows a first formation cycle, ie a first charge and discharge process, and a second curve K2 shows a second one and third forming cycle.
- a first curve K1 shows a first formation cycle, ie a first charge and discharge process
- a second curve K2 shows a second one and third forming cycle.
- step S2 the lithium-ion cell for the first time with a
- the charging voltage or forming voltage is kept constant for a predefinable period of time, in the present case 10 hours, in order to utilize the chemical reactions taking place in the lithium-ion cell as advantageously as possible. Subsequently the lithium-ion cells in a step S4 to a predetermined
- Discharge voltage of 3.0V Discharge voltage of 3.0V.
- step S5 in the discharge process, first a discharge with the discharge current takes place up to a further one
- Breakpoint resulting from the differential capacitance measurement is kept constant over a predeterminable period of time, in particular 10 hours, and only then, in a step S6, is the lithium-ion cell discharged to the discharge end voltage.
- Cycle stability of the lithium-ion cell is significantly improved. It is already advantageous if, during the charging process, the forming voltage at least once
- the forming voltage is kept constant for a maximum of 10 hours both when a maximum is reached in the charging process and when a minimum in the discharging process is reached.
- FIG. 3 shows in a further diagram, over the charging cycles Z carried out, the residual capacity SoH of an exemplary lithium-ion cell produced by the method described above.
- the cyclizations were performed at an ambient temperature of 45 ° C and a discharge current and charge current of 1 C / 1 C to simulate rapid aging of the lithium-ion cell.
- the curve K3_1 shows the remaining capacity for the lithium-ion cell, which was prepared according to the method described above with a constant holding the forming voltage during the charging process.
- a curve K3_2 shows the residual capacity for a lithium-ion cell produced by a conventional method. It can be seen that the residual capacity of the advantageously produced lithium-ion cell exceeds that of the standard produced lithium-ion cell.
- the residual capacity may be different at different forming voltages, which are kept constant.
- a further curve K3_3 is shown, which shows the residual capacity of a lithium-ion cell, which was produced by the method of Figure 1, wherein not the forming voltage during the charging process, but was kept constant during the discharge process for 10 hours.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016220998.1A DE102016220998A1 (de) | 2016-10-25 | 2016-10-25 | Verfahren zum Herstellen einer Lithium-Ionen-Zelle und einer Lithium-Ionen-Batterie, Lithium-Ionen-Batterie |
PCT/EP2017/077210 WO2018077908A1 (de) | 2016-10-25 | 2017-10-24 | Verfahren zum herstellen einer lithium-ionen-zelle und einer lithium-ionen-batterie, lithium-ionen-batterie |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3533103A1 true EP3533103A1 (de) | 2019-09-04 |
Family
ID=60164716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17788230.5A Pending EP3533103A1 (de) | 2016-10-25 | 2017-10-24 | Verfahren zum herstellen einer lithium-ionen-zelle und einer lithium-ionen-batterie, lithium-ionen-batterie |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3533103A1 (de) |
DE (1) | DE102016220998A1 (de) |
WO (1) | WO2018077908A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113245229A (zh) * | 2021-04-14 | 2021-08-13 | 合肥国轩高科动力能源有限公司 | 一种筛选锂离子异常电池的方法 |
CN115149075A (zh) * | 2022-08-12 | 2022-10-04 | 湖北亿纬动力有限公司 | 无隔板的电池组装箱方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8980453B2 (en) | 2008-04-30 | 2015-03-17 | Medtronic, Inc. | Formation process for lithium-ion batteries |
JP2012227035A (ja) * | 2011-04-21 | 2012-11-15 | Toyota Motor Corp | 非水電解液型二次電池の製造方法 |
US9159990B2 (en) * | 2011-08-19 | 2015-10-13 | Envia Systems, Inc. | High capacity lithium ion battery formation protocol and corresponding batteries |
JP5662968B2 (ja) * | 2012-06-19 | 2015-02-04 | 株式会社日立製作所 | 二次電池の検査システム、充放電機、及び検査方法 |
US20150004474A1 (en) * | 2013-07-01 | 2015-01-01 | Samsung Sdl Co., Ltd. | Secondary battery |
JP6135929B2 (ja) * | 2013-11-11 | 2017-05-31 | トヨタ自動車株式会社 | 非水系二次電池の製造方法 |
DE102014219421A1 (de) | 2014-09-25 | 2016-03-31 | Bayerische Motoren Werke Aktiengesellschaft | Kathode (positive Elektrode) und diese umfassende Lithiumionenbatterie im Zustand vor dem ersten Ladevorgang, Verfahren zur Formation einer Lithiumionenbatterie und Lithiumionenbatterie nach Formation |
JP6299623B2 (ja) * | 2015-02-10 | 2018-03-28 | トヨタ自動車株式会社 | リチウムイオン電池の初期充電方法 |
-
2016
- 2016-10-25 DE DE102016220998.1A patent/DE102016220998A1/de active Pending
-
2017
- 2017-10-24 EP EP17788230.5A patent/EP3533103A1/de active Pending
- 2017-10-24 WO PCT/EP2017/077210 patent/WO2018077908A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102016220998A1 (de) | 2018-04-26 |
WO2018077908A1 (de) | 2018-05-03 |
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