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    Mono-cell batteries
    82.
    发明授权
    Mono-cell batteries 有权

    公开(公告)号：US10862104B2

    公开(公告)日：2020-12-08

    申请号：US16258733

    申请日：2019-01-28

    Applicant: StoreDot Ltd.

    Inventor： Daniel Aronov

    IPC: H01M4/134 ,  H01M4/1395 ,  H01M10/0525 ,  H01M4/02 ,  H01M4/38

    Abstract: Electrodes, production methods and mono-cell batteries are provided, which comprise active material particles embedded in electrically conductive metallic porous structure, dry-etched anode structures and battery structures with thick anodes and cathodes that have spatially uniform resistance. The metallic porous structure provides electric conductivity, a large volume that supports good ionic conductivity, that in turn reduces directional elongation of the particles during operation, and may enable reduction or removal of binders, conductive additives and/or current collectors to yield electrodes with higher structural stability, lower resistance, possibly higher energy density and longer cycling lifetime. Dry etching treatments may be used to reduce oxidized surfaces of the active material particles, thereby simplifying production methods and enhancing porosity and ionic conductivity of the electrodes. Electrodes may be made thick and used to form mono-cell batteries which are simple to produce and yield high performance.

    Direct charging of battery cell stacks
    83.
    发明授权
    Direct charging of battery cell stacks 有权

    公开(公告)号：US10608463B1

    公开(公告)日：2020-03-31

    申请号：US16254648

    申请日：2019-01-23

    Applicant: StoreDot Ltd.

    Inventor： Daniel Aronov ,  Avraham Edelshtein ,  Maxim Liberman

    IPC: H02J7/04 ,  H02J7/00 ,  G01R31/3842 ,  H01M10/44 ,  H01M10/42 ,  G01R31/392

    Abstract: Charging methods and systems are provided which charge multiple cells directly from an AC source, by adjusting, momentarily, the number of charged cells to the momentary voltage level provided by the AC source. Cells are rapidly switched in and out to correspond to the provided voltage level, and the charging level of each cell is regulated by the switching order of the cells—determined according to cell characteristics such as state of charge and state of health. Advantageously, charging losses are reduced significantly in the disclosed systems and methods, and an additional level of cell control is provided. The charged assembly of cells may be arranged and re-arranged in various configurations to optimize the charging scheme, e.g., to equalize the charging states of the cells to simplify the use and improve the efficiency of the cell stack.

    ANODE ACTIVE MATERIAL WITH A BUFFERING ZONE
    84.
    发明申请
    ANODE ACTIVE MATERIAL WITH A BUFFERING ZONE 审中-公开

    公开(公告)号：US20190393562A1

    公开(公告)日：2019-12-26

    申请号：US16533907

    申请日：2019-08-07

    Applicant: STOREDOT LTD.

    Inventor： Doron BURSHTAIN ,  Nir Kedem ,  Eran Sella ,  Daniel Aronov

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  C09D179/02 ,  C09D5/24

    Abstract: Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.

    Introducing a mobile layer of ionic liquid into electrolytes of lithium ion batteries
    86.
    发明授权
    Introducing a mobile layer of ionic liquid into electrolytes of lithium ion batteries 有权

    公开(公告)号：US10424814B2

    公开(公告)日：2019-09-24

    申请号：US16013969

    申请日：2018-06-21

    Applicant: StoreDot Ltd.

    Inventor： Doron Burshtain ,  Nir Kedem ,  Daniel Aronov

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M4/60

    Abstract: Electrolytes, anodes, lithium ion cells and methods are provided for preventing lithium metallization in lithium ion batteries to enhance their safety. Electrolytes comprise up to 20% ionic liquid additives which form a mobile solid electrolyte interface during charging of the cell and prevent lithium metallization and electrolyte decomposition on the anode while maintaining the lithium ion mobility at a level which enables fast charging of the batteries. Anodes are typically metalloid-based, for example include silicon, germanium, tin and/or aluminum. A surface layer on the anode bonds, at least some of the ionic liquid additive to form an immobilized layer that provides further protection at the interface between the anode and the electrolyte, prevents metallization of lithium on the former and decomposition of the latter.

    Lithium borates and phosphates coatings
    89.
    发明授权
    Lithium borates and phosphates coatings 有权

    公开(公告)号：US10355271B2

    公开(公告)日：2019-07-16

    申请号：US15480922

    申请日：2017-04-06

    Applicant: STOREDOT LTD.

    Inventor： Doron Burshtain ,  Nir Kedem ,  Daniel Aronov

    IPC: H01M4/134 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/1395 ,  H01M4/62 ,  H01M4/02

    Abstract: Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.

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