公开(公告)号：US11165106B2

公开(公告)日：2021-11-02

申请号：US16718235

申请日：2019-12-18

Applicant: Storedot Ltd.

Inventor： Ron Paz ,  Yaniv Damtov ,  Leonid Krasovitsky ,  Ohad Goldbart ,  Simon Litsyn ,  Daniel Aronov

IPC: H01M10/48 ,  H01M50/116 ,  H01M10/0525 ,  H01M10/42 ,  H01M50/131

Abstract: Lithium ion batteries and cells, as well as operating and testing methods are provided, which utilize a transparent pouch to monitor the battery in operational condition and/or in operation. Transparent parts of the pouch may be used for direct sensing of cell elements. Removable covers may be used to protect battery components from illumination damage. Indicators in the transparent pouch may be associated with cell components such as electrodes and electrolyte to indicate their condition. External sensors may be used to derive data from the indicators, and bi-directional electromagnetic (e.g., optical) communication may be established through the transparent pouch, to enhance monitoring and spare physical electrical connections. For example, the transparent pouch may be used to monitor and enhance battery safety and/or to modify operational parameters non-destructively, during operation of the battery.

公开(公告)号：US20210336292A1

公开(公告)日：2021-10-28

申请号：US17302262

申请日：2021-04-28

Applicant: STOREDOT LTD.

Inventor： Daniel ARONOV ,  Assaf Zehavi ,  Eran Sella

IPC: H01M10/0562 ,  H01M10/39 ,  H01M10/38

Abstract: A multi-electrolyte battery, that may include an anode, a cathode, a solid electrolyte positioned between the anode and the cathode, current carriers that comprises an anode current carrier and a cathode current carrier; and at least one other electrolyte. The anode current carrier and the cathode current carrier comprise two external portions that extends outside the anode. The solid electrolyte is sealingly coupled to the two external portions of at least one of the current carriers to define at least one sealed electrolyte, the at least one sealed electrolyte belongs to the at least one other electrolyte.

公开(公告)号：US11088402B2

公开(公告)日：2021-08-10

申请号：US16714902

申请日：2019-12-16

Applicant: Storedot Ltd.

Inventor： Leonid Krasovitsky ,  Vladimir Seleznyov ,  Daniel Aronov ,  Assaf Grunwald

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/0525

Abstract: Methods, systems and battery modules are provided, which increase the cycling lifetime of fast charging lithium ion batteries. During the formation process, the charging currents are adjusted to optimize the cell formation, possibly according to the characteristics of the formation process itself, and discharge extents are partial and optimized as well, as is the overall structure of the formation process. During operation, voltage ranges are initially set to be narrow, and are broadened upon battery deterioration to maximize the overall lifetime. Current adjustments are applied in operation as well, with respect to the deteriorating capacity of the battery. Various formation and operation strategies are disclosed, as basis for specific optimizations.

公开(公告)号：US20210218005A1

公开(公告)日：2021-07-15

申请号：US16737978

申请日：2020-01-09

Applicant: Storedot Ltd.

Inventor： Eynat MATZNER ,  Daniel ARONOV

IPC: H01M2/16 ,  H01M10/0525 ,  H01M4/04

Abstract: Lithium ion batteries, cell stacks, separators and methods of producing thereof are provided. Separators comprise lithium coating on at least a part of a separator sheet, possibly with a protective layer made of a soluble polymer that covers the lithium coating from one or both sides of the separator sheet. Cell stacks are assembled with disclosed separators, in ways that may physically attach the lithium coating to the electrodes (anode(s) and/or cathode(s)) to prelithiate or lithiate them, respectively; and/or electrochemical processes may be used to deliver lithium from the coating to the respective electrodes. Disclosed methods increase the energy capacity and the stability of the formed lithium ion batteries, yielding energy-dense, long-living and fast charging batteries.

公开(公告)号：US20210210747A1

公开(公告)日：2021-07-08

申请号：US16732587

申请日：2020-01-02

Applicant: Storedot Ltd.

Inventor： Eran Sella ,  Eynat Matzner ,  Maxim Kagan ,  Yaron Ideses ,  Moria Koren

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/62

Abstract: Methods of preparing Si-based anode slurries and anode made thereof are provided. Methods comprise coating silicon particles within a size range of 300-700 nm by silver and/or tin particles within a size range of 20-500 nm, mixing the coated silicon particles with conductive additives and binders in a solvent to form anode slurry, and preparing an anode from the anode slurry. Alternatively or complementarily, silicon particles may be milled in an organic solvent, and, in the same organic solvent, coating agent(s), conductive additive(s) and binder(s) may be added to the milled silicon particles—to form the Si-based anode slurry. Alternatively or complementarily, milled silicon particles may be mixed, in a first organic solvent, with coating agent(s), conductive additive(s) and binder(s)—to form the Si-based anode slurry. Disclosed methods simplify the anode production process and provide equivalent or superior anodes.

公开(公告)号：US10923712B2

公开(公告)日：2021-02-16

申请号：US16236544

申请日：2018-12-30

Applicant: StoreDot Ltd.

Inventor： Doron Burshtain ,  Nir Kedem ,  Daniel Aronov

IPC: H01M4/16 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/1395 ,  H01M4/04 ,  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.

公开(公告)号：US10833521B2

公开(公告)日：2020-11-10

申请号：US16180066

申请日：2018-11-05

Applicant: StoreDot Ltd.

Inventor： Leonid Krasovitsky ,  Vladimir Seleznyov ,  Daniel Aronov

IPC: H02J7/00 ,  H01M10/0525 ,  G01R31/382 ,  H01M4/04 ,  G01R31/385

Abstract: Methods, systems and battery modules are provided, which increase the cycling lifetime of fast charging lithium ion batteries. During the formation process, the charging currents are adjusted to optimize the cell formation, possibly according to the characteristics of the formation process itself, and discharge extents are partial and optimized as well, as is the overall structure of the formation process. During operation, voltage ranges are initially set to be narrow, and are broadened upon battery deterioration to maximize the overall lifetime. Current adjustments are applied in operation as well, with respect to the deteriorating capacity of the battery. Various formation and operation strategies are disclosed, as basis for specific optimizations.

公开(公告)号：US20200335980A1

公开(公告)日：2020-10-22

申请号：US16389951

申请日：2019-04-21

Applicant: StoreDot Ltd.

Inventor： Daniel Aronov ,  Avraham Edelshtein ,  Ohad Goldbart ,  Simon Litsyn ,  Nicky Zintchenko Nachshony

IPC: H02J7/00 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/48

Abstract: Systems and methods are provided for operating lithium ion devices by setting an operative capacity below a rated capacity value of the lithium ion device, and operating the lithium ion device at the set operative capacity by decreasing a lower voltage cutoff value during discharging and/or by increasing an upper voltage cutoff level during charging—to support operation at the set operative capacity. The systems and methods may utilize residual lithium in device components such as anodes, cathodes, electrolyte etc. or combinations thereof, and/or external lithiation to increase the cycling lifetime of the lithium ion devices, to adapt to user preferences and expected use profiles, and to simplify device status indications to the user. Advantageously, relatively simple circuitry is required to implement the provided methods and systems, and achieve customizable operation of the lithium ion devices.

公开(公告)号：US20200152960A1

公开(公告)日：2020-05-14

申请号：US16689261

申请日：2019-11-20

Applicant: StoreDot Ltd.

Inventor： Assaf GRUNWALD ,  Leonid KRASOVITSKY ,  Dmitry VOYEVODIN

IPC: H01M4/04 ,  H01M10/0525 ,  H01M4/38 ,  H01M10/44 ,  H01M10/48

Abstract: Methods and systems are provided for estimating and extending the expected cell cycling lifetime for produced lithium ion cells. Methods comprise monitoring charging and/or discharging peak(s) during formation cycles of the cells, which are defined with respect to dQ/dV measurements during the formation cycles, and ending the formation process once the charging and/or discharging peaks disappear, optionally deriving the expected cell cycling lifetime by comparing the monitored peaks to specified thresholds that are correlated to the lifetime. The methods may be implemented by controller(s) at the battery, device and/or factory levels, which may be operated in combination. Formation processes and/or cell operation schemes may be adjusted accordingly, to avoid excessive dQ/dV rates and increase thereby the cell cycling lifetime.

公开(公告)号：US10593946B2

公开(公告)日：2020-03-17

申请号：US15836993

申请日：2017-12-11

Applicant: STOREDOT LTD.

Inventor： Carmit Ophir ,  Libi Brakha

IPC: H01M4/58 ,  C08G61/12 ,  H01M10/44 ,  H01M4/04 ,  H01M4/60 ,  H01M4/136 ,  H01M4/583 ,  H01M4/13 ,  H01M4/36 ,  H01M4/46 ,  H01M10/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: Cathodes for a fast charging lithium ion battery, processes for manufacturing thereof and corresponding batteries are provided. Cathode formulations comprise spinel and/or layered structure cathode material with 5-10% of cathode material having an olivine-based structure as polymerization initiator, binder material, and monomer and/or oligomer material selected to polymerize into a conductive polymer upon partial delithiation of the olivine-based structure cathode material during at least a first charging cycle of a cell having a cathode made of the cathode formulation. When the cathode is used in a battery, polymerization is induced in-situ (in-cell) during first charging cycle(s) of the battery to provide a polymer matrix which is evenly dispersed throughout the cathode.