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公开(公告)号：US20030086238A1
公开(公告)日：2003-05-08
申请号：US10005885
申请日：2001-11-02
Inventor： Priya Bendale , Manuel R. Malay , John M. Dispennette , Chenniah Nanjundiah , Earl Chaney
IPC: H01G009/00
CPC classification number: H01G9/155 , H01G11/32 , Y02E60/13 , Y10T29/417
Abstract: A method of making an electrode structure, the electrode structure and a double layer capacitor including the electrode structure, the method comprising the steps of: forming a plurality of electrodes, each having a current collector plate, a primary coating formed on each side of the collector plate, the primary coating including conducting carbon powder and a binder, and a secondary coating formed on each primary coating, the secondary coating including activated carbon powder, a solvent and a binder; positioning a respective separator between each electrodes while stacking the electrodes such that the respective separator is juxtaposed against respective secondary coatings of adjacent electrodes that electrically insulates the adjacent electrodes, whereby forming an electrode stack; and rolling the electrode stack into a cylindrical electrode structure.
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公开(公告)号：US20220158163A1
公开(公告)日：2022-05-19
申请号：US17589697
申请日：2022-01-31
Applicant: Maxwell Technologies, Inc.
Inventor： Porter Mitchell , Jeffrey Nelson , Robert Crawford , Mohammed-Yazid Saidi
IPC: H01M4/04 , H01M4/485 , H01M4/62 , B01J8/38 , B01J8/18 , B01J2/16 , H01M4/1391 , B01J2/00 , B01J8/44 , B01J8/34 , C25D17/10 , H01M4/60 , H01M4/88
Abstract: An apparatus for forming an electrode film mixture can have a first source including a polymer dispersion comprising a liquid and a polymer, a second source including a second component of the electrode film mixture, and a fluidized bed coating apparatus including a first inlet configured to receive from the first source the dispersion, and a second inlet configured to receive from the second source the second component.
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公开(公告)号：US20210249657A1
公开(公告)日：2021-08-12
申请号：US17048974
申请日：2019-04-30
Applicant: MAXWELL TECHNOLOGIES, INC.
Inventor： Joon Ho SHIN , Haim FEIGENBAUM , Hieu Minh DUONG
Abstract: Dry process electrode films, and energy storage devices incorporating the same are described, including a silicon active material. The films may be free standing anode electrode films. Also provided are methods for fabricating such anode electrode films.
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公开(公告)号：US20210193398A1
公开(公告)日：2021-06-24
申请号：US17173748
申请日：2021-02-11
Applicant: Maxwell Technologies, Inc.
Inventor： Santhanam RAMAN , James BORKENHAGEN , Xiaomei XI , Xiang-Rong YE
IPC: H01G11/42 , H01M4/62 , H01G11/38 , H01G11/28 , H01G11/06 , H01M4/04 , H01M4/133 , H01G11/50 , H01G11/52 , H01G11/86 , H01M4/587 , H01M10/0525
Abstract: An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, where the anode and/or electrode includes an electrode film having a super-fibrillized binder material and carbon. The electrode film can have a reduced quantity of the binder material while maintaining desired mechanical and/or electrical properties. A process for fabricating the electrode film may include a fibrillization process using reduced speed and/or increased process pressure such that fibrillization of the binder material can be increased. The electrode film may include an electrical conductivity promoting additive to facilitate decreased equivalent series resistance performance. Increasing fibrillization of the binder material may facilitate formation of thinner electrode films, such as dry electrode films.
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公开(公告)号：US20210075055A1
公开(公告)日：2021-03-11
申请号：US17099588
申请日：2020-11-16
Applicant: Maxwell Technologies, Inc.
Inventor： Hieu Minh Duong , Porter Mitchell , Mohammed-Yazid Saidi , Joon Ho Shin , Haim Feigenbaum
IPC: H01M10/0525 , H01M4/62 , H01M4/587 , H01M4/1395 , H01M4/1393 , H01M4/38 , H01M4/134 , H01M4/133 , H01M4/04 , H01M4/36
Abstract: An energy storage device can include a first electrode, a second electrode and a separator between the first electrode and the second electrode wherein the first electrode includes an electrochemically active material and a porous carbon material, and the second electrode includes elemental lithium metal and carbon particles. A method for fabricating an energy storage device can include forming a first electrode and a second electrode, and inserting a separator between the first electrode and the second electrode, where forming the first electrode includes combining an electrochemically active material and a porous carbon material, and forming the second electrode includes combining elemental lithium metal and a plurality of carbon particles.
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Patent Agency Ranking
公开(公告)号：US10931123B2
公开(公告)日：2021-02-23
申请号：US15061290
申请日：2016-03-04
Applicant: Maxwell Technologies, Inc.
Inventor： Ilya Kaminsky
Abstract: Disclosed are systems and methods for improved cell-balancing circuits, back-up failure detection circuits and alarm extension for cells and modules of an energy storage system. One aspect of the invention comprises an energy storage device cell balancing apparatus. The apparatus comprises a first and a second dissipative component connected in series. The first dissipative component and the second dissipative component are coupled to an energy storage cell. The second dissipative component monitors a voltage of the energy storage cell and, if the voltage is at or above a reference voltage, the second dissipative component conducts a discharging current through the first and second dissipative components. The first dissipative component maintains a voltage drop across the first dissipative component that is proportional to the voltage of the energy storage cell. The second dissipative component maintains a constant voltage drop across the second dissipative component when conducting the discharging current.
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公开(公告)号：US10818441B2
公开(公告)日：2020-10-27
申请号：US16153484
申请日：2018-10-05
Applicant: Maxwell Technologies, Inc.
Inventor： Porter Mitchell , Thomas J. Dougherty
IPC: H01G11/36 , H01M4/04 , H01M4/133 , H01G11/12 , H01G11/28 , H01G11/86 , H01M4/66 , H01G11/80 , H01G11/68 , H01M10/0585 , H01M12/00
Abstract: An energy storage device can have a first graphite film, a second graphite film and an electrode divider ring between the first graphite film and the second graphite film, forming a sealed enclosure. The energy storage device may be compatible with an aqueous electrolyte or a non-aqueous electrolyte. A method of forming an energy storage device can include providing an electrode divider ring, a first graphite film and a second graphite film. The method can include pressing a first edge of the electrode divider ring into a surface of the first graphite film, and pressing a second opposing edge of the electrode divider ring into a surface of the second graphite film to form a sealed enclosure. The sealed enclosure may have as opposing surfaces the surface of the first graphite film and the surface of the second graphite film.
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公开(公告)号：US20200152968A1
公开(公告)日：2020-05-14
申请号：US16495203
申请日：2018-03-20
Applicant: Maxwell Technologies, Inc.
Inventor： Mohammed-Yazid Saidi
IPC: H01M4/1393 , H01M10/0525 , H01M4/62
Abstract: Passivation methods and compositions for electrode binders are disclosed. A coated binder particle for use in an electrode film of an energy storage device is provided. The coated binder particle can comprise a coating over the surface of a binder particle, wherein the coating provides ionic insulation to the binder particle. In some embodiments, the coating covers the entire surface of the binder particle. In still further embodiments, a coated binder particle in an energy storage device blocks ionic contact between the binder and an electrolyte.
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29.发明申请公开(公告)号：US20200152967A1
公开(公告)日：2020-05-14
申请号：US16675012
申请日：2019-11-05
Applicant: Maxwell Technologies, Inc.
Inventor： Hieu Minh Duong , Yudi Yudi , Ziying Wang , Joon Ho Shin
Abstract: Methods for manufacturing intermittently coated dry electrodes for energy storage devices and energy storage devices including the intermittently coated dry electrodes are disclosed. In one embodiment, the method includes providing a metal layer and providing an electrochemically active free-standing film formed of a dry active material. The method also includes combining the electrochemically active free-standing film and the metal layer to form a combined layer. The method further includes removing a portion of the electrochemically active free-standing film from the combined layer so that the electrochemically active free-standing film is intermittently formed on the metal layer in a longitudinal direction of the metal layer.
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公开(公告)号：US10547045B2
公开(公告)日：2020-01-28
申请号：US14642471
申请日：2015-03-09
Applicant: Maxwell Technologies, Inc.
Inventor： Jian Hong , Xiaomei Xi
Abstract: A method of fibrillizing a fibrillizable binder component of an electrode film can include providing a negatively charged fibrillizable binder component, and applying an electric field upon the negatively charged binder component to fibrillize the negatively charged fibrillizable binder component. A system for fibrillizing a binder component of an electrode film can include a mixing container made of a material having an affinity to donate electron(s) to the binder component, and an actuator configured to apply a force upon the mixing container so as to contact the mixing container with the binder component and to move the mixing container and the binder component relative to each other within a speed and range of motion sufficient to create an electrostatic force on the binder component and fibrillize the binder component.
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