公开(公告)号：US20130119923A1

公开(公告)日：2013-05-16

申请号：US13675924

申请日：2012-11-13

Applicant: Maxwell Technologies, Inc.

Inventor： Carl David Wright ,  Robert Shaw Lynds ,  John Michael Miller

IPC: H02J7/00

CPC classification number: H02J7/007 ,  H02J7/0073 ,  H02J7/0091 ,  H02J7/345

Abstract: This disclosure provides systems, methods and apparatus for managing a capacitor system. In one aspect, an energy storage system includes a capacitor system, a charging circuit, and a controller. The capacitor system includes one or more capacitors. The charging circuit is configured to charge the capacitor system to a first target voltage. The controller is configured to detect a first condition and is programmed, in response to the first condition, to instruct the charging circuit to charge the capacitor system to a second target voltage that is less than the first target voltage. The controller is programmed to provide a notification that the capacitor system is operating in a degraded state.

Abstract translation: 本公开提供了用于管理电容器系统的系统，方法和装置。 一方面，能量存储系统包括电容器系统，充电电路和控制器。 电容器系统包括一个或多个电容器。 充电电路被配置为将电容器系统充电到第一目标电压。 控制器被配置为检测第一条件，并且响应于第一条件被编程，以指示充电电路将电容器系统充电到小于第一目标电压的第二目标电压。 控制器被编程为提供电容器系统在恶化状态下操作的通知。

公开(公告)号：US20220238858A1

公开(公告)日：2022-07-28

申请号：US17717510

申请日：2022-04-11

Applicant: Maxwell Technologies, Inc.

Inventor： Hieu Minh Duong ,  Yudi Yudi ,  Ziying Wang ,  Joon Ho Shin

IPC: H01M4/139 ,  H01M4/04 ,  H01M4/38 ,  H01M10/0525 ,  H01G11/26 ,  H01G11/52 ,  H01G11/86 ,  H01M4/13

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.

公开(公告)号：US20220006071A1

公开(公告)日：2022-01-06

申请号：US17291491

申请日：2019-11-07

Applicant: Maxwell Technologies, Inc.

Inventor： Matt Petrowsky ,  Joon Ho Shin ,  Hieu Minh Duong ,  Vicente Tapia

IPC: H01M4/139 ,  H01M10/0565 ,  H01M4/04 ,  H01M4/36 ,  H01M4/62 ,  H01M10/04 ,  H01M10/0525

Abstract: An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode. At least one of the electrodes can include an electrode film prepared by a dry process. The electrode film, the electrode and/or the separator can comprise a salt, improved porosity, increased density, be prelithiated, and/or a foam. Process and apparatuses used for fabricating the electrode and/or electrode film are also described.

公开(公告)号：US11121352B2

公开(公告)日：2021-09-14

申请号：US16175344

申请日：2018-10-30

Applicant: Maxwell Technologies, Inc.

Inventor： Porter Mitchell

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/587 ,  H01M4/38 ,  H01G11/46 ,  H01G11/86 ,  H01G11/36 ,  H01G11/50 ,  H01G11/44 ,  H01M4/485 ,  H01M4/139 ,  H01M4/583 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/1391

Abstract: Apparatuses and methods for forming an electrode film mixture are described. An apparatus for forming an electrode film mixture can have a first source including a solution comprising a polymer, for example, polytetrafluoroethylene and a critical or supercritical fluid, for example, supercritical carbon dioxide, a second source including a second component of the electrode film mixture, a mixer configured to receive the solution and the second component and to form a slurry comprising the solution and the second component. The apparatus can include a decompressor configured to receive the slurry and decompress the slurry to vaporize the critical or supercritical fluid and precipitate dry polymer.

公开(公告)号：US11107640B2

公开(公告)日：2021-08-31

申请号：US16370296

申请日：2019-03-29

Applicant: Maxwell Technologies, Inc.

Inventor： Santhanam Raman ,  Xiaomei Xi ,  Xiang-Rong Ye ,  Jian Hong

IPC: H01G11/50 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/64 ,  H01G11/84 ,  H01G11/06

Abstract: An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, and an electrolyte where the electrolyte includes one or more additives and/or solvent components selected from vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC). The electrolyte may include a carbonate based solvent and one or more solvent components and/or one or more of vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC).

公开(公告)号：US10923295B2

公开(公告)日：2021-02-16

申请号：US15443939

申请日：2017-02-27

Applicant: Maxwell Technologies, Inc.

Inventor： Santhanam Raman ,  James Borkenhagen ,  Xiaomei Xi ,  Xiang-Rong Ye

IPC: H01G11/42 ,  H01G11/50 ,  H01G11/52 ,  H01G11/86 ,  H01M4/62 ,  H01M4/587 ,  H01M10/0525 ,  H01G11/38 ,  H01G11/28 ,  H01G11/06 ,  H01M4/04 ,  H01M4/133

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.

公开(公告)号：US10741843B2

公开(公告)日：2020-08-11

申请号：US14690153

申请日：2015-04-17

Applicant: MAXWELL TECHNOLOGIES, INC.

Inventor： Hieu Minh Duong ,  Haim Feigenbaum ,  Jian Hong

IPC: H01M4/62 ,  H01G9/042 ,  H01G9/15 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/587

Abstract: An energy storage device can include a cathode and an anode, where at least one of the cathode and the anode are made of a polytetrafluoroethylene (PTFE) composite binder material including PTFE and at least one of polyvinylidene fluoride (PVDF), a PVDF co-polymer, and poly(ethylene oxide) (PEO). The energy storage device can be a lithium ion battery, a lithium ion capacitor, and/or any other lithium based energy storage device. The PTFE composite binder material can have a ratio of about 1:1 of PTFE to a non-PTFE component, such a PVDF, PVDF co-polymer and/or PEO.

公开(公告)号：US10574076B2

公开(公告)日：2020-02-25

申请号：US15384972

申请日：2016-12-20

Applicant: Maxwell Technologies, Inc.

Inventor： Ilya Kaminsky

IPC: H02J7/00 ,  G01R31/3835

Abstract: In one aspect, an embodiment of this invention comprises an energy storage device balancing apparatus. The energy storage device balancing apparatus comprises a balancing circuit and an alarm circuit. Both the balancing circuit and the alarm circuit are coupled to the energy storage device. The balancing circuit is configured to monitor a voltage of the energy storage cell and dissipate energy from the energy storage cell if the voltage is at or above a first reference voltage. The alarm circuit is configured to generate an alarm when the voltage of the energy storage cell is at or above a second reference voltage and dissipate energy from the energy storage cell when the voltage is at or above the second reference voltage.

公开(公告)号：US20200028133A1

公开(公告)日：2020-01-23

申请号：US16498328

申请日：2018-03-29

Applicant: Maxwell Technologies, Inc.

Inventor： Kevin T. Stone ,  Laurent Gisler ,  Ishmael D. Rahimian

IPC: H01M2/10 ,  H01G11/10 ,  H01G11/84 ,  H01R25/16 ,  H01M2/20

Abstract: In one aspect, an embodiment of this invention comprises an energy-storage module for storing energy for electrical consumption. The module comprises a plurality of energy-storage cells and a set of parallel walls configured to mount the plurality of energy-storage cells between the parallel walls and having a plurality of through-holes. The module also comprises a bus bar arrangement configured to electrically couple each of the plurality of energy-storage cells to a first terminal and a second terminal and a wire routing device configured to mate with a plurality of the through-holes and configured to receive one or more wires that electrically connect components of the energy storage module.

公开(公告)号：US20190305316A1

公开(公告)日：2019-10-03

申请号：US16366220

申请日：2019-03-27

Applicant: Maxwell Technologies, Inc.

Inventor： Ziying Wang ,  Hieu Minh Duong ,  Yudi Yudi ,  Joon Ho Shin ,  Prince Magsino

IPC: H01M4/62 ,  H01M10/0525

Abstract: Provided herein are dry process electrode films, and energy storage devices incorporating the same, including a microparticulate non-fibrillizable binder having certain particle sizes. The electrode films exhibit improved mechanical and processing characteristics. Also provided are methods for processing such microparticulate non-fibrillizable electrode film binders, and for incorporating the microparticulate non-fibrillizable binders in electrode films.