公开(公告)号：US10054501B2

公开(公告)日：2018-08-21

申请号：US15071734

申请日：2016-03-16

Applicant: NISSAN NORTH AMERICA, INC.

Inventor： Ying Liu ,  Kenzo Oshihara

IPC: G01L1/00 ,  G01L1/16 ,  G01R31/01 ,  H01M10/42

CPC classification number: G01L1/16 ,  G01R31/016 ,  G01R31/043 ,  H01M10/0525 ,  H01M10/4285

Abstract: A stress detector for detecting an in-situ stress profile of an electrode has a liquid cell, a holder configured to attach to one end of a sample electrode so that the sample electrode is cantilevered in the liquid cell, a piezo sensor comprising a piezo material in the liquid cell and having a movable end configured to contact the sample electrode and a fixed end fixedly engaged within the liquid cell and a measurement sensor in contact with the piezo sensor.

公开(公告)号：US20170268940A1

公开(公告)日：2017-09-21

申请号：US15071734

申请日：2016-03-16

Applicant: NISSAN NORTH AMERICA, INC.

Inventor： Ying Liu ,  Kenzo Oshihara

IPC: G01L1/16

CPC classification number: G01L1/16 ,  G01R31/016 ,  H01M10/0525 ,  H01M10/4285

Abstract: A stress detector for detecting an in-situ stress profile of an electrode has a liquid cell, a holder configured to attach to one end of a sample electrode so that the sample electrode is cantilevered in the liquid cell, a piezo sensor comprising a piezo material in the liquid cell and having a movable end configured to contact the sample electrode and a fixed end fixedly engaged within the liquid cell and a measurement sensor in contact with the piezo sensor.

公开(公告)号：US20170271654A1

公开(公告)日：2017-09-21

申请号：US15071888

申请日：2016-03-16

Applicant: NISSAN NORTH AMERICA, INC.

Inventor： Ying Liu ,  Kenzo Oshihara

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/628 ,  H01M10/0525 ,  H01M2220/20 ,  Y02E60/122

Abstract: A lithium ion battery has an anode comprising a current collector, a separator and an active material layer having active material particles. Each active material particle comprises a core of an alloying material including silicon and a polymer coating on the core, the polymer coating comprising a heat-shrinking polymer that shrinks as temperature increases. As cycling increases across a life of the lithium ion battery, an expansion amount of the alloying material of the core increases, temperature of the anode increases, and an amount of shrinkage of the polymer coating increases, such that as the core attempts to expand against the polymer coating, the polymer coating exerts an opposite force on the core.

公开(公告)号：US09379417B2

公开(公告)日：2016-06-28

申请号：US14171971

申请日：2014-02-04

Applicant: Nissan North America, Inc.

Inventor： Nagappan Ramaswamy ,  Peter Aurora ,  Gregory DiLeo ,  Xiaoguang Hao ,  Taehee Han ,  Rameshwar Yadav ,  Ellazar Niangar ,  Kenzo Oshihara

IPC: H01M10/44 ,  H01M10/42 ,  H02J7/00 ,  H01M10/052

CPC classification number: H01M10/44 ,  H01M10/052 ,  H01M10/42 ,  H01M10/4242 ,  H02J7/00 ,  H02J7/0063 ,  H02J2007/0067

Abstract: Methods and apparatus are provided for discharging a Li—S battery having at least one battery unit comprising a lithium-containing anode and a sulfur-containing cathode with an electrolyte layer there between. One method comprises electrochemically surface treating the sulfur-containing cathode during discharge of the battery. A method of electrochemically surface treating a cathode of a lithium-sulfide battery comprises applying at least one oxidative voltage pulse during a pulse application period while the lithium-sulfur battery discharges and controlling pulse characteristics during the pulse application period, the pulse characteristics configured to affect a morphology of lithium sulfide forming on the sulfur-containing cathode during discharge.

Abstract translation: 提供了用于将具有至少一个包含含锂阳极和含硫阴极的电池单元的Li-S电池放电在其间具有电解质层的方法和装置。 一种方法包括在电池放电期间电化学表面处理含硫阴极。 电化学表面处理硫化锂电池的阴极的方法包括在脉冲施加期间施加至少一个氧化电压脉冲，同时在脉冲施加期间锂硫电池放电并控制脉冲特性，脉冲特性被配置为影响 在放电期间在含硫阴极上形成硫化锂的形态。

公开(公告)号：US20150221990A1

公开(公告)日：2015-08-06

申请号：US14171933

申请日：2014-02-04

Applicant: Nissan North America, Inc.

Inventor： Nagappan Ramaswamy ,  Peter Aurora ,  Gregory DiLeo ,  Xiaoguang Hao ,  Taehee Han ,  Rameshwar Yadav ,  Ellazar Niangar ,  Kenzo Oshihara

IPC: H01M10/44

CPC classification number: H02J7/007 ,  C25F1/00 ,  H01M10/052 ,  H01M10/42 ,  H01M10/4242 ,  H01M10/425 ,  H01M10/44 ,  H01M10/446 ,  H01M10/46 ,  H01M2220/20 ,  H02J7/00 ,  H02J7/0052 ,  H02J7/0075 ,  H02J7/0093

Abstract: Provided are methods and apparatus for charging a lithium sulfur (Li—S) battery. The Li—S battery has at least one unit cell comprising a lithium-containing anode and a sulfur-containing cathode with an electrolyte layer there between. One method provides controlled application of voltage pulses at the beginning of the charging process. An application period is initiated after a discharge cycle of the Li—S battery is complete. During the application period, voltage pulses are provided to the Li—S battery. The voltage pulses are less than a constant current charging voltage. Constant current charging is initiated after the application period has elapsed.

Abstract translation: 提供锂硫（Li-S）电池的充电方法和装置。 Li-S电池具有包含含锂阳极和含硫阴极的至少一个单元电池，其间具有电解质层。 一种方法在充电过程开始时提供电压脉冲的受控应用。 在Li-S电池的放电循环完成后开始施加期间。 在施加期间，向Li-S电池提供电压脉冲。 电压脉冲小于恒定电流充电电压。 在施加期间过后，启动恒定电流充电。