Christina D Johnston

US Patent:

20140017578, Jan 16, 2014

Filed:

Jul 11, 2013

Appl. No.:

13/939303

Inventors:

- Stuttgart, DE
John F. Christensen - Mountain View CA, US
Timm Lohmann - Mountain View CA, US
Roel Sanchez-Carrera - Somerville MA, US
Boris Kozinsky - Waban MA, US
Christina Johnston - Palo Alto CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 4/86

US Classification:

429405, 429535

Abstract:

A battery system in one embodiment includes a negative electrode, a separator layer adjacent to the negative electrode, and a positive electrode adjacent to the separator layer, the positive electrode including a gas phase and an electrically conductive framework defining at least one wetting channel, the wetting channel configured to distribute an electrolyte within the electrically conductive framework.

US Patent:

20140030612, Jan 30, 2014

Filed:

Jul 30, 2013

Appl. No.:

13/953908

Inventors:

- Stuttgart, DE
John F. Christensen - Mountain View CA, US
Timm Lohmann - Mountain View CA, US
Roel Sanchez-Carrera - Somerville MA, US
Boris Kozinsky - Waban MA, US
Christina Johnston - Palo Alto CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 12/08
H01M 8/00

US Classification:

429405, 429535

Abstract:

In one embodiment, an electrochemical cell includes a negative electrode, a porous separator adjacent to the negative electrode, and a positive electrode separated from the negative electrode by the porous separator, the positive electrode including a conductive matrix and a plurality of insulator particles extending from the conductive matrix.

US Patent:

20140044999, Feb 13, 2014

Filed:

Jul 31, 2013

Appl. No.:

13/955918

Inventors:

- Stuttgart, DE
John F. Christensen - Mountain View CA, US
Timm Lohmann - Mountain View CA, US
Nalin Chaturvedi - Sunnyvale CA, US
Christina Johnston - Palo Alto CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 2/40
H01M 12/08

US Classification:

429 51, 429 70

Abstract:

In one embodiment, a battery system includes a negative electrode, a separator adjacent to the negative electrode, a positive electrode separated from the negative electrode by the separator, the positive electrode including an electrode inlet and an electrode outlet, an electrolyte including about 5 molar LiOH located within the positive electrode, and a first pump having a first pump inlet in fluid communication with the electrode outlet and a first pump outlet in fluid communication with the electrode inlet and controlled such that the first pump receives the electrolyte from the electrode outlet and discharges the electrolyte to the electrode inlet during both charge and discharge of the battery system.

US Patent:

20210399315, Dec 23, 2021

Filed:

Jun 19, 2020

Appl. No.:

16/906583

Inventors:

- Stuttgart, DE
Michael METZGER - Sunnyvale CA, US
Saravanan KUPPAN - Sunnyvale CA, US
Christina JOHNSTON - Mountain View CA, US

International Classification:

H01M 8/0263
B01J 23/42
B01J 35/02
H01M 4/92
H01M 4/88
H01M 4/86

Abstract:

A fuel cell includes a flow field plate having at least one channel and at least one land, where each of the at least one channel is positioned between two adjacent lands. The fuel cell further includes a gas diffusion layer (GDL) positioned between the flow field plate and a catalyst layer, where the catalyst layer has a first region aligned with the at least one channel and a second region aligned with the at least one land. The first region may have a first catalyst material supported by a first catalyst support region, and the second region may have a second catalyst material supported by a second catalyst support region.

US Patent:

20210351426, Nov 11, 2021

Filed:

May 6, 2020

Appl. No.:

16/867848

Inventors:

- Stuttgart, DE
Christina M. Johnston - Mountain View CA, US
Yelena Gorlin - Menlo Park CA, US
Sondra L. Hellstrom - Palo Alto CA, US
Michael Metzger - Sunnyvale CA, US

International Classification:

H01M 8/1051
H01M 8/1067
H01M 8/1023
H01M 8/1039
H01M 8/103

Abstract:

Described herein is a polymer-electrolyte-membrane fuel cell (PEMFC) that incorporates a shunt into the membrane separator that becomes electronically conductive around a well-defined anodic onset potential, thereby preventing excessive anodic potentials at the positive electrode that would otherwise drive deleterious parasitic reactions such as catalyst dissolution or catalyst and carbon oxidation.

US Patent:

20200197953, Jun 25, 2020

Filed:

Dec 21, 2018

Appl. No.:

16/229164

Inventors:

- Stuttgart, DE
Saravanan KUPPAN - Sunnyvale CA, US
Sondra HELLSTROM - East Palo Alto CA, US
Nathan CRAIG - Sunnyvale CA, US
Christina JOHNSTON - Sunnyvale CA, US
Jake CHRISTENSEN - Elk Grove CA, US

International Classification:

B03C 3/47
B03C 3/88
B03C 3/38
B03C 3/53

Abstract:

A method of forming a collection electrode for an electrostatic charging air cleaning device. The method includes forming a slurry including a carbon black powder material, a polymeric binder material and a liquid solvent material. The method further includes applying the slurry to a substrate material. The method also includes curing the slurry to obtain a coating layer on the substrate material to form the collection electrode.

US Patent:

20200200408, Jun 25, 2020

Filed:

Dec 21, 2018

Appl. No.:

16/229078

Inventors:

- Stuttgart, DE
Saravanan KUPPAN - Sunnyvale CA, US
Sondra HELLSTROM - East Palo Alto CA, US
Nathan CRAIG - Santa Clara CA, US
Christina JOHNSTON - Sunnyvale CA, US
Jake CHRISTENSEN - Elk Grove CA, US

International Classification:

F24F 3/16
B01D 53/32
F24F 13/28

Abstract:

An electrostatic charging air cleaning device having first and second pre-chargers. The first pre-charger is configured to generate a first corona discharge to electrostatically charge PM in the incoming air stream with a first charge to form a first exiting air stream exiting the first pre-charger. The second pre-charger is configured to generate a second corona discharge to electrostatically charge PM in the incoming air stream with a second charge to form a second exiting air stream exiting the second pre-charger. The device also includes a separator having apertures such that PM in the second exiting air stream passes through the separator to agglomerate with PM in the first exiting air stream to form agglomerated particles. The apertures are sized such that the agglomerated particles are larger than the apertures to preclude the agglomerated particles from reentering the second exiting air stream.

US Patent:

20170222447, Aug 3, 2017

Filed:

Jan 29, 2016

Appl. No.:

15/010873

Inventors:

- Stuttgart, DE
Reinhardt Klein - Mountain View CA, US
Ashish Krupadanam - Cupertino CA, US
John F. Christensen - Elk Grove CA, US
Aleksandar Kojic - Sunnyale CA, US
Sarah Stewart - San Francisco CA, US
Sun Ung Kim - Fremont CA, US
Christina Johnston - Mountain View CA, US

International Classification:

H02J 7/00

Abstract:

A method of managing a battery system, the battery system including at least one battery cell, at least one sensor configured to measure at least one characteristic of the battery cell, and a battery management system including a microprocessor and a memory, the method comprising receiving by the battery management system, from the at least one sensor at least one measured characteristic of the battery cell at a first time and at least one measured characteristic of the battery cell at a second time. The battery management system estimating, at least one state of the battery cell by applying a physics-based battery model, the physics based battery model being based on differential algebraic equations; and regulating by the battery management system, at least one of charging or discharging of the battery cell based on the at least one estimated state.