John Lawrence Christensen

US Patent:

7481185, Jan 27, 2009

Filed:

Aug 14, 2007

Appl. No.:

11/893298

Inventors:

Sungbae Park - Cupertino CA, US
Jasim Ahmed - Mountain View CA, US
Han Ho Song - Stanford CA, US
Aleksandar Kojic - Sunnyvale CA, US
Jean-Pierre Hathout - Stuttgart, DE
Martin Rauscher - Ludwigsburg, DE
John F. Christensen - Mountain View CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

F02B 69/06
F02B 1/12

US Classification:

123 21, 123 27 R

Abstract:

In a multi-mode, 2-stroke/4-stroke internal combustion engine operation, by switching the engine stroke from 4-stroke operation to 2-stroke operation so that the combustion frequency is doubled, doubling of the engine power is achieved even at the same work output per cycle. In order to meet the demand of extremely high power, the engine operates in 4-stroke boosted SI operation transitioned from 2-stroke HCCI operation at pre-set level of power and crank speed requirements. By combining the multi-stroke (2-stroke HCCI and 4-stroke HCCI) and multi-mode operation (2-stroke HCCI and 4-stroke boosted SI operation), full load range and overall high efficiency with minimal NOx emission are achieved.

US Patent:

7726975, Jun 1, 2010

Filed:

Jun 28, 2006

Appl. No.:

11/477404

Inventors:

John F. Christensen - Mountain View CA, US
Jasim Ahmed - Menlo Park CA, US
Sungbae Park - Cupertino CA, US
Aleksandar Kojic - Sunnyvale CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 2/00
H01M 10/44

US Classification:

439 61, 429 63, 429 64, 429 7, 429 9, 429 50

Abstract:

A lithium-ion battery cell includes at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell, an auxiliary electrode including a lithium reservoir, and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.

US Patent:

7846571, Dec 7, 2010

Filed:

Jun 25, 2007

Appl. No.:

11/767817

Inventors:

John F. Christensen - Mountain View CA, US
Jasim Ahmed - Mountain View CA, US
Sungbae Park - Cupertino CA, US
Aleksandar Kojic - Sunnyvale CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 10/44
H01M 10/42
H01M 6/18

US Classification:

429 61, 429 7, 429 9, 429 50, 429142, 429304, 429322

Abstract:

A lithium-ion battery cell includes at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell, an auxiliary electrode including a lithium reservoir, and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.

US Patent:

8188715, May 29, 2012

Filed:

May 15, 2009

Appl. No.:

12/466707

Inventors:

John F. Christensen - Mountain View CA, US
Jasim Ahmed - Mountain View CA, US
Mario Roessler - Stuttgart, DE

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H02J 7/00

US Classification:

320118, 429 50, 429 60

Abstract:

A method of determining extent and type of capacity fade of an electrochemical cell in one embodiment includes identifying a first volume fraction of an active material in an electrode, identifying a first capacity of the first electrode at another time, identifying a second volume fraction of the first active material based upon the first capacity, identifying a first amount of the first active material lost from the first time to the second time based upon the first volume fraction and the second volume fraction, identifying a third volume fraction of an active material in another electrode, identifying a second capacity of the second electrode at a later time, identifying a fourth volume fraction of the second active material based upon the second capacity, and identifying a second amount of the second active material lost based upon the third volume fraction and the fourth volume fraction.

US Patent:

8313864, Nov 20, 2012

Filed:

May 8, 2009

Appl. No.:

12/437592

Inventors:

John F. Christensen - Mountain View CA, US
Boris Kozinsky - Newton MA, US
Jasim Ahmed - Mountain View CA, US
Nalin Chaturvedi - Sunnyvale CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 4/58

US Classification:

42923195

Abstract:

An electrochemical cell with a blended cathode in one embodiment includes a negative electrode including a form of lithium, a positive electrode spaced apart from the negative electrode, a separator positioned between the negative electrode and the positive electrode, a first active material in the positive electrode including a form of lithium, and a second active material in the positive electrode including a form of sulfur.

US Patent:

8329327, Dec 11, 2012

Filed:

May 8, 2009

Appl. No.:

12/437606

Inventors:

John F. Christensen - Mountain View CA, US
Boris Kozinsky - Newton MA, US
Jasim Ahmed - Mountain View CA, US
Nalin Chaturvedi - Sunnyvale CA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H01M 2/12
H01M 10/52

US Classification:

429 66

Abstract:

An electrochemical cell in one embodiment includes a first electrode, a second electrode spaced apart from the first electrode, a separator positioned between the first electrode and the second electrode, an active material within the second electrode, and a variable volume reservoir in fluid connection with the active material, such that changes in the volume of the active material cause changes in volume of the variable volume reservoir.

US Patent:

8354824, Jan 15, 2013

Filed:

May 8, 2009

Appl. No.:

12/463092

Inventors:

Nalin Chaturvedi - Sunnyvale CA, US
John F. Christensen - Mountain View CA, US
Jasim Ahmed - Mountain View CA, US
Boris Kozinsky - Newton MA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H02J 7/00

US Classification:

320118, 320116, 320119, 320122, 320132

Abstract:

An electrochemical battery system in one embodiment includes a plurality of first electrochemical cells, a memory in which command instructions are stored, and a processor configured to execute the command instructions to (i) evaluate each of the plurality of first electrochemical cells, and (ii) selectively connect a first of the plurality of first electrochemical cells to a power provider based upon the evaluation while selectively isolating a second of the plurality of first electrochemical cells from the power provider based upon the evaluation.

US Patent:

8405351, Mar 26, 2013

Filed:

May 8, 2009

Appl. No.:

12/463024

Inventors:

Nalin Chaturvedi - Sunnyvale CA, US
John F. Christensen - Mountain View CA, US
Jasim Ahmed - Mountain View CA, US
Boris Kozinsky - Newton MA, US

Assignee:

Robert Bosch GmbH - Stuttgart

International Classification:

H02J 7/00

US Classification:

320122, 320118, 320119, 320121, 320132, 320137

Abstract:

An electrochemical battery system in one embodiment includes a first electrochemical cell, a second electrochemical cell, a memory in which command instructions are stored, and a processor configured to execute the command instructions to (i) selectively charge or discharge the first electrochemical cell based upon an evaluation of first criteria associated with the first electrochemical cell, and (ii) selectively charge or discharge the second electrochemical cell based upon an evaluation of second criteria associated with the first electrochemical cell.