Qian Lin

US Patent:

8134275, Mar 13, 2012

Filed:

Nov 21, 2008

Appl. No.:

12/275974

Inventors:

Alexander Kavetsky - Champaign IL, US
Galena Yakubova - Champaign IL, US
Shahid Yousaf - Charleston IL, US
Gabriel Walter - Urbana IL, US
Doris Chan - Champaign IL, US
Maxim Sychov - St. Petersburg, RU
Qian Lin - Charleston IL, US
Ken Bower - Charleston IL, US

Assignee:

Trace Photonics, Inc. - Charleston IL

International Classification:

G21H 1/00

US Classification:

310303, 136253, 3613011, 438 19, 427 77, 322 2 R

Abstract:

The present invention is directed to an encapsulated β particle emitter that comprises a sol-gel derived core that comprises a β-emitting radioisotope and an encapsulant enclosing the core through which at least some of the β emissions from the β-emitting radioisotope pass, wherein the encapsulant comprises a substrate and a cover and at least a portion of the encapsulant is electrically conductive, and a method for making the same. Additionally, the present invention is directed to a capacitor comprising such an encapsulated β particle emitter and a method of performing work with such a capacitor.

US Patent:

20190152001, May 23, 2019

Filed:

Jan 18, 2019

Appl. No.:

16/251755

Inventors:

- Detroit MI, US
Qian Lin - Troy MI, US
John M. Moote - Plymouth MI, US
Anthony Ottomano - Warren MI, US
Teresa J. Rinker - Royal Oak MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B23K 31/12
G01R 31/36
G01N 25/72
G01N 27/416

Abstract:

A method and a test fixture for evaluating a battery cell are described, wherein the battery cell is composed of a cell body having a plurality of electrode foils that are joined to both a positive terminal and a negative terminal at weld junctions. The method includes retaining the cell body of the battery cell in a first clamping device and gripping one of the positive and negative terminals in a terminal gripper. A dynamic stress end effector coupled to the terminal gripper is employed to apply a vibrational excitation load to the one of the positive and negative terminals. Impedance between the positive terminal and the negative terminal is monitored via a controller, and integrity of the weld junction of the one of the positive and negative terminals is evaluated based upon the impedance.

US Patent:

20170348804, Dec 7, 2017

Filed:

Jun 6, 2016

Appl. No.:

15/174288

Inventors:

- Detroit MI, US
Qian Lin - Troy MI, US
John M. Moote - Plymouth MI, US
Anthony Ottomano - Warren MI, US
Teresa J. Rinker - Royal Oak MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B23K 31/12
G01N 27/416
G01N 25/72

Abstract:

A method and a test fixture for evaluating a battery cell are described, wherein the battery cell is composed of a cell body having a plurality of electrode foils that are joined to both a positive terminal and a negative terminal at weld junctions. The method includes retaining the cell body of the battery cell in a first clamping device and gripping one of the positive and negative terminals in a terminal gripper. A dynamic stress end effector coupled to the terminal gripper is employed to apply a vibrational excitation load to the one of the positive and negative terminals. Impedance between the positive terminal and the negative terminal is monitored via a controller, and integrity of the weld junction of the one of the positive and negative terminals is evaluated based upon the impedance.

US Patent:

20170315100, Nov 2, 2017

Filed:

Apr 29, 2016

Appl. No.:

15/142408

Inventors:

- Detroit MI, US
Qian Lin - Troy MI, US
John M. Moote - Plymouth MI, US
Anthony Ottomano - Warren MI, US
Teresa J. Rinker - Royal Oak MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

G01N 29/44
G01N 3/08
G01N 29/34
G01N 29/04
G01R 31/36

Abstract:

A method and a test fixture for evaluating a battery cell composed of a cell body having a plurality of electrode foils, a positive terminal and a negative terminal, wherein the positive terminal and the negative terminal are each joined to the cell body at weld junctions. This includes retaining the cell body of the battery cell in a first clamping device. The terminal is grasped in a terminal gripper. A dynamic stress end effector coupled to the terminal gripper applies a vibrational excitation load to the terminal. A static stress end effector applies a static load to the terminal. Integrity of the weld junction is evaluated based upon the applied static load.

US Patent:

20160351865, Dec 1, 2016

Filed:

May 27, 2015

Appl. No.:

14/722893

Inventors:

- Detroit MI, US
Qian Lin - Troy MI, US
Yan Wu - Troy MI, US

International Classification:

H01M 2/06
H01M 2/02

Abstract:

Methods and battery cells formed thereby are provided that minimize issues with an exposed metallic layer at the peripheral edge of a flexible laminate forming a battery cell pouch. Sealing the periphery of the pouch is optimized projecting terminals of the electrochemical cell through perforations in the flexible laminate at a folded edge thereof. The folded edge does not present an exposed metallic layer and does not require a sealing material or use of sealing operation complicated by the terminals.

US Patent:

20160072109, Mar 10, 2016

Filed:

Nov 13, 2015

Appl. No.:

14/940187

Inventors:

- Detroit MI, US
John Moote - Plymouth MI, US
Qian Lin - Troy MI, US
Stephen J. Harris - Walnut Creek CA, US

International Classification:

H01M 2/10
H01M 10/058
H01M 10/625
H01M 10/613
H01M 10/0525

Abstract:

A battery module is provided. The battery module includes a plurality of battery cell assemblies configured to electrically communicate with each other. Each battery cell assembly has an electrode stack enclosed by a case. The electrode stack is positioned in the case to form one or more peripheral spaces between the electrode stack and the case. Support members are positioned adjacent to each of the battery cell assemblies to contact a desired portion of the electrode stack. The support members are configured to focus a compressive force on a desired portion of the electrode stack. The compressive force urges gases formed during operation of the electrode stack into the peripheral spaces within the case.

US Patent:

20140272514, Sep 18, 2014

Filed:

Mar 14, 2013

Appl. No.:

13/826506

Inventors:

- Detroit MI, US
John Moote - Plymouth MI, US
Qian Lin - Troy MI, US
Stephen J. Harris - Bloomfield MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

H01M 10/52
H01M 10/04

US Classification:

429120, 429158, 296231

Abstract:

A battery module is provided. The battery module includes a plurality of battery cell assemblies configured to electrically communicate with each other. Each battery cell assembly has an electrode stack enclosed by a case. The electrode stack is positioned in the case to form one or more peripheral spaces between the electrode stack and the case. Support members are positioned adjacent to each of the battery cell assemblies to contact a desired portion of the electrode stack. The support members are configured to focus a compressive force on a desired portion of the electrode stack. The compressive force urges gases formed during operation of the electrode stack into the peripheral spaces within the case.