Jeffrey A Armstrong

US Patent:

20190363313, Nov 28, 2019

Filed:

May 20, 2019

Appl. No.:

16/417473

Inventors:

- Sylmar CA, US
Christopher Hallmark - Pickens SC, US
Michael Erickson - Redford MI, US
Kurt Erickson - Anderson SC, US
Nicholas Hamor - Easley SC, US
Jeffrey Armstrong - Pickens SC, US
Philip Edward Poole - Greenville SC, US
Nathan Messerich - Easley SC, US

International Classification:

H01M 2/02
B23K 1/00
B23K 26/38

Abstract:

A method of forming a brazed joint is described. The method includes pressing a non-molybdenum component, such as a cross pin of a battery case assembly, against a molybdenum component, such as a terminal pin of the battery case assembly, and applying one or more electrical pulses to form an interface liquid layer between the components that cools to form the brazed joint. At least one of the electrical pulses has a constant voltage over a pulse time. A contact resistance between the components can decrease during the pulse time, and thus, the constant voltage can cause an uncontrolled electrical current of the electrical pulse to increase. The increasing electrical current heats the components sufficiently to form the interface liquid layer having a predetermined thickness that provides a required bend strength. Removal of surface oxides provide consistent mechanical strength for this joint. Other embodiments are also described and claimed.

US Patent:

20190131592, May 2, 2019

Filed:

Dec 26, 2018

Appl. No.:

16/232169

Inventors:

- Sunnyvale CA, US
Jeffrey Armstrong - Pickens SC, US
Joseph Beauvais - Liberty SC, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

H01M 2/02
H01M 4/133
H01M 4/131
H01M 2/06

Abstract:

A battery includes a case having a feedthrough port, a feedthrough assembly disposed in the feedthrough port, and a cell stack disposed within the case. The feedthrough port includes an inner conductor and an insulator core separating the inner conductor from the case. The cell stack includes an anode, a cathode, and a separator insulating the anode from the cathode, wherein the anode and cathode are offset from one another. An insulating boot surrounding the cell stack insulates the cell stack from the case. The insulating boot has an opening configured to receive therein the feedthrough assembly, which may include overmolded insulation. The interior surfaces and interior walls of the battery case may be thermal spray-coated with a dielectric material to prevent lithium dendrite formation between cathode and anode surfaces.

US Patent:

20190131593, May 2, 2019

Filed:

Dec 27, 2018

Appl. No.:

16/233275

Inventors:

- Sunnyvale CA, US
Christopher Hallmark - Pickens SC, US
John Duggan - Greenville SC, US
Jeffrey Armstrong - Pickens SC, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

H01M 2/02
H01M 4/133
H01M 4/131
H01M 2/06

Abstract:

A battery includes a case having a feedthrough port, a feedthrough assembly disposed in the feedthrough port, and a cell stack disposed within the case. The feedthrough port includes an inner conductor and an insulator core separating the inner conductor from the case. The cell stack includes an anode, a cathode, and a separator insulating the anode from the cathode, wherein the anode and cathode are offset from one another. An insulating boot surrounding the cell stack insulates the cell stack from the case. The insulating boot has an opening configured to receive therein the feedthrough assembly, which may include overmolded insulation. The interior surfaces and interior walls of the battery case may be thermal spray-coated with a dielectric material to prevent lithium dendrite formation between cathode and anode surfaces.

US Patent:

20180138463, May 17, 2018

Filed:

Nov 16, 2017

Appl. No.:

15/815217

Inventors:

- Sunnyvale CA, US
Joseph Beauvais - Liberty SC, US
Jeffrey Armstrong - Greenville SC, US
Christopher Hallmark - Pickens SC, US
John Duggan - Greenville SC, US

Assignee:

Pacesetter, Inc. - Sunnyvale CA

International Classification:

H01M 2/02
H01M 4/131
H01M 4/133

Abstract:

A battery includes a case having a feedthrough port, a feedthrough assembly disposed in the feedthrough port, and a cell stack disposed within the case. The feedthrough port includes an inner conductor and an insulator core separating the inner conductor from the case. The cell stack includes an anode, a cathode, and a separator insulating the anode from the cathode, wherein the anode and cathode are offset from one another. An insulating boot surrounding the cell stack insulates the cell stack from the case. The insulating boot has an opening configured to receive therein the feedthrough assembly, which may include overmolded insulation. The interior surfaces and interior walls of the battery case may be thermal spray-coated with a dielectric material to prevent lithium dendrite formation between cathode and anode surfaces.