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Methods and devices for electrochemical system analysis

Patent ·
OSTI ID:1490054

The present disclosure provides a calorimeter device and an electrochemical system analysis method. The device includes a first thermo-electric gauge (TEG) and a first conductor thermally coupled to the first TEG, the first conductor comprising a first surface. The device may also include a second conductor with a second surface, the second surface facing the first surface, thereby forming a gap. The device may also include a second TEG thermally coupled to the second conductor and an adjustment mechanism attached to the second TEG, operable to modify a size of the gap between the first surface and the second surface. The method includes applying a plurality of electrical signals across an electrochemical system, determining, using a calorimeter, at least one rate at which heat is generated by the system, and determining at least one thermal characteristic of a component of the system.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-08GO28308
Assignee:
Alliance for Sustainable Energy, LLC (Golden, CO)
Patent Number(s):
10,107,696
Application Number:
14/855,538
OSTI ID:
1490054
Country of Publication:
United States
Language:
English

References (7)

Theoretical and experimental analysis of heat generations of a pouch type LiMn2O4/carbon high power Li-polymer battery journal November 2013
Cell Impedance Measurement by Laplace Transformation of Charge or Discharge Current–Voltage journal January 2006
Calorimetric measurement of the heat generated by a Double-Layer Capacitor cell under cycling journal October 2010
Method of evaluating relative safety of porous electrode/electrolyte combinations to spot heating journal April 1995
Thermal Impedance Spectroscopy - A method for the thermal characterization of high power battery cells journal February 2013
Investigation of the thermal properties of a Li-ion pouch-cell by electrothermal impedance spectroscopy journal October 2011
Thermal characterization of a high-power lithium-ion battery: Potentiometric and calorimetric measurement of entropy changes journal November 2013

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