Gm Global Technolgoy Operations, Inc.

William Reginald Collin

Thomas J Chapaton

Ratandeep S Kukreja

Nicholas Paul William Pieczonka

Ryan Curtis Sekol

Robert H Dietze

Michelle H Wiebenga

Christopher Brady

Houssen Yang

A method for testing a battery component for leakage includes generating a sample from a battery component storing electrolyte using a Fourier Transform infrared (FT-IR) spectrometer, comparing absorbance levels of the sample at N predetermined frequencies to N predetermined thresholds, respectively, where N is an integer greater than one; and selectively detecting at least one of an electrolyte leak and generating an electrolyte concentration estimate in response to the comparison. The battery component is selected from a group consisting of a battery cell, a battery module, and a battery pack.

System for detecting electrolyte leaks during battery manufacturing

A vehicle coolant system includes a pipe configured to facilitate a flow of vehicle coolant through the pipe, a light source configured to transmit at least one wavelength of light through the vehicle coolant, and a signal detector configured to receive at least one wavelength of light transmitted through the vehicle coolant, and to generate a signal intensity value corresponding to a measured intensity of the at least one wavelength of light received at the signal detector. A controller is configured to receive the signal intensity value from the signal detector, identify a coolant contamination threshold value corresponding to the vehicle coolant, compare the signal intensity value received from the signal detector to the coolant contamination threshold value, and initiate a vehicle coolant remedial action according to a result of comparing the signal intensity value received from the signal detector to the coolant contamination threshold value.

Vehicle coolant systems

A method for detecting a contaminant in a vehicle coolant system during service includes contacting a chromophore impregnated strip and a heat transfer fluid sample, where the chromophore impregnated strip includes a complexing agent selected to form a complex with the contaminant that causes a color change in the chromophore impregnated strip and thereby indicates the presence of the contaminant in the heat transfer fluid sample.

Methods for detecting contaminations in vehicle coolant systems

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Dearborn, MI, United States of America

William Reginald Collin