US 12,431,728 B2
Systems and methods for electrochemical device charging and discharging
Daniel A. Konopka, Denver, CO (US); John Richard Howlett, III, Centennial, CO (US); and Jeffrey J. Holt, Superior, CO (US)
Assigned to Iontra Inc, Centennial, CO (US)
Filed by Iontra Inc, Centennial, CO (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,851.
Application 17/390,851 is a continuation in part of application No. 17/232,975, filed on Apr. 16, 2021.
Claims priority of provisional application 63/059,044, filed on Jul. 30, 2020.
Claims priority of provisional application 63/011,832, filed on Apr. 17, 2020.
Prior Publication US 2022/0029443 A1, Jan. 27, 2022
Int. Cl. H02J 7/00 (2006.01); G01R 31/382 (2019.01)
CPC H02J 7/00712 (2020.01) [G01R 31/382 (2019.01); H02J 7/0047 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A charging system comprising:
a charge signal shaping circuit comprising a first switch configured to receive a pulse width modulated (PWM) control signal and operably coupled with an inductor to provide a sequence of pulses to the inductor, the sequence of pulses responsive to the PWM signal;
a controller in operable communication with the charge signal shaping circuit to control the PWM control signal, the controller configured to generate a charge current waveform with a shaped leading edge defining an increasing charge current followed by a constant current body portion by controlling a duty cycle of the sequence of pulses to the inductor, the controlled sequence of pulses producing the shaped leading edge of the charge current waveform from the inductor, and then providing a constant duty cycle of the sequence of pulses to provide the constant current body portion of the charge current waveform from the inductor.