Switching-based charger with continuously built-in resistor detector (CBIRD) and analog multiplication-division unit (AMDU) for fast charging in Li-Ion battery

Proposed continuously built-in resistor detector (CBIRD) monitors the built-in resistance (BIR) of the Li-Ion batteries for achieving fast charging process. Owing to the detection of the battery built-in resistance in real-time, the transition from the constant-current (CC) mode to the constant-volt...

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Bibliographic Details
Main Authors: Ruei-Hong Peng, Tsu-Wei Tsai, Ke-Horng Chen, Zhih Han Tai, Yi Hsuan Cheng, Chi Chung Tsai, Hsin-Yu Luo, Shih-Ming Wang, Long-Der Chen, Cheng-Chen Yang, Jui-Lung Chen
Format: Conference Proceeding
Language:English
Subjects:
Adders
analog multiplication-division unit (AMDU)
Batteries
built-in resistor (BIR)
Capacitors
constant-current mode (CC)
constant-voltage (CV) mode
continuously built-in resistor detector (CBIRD)
Detectors
Resistors
Switches
Switching circuits
Switching-based charger
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Description
Summary:Proposed continuously built-in resistor detector (CBIRD) monitors the built-in resistance (BIR) of the Li-Ion batteries for achieving fast charging process. Owing to the detection of the battery built-in resistance in real-time, the transition from the constant-current (CC) mode to the constant-voltage (CV) mode can be postponed to have large energy storing in the battery, Thus, the charging time of the switching-based charger can be effectively reduced. The CBIRD is composed of four analog circuits, which are the differentiator, the subtraction sample-and-hole (S/H), analog multiplication-division unit (AMDU), and voltage adder for accurate BIR detection. Thus, the proposed switching-based charger with the CBIRD has 45% charging time improvement for Li-ion batteries.
ISSN:1930-8833
2643-1319
DOI:10.1109/ESSCIRC.2013.6649096