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

Author

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

Author_Institution

Inst. of Electr. Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2013

fDate

16-20 Sept. 2013

Firstpage

157

Lastpage

160

Abstract

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.

Keywords

analogue circuits; battery chargers; current-mode circuits; resistors; sample and hold circuits; secondary cells; switching circuits; Li; Li-ion battery; analog circuits; analog multiplication-division unit; charging time; constant-current mode; constant-voltage mode; continuously built-in resistor detector; differentiator; energy storing; fast charging; subtraction sample-and-hole; switching-based charger; voltage adder; Adders; Batteries; Capacitors; Detectors; Resistors; Switches; Switching circuits; Switching-based charger; analog multiplication-division unit (AMDU); built-in resistor (BIR); constant-current mode (CC); constant-voltage (CV) mode; continuously built-in resistor detector (CBIRD);

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2013 Proceedings of the

Conference_Location

Bucharest

ISSN

1930-8833

Print_ISBN

978-1-4799-0643-7

Type

conf

DOI

10.1109/ESSCIRC.2013.6649096

Filename

6649096