A new battery management system for li-ion battery packs

Author

Chen, Chen ; Jin, Jin ; HE, Lenian

Author_Institution

Inst. of VLSI Design, Zhejiang Univ., Hangzhou

fYear

2008

fDate

Nov. 30 2008-Dec. 3 2008

Firstpage

1312

Lastpage

1315

Abstract

This paper proposes a new battery management system (BMS) for Li-ion battery packs of multi cells in series. The proposed BMS employs a master-slave control mode. The whole system is composed of a master processor and a string of slave manager cells (SMCs). Each battery cell corresponds to an SMC. Differing from the conventional BMS, the proposed one has a novel method for data acquisition and communication. An SMC communicates with adjacent counterparts to transfer the battery information as well as the commands from the master processor. The nethermost SMC communicates with the master processor directly. This method allows the battery management chips to be implemented in a standard CMOS process. A testing chip was fabricated in the CSMC 0.5mum 5V N-well CMOS process. The testing results verified the proposed method for data communication and the whole system functioned well.

Keywords

CMOS integrated circuits; battery management systems; data communication; secondary cells; CSMC process; Li-ion battery packs; N-well CMOS process; battery management system; data acquisition; data communication; master-slave control mode; size 0.5 mum; slave manager cells; voltage 5 V; Battery management systems; CMOS process; Clocks; Communication system control; Data acquisition; Data communication; Master-slave; Sliding mode control; System testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on

Conference_Location

Macao

Print_ISBN

978-1-4244-2341-5

Electronic_ISBN

978-1-4244-2342-2

Type

conf

DOI

10.1109/APCCAS.2008.4746269

Filename

4746269