锂电池保护电路的设计.pdf

2006 10 205 300381 Design of a Lithium-ion Battery Protection Circuit Deng Shaogang, Wang Yan, Li Xiuqing, Huang Hebao (Tianjin Institute of Power Sources, Tianjin 300381, China) Abstract This paper deals mainly with the hardware and software design of the protective circuit for lithium-ion batteries (7 in series),whose control center is PIC16C74. By making full use of the powerful judgment and logic calculation of PIC16C74 as well as the flexible software, this paper tests the working condition of the lithium battery and realizes the protection performance of overcharge, overdischarge and over current. Keywords Lithium-ion battery; micro controller unit; A/D conversion 1 2 14 3 4 5 710 [1] 6 3.6V 4.2V 4.1V 2.25 2.7V [2] 2006-06-19