Study On The Fast Charge System Of Series Lead-acid Batteries

The fast charge technology of batteries for electronic vehicles is very important in the field of electronic vehicle, and also one of the core technique problems that need to be solved in the development electronic vehicles of at home now. At present, the storage cells used by the electronic vehicles of our country mostly are Lead-acid batteries, so this paper chooses the fast charge system of series Lead-acid batteries for electronic vehicles with the development perspective as the direction for studying, and studies some key and difficulty technique problems in the development of the system.This paper is based on the fast charge technology of batteries for electronic vehicles, and some parts of the key fund project of Science & Technology department of Chongqing< Study on the intelligent fast charge technique of power batteries for electronic vehicles >. The paper consists of six parts:①In the paper, research status and products of series Lead-acid Batteries'Fast Charge are briefly introduced, and also the aim of this paper, the content of this paper.②The principle and the characteristics of Lead-acid battery are introduced detailedly. Then the basic rule~J.A.Mass rule for the charge of Lead-acid battery and the fast charge index are introduced detailedly. At last, the polarization and balanced charge during the fast charge process are analyzed.③The Lead-acid Batteries'fast and balanced charge methods are introduced detailedly, then the changeable pulse with"no loss"current distributary balanced circuit's fast charge method of Lead-acid batteries are put forward, after that the Lead-acid Batteries'fast and balanced charge circuits are designed, emulational research are done based on PSPICE and PSIM.④The contactless power supply technology used by Lead-acid Batteries'Fast Charge System is also researched and many excellences of it are found. So the contactless power supply technology is imported to solve supplying flexibly, after that the whole system is designed.⑤The simple system is made and the method is proved to satisfy the Lead-acid Batteries'fast and balanced charge (in the fast charge process, the polarization is restrained obviously, gas extracting and temperature rising are not serious. For the same spec batteries, the charge time shortens obviously, about 1/8~1/10 of the regular charge time). Then the conclusion comes out and is analyzed, which settles foundation for the future's research of Lead-acid Batteries'fast charge.⑥Finally, the main research contents of total paper are summarized, main research conclusions are given, and the insufficiency of this paper and research emphases in the future are pointed out.