午间涨跌停股分析：52只涨停股、31只跌停股，BC电池概念走强，奥特维、钧达股份涨停

Group 1 - A-shares experienced significant market activity with 52 stocks hitting the daily limit up and 31 stocks hitting the limit down on February 3 [1] - The perovskite battery concept saw notable activity, with ST Jingji and Woge Optoelectronics reaching the limit up [1] - The BC battery concept also strengthened, with Aotwei and Junda shares hitting the limit up [1] Group 2 - ST Jinglan (rights protection) achieved 5 boards in 7 days, while Baichuan shares reached 4 boards in 5 days [1] - Several stocks, including Hengdian Film and Television and Wanfeng shares, recorded 4 consecutive boards [1] - ST Wanfang (rights protection) faced a continuous decline with 16 consecutive limit downs, and ST Jinglun saw 6 consecutive limit downs [1]