삼성SDI 006400 산업 이차전지 moat (7 Powers) Scale Economy + Process Power secular fit EV 배터리 A2 수급 Z-score (외인·기관) A3 Issue Score (뉴스·텔레그램) B7 Weinstein Stage B8 Earnings Acceleration (CANSLIM CAS) B11 Forensic Gate B12 Quality Compounder B14 SUE + PEAD (분기 발표)