如图,\(\triangle AB_{1}C_{1}\),\(\triangle B_{1}B_{2}C_{2}\),\(\triangle B_{2}B_{3}C_{3}\)是三个边长为\(2\)的等边三角形,且有一条边在同一直线上,边\(B_{3}C_{3}\)上有\(5\)个不同的点\(P_{1}\),\(P_{2}\),\(P_{3}\),\(P_{4}\),\(P_{5}\),设\(m_{i}= \overrightarrow{AC_{2}}\cdot \overrightarrow{AP_{i}}(i=1,2,…,5)\),则\(m_{1}+m_{2}+…+m_{5}=\) ______ .