The continuous and unbroken time-series photometry data of Kepler and the Transiting Exoplanet Survey Satellite (TESS) provide a good opportunity to study the continuous variations in the light curve of binary stars. This paper reports the discoveries of the correlation between the two maxima on the light curve of KIC 06852488 and the correlation between the O’Connell effect and the O − C curve. The Max I and Max II vary with a same cycle length of ∼2000 days and a 180 phase difference, and the variation of the Max II coincides with the O − C curve of the primary light minima. After analyzing the Kepler and TESS light curves, it is detected that this binary is a semi-detached system with a mass ratio of 0.4622(0.0036). The secondary component is filling its critical Roche lobe, while the primary component is only filling 12.25(0.10)% of the lobe volume that contributes more than 85% luminosity of the total system. The variation of the O’Connell effect could be explained by an evolving hot spot on the primary component and an evolving cool spot on the secondary component. It is found that their positions are symmetrical with the inner Lagrange L1 point. After subtracting the binary brightness changes, six optical flares are detected that come from the cool secondary. We calculated the energy of flares and found that all of the flares are superflares. Both the flares and an evolving dark spot on the lobe-filling secondary component make the system a very interesting source to investigate the effects of binary interaction on the magnetic activities.

开普勒和瞬态系外行星观测卫星（TESS）的连续无间断的时间序列光度数据为研究双星光曲线的连续变化提供了一个很好的机会。本文报道了在KIC 06852488的光曲线上两个最大值之间的相关性以及O'Connell效应与O - C曲线之间的相关性的发现。Max I和Max II的变化周期相同，约为2000天，相位差为180，Max II的变化与O - C一致初级光源最小值的曲线。通过分析开普勒和TESS光曲线，可以发现该二元体系是质量比为0.4622（0.0036）的半分离体系。次要成分正在填充其关键的罗氏瓣，而主要成分仅填充了叶体积的12.25（0.10）％，占整个系统的光度超过85％。O'Connell效应的变化可以用主要成分上不断发展的热点和次要成分上不断发展的凉点来解释。发现它们的位置与内部拉格朗日L1点对称。减去二进制亮度变化后，会检测到来自较冷的次级光源的六个光斑。我们计算了耀斑的能量，发现所有耀斑都是超耀斑。