| 摘要 |
<p>A protection device of power battery, a protection device system of power battery and a protection method of power battery are provided. The device includes a battery box which is sealed, wherein liquid is provided inside the box and a battery group is provided in the liquid inside the battery box. The device is capable of balancing the environment temperature of the cells in the battery group so as to prevent performance of the cells from decreasing due to the environment temperature difference between the cells, and prolong the usable life of the power battery. Further, the liquid seal performance of the liquid can act the fire proof effect.</p> |
