Charging device and method for battery pack, electronic equipment and vehicle

The invention relates to a charging device and method for a battery pack, electronic equipment and a vehicle. The battery pack (10) comprises a first battery pack (1) and a second battery pack (2) which are connected in series, the charging device (100) comprises a charging circuit (20) connected with the positive electrode and the negative electrode of the battery pack and connected with a node between the first battery pack and the second battery pack, and the charging system (200) is connected with the first battery pack and the second battery pack through the charging circuit; and the controller (30) is respectively connected with the charging circuit and the charging system and is used for controlling the charging system and the charging circuit when the first battery pack and the second battery pack are judged to be unbalanced in the charging process of the battery pack, so that the charging system charges one of the first battery pack and the second battery pack. Thus, equalization of the battery pack is realized in the charging process, and the situation that charging of the whole battery pack is cut off too early and part of battery packs are not fully charged due to imbalance of the battery pack is avoided.