Battery replacing device and battery switch system of electric commercial vehicle

The utility model relates to a battery replacing device applicable to an electric commercial vehicle. The battery replacing device comprises a main framework, a positioning mechanism, a rotating mechanism, a sidesway mechanism and a push-and-pull mechanism, wherein, the positioning mechanism comprises a vertical positioning mechanism and a horizontal positioning mechanism; the vertical positioning mechanism is arranged in the main framework; the horizontal positioning mechanism is arranged at the lower part of the main framework; the rotating mechanism is arranged at the lower part of the vertical positioning mechanism; the sidesway mechanism is arranged on the rotating mechanism; and the push-and-pull mechanism is arranged on the sidesway mechanism. The utility model further relates to a battery switch system including the battery replacing device. The battery replacing device can automatically replace a battery pack of the electric commercial vehicle, the entire battery pack loading and unloading process is completed through the battery replacing device and very convenient, and the replacement time is short; since the battery replacement efficiency is improved, more times of battery replacement can be completed within a unit time, and the battery replacement cycle is shorter. Therefore, a battery charger can more adequately perform charging, and the utilization ratio is higher.