Battery storage device and oiling method

A battery storage device, used for storing a battery and charging the battery, the battery having a connecting element for being connected to an electrical apparatus, wherein the battery storage device comprises:

• a battery placement rack;
• an oiling mechanism, arranged on the battery placement rack and configured to oil the connecting element;
• and
• a driving mechanism arranged on the battery placement rack, wherein the oiling mechanism is connected to an output end of the driving mechanism, and the driving mechanism is used for driving the oiling mechanism to move, so as to switch the oiling mechanism between a working position and a non-working position,
• wherein the oiling mechanism comprises a housing and an oiling element, the oiling element is arranged in the housing, and the housing has an opening into which the connecting element extends,
• wherein the housing is provided with an oil filling port for filling oil into the housing to wet the oiling element, and
• wherein a material of the oiling element is sponge or felt.