Battery pack

A battery pack, comprising:

• a charging-discharging circuit comprising at least one battery cell assembly that comprises a plurality of battery cells that are mechanically and electrically integrated;
• a battery-pack enclosure that accommodates the charging-discharging circuit;
• at least one high-voltage interface connector that is disposed on the battery-pack enclosure and configured to transmit high-voltage power between the battery pack and an external electrical equipment;
• a high-voltage switching circuit disposed within the battery pack and configured to selectively open and close a high-voltage electrical connection between the charging-discharging circuit and the external electrical equipment;
• a battery management circuit disposed within the battery pack and configured to control and drive the high-voltage switching circuit;
• wherein the battery-pack enclosure is formed by at least one tubing-shaped casing stacked vertically as a tube stack, and two lid modules respectively covering opposite ends of the tube stack, thereby forming the battery-pack enclosure configured to provide an insulating barrier that isolates the at least one battery cell assembly from an exterior of the battery pack;
• and
• wherein the two lid modules comprise a first lid module and a second lid module.