Rack energy storage apparatus, and energy storage module

A rack energy storage apparatus, comprising:

• a rack;
• energy storage modules configured to be stored in the rack in a stacked manner;
• and
• first busbars configured to couple the energy storage modules in series with each other, wherein
• each energy storage module includes:
• energy storage cells;
• a first terminal connector arranged on a specific face of the energy storage module, the first terminal connector extending in a stacking direction of the energy storage modules and being open at ends of the first terminal connector in the stacking direction;
• and
• a second terminal connector arranged on the specific face, the second terminal connector extending in a perpendicular direction and being open at an end of the second terminal connector in the perpendicular direction, the perpendicular direction being perpendicular to the stacking direction;
• and
• each first busbar includes:
• a first end portion extending in the stacking direction and being configured to be coupled to the first terminal connector;
• and
• a second end portion extending in the perpendicular direction and being configured to be coupled to the second terminal connector.