Battery pack

A battery pack, comprising:

• a cell assembly having a plurality of secondary batteries;
• an electronic component plate directly placed on an upper portion of the cell assembly and having a plate shape and configured to allow at least one electronic component to be mounted thereon;
• a lower housing configured to have an inner space with an open top and to accommodate the cell assembly and the electronic component plate in the inner space;
• and
• an upper housing configured to cover the open top of the lower housing,
• wherein coupling members are respectively provided between a lower portion of the cell assembly and the lower housing, between the upper portion of the cell assembly and the electronic component plate, between the electronic component plate and the upper housing, and between the lower housing and the upper housing to couple and fix each other,
• wherein the cell assembly has an assembly protrusion provided thereon, the electronic component plate has a first plate hole provided at a location corresponding to the assembly protrusion, and the assembly protrusion is inserted into and coupled to the first plate hole to couple and fix the upper portion of the cell assembly to the electronic component plate, and
• wherein an assembly hole provided at a lower outer side of the cell assembly to protrude in a horizontal direction, and a lower protrusion is formed on the upper surface of the lower housing at a location corresponding to the assembly hole to insert into the assembly hole.