| 摘要 |
PURPOSE: A battery pack assembly is provided to reduce the weight and size of the battery pack assembly and to reduce the number of assembling components. CONSTITUTION: A battery pack assembly comprises a first sliding groove part(13) on the unit battery pack main body(10) with a connection terminal on the side thereof, and a first sliding protrusion(14) which is separately formed. A second sliding groove part(15) and a second sliding protrusion(16) are respectively formed on the first sliding groove part and the first sliding protrusion part on the bottom of the main body to be symmetrical in a diagonal direction. The first or second sliding groove part and the first or second sliding protrusion of one unit battery pack(1) are combined with the first or second sliding groove part and the first or second sliding protrusion of another battery pack.
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