| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply unit which can stably assemble each battery cell. SOLUTION: Foot parts 34 are provided protruding toward outside from both sides of a battery cell and a pair of parallel rails 20 are provide to insertion-couple with the foot parts at a lower case 16. With this, since each battery cell 12 is fixed with the lower case 16 by the insertion coupling of the two foot parts 34 of the battery cell 12 with the two rails 20 provided with lower case 16, a stability is enhanced when assembled. |
