| 摘要 |
A secondary battery pack is provided to inhibit ignition/explosion even when a sharp conductive object penetrates into a half or more of the battery pack by non-sequentially connecting two or more batteries in series. A secondary battery pack(200) includes N secondary batteries(210) connected in series. As the order of each battery is taken as k(wherein k is an integer of 1 to N, and N is the number of secondary batteries used in the battery pack), the sum of the two adjacent odd number and even number becomes (N+1), and the sum of the two adjacent even number and odd number becomes (N+2), in a sequence where the orders of the batteries connected in series are represented by the positional orders. |
