| 摘要 |
PROBLEM TO BE SOLVED: To provide a unit battery, assembled battery and battery pack, which are able to make a user aware of a leakage of electrolyte in an early stage while preventing the overall cost by a simple configuration.SOLUTION: In a unit battery 10, an odorant 30 stronger than or different from electrolyte 24 in odor is provided in the interiors (sealing parts 12a, 14a and internal space SP) of accommodating part (a first accommodating member 12 and second accommodating member 14) including the sealing parts 12a, 14a. If predetermined conditions regarding damage to the accommodating part are satisfied, alarm is given on the basis of the odorant 30. In this configuration, since the odorant 30 is stronger than or different from the electrolyte 24 in odor, damage to the unit battery 10 (specifically, accommodating part) can be notified in an early stage. By virtue of such a simple configuration in which the odorant 30 is provided in the interior of the accommodating part, manufacturing cost of the unit battery 10 can be reduced. |
