| 摘要 |
Explosion of rechargeable battery can be prevented in a relatively simple structure, at low cost, and without allowing spouting of electrolyte. A rechargeable battery 100D1 using a pressure-crush type protective device comprises a housing H including an internal electrode plate 120 spirally wound about a positive electrode and a negative electrode through a separator, a jacket 110 for accommodating this internal electrode plate 120, and a sealing body 140 for closing the opening of this jacket 110, a positive electrode (or negative electrode) output electrode 130 connected electrically to the internal electrode plate 120, a spacer 200 disposed beneath the sealing body 140 for insulating between the sealing body 140 and internal electrode plate 120, a pressure-crush type protective device A1 disposed in said spacer 200 as a pressure-sensitive element for detecting the internal pressure in the housing H, and an output terminal 400 connected electrically to one terminal of this pressure-crush type protective device A1 (one end of a conductor layer 210A1) for picking up the detection result of the internal pressure detected by the pressure-crush type protective device A1 electrically to outside, in which other terminal of the pressure-crush type protective device A1 (other end of the conductor 210A1) is connected electrically to the positive electrode (or negative electrode) output electrode 130.
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