To provide a protective element in which spark does not occur easily and a current path can be cut safely and immediately in the application of high voltage, and a battery pack including the same.SOLUTION: A protective element includes an insulating substrate 2, a fuse element 3, a heat generator 4 that melts the fuse element 3, a heat generator power supply electrode 5, a first extraction electrode 6 extracted from the heat generator power supply electrode 5 and connected to an end part of the heat generator 4, an intermediate electrode 8 in contact with the fuse element 3, a heat generator connection electrode 9 connecting the heat generator 4 and the intermediate electrode 8, a second extraction electrode 10 extracted from the heat generator connection electrode 9 and connected to the other end part of the heat generator 4, and an insulating layer 7 covering the heat generator 4, the first extraction electrode 6, and the second extraction electrode 10 and having the intermediate electrode 8 stacked thereon. The intermediate electrode 8 does not overlap with the first extraction electrode 6 and overlaps with the second extraction electrode 10 through the insulating layer 7.SELECTED DRAWING: Figure 1
【課題】高電圧が印加された場合でもスパークが発生しにくく安全かつ速やかに電流経路を遮断できる保護素子及びこれを用いたバッテリパックを提供する。【解決手段】絶縁基板2と、ヒューズエレメント3と、ヒューズエレメント3を溶断する発熱体4と、発熱体給電電極5と、発熱体給電電極5から引き出され、発熱体4の一端部と接続された第1の引出電極6と、ヒューズエレメント3と接する中間電極8と、発熱体4及び中間電極8を接続する発熱体接続電極9と、発熱体接続電極9から引き出され、発熱体4の他端部と接続された第2の引出電極10と、発熱体4、第1の引出電極6及び第2の引出電極10を被覆し、中間電極8が積層された絶縁層7を有し、中間電極8は、絶縁層7を介して、第1の引出電極6と重畳せず、且つ第2の引出電極10と重畳する。【選択図】図1
PROTECTIVE ELEMENT AND BATTERY PACK
保護素子及びバッテリパック
2021-11-01
Patent
Electronic Resource
Japanese
IPC: | H01H Elektrische Schalter , ELECTRIC SWITCHES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |