Provided are: a protection element which is less likely to generate sparks even when a high voltage is applied, and which is capable of safely and quickly cutting off a current path; and a battery pack using the protection element. The protection element is provided with an insulating substrate (2), a fuse (3), a heating element (4) for fusing the fuse (3), a heating element power supply electrode (5), a first extraction electrode (6) which is extracted from the heating element power supply electrode (5) and is connected to one end of the heating element (4), an intermediate electrode (8) which is in contact with the fuse (3), a heating element connection electrode (9) which connects the heating element (4) and the intermediate electrode (8), and a heating element connection electrode (9). The first extraction electrode (6) is extracted from one end of the heating element (4), the second extraction electrode (10) is extracted from the other end of the heating element (4) and is connected with the other end of the heating element (4), and the insulating layer (7) covers the heating element (4), the first extraction electrode (6) and the second extraction electrode (10) and is laminated with the intermediate electrode (8). The intermediate electrode (8) does not overlap with the first extraction electrode (6) through the insulating layer (7) and overlaps with the second extraction electrode (10).
本发明提供即使在被施加了高电压的情况下也难以产生火花且能够安全且快速地切断电流路径的保护元件及使用了该保护元件的电池组。该保护元件具有绝缘基板(2)、保险丝(3)、熔断保险丝(3)的发热体(4)、发热体供电电极(5)、从发热体供电电极(5)引出且与发热体(4)的一端部连接的第一引出电极(6)、与保险丝(3)相接的中间电极(8)、连接发热体(4)及中间电极(8)的发热体连接电极(9)、从发热体连接电极(9)引出且与发热体(4)的另一端部连接的第二引出电极(10)、以及被覆发热体(4)、第一引出电极(6)以及第二引出电极(10)且层叠有中间电极(8)的绝缘层(7),中间电极(8)经由绝缘层(7)与第一引出电极(6)不重叠且与第二引出电极(10)重叠。
PROTECTIVE ELEMENT AND BATTERY PACK
保护元件以及电池组
2022-12-02
Patent
Elektronische Ressource
Chinesisch
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 |