Global Patent Index - EP 1805829 B8

EP 1805829 B8 20100414 - SECONDARY BATTERY HAVING CONSTANT-VOLTAGE DEVICE

Title (en)

SECONDARY BATTERY HAVING CONSTANT-VOLTAGE DEVICE

Title (de)

SEKUNDÄRBATTERIE MIT KONSTANTSPANNUNG

Title (fr)

ACCUMULATEUR A TENSION CONSTANTE

Publication

EP 1805829 B8 (EN)

Application

EP 05780549 A

Priority

  • KR 2005002680 W
  • KR 20040065928 A

Abstract (en)

[origin: WO2006019251A1] Disclosed is a secondary battery having a constant- voltage device for preventing the secondary battery from being excessively overcharged. The breakdown voltage of the constant- voltage device is lower than the explosion or ignition voltage of the secondary battery, so the discharge operation may occur before the secondary battery is exploded or ignited even if the voltage of the secondary battery rises above the overcharge voltage, thereby protecting the secondary battery from explosion or ignition. The leakage current value of the constant- voltage device is less than 0.05% of the capacity value of the secondary battery under the maximum charge voltage of the secondary battery, or the breakdown voltage of the constant- voltage device is higher than the maximum charge voltage of the secondary battery. Thus, the constant- voltage device rarely generates the leakage current even if the secondary battery has been charged with the maximum charge voltage.

IPC 8 full level

H01M 2/34 (2006.01)

CPC (source: EP)

H01M 2/34 (2013.01); H01M 10/4235 (2013.01); Y02E 60/10 (2013.01)

Designated contracting state (EPC)

DE FI FR GB

DOCDB simple family (publication)

WO 2006019251 A1 20060223; WO 2006019251 A8 20070125; CN 100539256 C 20090909; CN 1985386 A 20070620; DE 602005019188 D1 20100318; EP 1805829 A1 20070711; EP 1805829 A4 20080514; EP 1805829 B1 20100127; EP 1805829 B8 20100414; JP 2008504665 A 20080214; JP 2012074401 A 20120412; KR 100882433 B1 20090205; KR 20060050510 A 20060519; TW 200612592 A 20060416; TW I275193 B 20070301; US 2006038534 A1 20060223; US 7737661 B2 20100615

DOCDB simple family (application)

KR 2005002680 W 20050817; CN 200580023324 A 20050817; DE 602005019188 T 20050817; EP 05780549 A 20050817; JP 2007519136 A 20050817; JP 2012002304 A 20120110; KR 20050075118 A 20050817; TW 94128056 A 20050817; US 20805905 A 20050819