Protective circuit for battery

Application Number: 00106941
Application Date: 2000.04.21
Publication Number: 1271197
Publication Date: 2000.10.25
Priority Information: 1999/4/21 CH 0727/99
International: H02H7/18
Applicant(s) Name: EM Microelectronics Malin
Address:
Inventor(s) Name: A. Decoob
Patent Agency Code: 72001
Patent Agent: chen ji
Abstract The invention concerns a protective circuit for protecting a rechargeable battery against currents of too high intensity. The protective circuit (10) includes detection and comparison means (30, 31, 32) for generating a control signal in response to the comparison of a reference voltage (VREF) and a measuring voltage (VM) representative of the charge or discharge current (ICH, IDCH) passing through the battery. According to the invention, the detection and comparison means include adjustment means for compensating a temperature dependence of the measuring voltage (VM) and/or the reference voltage, these adjustment means including means for generating diode voltages (VBE1 to VBE5).