PROTECTION APPARATUS FOR RECHARGEABLE BATTERY AND PROTECTION METHOD FOR RECHARGEABLE BATTERY USING THE SAME

摘要

A protection apparatus for a rechargeable battery includes a battery module, a cathode power line, an anode power line, a signal line, and a battery protector. The battery module includes a unit cell, a conductor case, a cathode, and an anode. The battery protector measures a charged voltage of the unit cell through the cathode power line and the anode power line, measures a detection voltage of the unit cell through the anode power line and the signal line, and determines a charged state of the unit cell based on a calculated voltage ratio of the charged voltage and the detection voltage.

主权项

1. A protection apparatus for a rechargeable battery, comprising:
a battery module including a unit cell, a conductor case, a cathode, and an anode; a cathode power line connected to the cathode; an anode power line connected to the anode; a signal line connected to the case; and a battery protector to measure a charged voltage of the unit cell through the cathode power line and the anode power line, to measure a detection voltage of the unit cell through the anode power line and the signal line, and to determine a charged state of the unit cell based on a calculated voltage ratio of the charged voltage and the detection voltage.