Battery protection circuit

Details Battery protection circuit Battery protection circuit

2006-01-31

2006-01-31

Sherry, Michael (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S136000, C361S090000, C361S091100

Reexamination Certificate

active

06992463

ABSTRACT:
A protection of battery system having battery cells Cell1˜Cell3, FET switches SW1, SW2that are connected to the high-side path and control on/off state of the path, as well as fuse F1for cutting said path, primary protection circuits31˜34that detect abnormalities in charging/discharging of the battery cells and turn the FET switches off, and secondary protecting controller38that detect abnormalities in charging/discharging of the battery cells and controls the operation of fuse F1. Secondary protecting controller38controls fuse F1if there is no tendency to a decrease in abnormalities after a prescribed period of time after control of the FET switch.

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