| 摘要 |
A battery protection circuit for use between a battery output and a load is achieved. The circuit comprises, first, a plurality of fused cells coupled in parallel between the battery output and the load. Each fused cell comprises, first, a fuse having first and second terminals where the first terminal is coupled to a battery output. Second, a means having zener effect has a p terminal and an n terminal. The p terminal is coupled to the second terminal of the fuse. Finally, a cell switch having first and second terminals completes each fused cell. The cell switch first terminal is coupled to the second terminal of the fuse, and the cell switch second terminal is coupled to the n terminal of the diode to form a cell output. Finally, the battery protection circuit comprises a shorting switch, that may comprise a MOS transistor that exhibits punch through, that is coupled between the load and each fused cell output. The current source second terminal is coupled to ground. Finally, a switch is coupled between the plurality of diode-connected MOS transistors output and the current source first terminal. The plurality of fused cells forms a large current rating fuse that can be blown at a small current rating during error conditions using a sequential blowing technique.
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