Voltage judgment circuit and battery cell pack having the same
First Claim
1. A voltage judgment circuit comprising one or more diodes connected in a forward direction of a voltage to be judged, a current extraction section for extracting a forward current of said diodes, a comparison section for comparing an output current from said current extracting section against a specified current and an output section for outputting a control signal based on the result of comparison.
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Accused Products
Abstract
Disclosed herein is a voltage judgment circuit comprising one or more diodes inserted in the forward direction of a judgment voltage, a current extraction section for extracting a forward current of the diodes, and a comparison section for comparing an output current from the current extracting section with a specified current value to input the comparison results. According to the voltage judgment circuit of the present invention, the discharge after the charging can be prevented to perform the voltage judgment using a low consumption current with high accuracy. A battery cell pack having the above voltage judgment circuits also performs a similar judgment.
36 Citations
6 Claims
- 1. A voltage judgment circuit comprising one or more diodes connected in a forward direction of a voltage to be judged, a current extraction section for extracting a forward current of said diodes, a comparison section for comparing an output current from said current extracting section against a specified current and an output section for outputting a control signal based on the result of comparison.
Specification