Battery protection circuits detection method and apparatus
First Claim
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1. A battery protection circuit comprising:
- a battery with varying charge levels;
a protector IC;
a first transistor connected to a first output pin of said protector IC;
a second transistor connected to a second output pin of said protector IC;
a first diode connected at the output of the first transistor; and
a second diode connected to the output of the second transistor.
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Abstract
A method to detect the presence of battery protection circuits in any battery powered product. The major advantage of the method is to make the battery voltage very smooth during the charging process. The proposed circuit can give a good prediction of protection switching turn on time. This can provide the battery powered system work smoothly by avoiding any battery voltage discontinuity. The proposed invention addresses the issue of deep discharge and provides a solution through a discharge test procedure.
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Citations
15 Claims
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1. A battery protection circuit comprising:
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a battery with varying charge levels; a protector IC; a first transistor connected to a first output pin of said protector IC; a second transistor connected to a second output pin of said protector IC; a first diode connected at the output of the first transistor; and a second diode connected to the output of the second transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method to test the discharge level of a battery comprising:
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setting a timer for a period of time; detecting presence of a battery; setting a discharge test threshold voltage value; checking if a battery terminal voltage is lower than the discharge test threshold value; checking if a discharge test path is closed; trickle charging if the discharge test path is not closed; and charging at a full voltage if the discharge test path is closed. - View Dependent Claims (12, 13, 14, 15)
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Specification