Battery discriminating method, dry cell battery pack, and electronic device
First Claim
1. An electronic device supplied with power by a battery pack having first, second and third terminals and a plurality of dry battery cells, said first and second terminals corresponding to positive and negative electrodes of said battery pack, respectively, and said third terminal being connected via a first resistor to an electric connecting point between batteries, said electronic device comprising:
- means for connecting a second resistor between the third terminal and the second terminal;
means for detecting a voltage on the third terminal at said third terminal resulting from the connected resistor; and
means for determining a type of said battery pack based on the detected voltage value.
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Abstract
A battery discriminating method discriminates between smart battery packs and dry cell battery packs with a simple structure. A dry cell battery pack is composed of a case for storing a plurality of dry batteries connected in series, positive and negative electrodes which are provided in the case and connected to the series-connected dry batteries, and a resistance element of which one end is connected to the series-connected dry batteries and the other end is connected to a terminal provided in the case. A predetermined voltage is supplied to a terminal for discriminating the battery of a battery pack via a resistor, and the voltage value of this terminal is detected to discriminate the type of the battery pack according to the detected voltage value.
28 Citations
3 Claims
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1. An electronic device supplied with power by a battery pack having first, second and third terminals and a plurality of dry battery cells, said first and second terminals corresponding to positive and negative electrodes of said battery pack, respectively, and said third terminal being connected via a first resistor to an electric connecting point between batteries, said electronic device comprising:
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means for connecting a second resistor between the third terminal and the second terminal;
means for detecting a voltage on the third terminal at said third terminal resulting from the connected resistor; and
means for determining a type of said battery pack based on the detected voltage value. - View Dependent Claims (2, 3)
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Specification