Battery discriminating method, dry cell battery pack, and electronic device
AssigneeSony Corporation
InventorYoshinari Higuchi
Life of this patent
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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.
Claims3
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.
Dependencies are inferred from the claim text.