Means of communication between a battery pack and a battery powe

Details Means of communication between a battery pack and a battery powe Means of communication between a battery pack and a battery powe

1997-03-14

1999-03-30

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

320114, H01M 1046

Patent

active

058893814

ABSTRACT:
An apparatus enabling communication and control between a battery powered device, such as a cellular telephone, and a battery pack through a two-pin interface between the battery pack and the battery powered device is disclosed. A battery powered device includes means for selectively switching a load across the two-pin interface for the device. By selectively switching the load across the terminal of the interface, a voltage varying signal is generated. The creation of the voltage varying signal is controlled in such a manner that alterations in the voltage represent a binary-encoded signal. The voltage changes representing the binary-encoded signal are detected within a battery pack interconnected with the battery powered device and used to provide instructions to a controller controlling an apparatus associated with the battery pack device, such as vibrator alarm.

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