SMART BATTERY PROVIDED WITH A POWER SUPPLY VOLTAGE MANAGEMENT CIRCUIT

摘要

The smart battery includes an electronic circuit for managing the supply voltage connected to a battery. The electronic circuit includes a battery end-of-life detector, a management unit, an oscillator stage, a DC-DC converter powered on when the supply voltage of the battery is close or equal to a battery end-of-life threshold, and a data or command communication interface. The data or command communication interface is a 1-wire interface which is connected to a positive supply voltage terminal of the smart battery for transmitting a modulated data or command signal through one of the supply voltage terminals. The modulated signal transmitted by the interface may include battery end-of-life information.

主权项

1. A smart battery which includes an electronic supply voltage management circuit connected to a battery, the electronic circuit including a battery end-of-life detector, a management unit, an oscillator stage and a data or command communication interface,
wherein the data or command communication interface is connected to one of the supply voltage terminals of the smart battery for transmitting and receiving a modulated digital data or command signal through one of the supply voltage terminals, and wherein the data or command communication interface is arranged for receiving a modulated signal from an electrical apparatus powered by the smart battery, the modulated signal received by the interface including a command to set the battery end-of-life threshold after which a DC-DC converter of the electronic circuit is powered on by the management unit to supply the supply voltage of the smart battery.