Smart battery provided with a power supply voltage management circuit
First Claim
1. A smart battery comprising an electronic supply voltage management circuit connected to a battery, the electronic supply voltage management circuit including a battery end-of-life detector, a management unit, an oscillator stage, a DC-DC converter, and a data or command communication interface,wherein the battery is a button cell that includes a one wire interface as the data or command communication interface,wherein the smart battery includes supply voltage terminals,wherein the data or command communication interface is connected to one of the supply voltage terminals of the smart battery,wherein the data or command communication interface is configured to transmit and receive a modulated digital data or command signal through one of the supply voltage terminals,wherein the data or command communication interface is configured to receive a modulated signal from an electrical apparatus powered by the smart battery, the modulated signal received by the data or command communication interface including a command to set a battery end-of-life threshold after which the DC-DC converter is powered on by the management unit and supplies the supply voltage of the smart battery, andwherein the management unit is programmed to set the battery end-of-life threshold based on the modulated signal received by the data or command communication interface.
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Accused Products
Abstract
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.
6 Citations
12 Claims
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1. A smart battery comprising an electronic supply voltage management circuit connected to a battery, the electronic supply voltage management circuit including a battery end-of-life detector, a management unit, an oscillator stage, a DC-DC converter, and a data or command communication interface,
wherein the battery is a button cell that includes a one wire interface as the data or command communication interface, wherein the smart battery includes supply voltage terminals, wherein the data or command communication interface is connected to one of the supply voltage terminals of the smart battery, wherein the data or command communication interface is configured to transmit and receive a modulated digital data or command signal through one of the supply voltage terminals, wherein the data or command communication interface is configured to receive a modulated signal from an electrical apparatus powered by the smart battery, the modulated signal received by the data or command communication interface including a command to set a battery end-of-life threshold after which the DC-DC converter is powered on by the management unit and supplies the supply voltage of the smart battery, and wherein the management unit is programmed to set the battery end-of-life threshold based on the modulated signal received by the data or command communication interface.
Specification