BATTERY WITH UNIVERSAL CHARGING INPUT
A battery includes a battery housing containing a rechargeable cell for providing an output voltage and a charging circuit. The charging circuit is coupled to the rechargeable cell and includes a voltage converter to convert an input voltage to the charging circuit to a charging voltage to charge the rechargeable cell.
1 . A battery comprising:
a battery housing, containing:
a charging terminal input;
a rechargeable cell for providing an output voltage; and
a charging circuit coupled to the rechargeable cell, the charging circuit comprising:
a voltage converter coupled to the charging terminal input to convert an input voltage at the charging terminal input to a charging voltage to charge the rechargeable cell.
2 . The battery of claim 1 further comprises:
a first charging terminal supported by the battery housing, the first charging terminal connected to the charging circuit;
a discharging terminal supported by the battery housing; and
a ground terminal supported by the battery housing, the ground terminal connected to both the rechargeable cell and the charging circuit.
3 . The battery of claim 2 wherein the discharging terminal of the battery housing is connected to the discharging terminal of the rechargeable cell.
4 . The battery of claim 2 wherein the first charging terminal is configured to accept the input voltage from one of a car adapter, a wall adapter, a USB port, a portable charger, an inductive charger, a solar charger and a charging pad.
5 . The battery of claim 1 wherein the charging circuit is placed inside the battery housing at such proximity that the IR drop between the charging circuit and the rechargeable cell is less than a threshold value.
6 . The battery of claim 2 wherein the rechargeable cell further comprises a second charging terminal to couple the rechargeable cell to the charging circuit.
7 . The battery of claim 1 wherein the voltage converter in the charging circuit provides a constant voltage output.
8 . The battery of claim 7 wherein the voltage converter in the charging circuit is one of an analog converter and a digital converter.
9 . The battery of claim 1 further comprising a digital micro-controller unit to control the charging circuit.
10 . The battery of claim 7 wherein the voltage converter in the charging circuit further provides a constant current output.
11 . The battery of claim 1 wherein the input voltage is in between 9V and 16V.
12 . The battery of claim 1 wherein the input voltage is substantially equal to 12V.
13 . A battery comprising:
a battery housing, containing:
a charging terminal input;
a rechargeable cell for providing an output voltage; and
a charging circuit, coupled to the rechargeable cell, the charging circuit, comprising:
a digital controller to control the charging circuit; and
a voltage converter coupled to the digital controller, configured to convert an input voltage to the charging circuit to provide an output voltage to charge the rechargeable cell.
14 . The battery of claim 13 wherein the battery is configured to accept an input voltage provided by a charging pad.
15 . The battery of claim 14 wherein configuration of the battery corresponds to a charging pad having a plurality of stripes of alternating polarity.
16 . The battery of claim 13 wherein the charging circuit further comprises a rectifier to convert an alternating current electrical energy to substantially direct current electrical energy that is fed to the voltage converter.
17 . The battery of claim 13 further comprises:
a first charging terminal supported by the battery housing, the first charging terminal connected to the charging circuit; and
a discharging terminal supported by the battery housing and coupled to a second, different discharge terminal on the rechargeable cell; and
a ground terminal supported by the battery housing, the ground terminal connected to a ground terminal on the rechargeable cell and to the charging circuit.
18 . A rechargeable device comprising:
a device housing containing a battery having an integrated charging circuit and a charging terminal input, the battery comprising:
a battery housing, containing:
a rechargeable cell for providing an output voltage; and
a charging circuit coupled to the charging terminal input and the rechargeable cell.
19 . The device of claim 18 wherein the charging circuit further comprises
a digital controller; and
a voltage converter configured to convert an input voltage to a charging voltage for charging the rechargeable cell.
20 . The device of claim 18 wherein the device housing, houses the battery in a user-inaccessible portion of the device housing.
21 . The device of claim 18 wherein the device housing, houses the battery in a user-accessible portion of the device housing.
22 . The device of claim 21 wherein the device is a mobile telephone and the mobile telephone includes a removable back cover that houses the battery.
23 . The device of claim 21 wherein the device is a mobile telephone and the mobile telephone includes a removable back cover that covers a compartment that houses the battery in the mobile phone.
24 . The device of claim 21 wherein the device includes a removable back cover that houses the battery.
25 . The device of claim 21 wherein the device includes a removable back cover that covers a compartment that houses the battery in the device.