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| High-temperature storage battery |
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| Voltage regulator with ferromagnetic filter |
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| Arrangement for the testing of high voltage direct current switches |
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| Semiconductor switch device |
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| Slope change detector |
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| Waveform instability detector |
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Battery charging system having remotely located charging units
| Details |
Inventors: Massaroni, Kenneth M.; Meadows, Vernon;
Assignee: Motorola, Inc. (Schaumburg, IL)
Primary Examiner: Hecker; Stuart N.
Assistant Examiner: Shin; K.
Attorney, Agent or Firm: Massaroni; Kenneth M.
A system for charging batteries having a system controller (12) and battery charging units (16) powered by a common power line (14). The system controller (12) contains charge instructions corresponding to various types of batteries and the battery packs (18) have an identifier to identify which set of instructions are used to charge the battery pack (18). Further, the battery charging units (16) and the system controller communicate over the common power line (14) by power line carrier communications. When a battery pack (18) is inserted into one of the battery charging units (16), it obtains the battery identification and sends it to the system controller (12). The system controller (12) alternatively sends the corresponding charge instructions to the charger, or begins to run the charge instructions and controls the charger remotely. In either case, the battery pack (18) is charged according to the charge instructions. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT While the specification concludes with claims defining the features of the invention that are regarded as novel, it is believed that the invention will be better understood from a consideration of the following description in conjunction with the drawing figures, in which like reference numerals are carried forward.
Referring now to FIG.
1, there is illustrated therein a block diagram of a battery charging system 10 in accordance with the invention.
There is shown therein a system control device such as a system controller 12, a power line 14, a plurality of battery charging units 16, and a battery pack 18.
The system controller 12 is preferably a personal computer since it has the advantages of being flexible and relatively inexpensive.
The system controller 12 stores charge process instructions optimized for many different battery types, and is powered by power line 14.
The power line 14 is a conventional power outlet such as 110 VAC or 220 VAC which is common to both the system controller 12 and the battery charging units 16.
The battery charging units 16 include variable DC power sources responsive to a charge controller having a program memory space, and which charge a battery pack 18 when it is inserted into the charging units.
The charging units are remotely located from the system controller 12, and may be conveniently located for individual users, such as on a desk or at a guard station.
Both the system controller 12 and the battery charging units 16 are equipped with a power line carrier (PLC) communications circuit.
PLC communication is performed by modulating the AC voltage of the power line 14 with high frequency signals.
The system controller 12 and each battery charging unit have a transmitter and a receiver section, combined into a transceiver (not shown).
Data, either digital or analog, is signaled between the system control computer and the battery charging units over the power line using PLC communication.
PLC communication is well known in the art and is commonly used in home control systems to control and monitor various household appliances and lamps
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Electrical and Wave 
