US 5,770,898 AGranted

Modular power management system with common EMC barrier

AssigneeSiemens Business Communication Systems, Inc.

InventorsMatthew T. Hannigan, Ronald R. Carleton, Paul Bonomo, John W. Kerr, Jr., James M. Worsham, Robin Spires, Franz Gisin, William Beyda

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Abstract

A power management system for providing power to a main system, such as a telecommunications device, includes a number of modules that are joined by module-to-module interfaces that achieve a common EMC containment barrier. In one embodiment, a battery module defines a first EMC compartment that houses one or more backup batteries, a battery management module defines a second EMC compartment that includes circuitry such as recharging circuitry, and a power entry module includes a third EMC compartment. The power entry module has an input/output connection to the battery management module and has an AC input. An output cable extends from the power entry module to the main system. Compliant metallic module-to-module gaskets preserve EMC integrity at cable pass-throughs from the battery management module to the battery and power entry modules. The modules are mounted to a system housing in a manner that secures the modules in a desired relationship.

Claims19

Dependent claims

A power management system having electromagnetic compatibility containment comprising:

a first module having walls that define a first generally enclosed area, said first module having circuit means for supplying power required to operate a device of interest, said circuit means being contained within said first generally enclosed area;
a line current input cable in communication with said circuit means and extending from said first module for connection to a source of power;
a battery current input cable in communication with said circuit means and extending from said first module for connection to a supply of direct current;
an output current cable in communication with said circuit means and extending from said first module for connection to said device of interest;
a second module having walls that define a second generally enclosed area, said second module being adjacent to said first module and having battery management circuitry in communication with said circuit means via said battery current input cable, said battery management circuitry being contained within said second generally enclosed area;
and
a third module having walls that define a third generally enclosed area, said third module having a battery and being adjacent to said second module, said battery being contained within said third generally enclosed area and being in communication with said battery management circuitry of said second module.

4 more elements

An electromagnetic compatibility (EMC) containment system for power management to operate a device of interest comprising:

a system housing;
a battery subassembly having a metallic frame that forms a first EMC compartment, said battery subassembly being fastened to said system housing, said battery subassembly having a battery located within said first EMC compartment and having a first opening in said metallic frame for passage of a battery cable connected to said battery;
a battery management subassembly having a metallic frame that forms a second EMC compartment, said battery management subassembly being fastened to said system housing independently of said battery subassembly, said battery management subassembly having battery recharging circuitry and having a second opening in said metallic frame in alignment with said first opening of said battery subassembly to receive said battery cable, said battery management subassembly having a third opening in said metallic frame for passage of a direct current input cable;
a first metal gasket extending from said first opening to said second opening to preserve integrity of EMC containment between said first and second EMC compartments;
a power entry subassembly having a metallic frame that forms a third EMC compartment, said power entry subassembly being fastened to said system housing independently of said battery and battery management subassemblies, said power entry subassembly having a fourth opening in said metallic frame in alignment with said third opening of said battery management subassembly to receive said direct current input cable, said power entry subassembly having an alternating current input cable extending therefrom for connection to a source of alternating current and having an output cable extending therefrom for connection to said device of interest, said power entry subassembly further having circuit means for supplying preselected voltages to said output cable;
and
a second metal gasket extending from said third opening of said battery management subassembly to said fourth opening of said power entry subassembly to preserve integrity of EMC containment between said second and third EMC compartments.

4 more elements

Dependencies are inferred from the claim text.