Electrical transmission or interconnection systems – Plural supply circuits or sources
Reexamination Certificate
2002-10-11
2004-05-04
DeBeradinis, Robert L (Department: 2836)
Electrical transmission or interconnection systems
Plural supply circuits or sources
C307S048000, C307S139000, C307S140000, C307S150000
Reexamination Certificate
active
06731022
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates in general to battery arrays, and, in particular, to self healing dynamically configurable battery arrays that are capable of forming a plurality instantaneous power buses, each of which is configured to the electrical power requirements of specific components or modules (loads) of an electrical circuit, sometimes referred to herein as a “digital battery” or a “dynamic battery array”.
2. Description of the Prior Art
Electronic devices are becoming more and more complex. Such complex electronic devices typically contain a plurality of different components or modules (loads), each of which has its own unique voltage and current requirements. As used herein “load” includes components, modules, separately powered elements of components, and the like. Batteries typically supply power having a predetermined nominal value to a common bus. Power for the individual components is drawn from the common bus and passed through various power conditioning components to provide each of the operative components with the particular current and voltage values that the specific component requires to perform its intended function.
Electrical circuits of all kinds and sizes, including electronic circuits, require the application of electrical energy for their operation. Batteries of one kind or another have long been used for this purpose. Typically, such a battery provides an output with relatively constant parameters such as, for example, voltage and amperage. Generally, some effort is made to see that the values of the battery output parameters remain substantially constant.
Electrical circuits are typically composed of several different operating components and associated electrical energy conditioning components. These different operating components often have different voltage, amperage and other electrical energy parameter requirements. Many of the components in the circuit are included simply to adjust the various values of the output from the battery to the values that are required by the individual operating components. Much of the energy consumed by the circuit is consumed by the electrical energy conditioning components that tailor the output of the battery to the requirements of the various operating components. Much of the expense and difficulty in the construction of a circuit arises from the need for building in such energy conditioning components that are needed only to tailor the output of the battery to meet the requirements of the individual operating components. The overall size and complexity of a circuit is necessarily adjusted to accommodate the inclusion of these energy conditioning components. The effort to miniaturize circuits is hampered by the need for the inclusion of such energy conditioning components in these miniaturized circuits. If these battery output tailoring components could be eliminated great improvements could be made in circuits of all sizes, purposes, and configurations.
Common failure modes of batteries in general are internal shorting or formation of an open circuit. When battery cells are arranged in a static array, the failure of one cell will generally change the parameters of the electrical energy that can be provided by the array. For example, if one of a set of parallel connected battery cells is removed the amperage of the output drops. If one of a set of series connected battery cells is removed the voltage of the output drops. The failure of a cell through an open circuit may completely disrupt the operation of the battery array (for example, in a series arrangement of cells). The failure of a cell through internal shorting may completely disrupt the operation of the battery array. Each cell that fails or becomes partially compromised changes the parameters further.
The operating components in an electrical circuit are generally designed to operate under substantially constant energy parameters. Thus, when the parameters of the output from the battery array change, because of the loss or malfunction of a cell from the battery array, the circuit either stops operating or performs poorly. Various expedients have been proposed for solving this problem. It has been proposed to lithographically fabricate a battery layer that contains a plurality of individual batteries, and a separate layer that contains a plurality of data processing cells. The two layers are electrically insulated from one another, and each data processing cell is electrically connected to its own battery. See, for example, Norman U.S. Pat. No. 6,154,855.
Norman U.S. Pat. No. 6,154,855 proposes to provide fault tolerance in the array of data processing cells by including redundant data processing cells, automatically eliminating bad processing cells from the circuit, and replacing them with spare cells. There is no indication that any power conditioning components have been eliminated from the circuits in Norman's data processing cells, or that such elimination would be possible. Norman discloses a data processing system comprising a monolithic redundant network of data processing cells. It is suggested, inter alia, that the monolithic structure could be in the form of a multi-layered thin flexible sheet approximately the size of a credit card. The data processing cells in the network are interchangeable so that duplicate spare cells may be used to provide redundancy. Each cell includes a plurality of components such as, for example, a processor, memory, and input/output means. It is suggested that each cell could also have its own individual battery cell so that there would be full redundancy at the cell level. That is, each data processing cell should have its own individual battery cell in a one-to-one relationship. The battery cells in the expedient proposed by Norman are not fungible as between the data processing cells. This one-to-one relationship would provide a common bus for all of the power consuming components within a data processing cell. It is not likely that all of the components within a cell will operate on the same current and voltage levels. Any adjustment to the power output of the battery cell, which a given component within the data processing cell might require, would have to be provided by power conditioning elements within the circuitry of that data processing cell. It is also suggested by Norman that non-defective neighboring cells in a specific region of the total network might be joined in a power-sharing bus. Whether the proposed connection would be serial or parallel is not clear. Such a common bus with multiple interconnected battery cells would necessarily provide more current or more voltage than a single battery cell could produce, so the power available from a common bus would have different characteristics from that provided from a single battery cell in a single data processing cell. There is no indication as to how power from a common bus could be utilized by individual cells that are designed to run on the output of a single battery cell. Random dynamic connectivity between the individual power consuming components in any given data processing cell, so that each power consuming component has its own individual dynamic fault tolerant power bus is contrary to the teachings of Norman. There is no teaching in Norman that each power consuming component within a data processing cell should have its own individual power bus, and there is no suggestion that there would be any advantage to such an arrangement.
Various expedients had been proposed for providing a dynamic array of battery cells. Harshe U.S. Pat. No. 5,563,002, for example, proposed the use of a programmable battery array with a single output power bus to address the problem of achieving a stable overall voltage or current output despite varying loads and battery charge conditions. Harshe proposes the use of a plurality of discrete cells that are selectively connectable by mechanical switches as the load varies so as to provide a stable output to a single bus. Harshe does not address the problem of dynami
DeBeradinis Robert L
DeNovo Research, LLC
Jagger Bruce A.
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