Management process for electrical energy storage battery systemsand control arrangement for application of the process
First Claim
1. A management process for systems made up of cells electrically connected in series that each include one or more electrical energy storage battery units to form a system for subjection to alternating charge and discharge phases in which each cell is associated with an individual current bypass circuit connected to terminals of said cell and controlled by a controller operating in accordance with indications supplied by a circuit measuring at least one parameter of said cell, said process comprising the steps of:
- measuring the parameter of each of the cells of the system; and
providing cell by cell balancing of the system based on said measurements, whereinbalancing is initiated at any time over a time period that covers all operating phases of said system when said system is supplying power to an application, and is provided both during battery charge phases and during idle phases between charging and discharging of said application.
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Accused Products
Abstract
A management process and a corresponding control arrangement are provided for systems made up of cells in series subjected to alternating charge, possibly fast charge, and discharge, possibly deep discharge, phases. Each cell of the system is associated with a current bypass connected to the terminals of that cell and controlled by a control system that operate in accordance with indications supplied by a measuring system individually assigned to the cells. The process provides for balancing, which can be initiated at any time, that is programmed to be used over a time period that can cover all of the various phases of operation of the system, in connection with an application supplied with power by the system, and which is effected cell by cell until balance, in a battery charge phase, in an idle phase between charges by a charger and discharges by the application and/or in discharge phases.
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Citations
20 Claims
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1. A management process for systems made up of cells electrically connected in series that each include one or more electrical energy storage battery units to form a system for subjection to alternating charge and discharge phases in which each cell is associated with an individual current bypass circuit connected to terminals of said cell and controlled by a controller operating in accordance with indications supplied by a circuit measuring at least one parameter of said cell, said process comprising the steps of:
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measuring the parameter of each of the cells of the system; and providing cell by cell balancing of the system based on said measurements, wherein balancing is initiated at any time over a time period that covers all operating phases of said system when said system is supplying power to an application, and is provided both during battery charge phases and during idle phases between charging and discharging of said application. - View Dependent Claims (2)
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3. A control arrangement for a battery storage system including a plurality of cells connected in series comprising:
a plurality of common modules, each common module including a measurement circuit measuring a cell current; a bypass circuit connected in parallel to one of the plurality of cells providing the cell with a particular state of charge; a controller controlling said bypass circuit and said measurement circuit based on received control signals; a measurement transducer for receiving measurement indications from said measurement circuits, converting them, and transmitting them; a common control logic including an input interface for receiving said transmitted measured cell currents, determining if plurality of cells are electrically balanced a cell; and an output interface for transmitting signals to control said common module controllers based on said measured currents, wherein said common control logic operates over a time period covering charge phases and idle phases. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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11. A control arrangement for a plurality of cells connected in series comprising:
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a plurality of measurement circuits each associated with one of said plurality of cells for measuring said one cell'"'"'s current; a plurality of bypass circuits each connected in parallel to one of said plurality of cells providing said one cell with a particular state of charge; a plurality of controllers each for controlling one of said plurality of bypass circuits and measurement circuits based on received control signals; and a common control logic including an input interface for receiving said measured cell currents, a processor for determining if the plurality of cells are electrically balanced; and
an output interface for transmitting signals to control said controllers based on said measured cell currents, wherein said common control logic operates over a time period covering charge phases and idle phases. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A control arrangement for a battery storage system including a plurality of cells connected in series comprising:
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a plurality of common modules, each common module including a measurement circuit measuring a cell current; a bypass circuit connected in parallel to one of the plurality of cells providing the cell with a particular state of charge; a controller controlling said bypass circuit and said measurement circuit based on received control signals; a measurement transducer for receiving measurement indications from said measurement circuits, converting them, and transmitting them; a common control logic including an input interface for receiving said transmitted measured cell currents, determining if plurality of cells are electrically balanced a cell; and an output interface for transmitting signals to control said common module controllers based on said measured currents, wherein said plurality of common module controllers are connected in serial communication with each other, said common module controllers including a first controller connected to said common control logic output interface for receiving said control pulses addressed to said first controller and forwarding control pulses addressed to other controllers.
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20. A control arrangement for a plurality of cells connected in series comprising:
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a plurality of measurement circuits each associated with one of said plurality of cells for measuring said one cell'"'"'s current; a plurality of bypass circuits each connected in parallel to one of said plurality of cells providing said one cell with a particular state of charge; a plurality of controllers each for controlling one of said plurality of bypass circuits and measurement circuits based on received control signals; and a common control logic including an input interface for receiving said measured cell currents, a processor for determining if the plurality of cells are electrically balanced; and
an output interface for transmitting signals to control said controllers based on said measured cell currents, whereinsaid plurality of common module controllers are connected in serial communication with each other, said common module controllers including a first controller connected to said common control logic output interface for receiving said control pulses addressed to said first controller and forwarding control pulses addressed to other controllers.
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Specification