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US 2007/0182377 A1Published application
Method and system for monitoring battery stacks
AssigneeSemiconductor Components Industries, LLC
InventorGeert Vandensande
Life of this patent
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AssigneeSemiconductor Components Industries, LLC
InventorGeert Vandensande
Estimating the term…
A monitoring system (14, 24, 34, 50) monitors voltage of a stack of batteries (10, 20, 30.) Each battery has a plurality of cells (13). A monitoring unit (14, 24, 34) is associated with each battery and measures voltage across a selected cell. A first monitoring unit and a second monitoring unit measure the same cell, e.g. cell Cn,1 of battery 10. The first and second measurements are used to calculate a correction factor which can be used to correct a set of measurements made by one of the monitoring units (14, 24). The monitoring units (14, 24, 34) are arranged in a chain, with adjacent units in the chain being connected by a communication interface in which data is transmitted as signalling voltage levels between interface units. The interface units (16, 25) of a pair of monitoring units (14, 24) use the same signalling voltage levels.
A monitoring system for monitoring voltages in a stack of batteries, each battery comprising a plurality of cells, the monitoring system comprising:
A method of monitoring voltages of a stack of batteries, each battery comprising a plurality of cells and having a plurality of monitoring units each associated with a battery, the method comprising:
A controller for use as part of a monitoring system for monitoring voltage in a stack of batteries, each battery comprising a plurality of cells, the monitoring system comprising monitoring units each associated with a battery and being operable to measure voltage across one or more selected cells, and wherein the controller comprises an interface to receive measurements from the monitoring units and control logic comprising:
A monitoring unit for use as part of a monitoring system for monitoring voltage in a stack of batteries, each battery comprising a plurality of cells, wherein the monitoring unit is associated with a battery and comprises an input stage having a set of selectable input lines which connect to terminals of the cells of the battery, the input stage further comprising an additional selectable input line which connects to a terminal of a cell in an adjacent battery and wherein the monitoring unit is operable to measure voltage across a selected cell, or group of cells, of the battery, or of the cell, or group of cells, of the adjacent battery by selection of the input lines.
A monitoring system for monitoring voltage in a plurality of batteries, each battery having a monitoring unit associated therewith and being operable to measure voltage across the battery, or one or more cells within the battery,
Dependencies are inferred from the claim text.