Method and system for monitoring the status of battery cells
First Claim
1. A method for monitoring the status of a plurality of connected battery cells in a battery pack, the method comprising:
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arranging the battery cells in at least two groups of cells;
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connecting each one of the groups of cells to a corresponding sensor forming part of a sensor unit; and
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providing a measurement of at least one parameter indicative of the state of operation of the battery pack by means of the sensor unit;
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arranging the groups of cells in a manner so that;
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at least two of the groups comprise two or more cells, and—
at least two of the groups overlap so that a cell forms part of the overlapping groups; and
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connecting each sensor of the sensor unit to each one of the corresponding groups for estimating a measurement of the parameter for each one of the groups; and
wherein—
the number of groups is less than the number of cells.
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Abstract
A method for monitoring the status of a plurality of connected battery cells in a battery pack includes: arranging the battery cells in at least two groups of cells; connecting the groups of cells to a sensor unit; and providing a measurement of at least one parameter indicative of the state of operation of the battery pack by the sensor unit. The method further includes arranging the groups of cells in a manner so that at least two of the groups include two or more cells and at least two of the groups overlap so that a cell forms part of the overlapping groups; and connecting the sensor unit to the groups; and wherein the number of groups is less than the number of cells.
23 Citations
12 Claims
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1. A method for monitoring the status of a plurality of connected battery cells in a battery pack, the method comprising:
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arranging the battery cells in at least two groups of cells;
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connecting each one of the groups of cells to a corresponding sensor forming part of a sensor unit; and
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providing a measurement of at least one parameter indicative of the state of operation of the battery pack by means of the sensor unit;
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arranging the groups of cells in a manner so that;
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at least two of the groups comprise two or more cells, and—
at least two of the groups overlap so that a cell forms part of the overlapping groups; and
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connecting each sensor of the sensor unit to each one of the corresponding groups for estimating a measurement of the parameter for each one of the groups; and
wherein—
the number of groups is less than the number of cells. - View Dependent Claims (2, 3, 4, 5, 10, 11, 12)
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6. A battery management system for monitoring the status of a plurality of connected battery cells in a battery pack, comprising:
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a plurality of battery cells which are arranged in at least two groups of cells;
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a sensor unit connected to the groups so that each one of the groups is connected to a corresponding sensor forming part of the sensor unit;
the sensor unit being configured for providing a measurement of at least one, parameter indicative of the state of operation of the battery pack; and
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a control unit connected to the sensor unit;
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an arrangement of the groups of cells wherein;
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at least two of the groups comprise two or more cells, and—
at least two of the groups overlap so that a cell forms part of the overlapping groups; and
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a connection between the each sensor of the sensor unit and each one of the corresponding groups for estimating a measurement of the parameter for each one of the groups;
wherein—
the number of groups is less than the number of cells. - View Dependent Claims (7, 8, 9)
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Specification