Battery module and method for bracing a battery module
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsRobert Loch, Christoph Warkotsch
Life of this patent
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Abstract
A battery module stores electrical energy. The battery module includes one or more battery cells disposed between two compression plates so as to be next to one another along a transverse axis of the battery module. The battery module is configured such that a spacing between the two compression plates is variable within a spacing range so that a variation in a spatial extent of the one or more battery cells exists along the transverse axis. The two compression plates apply a compressive force to the one or more battery cells within the entire spacing range.
Claims16
A battery module for storing electric energy, comprising:
- one or more battery cells disposed between two compression plates so as to be next to one another along a transverse axis of the battery module, wherein
- the battery module is configured such that:
- a spacing between the two compression plates is variable within a spacing range so that a variation in a spatial extent of the one or more battery cells exists along the transverse axis;
- and
- the two compression plates apply a compressive force to the one or more battery cells within the entire spacing range,
- the one or more battery cells in a discharged state has a minimum overall extent along the transverse axis,
- the one or more battery cells in a charged state have a maximum overall extent along the transverse axis,
- the maximum overall extent is in particular between 5% and 15% above the minimum overall extent, and
- the spacing range toward a bottom is delimited by the minimum overall extent, and toward a top is delimited by the maximum overall extent.
A method for bracing a battery module comprising one or more battery cells, the method comprising:
- disposing the one or more battery cells between two compression plates so as to be next to one another along a transverse axis of the battery module;
- configuring the battery module such that a spacing between the two compression plates is variable within a spacing range so that a variation in a spatial extent of the one or more battery cells exists along the transverse axis;
- applying, by the two compression plates, a compressive force to the one or more battery cells within the entire spacing range;
- establishing that the one or more battery cells in a discharged state have a minimum overall extent along the transverse axis;
- establishing that the one or more battery cells in a charged state have a maximum overall extent along the transverse axis;
- setting the maximum overall extent to be between 5 percent and 15 percent above the minimum overall extent;
- and
- delimiting the spacing range toward a bottom by the minimum overall extent and toward a top by the maximum overall extent.
A battery module for storing electric energy, comprising:
- one or more battery cells disposed between two compression plates so as to be next to one another along a transverse axis of the battery module, wherein
- the battery module is configured such that:
- a spacing between the two compression plates is variable within a spacing range so that a variation in a spatial extent of the one or more battery cells exists along the transverse axis,
- the two compression plates apply a compressive force to the one or more battery cells within the entire spacing range;
- and
- a compression element configured to push and/or pull the first compression plate of the two compression plates toward the second compression plate of the two compression plates, wherein
- the compression element comprises a rubber tensioning strap or a serpentine spring configured to pull the first compression plate toward the second compression plate.
Dependencies are inferred from the claim text.