| CPC H02J 7/0024 (2013.01) [H01M 10/441 (2013.01); H01M 10/482 (2013.01); H02J 7/0013 (2013.01); H02J 7/0016 (2013.01); H02J 7/0019 (2013.01)] | 19 Claims |

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1. A device for storing electrical energy, comprising a plurality of switched elementary cells included inside a storage pack, a master block and a supply block supplying the storage pack and the master block with a DC voltage, wherein the storage pack is subdivided into a plurality of storage blocks, each storage block including some of the plurality of switched elementary cells and a logic sub-block for controlling each switched elementary cell of said storage block, each switched elementary cell comprising at least one elementary cell and at least one switch, wherein each storage block also comprises at least one connection sub-block for connection to a bus, each connection sub-block including an electronic switch comprising two positions, a so-called connected position in which the electronic switch is open so that the storage block supplies a voltage to the bus and a so-called short-circuit position in which the electronic switch is closed, and the device further comprises a power supply circuit connecting a storage block to the master block in order to supply a voltage to said master block.
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