An energy store floor assembly for an electrically driven motor vehicle includes an electrical energy store device, which is accommodated in a multi-part store housing and is situated on the underside of a vehicle floor of the energy store floor assembly. To create an energy store floor assembly which can be constructed in a more simple and lightweight manner, at least one longitudinal support is arranged inside the store housing of the energy store device and is connected at least at one end at least indirectly to a motor vehicle support component situated in the region of the front end.

An energy store floor assembly for an electrically driven motor vehicle includes an electrical energy store device, which is accommodated in a multi-part store housing and is situated on the underside of a vehicle floor of the energy store floor assembly. To create an energy store floor assembly which can be constructed in a more simple and lightweight manner, at least one longitudinal support is arranged inside the store housing of the energy store device and is connected at least at one end at least indirectly to a motor vehicle support component situated in the region of the front end.

A secondary battery with favorable cycle performance is provided. Alternatively, a secondary battery with higher capacity is provided. A positive electrode active material layer including a first graphene layer, a second graphene layer, and a positive electrode active material. The first graphene layer includes a first region covering the positive electrode active material. The second graphene layer includes a second region covering the positive electrode active material and a third region overlapping with the first region. The first region includes a plane positioned between the positive electrode active material and the third region and formed of arranged six-membered carbon rings. The positive electrode active material includes a fourth region with a layered rock-salt structure. A lithium layer with a layered rock-salt structure included in the fourth region is substantially perpendicular to the plane formed of six-membered carbon rings and included in the second region.

A secondary battery with favorable cycle performance is provided. Alternatively, a secondary battery with higher capacity is provided. A positive electrode active material layer including a first graphene layer, a second graphene layer, and a positive electrode active material. The first graphene layer includes a first region covering the positive electrode active material. The second graphene layer includes a second region covering the positive electrode active material and a third region overlapping with the first region. The first region includes a plane positioned between the positive electrode active material and the third region and formed of arranged six-membered carbon rings. The positive electrode active material includes a fourth region with a layered rock-salt structure. A lithium layer with a layered rock-salt structure included in the fourth region is substantially perpendicular to the plane formed of six-membered carbon rings and included in the second region.

An electronic device includes: an exterior case that has a first case and a second case engaged with each other; a first lead wire and a second lead wire extended from the inside of the exterior case; a first grommet through which the first lead wire is penetrated; and a second grommet through which the second lead wire is penetrated, where the first grommet is inserted in a first notch formed in the first case, the second grommet is inserted in a second notch formed at a position that substantially faces the first notch in the second case, and a continuous O-ring is interposed between the first case and the second case and between the first grommet and the second grommet.

An electronic device includes: an exterior case that has a first case and a second case engaged with each other; a first lead wire and a second lead wire extended from the inside of the exterior case; a first grommet through which the first lead wire is penetrated; and a second grommet through which the second lead wire is penetrated, where the first grommet is inserted in a first notch formed in the first case, the second grommet is inserted in a second notch formed at a position that substantially faces the first notch in the second case, and a continuous O-ring is interposed between the first case and the second case and between the first grommet and the second grommet.

Provided is a battery pack including a pair of output terminals, a control unit, and a plurality of battery units, where each of the plurality of battery units includes a plurality of battery blocks connected in series, a positive electrode terminal, and a negative electrode terminal, the battery block includes one battery or a plurality of batteries connected in parallel, a fuse is connected between at least one output terminal of the pair of output terminals and a positive electrode terminal or a negative electrode terminal corresponding to the one output terminal, and the fuse is allowed to be fused by the control unit.

Provided is a battery pack including a pair of output terminals, a control unit, and a plurality of battery units, where each of the plurality of battery units includes a plurality of battery blocks connected in series, a positive electrode terminal, and a negative electrode terminal, the battery block includes one battery or a plurality of batteries connected in parallel, a fuse is connected between at least one output terminal of the pair of output terminals and a positive electrode terminal or a negative electrode terminal corresponding to the one output terminal, and the fuse is allowed to be fused by the control unit.

In a battery apparatus, a battery pack includes a plurality of battery modules and a bus-bar connecting two battery modules among the plurality of battery modules. A wire connects the battery pack and the switch for controlling current supply of the battery pack. A voltage measuring circuit measures a voltage of the bus-bar, a voltage of the battery pack, and voltages of the plurality of battery modules. A processor diagnoses a connection status of the bus-bar and a connection status of the wire based on a current of the battery pack, the voltage of the bus-bar, the voltage of the battery pack, and the voltages of the plurality of battery modules.

A battery module of the present disclosure includes a battery case, at least one sulfide-based battery disposed inside the battery case, and at least one halogen-based battery disposed inside the battery case. A vehicle of the present disclosure includes the battery module and an electric motor configured to be driven by electric power supplied from the battery module. A method of manufacturing a battery module of the present disclosure includes disposing at least one sulfide-based battery inside the battery case and disposing at least one halogen-based battery inside the battery case.