POWER STORAGE DEVICE
A power storage device having both replaceability of a battery module and excellent vibration resistance/impact resistance, includes: a bottom plate having a plurality of lower guide members; a top plate provided above the bottom plate and having a plurality of upper guide members facing the lower guide members; a first side plate and a second side plate provided between the bottom plate and the top plate so as to face each other; a back surface plate provided between the first and second side plates and having a plurality of connectors; a battery module inserted between the lower and upper guide members and having connectors to be fitted to the connectors of the back surface plate; and a pressing plate provided between and fixed to the first and second side plates so as to press the battery module.
1 . A power storage device characterized by comprising:
a bottom plate having a plurality of lower guide members;
a top plate provided above the bottom plate and having a plurality of upper guide members facing the lower guide members;
a first side plate and a second side plate provided between the bottom plate and the top plate so as to face each other;
a back surface plate provided between the first and second side plates and having a plurality of connectors;
a battery module inserted between the lower and upper guide members and having connectors to be fitted to the connectors of the back surface plate; and
a pressing plate provided between and fixed to the first and second side plates so as to press the battery module.
2 . The power storage device according to claim 1 , characterized in that
the pressing plate does not contact the bottom plate.
3 . The power storage device according to claim 1 , characterized in that
the pressing plate does not contact the top plate.
4 . The power storage device according to claim 1 , characterized in that
a virtual plane positioned in the middle between the bottom and top plates crosses the pressing plate.
5 . The power storage device according to claim 1 , characterized in that
the pressing plate is made of a stainless steel.
6 . The power storage device according to claim 1 , characterized in that
the pressing plate is fixed to the first and second side plates by bolts and nuts.
7 . The power storage device according to claim 1 , characterized in that
the bottom plate has a ventilation opening.
8 . The power storage device according to claim 1 , characterized in that
the top plate has a ventilation opening.
9 . The power storage device according to claim 1 , characterized in that
the first and second side plates each have a ventilation opening.
10 . The power storage device according to claim 1 , characterized in that
the battery module includes a plurality of unit batteries.
11 . The power storage device according to claim 10 , characterized in that the unit battery is a lithium ion secondary battery having an electrode laminate obtained by laminating positive and negative electrodes through separators and a laminate film exterior material housing the electrode laminate and electrolyte.