Electricity storage device and railroad car
According to one embodiment, an electricity storage device includes a first box, a second box, a storage battery, and a flow path. The second box includes a side plate and is housed in the first box. The storage battery is disposed in the second box while being connected to the side plate. The flow path is configured to include the side plate of the second box inside the first box and outside the second box and vertically penetrates the first box.
1. An electricity storage device, comprising:
a first box;
a second box comprising a side plate and housed in the first box;
a storage battery disposed in the second box while being connected to the side plate;
a flow path configured to comprise the side plate of the second box inside the first box and outside the second box and vertically penetrating the first box;
a partition plate provided in the first box to constitute a part of the flow path and including a first opening formed therein; and
a sealing member fixed to one of an edge portion of the first opening in the partition plate and an edge portion of the second opening in the second box, wherein
the second box includes a second opening formed therein,
the second box is detachably attached to the first box,
the first opening of the partition plate communicates with the second opening of the second box, and
the other of the edge portion of the first opening in the partition plate and the edge portion of the second opening in the second box and the sealing member are hermetically connected.
2. The electricity storage device according to claim 1 , further comprising a protrusion protruding from the side plate toward an inside of the flow path.
3. The electricity storage device according to claim 1 , wherein
an opening is formed in the side plate; and
the storage battery is exposed in the flow path through the opening.
4. The electricity storage device according to claim 1 , further comprising:
a first connector provided in the first box; and
a second connector provided in the second box to be electrically connected to the storage battery and detachably attached to the first connector, wherein
the second connector is attached to and detached from the first connector in accordance with attachment and detachment of the second box with respect to the first box.
5. The electricity storage device according to claim 1 , wherein
the second box has a through-hole formed therein,
the electricity storage device further comprising a cover which removably covers the through-hole with respect to the second box.
6. The electricity storage device according to claim 1 , further comprising a ventilator which allows gases inside and outside the second box to flow back and forth.
7. A railroad car comprising the electricity storage device according to claim 1 .