Battery module
View Patent ↗A battery module includes: a case body for storing a plurality of cells each having an exhaust gas valve; an exhaust passage for releasing, to the outside of the case body, the high-pressure and high-temperature exhaust gas having come from the cells; and a flow route changing unit that is disposed in the exhaust passage, has a hole for passing the exhaust gas, and elongates the flow route of the exhaust gas from the upstream side to the downstream side of the exhaust passage by changing the flow direction of the exhaust gas a plurality of times in a zigzag manner along at least one of the width and height directions of the exhaust passage. The flow route changing unit includes a plurality of flat plates each having a hole for passing the exhaust gas.
1. A battery module comprising:
a case body for storing a plurality of cells each having an exhaust gas valve;
an exhaust passage for releasing an exhaust gas to an outside of the case body, the exhaust gas having come from the plurality of cells; and
a flow route changing unit disposed in the exhaust passage, the flow route changing unit being used for elongating a flow route of the exhaust gas from an upstream side to a downstream side of the exhaust passage by changing a flow direction of the exhaust gas a plurality of times in a zigzag manner along at least one direction of a width direction and a height direction of the exhaust passage,
wherein the flow route changing unit includes a plurality of plate portions, each of the plurality of plate portions includes a plurality of paths for passing the exhaust gas.
2. The battery module according to claim 1 , wherein
the plurality of plate portions are a plurality of flat plates and the plurality of paths comprise holes for passing the exhaust gas, the plurality of flat plates being arranged from the upstream side to the downstream side of the exhaust passage, and
positions of the holes in adjacent flat plates, of the plurality of flat plates, are shifted alternately in opposite directions along the width direction or the height direction with respect to a center line of the exhaust passage.
3. The battery module according to claim 1 , wherein
the plurality of plate portions are a plurality of flat plates, and the plurality of paths comprise holes for passing the exhaust gas, the plurality of flat plates being inclined and arranged from the upstream side to the downstream side of the exhaust passage, and
pointing directions of the holes in adjacent flat plates, of the plurality of flat plates, are opposite from each other along the width direction or the height direction with respect to a center line of the exhaust passage.
4. The battery module according to claim 3 , wherein
the flow route changing unit includes an integrated flat plate portion including the plurality of flat plates inclined with respect to each other, the plurality of flat plates being formed by folding one flat board.
5. The battery module according to claim 1 , wherein
each of the plurality of paths for passing the exhaust gas in the flow route changing unit includes an oblique slit hole inclined with respect to the height direction.
6. The battery module according to claim 1 , wherein
the plurality of plate portions are a plurality of flat plates, the paths includes holes for passing the exhaust gas, the plurality of flat plates being arranged from the upstream side to the downstream side of the exhaust passage, the holes each including an oblique slit hole inclined with respect to the height direction, and
inclined directions of the oblique slit holes in adjacent flat plates, of the plurality of flat plates, are opposite from each other along the height direction.
7. The battery module according to claim 2 , wherein
in the flow route changing unit, a dimension of the hole in the flat plate on the upstream side, of the plurality of flat plates, is larger than a dimension of the hole in the flat plate on the downstream side, of the plurality of flat plates.
8. The battery module according to claim 3 , wherein
in the flow route changing unit, a dimension of the hole in the flat plate on the upstream side, of the plurality of flat plates, is larger than a dimension of the hole in the flat plate on the downstream side, of the plurality of flat plates.
9. The battery module according to claim 4 , wherein
in the flow route changing unit, a dimension of the hole in the flat plate on the upstream side, of the plurality of flat plates, is larger than a dimension of the hole in the flat plate on the downstream side, of the plurality of flat plates.
10. The battery module according to claim 5 , wherein
in the flow route changing unit, a dimension of the hole in the flat plate on the upstream side, of the plurality of flat plates, is larger than a dimension of the hole in the flat plate on the downstream side, of the plurality of flat plates.
11. The battery module according to claim 6 , wherein
in the flow route changing unit, a dimension of the hole in the flat plate on the upstream side, of the plurality of flat plates, is larger than a dimension of the hole in the flat plate on the downstream side, of the plurality of flat plates.