Battery system
A battery system includes a cell stack in which a plurality of battery cells are stacked; a module case accommodating the cell stack therein; and at least one blocking member interposed between the plurality of battery cells, wherein the blocking member is formed of a material that does not melt at 300° C. or less, and a cross-section of the blocking member is formed to have a shape in which a curve is repeated.
1 . A battery system comprising:
a cell stack in which a plurality of battery cells are stacked;
a module case accommodating the cell stack therein; and
at least one blocking member interposed between the plurality of battery cells,
wherein the at least one blocking member is formed of a material that does not melt at 300° C. or less, and
a cross-section of the at least one blocking member is formed to have a shape in which a curve is repeated,
wherein the at least one blocking member is elastically deformable and has a cross-section formed in a sine wave shape such that all bent portions have an obtuse angle.
2 . The battery system of claim 1 , wherein the at least one blocking member is elastically deformed by pressure applied by a battery cell of the plurality of battery cells, when the battery cell expands, to protrude at least a portion of the at least one blocking member out of the cell stack.
3 . The battery system of claim 2 , wherein the module case comprises an upper plate disposed on the cell stack,
wherein the upper plate has at least one insertion groove into which a portion protruding out of the cell stack is inserted, when the at least one blocking member is elastically deformed.
4 . The battery system of claim 3 , wherein the insertion groove is formed to face the at least one blocking member, and one or more of the at least one blocking members are inserted into one insertion groove.
5 . The battery system of claim 1 , wherein a plurality of air insulation layers are provided between a battery cell of the plurality of battery cells and the at least one blocking member, facing each other.
6 . The battery system of claim 1 further comprising a heat transfer member disposed between the module case and the cell stack,
wherein at least a portion of the at least one blocking member is inserted into the heat transfer member.
7 . The battery system of claim 6 , wherein the heat transfer member is formed from at least one selected from the group consisting of thermal grease, a thermally conductive adhesive, and a heat dissipation pad.
8 . The battery system of claim 1 , wherein the at least one blocking member comprises mica.
9 . The battery system of claim 8 , wherein the at least one blocking member is formed by mixing a mica particle and a silicone resin.
10 . A battery system comprising:
a cell stack in which a plurality of battery cells are stacked;
a module case accommodating the cell stack therein; and
at least one blocking member interposed between the plurality of battery cells,
wherein the at least one blocking member is elastically deformed by pressure applied by a battery cell of the plurality of battery cells, when the battery cell expands, to protrude at least a portion of the at least one blocking member out of the cell stack,
wherein the module case comprises at least one insertion groove into which a portion of the at least one blocking member protruding outside of the cell stack is inserted.
11 . The battery system of claim 10 , wherein a cross-section of the at least one blocking member is formed to have a shape in which a curve is repeated.
12 . The battery system of claim 10 , wherein the at least one blocking member has a cross-section formed in a waveform shape.
13 . The battery system of claim 10 , wherein the at least one blocking member comprises mica.