Battery pack and device including the same
A battery pack includes a pack housing to which a plurality of battery modules are mounted; a heat transfer member positioned on the pack housing; and a cooling member positioned in the lower part of the pack housing, wherein the battery module comprises a battery cell stack in which a plurality of battery cells are stacked, and the lower surface of the battery module is opened, and wherein the lower surface of the battery cell stack and the heat transfer member come into contact with each other.
1 . A battery pack comprising:
a pack housing to which a plurality of battery modules are mounted;
a heat transfer member positioned on the pack housing; and
a cooling member positioned in the lower part of the pack housing,
wherein each battery module of the plurality of battery modules comprises a battery cell stack in which a plurality of battery cells are stacked, and a lower surface of the battery module is opened,
wherein the lower surface of the battery cell stack and the heat transfer member come into direct contact with each other,
wherein each battery module of the plurality of battery modules comprises a module frame for housing the battery cell stack,
wherein the module frame includes a first side part and a second side part, and
wherein the first side part and the second side part are positioned on the heat transfer member.
2 . The battery pack according to claim 1 , wherein:
lower part of the module frame is opened.
3 . The battery pack according to claim 2 , wherein:
the heat transfer member comes into contact with the first and second side parts of the module frame together with the lower surface of the battery cell stack.
4 . The battery pack according to claim 2 , wherein:
the module frame is a U-shaped frame including an upper part and the first and second side parts.
5 . The battery pack according to claim 2 , wherein:
a mounting part is formed on at least one of the first side surface and the second side surface of the module frame.
6 . The battery pack according to claim 5 , wherein:
a fixing member is inserted into the mounting part, and
the fixing member is extended from the mounting part to a lower part of the pack housing.
7 . The battery pack according to claim 2 , wherein:
the surfaces of the battery cell stack are attached to an inside surface of the module frame.
8 . The battery pack according to claim 7 , wherein:
a first adhesive layer is positioned between a pair of immediately adjacent battery cells in the battery cell stack.
9 . The battery pack according to claim 8 , wherein:
a second adhesive layer is positioned between one surface of the battery cell stack and the inside surface of the module frame.
10 . The battery pack according to claim 9 , wherein:
the first adhesive layer and the second adhesive layer are respectively composed of a tape, or a coating with an adhesive binder.
11 . The battery pack according to claim 1 , wherein:
the heat transfer member is composed of a heat transfer pad, or a coating with a thermal conductive resin.
12 . The battery pack according to claim 11 , wherein:
the heat transfer member is positioned between a lower surface of the battery module mounted to the pack housing and a lower part of the pack housing.
13 . The battery pack according to claim 1 , wherein:
the module frame is composed of a steel material.
14 . The battery pack according to claim 1 , wherein:
the cooling member is composed of a cooling plate or a heat sink.
15 . A device comprising the battery pack according to claim 1 .
16 . The battery pack according to claim 2 , further comprising a groove in a lower edge of an inner surface of the module frame, and
wherein the heat transfer member fits within the groove.