Patent ID: 9112204
Filing Date: 2015-08-18
Classification: H01M,Y02E

Abstract:
1. A pack case for battery packs in which a battery cell array comprising two or more battery cells arranged in a lateral direction and a protection circuit module (PCM) comprising a protection circuit to control an operation of the battery pack are mounted, the pack case comprising: a lower case, on which the battery cell array and the protection circuit module are mounted; and an upper case disposed above the lower case so that the upper case covers the lower case to fix the battery cell array and the protection circuit module in place, wherein the lower case is partitioned into a battery cell mounting part, on which the battery cells are mounted, and a protection circuit module mounting part, on which the protection circuit module is mounted, wherein the protection circuit module mounting part is provided with an external input and output terminal mounting part, in which an external input and output terminal to input electric current to the battery pack, to output electric current from the battery pack, and to transmit and receive information to and from the battery pack is mounted, wherein an external input and output terminal opening having a size corresponding to the external input and output terminal is formed at a portion of a front of the upper case so that the external input and output terminal is exposed upward, a partition wall is formed at an interface between the battery cell mounting part and the protection circuit module mounting part, and openings, through which electrode terminals of the battery cells are exposed toward the protection circuit module, are formed at portions of the partition wall corresponding to electrical connection regions between the electrode terminals of the battery cells and the protection circuit module, wherein the protection circuit module mounting part comprises a support part to support the electrical connection region between each of the electrode terminals of the battery cells and the protection circuit module, wherein the support part is formed on the lower case in the shape of an upward protrusion, and wherein the support part is formed in the shape of a cross type protrusion, a straight protrusion, two parallel protrusions, or a cylindrical boss type protrusion.