Spacer for battery pack and battery pack comprising the same

摘要

Disclosed herein is a spacer used in a battery pack having a plurality of battery cells mounted in a pack case, wherein the spacer is configured to have a top shape corresponding to the inner shape of the pack case in vertical section and a bottom shape corresponding to the outer circumferential shape of the battery cells in vertical section so that the spacer can be mounted in a space defined between the battery cells and the pack case, grooves, in which electrical connection members are mounted, are formed at the top of the spacer, and the spacer includes at least one temperature detection member mounting part including a horizontal opening open in one direction or in opposite directions and a vertical opening communicating with the horizontal opening so that a temperature detection member is inserted from one side of the spacer and mounted in a space defined between the battery cells. In the spacer, the temperature detection member is inserted into the horizontal opening from one side of the spacer so that the temperature detection member can be fixed between the battery cells and the spacer, and therefore, a process of bonding the temperature detection member is omitted. Also, the electrical connection members for electrical connection between the battery cells and between the battery cells and a protection circuit member are mounted in the grooves so that the electrical connection members are fixed in an insulated state, thereby preventing the occurrence of a short circuit due to vibration or impact and simplifying an assembly process.

主权项

1. A battery pack, comprising:
a pack case; battery cells in the pack case; and a spacer mounted between the battery cells and the pack case, wherein the spacer is configured to have a top shape corresponding to the inner shape of the pack case in vertical section and a bottom shape corresponding to the outer circumferential shape of the battery cells in vertical section so that the spacer can be mounted in a space defined between the battery cells and the pack case, the top shape is flat, grooves, in which electrical connection members for directly connecting the battery cells to each other are mounted, are formed at the top of the spacer, the spacer comprises at least one temperature detection member mounting part comprising a horizontal opening open in one direction or in opposite directions and a vertical opening communicating with the horizontal opening so that a temperature detection member is inserted from one side of the spacer and mounted in a space defined between the battery cells from one side of the spacer, the length of the spacer is greater than that of each of the battery cells, a through hole, through which each of the electrical connection members is inserted, is formed at a position corresponding to each electrode terminal connection region between the battery cells arranged in the longitudinal direction thereof, the grooves correspond to a width of each of the electrical connection members, at least one groove of the grooves of the spacer is formed in the longitudinal direction of the battery cells, at least one groove of the grooves of the spacer is a branch groove that diverges in the lateral direction of the battery cells from the longitudinally formed groove, in which each of the electrical connection members is bent so as to correspond to the groove and the branch groove, the battery cells are arranged in the longitudinal direction and in the lateral direction, and a protection circuit member is mounted to the outside of one lateral side of an assembly of the battery cells arranged in the longitudinal direction.