Bus bar module

A bus bar module, comprising:

• a first bus bar having a first hole in a planar region thereof and made of an electrically conductive material;
• a second bus bar opposed to the first bus bar, having a second hole in a planar region thereof and at a position corresponding to the first hole, and made of an electrically conductive material;
• a spacer made of an insulating material, which is sandwiched between the first bus bar and the second bus bar, and in which a third hole is provided so as to overlap with the first hole and the second hole, and
• a resin covering the first bus bar, the second bus bar and the spacer;
• wherein a first through-hole that is established by the first hole, the second hole and the third hole, is filled with a portion of the resin,
• wherein the spacer is provided with a first counterbore portion at a first circumferential edge portion around the third hole such that the first counterbore portion overlaps with a circumferential edge portion of the first bus bar around the first hole, and
• wherein the spacer is provided with a second counterbore portion at a second circumferential edge portion around the third hole such that the second counterbore portion overlaps with a circumferential edge portion of the second bus bar around the second hole.

A bus bar module, comprising:

• a first bus bar having a first hole in a planar region thereof and made of an electrically conductive material;
• a second bus bar opposed to the first bus bar, having a second hole in a planar region thereof and at a position corresponding to the first hole, and made of an electrically conductive material;
• a spacer made of an insulating material, which is sandwiched between the first bus bar and the second bus bar, and in which a third hole is provided so as to overlap with the first hole and the second hole;
• and
• a resin covering the first bus bar, the second bus bar and the spacer,
• wherein a first through-hole that is established by the first hole, the second hole and the third hole, is filled with a portion of the resin,
• wherein the spacer is provided with a first counterbore portion at a first circumferential edge portion around the third hole such that the first counterbore portion overlaps with a circumferential edge portion of the first bus bar around the first hole, and
• wherein a thickness of the first bus bar is equal to a thickness of the second bus bar, and a thickness of a portion of the resin located on the first bus bar is equal to a thickness of a portion of the resin located on the second bus bar.