Traction battery pack cell stack removal method and battery pack assembly
A battery pack cell stack removal method includes compressing a cell stack with an enclosure structure when the cell stack is received within a cell-receiving opening of the enclosure structure, and pulling a cell stack removal strap to withdrawn the cell stack from the cell-receiving opening of the enclosure structure.
1 . A battery pack cell stack removal method, comprising:
compressing a cell stack with an enclosure structure when the cell stack is received within a cell-receiving opening of the enclosure structure; and
pulling a cell stack removal strap to withdraw the cell stack from the cell-receiving opening of the enclosure structure.
2 . The method of claim 1 , wherein the cell stack is a first cell stack, and further comprising compressing a second cell stack with the enclosure structure when the first cell stack and the second cell stack are both received within the cell-receiving opening of the enclosure structure.
3 . The method of claim 1 , wherein, after the compressing and prior to the pulling, the cell stack removal strap is sandwiched between the cell stack and the enclosure structure.
4 . The method of claim 1 , wherein the enclosure structure includes a plurality of side walls extending from a floor, the cell stack removal strap extending from a position against a first side wall on a first side of the enclosure structure to a second side wall on an opposite, second side of the enclosure structure.
5 . The method of claim 4 , wherein the cell stack removal strap extends along the floor between the cell stack and the floor.
6 . The method of claim 4 , wherein the cell stack includes a side that interfaces with the floor of the enclosure structure, the cell stack removal strap having a hoop section that contacts a perimeter of the side.
7 . The method of claim 6 , wherein a portion of the hoop section extends past the perimeter of the side after the compressing and prior to the pulling.
8 . The method of claim 1 , wherein a plurality of cells of the cell stack are compressed along an axis of the cell stack, wherein the pulling withdraws the cell stack from the enclosure structure in a direction that is perpendicular to the axis of the cell stack.
9 . The method of claim 8 , wherein the enclosure structure directly contacts opposite axially facing sides of the cell stack when compressing the cell stack.
10 . The method of claim 1 , wherein the enclosure structure is an enclosure tray.
11 . The method of claim 1 , wherein the compressing of the cell stack is along an axis, wherein the pulling moves the cell stack relative to the enclosure structure in a direction that is perpendicular to the axis.
12 . The method of claim 1 , further comprising inserting the cell stack and the cell stack removal strap together into the cell-receiving opening.
13 . The method of claim 1 , wherein the enclosure structure circumferentially surrounds the cell stack during the compressing.
14 . The method of claim 1 , wherein the cell stack removal strap has a basket configuration with a hoop section and arms projecting outward from the hoop section.
15 . A battery pack assembly, comprising:
an enclosure structure having a cell-receiving opening;
a cell stack that is within the cell-receiving opening and is compressed by the enclosure structure; and
a cell stack removal strap, at least a portion of the cell stack removal strap sandwiched between the enclosure structure and the cell stack.
16 . The battery pack assembly of claim 15 , wherein the cell stack removal strap is sandwiched between a first wall of the enclosure structure and the cell stack, a floor of the enclosure structure and the cell stack, and an opposite, second wall of the enclosure structure and the cell stack.
17 . The battery pack assembly of claim 15 , wherein the cell stack removal strap is a polyester fabric material.
18 . The battery pack assembly of claim 15 , wherein the cell stack is a first cell stack and cell stack removal strap is a first cell stack removal strap, and further comprising a second cell stack and a second cell stack removal strap within the cell-receiving opening of the enclosure structure, at least a portion of the second cell stack removal strap sandwiched between the enclosure structure and the second cell stack.
19 . The battery pack assembly of claim 15 , wherein the enclosure structure circumferentially surrounds the cell stack when compressing the cell stack.
20 . A battery pack assembly, comprising:
an enclosure structure having a cell-receiving opening;
a cell stack that is within the cell-receiving opening and is compressed by the enclosure structure; and
a cell stack removal strap, at least a portion of the cell stack removal strap sandwiched between the enclosure structure and the cell stack,
wherein the cell stack removal strap has a basket configuration with a hoop section and arms projecting outward from the hoop section.