Battery unit
A battery unit with a stack of flat cells, with cooling sheets between adjacent cells. The cooling sheets at an upper end thereof have at least one bended edge, with the edges of adjacent cooling sheets being aligned spatially in the same direction. The bended edges of adjacent cooling sheets partially overlap in order to form die gaps which are also aligned spatially in the same direction.
1. A battery unit comprising:
a plurality of cells arranged in a stacked order; and
a cooling sheet provided between adjacent cells, the cooling sheet having at least one edge which is bent at a predetermined angle and configured such that the at least one edge of adjacent cooling sheets are aligned spatially in the same direction and partially overlap in order to form a gaps in the direction of the alignment.
2. The battery unit of claim 1 , wherein the cooling sheet is composed of a metal material.
3. The battery unit of claim 1 , wherein the predetermined angle is greater than or equal to 45 degrees.
4. The battery unit of claim 3 , wherein the predetermined angle is less than 90 degrees.
5. The battery unit of claim 1 , wherein the predetermined angle is in a range of between 70 degrees and 85 degrees.
6. A battery unit comprising:
a first plurality of cells arranged in a stacked order;
a second plurality of cells arranged in a stacked order and opposed to the first plurality of cells;
a first cooling sheet provided between adjacent ones of the first plurality of cells, the first cooling sheet having at least one first edge which is bent at a first predetermined angle and configured such that the at least one first edge of adjacent first cooling sheets are aligned spatially in the same direction and partially overlap in order to form a first gap in the direction of the alignment; and
a second cooling sheet provided between adjacent ones of the second plurality of cells, the second cooling sheet having at least one second edge which is bent at a second predetermined angle and configured such that the at least one second edge of adjacent second cooling sheets are aligned spatially in the same direction and partially overlap in order to form a second gap in the direction of the alignment,
wherein the at least one first edge and the at least one second edge are bent in the same direction.
7. The battery unit of claim 6 , wherein the first cooling sheet is composed of a metal material.
8. The battery unit of claim 6 , wherein the first cooling sheet is composed of a metal material.
9. The battery unit of claim 6 , wherein the first cooling sheet and the second cooling sheet are composed of the same material.
10. The battery unit of claim 9 , wherein the first cooling sheet and the second cooling sheet are composed of a metal material.
11. The battery unit of claim 1 , wherein:
the first predetermined angle is greater than or equal to 45 degrees; and
the second predetermined angle is greater than or equal to 45 degrees.
12. The battery unit of claim 11 , wherein the first predetermined angle and the second predetermined angle is less than 90 degrees.
13. The battery unit of claim 6 , wherein:
the first predetermined angle is in a range of between 70 degrees and 85 degrees; and
the second predetermined angle is in a range of between 70 degrees and 85 degrees.
14. The battery unit of claim 6 , wherein the first predetermined angle is the same as the second predetermined angle.
15. A battery unit comprising:
a plurality of cells spaced from each other; and
a cooling sheet provided in the space between adjacent cells, the cooling sheet having a first section at a base portion thereof, a second area at an distal portion thereof, and a third section between the first section and the second section,
wherein:
the second section is bent at a predetermined angle relative to the first section such that the second section of adjacent cooling sheets are aligned spatially in the same direction and partially overlap to define a flow path; and
the third section is curled relative to the first section to thereby prevent a cell adjacent to one of cooling sheets from slipping towards the second section.
16. The battery unit of claim 15 , wherein the cooling sheet is composed of a metal material.
17. The battery unit of claim 15 , wherein the predetermined angle is greater than or equal to 45 degrees.
18. The battery unit of claim 17 , wherein the predetermined angle is less than 90 degrees.
19. The battery unit of claim 15 , wherein the predetermined angle is in a range of between 70 degrees and 85 degrees.
20. The battery unit of claim 15 , wherein the flow path directs at least gases away from the cells.