Battery pack and rechargeable vacuum cleaner
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Abstract
The invention provides a battery pack comprising an outer case, and a plurality of cylindrical lithium ion secondary batteries accommodated in the outer case in vertical N rows and lateral M rows (N rows≦M rows), with a gap between the secondary batteries, wherein the outer case has a draft port opened in a first wall facing an outer circumferential surface of the secondary batteries in the first vertical row, and an exhaust port opened in a second wall positioned at the opposite side of the first wall, in each secondary battery in the first vertical row and the second vertical row, a part of the outer circumferential surface, which is at a shorter distance from the first wall than any other parts, faces the draft port of the outer case.
28 Citations
33 Claims
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1-18. -18. (canceled)
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19. A rechargeable vacuum cleaner comprising a battery pack including an outer case, and a plurality of cylindrical lithium ion secondary batteries accommodated in the outer case in vertical N rows and lateral M rows (N rows≦
- M rows), with a gap between the secondary batteries,
wherein the outer case has a draft port opened in a first wall facing an outer circumferential surface of the secondary batteries in the first vertical row, and an exhaust port opened in a second wall positioned at the opposite side of the first wall, in each secondary battery in the first vertical row and the second vertical row, a part of the outer circumferential surface, which is at a shorter distance from the first wall than any other parts, faces the draft port of the outer case. - View Dependent Claims (20)
- M rows), with a gap between the secondary batteries,
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21. A rechargeable vacuum cleaner comprising a battery pack,
the battery pack comprising: -
an outer case including first and second walls, the first wall including a draft port portion, the second wall being located opposite to the first wall and including an exhaust port portion;
a first row of cylindrical lithium ion secondary batteries arranged in the outer case to face the first wall, and the first row of cylindrical lithium ion secondary batteries being spaced apart from each other; and
a second row of cylindrical lithium ion secondary batteries arranged adjacent to the first row of cylindrical lithium ion secondary batteries in the outer case, wherein;
parts of outer circumferential surfaces of the first row of cylindrical lithium ion secondary batteries, each of which is closer than any other part to the first wall, face the draft port portion of the first wall of the outer case; and
parts of outer circumferential surfaces of the second row of cylindrical lithium secondary batteries, each of which is closer than any other part to the first wall, face the draft port portion of the outer case through space defined by the first row of cylindrical lithium ion secondary batteries. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification