BATTERY PACK
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jan 9, 2014
app pub date -
Sep 7, 2011
filing date -
Mar 31, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In order to provide a highly-reliable battery back in which a laminate film of a unit battery does not break through a laminate film of an adjacent unit battery even under vibration, a battery pack includes a plurality of unit batteries connected in series. The unit batteries include: a positive-electrode and a negative-electrode pulled-out tabs; and a laminate casing member that is provided with a first end portion, from which the positive-electrode and negative-electrode pulled-out tabs are pulled out. A first fusion-bonding portion has a first fusion-welding length in a direction in which a tab is pulled out at a first end portions side. A second fusion-bonding portion has a second fusion-welding length that is shorter than the first fusion-welding length in a direction in which a tab is pulled out at a second end portions side. Chamfered portions are positioned at both corner portions of the second end portion.
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