Title:
電池パック
Document Type and Number:
Japanese Patent JP5761742
Kind Code:
B2
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 of the present invention is characterized by including a plurality of unit batteries 100 connected in series, the unit batteries 100 including: a positive-electrode pulled-out tab 120 and a negative-electrode pulled-out tab 130; and a laminate casing member that is provided with a first end portion 111, from which the positive-electrode pulled-out tab 120 and the negative-electrode pulled-out tab 130 are pulled out, a second end portion 112, which faces the first end portion 111, a first fusion-bonding portion 117, which has a first fusion-welding length in a direction in which a tab is pulled out at a first end portion 111's side, a second fusion-bonding portion 118, which 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 portion 112's side, and chamfered portions 119, which are positioned at both corner portions of the second end portion 112.
Inventors:
Toru Suzuki
Application Number:
JP2011078341A
Publication Date:
August 12, 2015
Filing Date:
March 31, 2011
Export Citation:
Assignee:
NEC Energy Device Co., Ltd.
International Classes:
H01M50/105; H01M50/119; H01M50/121; H01M50/126; H01M50/211; H01M50/51
Domestic Patent References:
| JP2001202931A | ||||
| JP200511855A | ||||
| JP20037262A | ||||
| JP2002260600A | ||||
| JP2006244755A |
Foreign References:
| US20090323293 |
Attorney, Agent or Firm:
Teiji Tanaka
Akira Yonezawa
Ryukichi Abe
Takashi Koyama
Yoshiaki Minami
Akira Yonezawa
Ryukichi Abe
Takashi Koyama
Yoshiaki Minami