Title:
BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/203038
Kind Code:
A1
Abstract:
Provided is a battery in which a case accommodates: a coil structure electrode body comprising a band-shaped positive electrode comprising a positive electrode lead, a band-shaped negative electrode comprising a negative electrode lead, and a band-shaped separator which is disposed between the positive electrode and the negative electrode; and an electrolyte. The positive electrode lead and the negative electrode lead are drawn out from one end surface of the electrode body, and the electrode body comprises a separator molding part which protrudes from the other end surface thereof. The battery satisfies Formula 1 and Formula 2. Formula 1: 0.08 ≦ W2/Ws ≦ 0.17 Formula 2: 0.20 ≦ W4/W2 ≦ 0.53 In Formula 1 and Formula 2: W1 is the quantity by which the separator on the one end surface side extends beyond the negative electrode; W2 is the quantity by which the separator on the other end surface side extends beyond the negative electrode; Ws is the width of the separator; and W4 is a dimension from an end part of the negative electrode to a bottom part of the electrode body (excluding a tape thickness).
Inventors:
HORIKOSHI YOSHIICHI (JP)
NISHIIE DAIKI (JP)
TOKUGAWA HIDEAKI (JP)
OTSUKA MASAHIRO (JP)
AKIZUKI NAOTO (JP)
NISHIIE DAIKI (JP)
TOKUGAWA HIDEAKI (JP)
OTSUKA MASAHIRO (JP)
AKIZUKI NAOTO (JP)
Application Number:
PCT/JP2020/009652
Publication Date:
October 08, 2020
Filing Date:
March 06, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01M10/04; H01M10/0587; H01M50/103; H01M50/528; H01M50/534; H01M50/586; H01M50/595
Foreign References:
| JP2013164967A | 2013-08-22 | |||
| JP2010020956A | 2010-01-28 | |||
| JP2011076796A | 2011-04-14 | |||
| JPH07153488A | 1995-06-16 | |||
| JPH0574443A | 1993-03-26 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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