Title:
WINDING BEAN TYPE BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/114324
Kind Code:
A1
Abstract:
A winding bean type battery, comprising a bottom housing (1) and a cover cap (2); a space that accommodates winding battery cells (3) is formed between the bottom housing (1) and the cover cap (2); one tab (31) of the winding battery cells (3) is connected to the cover cap (2), and the other tab (31) is connected to the bottom housing (1); the bottom housing (1) comprises a bottom plate (11) and a first surrounding wall (12) that is annularly provided on one side surface of the bottom plate (11); the cover cap (2) comprises a top plate (21) and a second surrounding wall (22) that is annularly provided on one side surface of the top plate (21); the second surrounding wall (22) is sleeved outside of the first surrounding wall (12); a plurality of continuous first arc-shaped portions (13) are provided on the first surrounding wall (12) along the axis direction thereof; a plurality of second arc-shaped portions (23) that cooperate with the first arc-shaped portions (13) are provided on the second surrounding wall (22) along the axis direction thereof; sealing pieces (4) are clamped between the first surrounding wall (12) and the second surrounding wall (22); a pole piece (34) of the winding battery cells (3) is an elongated strip shape; when one tab (31) is provided on the pole piece (34), same is disposed at the center of the length direction of the pole piece (34); and when at least two tabs (31) are provided on the pole piece (34), same are disposed at intervals along the length direction of the pole piece (34).
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Inventors:
XU CHENG (CN)
FENG BIAO (CN)
GE HUIMING (CN)
YUAN ZHONGZHI (CN)
LIU JINCHENG (CN)
FENG BIAO (CN)
GE HUIMING (CN)
YUAN ZHONGZHI (CN)
LIU JINCHENG (CN)
Application Number:
PCT/CN2019/125997
Publication Date:
June 17, 2021
Filing Date:
December 17, 2019
Export Citation:
Assignee:
EVE ENERGY CO LTD (CN)
International Classes:
H01M2/08
Foreign References:
| CN109686919A | 2019-04-26 | |||
| CN204905347U | 2015-12-23 | |||
| CN106803555A | 2017-06-06 | |||
| CN107785534A | 2018-03-09 | |||
| CN202855818U | 2013-04-03 | |||
| JP2004014290A | 2004-01-15 | |||
| CN107425145A | 2017-12-01 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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