Title:
BUTTON BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/218868
Kind Code:
A1
Abstract:
Disclosed is a button battery, comprising a pole assembly unit which comprises a first winding core, a first tab, and a first current collector; the first winding core comprises a first electrode layer, a second electrode layer, and a first separator sandwiched between the adjacent first electrode layer and second electrode layer, the properties of the first electrode layer and second electrode layer being opposite to each other. The button battery also comprises a battery housing, a battery cover, and an insulating sealing ring; the battery housing forms a sealed cavity with the battery cover by means of the sealing ring; an electrolyte is stored within the sealed cavity; the pole assembly unit is disposed within the sealed cavity; and the first electrode layer is electrically connected to the battery cover by means of the first tab, and the second electrode layer is electrically connected to the battery housing by means of the first current collector. With regards to the button battery, the contact area can be increased, which helps to improve the charging and discharging performance, and the stability of the operation of the battery is increased.
Inventors:
WANG XIAOXIA (CN)
Application Number:
PCT/CN2021/089688
Publication Date:
November 04, 2021
Filing Date:
April 25, 2021
Export Citation:
Assignee:
SHENZHEN HYNETECH COMPANY LTD (CN)
International Classes:
H01M50/109; H01M50/147; H01M50/153; H01M50/184; H01M50/186; H01M50/531
Foreign References:
| CN111509148A | 2020-08-07 | |||
| CN111653815A | 2020-09-11 | |||
| CN208738342U | 2019-04-12 | |||
| CN208385555U | 2019-01-15 | |||
| CN210245625U | 2020-04-03 | |||
| CN104332647A | 2015-02-04 | |||
| US6265100B1 | 2001-07-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
Download PDF: