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Title:
ZINC SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/188490
Kind Code:
A1
Abstract:
Provided is an upper tab-type zinc secondary battery that is not prone to short-circuiting. This zinc secondary battery comprises: a positive electrode plate including a positive electrode active material layer, and a positive electrode current collector; a positive electrode tab lead extending from an end portion of the positive electrode plate; a negative electrode plate including a negative electrode active material layer including zinc and the like, and a negative electrode current collector; a negative electrode tab lead extending from an end portion of the negative electrode plate; a hydroxide ion-conductive separator; and an electrolyte solution. The positive electrode plate, the positive electrode tab lead, the negative electrode plate, the negative electrode tab lead, and the hydroxide ion-conductive separator are all arranged oriented vertically. The positive electrode tab lead and the negative electrode tab lead extend upwards. Each electrode plate has a non-coated region where the electrode active material layer is not present along the upper edge of the electrode plate. The tab lead is welded to the current collector in said non-coated region, and an insulating tape is affixed to the non-coated region such that the welded portion is covered by the insulating tape.

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Inventors:
MATSUYA JUNKI (JP)
Application Number:
PCT/JP2022/039699
Publication Date:
October 05, 2023
Filing Date:
October 25, 2022
Export Citation:
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Assignee:
NGK INSULATORS LTD (JP)
International Classes:
H01M50/536; H01M10/28; H01M10/30; H01M10/32; H01M12/08; H01M50/434; H01M50/44; H01M50/446; H01M50/466; H01M50/54; H01M50/55; H01M50/586; H01M50/595
Domestic Patent References:
WO2021193436A12021-09-30
Foreign References:
JP2020205269A2020-12-24
US20220093933A12022-03-24
CN113097662A2021-07-09
CN106299239A2017-01-04
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
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