Power Storage Device And Method For Manufacturing Same

Abstract: This power storage device is provided with an electrode body, an exterior film, a seal part, and a seal reinforcement part. The exterior film wraps the electrode body so as to form an opening and has a first seal region. A lid body is disposed in the opening and has a second seal region facing the first seal region. The seal part is formed between the first seal region and the second seal region, and at least partially seals a portion between the first seal region and the second seal region. The seal reinforcement part reinforces sealing by the seal part.

Patent Information

Application #

Filing Date

08 October 2025

Publication Number

46/2025

Publication Type

INA

Invention Field

ELECTRICAL

Status

Email

Parent Application

Applicants

DAI NIPPON PRINTING CO., LTD.

1-1, Ichigaya Kagacho 1-chome, Shinjuku-ku, Tokyo 1628001

Inventors

1. MIYASHIRO, Kae

c/o DAI NIPPON PRINTING CO., LTD., 1-1, Ichigaya Kagacho 1-chome, Shinjuku-ku, Tokyo 1628001

2. URIU, Toshibumi

c/o DAI NIPPON PRINTING CO., LTD., 1-1, Ichigaya Kagacho 1-chome, Shinjuku-ku, Tokyo 1628001

3. KANAZAWA, Sayako

c/o DAI NIPPON PRINTING CO., LTD., 1-1, Ichigaya Kagacho 1-chome, Shinjuku-ku, Tokyo 1628001

4. SASAKI, Miho

c/o DAI NIPPON PRINTING CO., LTD., 1-1, Ichigaya Kagacho 1-chome, Shinjuku-ku, Tokyo 1628001

Specification

Documents

Application Documents

#	Name	Date
1	202517097086-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [08-10-2025(online)].pdf	2025-10-08
2	202517097086-STATEMENT OF UNDERTAKING (FORM 3) [08-10-2025(online)].pdf	2025-10-08
3	202517097086-REQUEST FOR EXAMINATION (FORM-18) [08-10-2025(online)].pdf	2025-10-08
4	202517097086-PROOF OF RIGHT [08-10-2025(online)].pdf	2025-10-08
5	202517097086-PRIORITY DOCUMENTS [08-10-2025(online)].pdf	2025-10-08
6	202517097086-POWER OF AUTHORITY [08-10-2025(online)].pdf	2025-10-08
7	202517097086-FORM 18 [08-10-2025(online)].pdf	2025-10-08
8	202517097086-FORM 1 [08-10-2025(online)].pdf	2025-10-08
9	202517097086-DRAWINGS [08-10-2025(online)].pdf	2025-10-08
10	202517097086-DECLARATION OF INVENTORSHIP (FORM 5) [08-10-2025(online)].pdf	2025-10-08
11	202517097086-COMPLETE SPECIFICATION [08-10-2025(online)].pdf	2025-10-08