Battery manufacturing method

Abstract

To provide a manufacturing method of a battery capable of stably manufacturing a battery of high quality.SOLUTION: An uneven part 15a and an uneven part 26a are formed in at least a portion of a contact range with a seal resin member 30 in a lid body 10 and a terminal member 20. When manufacturing a battery 1, the seal resin member 30 and the terminal member 20 are attached to the lid body 10. In that case, prepared is a state where a tubular part 32 is positioned inside of a terminal port 13 and a columnar part 22 is positioned further inside. Also prepared is a state where the columnar part 22 and the tubular part 32 partially protrude to the side of an inner face 12 of the lid body 10. Further, in the seal resin member 30, at least a portion in contact with a distal end 37 of the tubular part 32, the uneven part 15a and the uneven part 26a is softened by a temperature rise. In addition, the distal end 37 of the tubular part 32 is pressurized toward the inner face 12 of the lid body 10 in the softened state, such that a cut-off preventive shape part 33 is formed therein.SELECTED DRAWING: Figure 6

Claims

1. A method for manufacturing a battery comprising a power generation element, an outer casing housing the power generation element and having a terminal opening formed therein, a terminal member connected to the power generation element inside the outer casing and partially protruding outside the outer casing through the terminal opening, and a sealing resin member that closes the gap between the outer casing and the terminal member at the terminal opening, As the terminal member, A columnar portion located inside the terminal opening, Using a component that is connected to the columnar portion and located outside the exterior body, and has an exposed surface that is exposed to the outside, As the aforementioned sealing resin member, A holding part that holds the exposed outer part while exposing the exposed surface and separating it from the outer body, A tubular portion is used that is connected to the holding portion, located between the wall surface of the terminal opening and the columnar portion, and has a tubular shape that is longer than the thickness of the outer casing at the location of the terminal opening. At least a portion of the contact area with the sealing resin member on at least one of the exterior body and the terminal member has an uneven surface, The sealing resin member and the terminal member are attached to the exterior body. The tubular portion is located inside the terminal opening, and the columnar portion is located further inside thereof. The outer part is held by the holding portion on the outer surface side of the outer body, The columnar portion and the tubular portion each protrude towards the inner surface of the outer casing, At least the portion of the sealing resin member that protrudes towards the inner surface of the outer casing and the portion that is in contact with the uneven portion are heated to soften it. A method for manufacturing a battery, in which, while the tubular portion is softened, pressurizes the portion of the tubular portion that protrudes toward the inner surface of the outer casing toward the inner surface of the outer casing, thereby forming a retaining shape in which a portion of the resin of the tubular portion spreads out on the inner surface of the outer casing.

2. A method for manufacturing a battery according to claim 1, A method for manufacturing a battery, wherein the aforementioned uneven portion is formed on both the wall surface of the terminal opening and the surface of the columnar portion.

3. A method for manufacturing a battery according to claim 1, wherein the temperature of the sealing resin member is raised, The outer casing and at least one of the terminal members are heated, A method for manufacturing a battery, which involves causing heat conduction from the heated outer casing or terminal member to the sealing resin member.

4. A method for manufacturing a battery according to claim 1, wherein the sealing resin member is: A method for manufacturing batteries using a molded product of a composite resin in which a fiber material is blended with resin.

5. A method for manufacturing a battery according to claim 1, wherein the sealing resin member is: A method for manufacturing a battery using a battery in which the molding gate mark is within the contact range with the outer casing or the contact range with the terminal member.

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