Back to results
US 12,562,416 B2Granted
Pouch-shaped secondary battery sealing apparatus and pouch-shaped secondary battery manufacturing method
AssigneeLG Energy Solution, Ltd.
InventorsJu Hwan Baek, Seung Bae Lee, Jung Su Oh
Life of this patent
Estimating the term…
Abstract
The present invention relates to a pouch-shaped secondary battery sealing apparatus and a pouch-shaped secondary battery manufacturing method capable of radiating an infrared laser to a sealed portion in an overlapping state, whereby it is possible to increase sealing force, to prevent occurrence of wrinkles, and to reduce sealing time when forming a sealed portion of a pouch-shaped secondary battery case.
Claims12
A pouch-shaped secondary battery sealing apparatus comprising:
- a pressing portion configured to be disposed above or below a sealed portion of a pouch-shaped secondary battery case comprising a metal layer, the pressing portion being made of a material capable of transmitting infrared light therethrough;
- a first infrared light radiation portion configured to radiate the infrared light to the pressing portion;
- and
- a second infrared light radiation portion configured to radiate the infrared light to overlap a radiation area of the first infrared light radiation portion,
- wherein the first infrared light radiation portion and the second infrared light radiation portion are both located above the pressing portion or are both located below the pressing portion.
2 more elements
A secondary battery manufacturing method comprising:
- receiving an electrode assembly in a secondary battery case made of a laminate sheet comprising an outer resin layer, a metal layer, and an inner sealant layer, the secondary battery case comprising an electrode assembly receiving portion and a sealed portion surrounding the electrode assembly receiving portion;
- and
- pressing the sealed portion with a pressing portion while heating the sealed portion using a first infrared light radiation portion and a second infrared light radiation portion to seal the sealed portion,
- wherein the first infrared light radiation portion and the second infrared light radiation portion radiate infrared light to a same surface of the pressing portion, and radiation areas of the first infrared light radiation portion and the second infrared light radiation portion of the pressing portion overlap each other, and
- wherein the first infrared light radiation portion and the second infrared light radiation portion heat the metal layer such that the inner sealant layer is melted by heat conducted from the metal layer.
2 more elements
Dependencies are inferred from the claim text.