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US 12,614,787 B2Granted
Battery case shaping apparatus and method using shock wave
AssigneeLG Energy Solution, Ltd.
InventorsHo June Chi, Hang June Choi, Jeong Oh Moon, Jin Yong Park
Life of this patent
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Abstract
A battery case shaping apparatus and method shape a pouch-shaped battery case. The battery case shaping apparatus includes a conductive liquid and positive and negative electrodes each configured to generate electric discharge in the conductive liquid in order to prevent a laminate sheet for battery cases from being damaged by friction between a punch and a die and to allow the entirety of the laminate sheet to be elongated.
Claims7
A battery case shaping apparatus comprising:
- a punch configured to press a laminate sheet for battery cases;
- a die located under the punch, the die forming an accommodation portion corresponding to an electrode assembly receiving portion;
- a holder configured to fix the laminate sheet;
- an elastic separator coupled to the holder, the elastic separator being located under the punch;
- a conductive liquid configured to form a cavity due to gas generated by electric discharge;
- and
- a positive electrode and a negative electrode each disposed in contact with the conductive liquid for the electric discharge,
- wherein a space is defined by the elastic separator, the holder, and a lower surface of the punch, and the conductive liquid is received in the space, and
- wherein the positive electrode and the negative electrode each extend into the space between the lower surface of the punch and the elastic separator.
6 more elements
Dependencies are inferred from the claim text.