An electrohydraulic forming apparatus includes a mold with an upper portion and a lower portion, an enclosure having a first region, a second region, a mold cavity positioned in the second region, and electrodes having electrode tips positioned in the first region, wherein a piston is mounted so as to be movable in translation within a channel in a fluidtight manner and separates the first region from the second region of the enclosure.

An electrohydraulic forming apparatus includes a mold with an upper portion and a lower portion, an enclosure having a first region, a second region, a mold cavity positioned in the second region, and electrodes having electrode tips positioned in the first region, wherein a piston is mounted so as to be movable in translation within a channel in a fluidtight manner and separates the first region from the second region of the enclosure.

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.

An electrohydraulic forming device comprising includes a tank having a tank inner wall and inside of which are positioned a mold, a first electrode, and a second electrode. A free first reflector is placed in the tank and surrounds the mold, the first electrode, and the second electrode.

An electrohydraulic forming device comprising includes a tank having a tank inner wall and inside of which are positioned a mold, a first electrode, and a second electrode. A free first reflector is placed in the tank and surrounds the mold, the first electrode, and the second electrode.

A method of producing an integrated monolithic aluminum structure, comprising: providing an aluminum alloy plate with a thickness of at least 38.1 mm, wherein the plate is a 2xxx-series alloy in a T3-temper and has a composition comprising, in wt. %: Cu 3.8-4.5, Mn 0.3-0.8, Mg 1.1-1.6, Si up to 0.15, Fe up to 0.20, Cr up to 0.10, Zn up to 0.25, Ti up to 0.15, Ag up to 0.10, balance aluminum; optionally pre-machining the plate to an intermediate machined structure; high-energy hydroforming the plate or intermediate structure against a rigid die forming surface having a desired curvature contour of the integrated monolithic aluminum structure, causing the plate or the intermediate structure to conform to the forming surface contour; machining or mechanical milling the high-energy formed structure to a near-final or final machined integrated monolithic aluminum structure; ageing the final integrated monolithic aluminum structure to a desired temper.

A head of an electrohydraulic discharge device of the invention comprises: —an end of a power cable having a first conductor and a second conductor, —an explosive wire comprising multiple segments assembled in a series, and —means for connecting each of the ends of the explosive wire to the end of the power cable.

A head of an electrohydraulic discharge device of the invention comprises: —an end of a power cable having a first conductor and a second conductor, —an explosive wire comprising multiple segments assembled in a series, and —means for connecting each of the ends of the explosive wire to the end of the power cable.

An indirect electrohydraulic draw-forming tool includes a body having a tubular cylindrical area, a chamber intended to be filled with a liquid, two electrodes, each of the electrodes having a portion arranged in the chamber, a punch. The tool also includes a piston mounted so as to slide in a sealed manner within the cylindrical area and sealingly defining the chamber. Moreover, the punch is carried by the piston on a face thereof that is opposite to the chamber.

An indirect electrohydraulic draw-forming tool includes a body having a tubular cylindrical area, a chamber intended to be filled with a liquid, two electrodes, each of the electrodes having a portion arranged in the chamber, a punch. The tool also includes a piston mounted so as to slide in a sealed manner within the cylindrical area and sealingly defining the chamber. Moreover, the punch is carried by the piston on a face thereof that is opposite to the chamber.