A battery assembly, such as a bipolar battery assembly, generally includes a first casing portion comprising an optically-absorbing region, and a second casing portion comprising an optically-transmissive region. The first and second features form a welded joint. Fabrication of such an assembly can include physically mating the first casing portion with the second casing portion, and irradiating, such as using a laser, the optically-absorbing region defining the first feature through the optically-transmissive region to form the welded joint.

A current collector plate assembly including a polygon-shaped electrically conductive substrate having a first surface and a second, opposing, surface, and at least three edges. A frame is coupled to regions of the first and second surfaces near the at least three edges of the substrate. A first cladding of a positive active materials layer covers an area of the first surface of the substrate. A second cladding of a negative active materials layer covers an area of the second surface of the substrate.

The present invention relates to a uni-electrogrid lead acid battery and process of making the same. More particularly, the present invention relates to uni-electro grid plate comprising a) tubular unielectro grid plate comprising of positive tubular grid plate and negative flat grid plate; or flat unielectrogrid plate comprising of positive flat grid plate and negative flat grid plate; b) non-conductive substrate comprising positive tubular grid with positive active material on its first side and negative flat grid with negative active material on its second side; or positive flat grid with positive active material on its first side and negative flat grid with negative active material on its second side; c) at least single in one side of the grid or multiple interconnectors placed between the positive and negative grid; and d) sealant. Also, it provides tubular unielectro grid plate or flat unielectrogrid plate and process for preparing the same.

A bipolar lead storage battery includes a plurality of cell members laminated on one another, inner frames that each include a bipolar plate provided between the cell members, and a frame member (a rim) provided in an outer peripheral portion of the bipolar plate to rise in a thickness direction of the bipolar plate. The bipolar lead storage battery also includes a pair of outer frames respectively placed at opposite end portions in a lamination direction. The inner frames or the outer frames are made of fiber reinforced thermoplastic resin. The arrangement restrains deformation of an inner frame or an outer frame due to the pressure inside a cell and allows a reduced thickness of the inner frame or the outer frame.

A bipolar lead storage battery includes a plurality of cell members laminated on one another, inner frames that each include a bipolar plate provided between the cell members, and a frame member (a rim) provided in an outer peripheral portion of the bipolar plate to rise in a thickness direction of the bipolar plate. The bipolar lead storage battery also includes a pair of outer frames respectively placed at opposite end portions in a lamination direction. The inner frames or the outer frames are made of fiber reinforced thermoplastic resin. The arrangement restrains deformation of an inner frame or an outer frame due to the pressure inside a cell and allows a reduced thickness of the inner frame or the outer frame.

A lead alloy usable to manufacture a lead storage battery electrode the with easily predictable growth is described. The diffraction intensity determined by analyzing the surface of the lead alloy in a crystal orientation {211}<111> in a pole figure using an X-ray diffraction method is five or less times the diffraction intensity determined by analyzing powder of pure lead in a random orientation in a pole figure using the X-ray diffraction method.

A lead alloy usable to manufacture a lead storage battery electrode the with easily predictable growth is described. The diffraction intensity determined by analyzing the surface of the lead alloy in a crystal orientation {211}<111> in a pole figure using an X-ray diffraction method is five or less times the diffraction intensity determined by analyzing powder of pure lead in a random orientation in a pole figure using the X-ray diffraction method.

A lead alloy that is difficult to cause extension even when force is applied to the lead alloy is described. The half width of a (311) diffraction peak in a diffraction chart obtained by analyzing the lead alloy using an X-ray diffraction method is 1.4 or more times the half width of a (311) diffraction peak in a diffraction chart obtained by analyzing powder of pure lead using the X-ray diffraction method.

A lead alloy that is difficult to cause extension even when force is applied to the lead alloy is described. The half width of a (311) diffraction peak in a diffraction chart obtained by analyzing the lead alloy using an X-ray diffraction method is 1.4 or more times the half width of a (311) diffraction peak in a diffraction chart obtained by analyzing powder of pure lead using the X-ray diffraction method.

A bipolar battery includes a plurality of cell members and a plurality of frame units configured to form a plurality of cells individually housing the plurality of cell members. Each of the plurality of frame units has joining surfaces facing each other in the stacking direction of the cell members, which are joined to each other by a joining material. On outer side surfaces of the frame units adjacent to each other in the stacking direction, a groove is formed which communicates between the joining surfaces to be joined and opens to the outer side surfaces. A water sealing material is disposed in the groove. This arrangement provides a bipolar battery capable of reliably preventing an electrolyte from leaking out of a cell by a simple seal configuration.