摘要:
An improved non-sintered type nickel positive electrode comprising a nickel hydroxide powder as an active material and a cobalt hydroxide powder for improving the utilization of the active material, and an alkaline storage battery configured with the positive electrode are disclosed. In the non-sintered type nickel positive electrode, at least part of the surfaces of the particles of the cobalt hydroxide powder is covered with a stabilizing agent of at least one member selected from the group consisting of a higher carboxylic acid, an ester of carboxylic acid, an aldehyde, a phenol and a vitamin.
摘要:
An enclosed type secondary-cell maintaining enclosed property and battery performance for a long period in a wide range of environments of use including high temperature, high humidity, and vibration is presented. A terminal pole 2 is composed of a current collector 2g, a flange 2b with a flat top surface, and a pole 2a formed on the flange upper surface 2bf projecting at right angle, a rotation arresting portion 18 of the terminal pole 2 is formed by the flange 2b and lower side of a lid 1, an annular packing 3 is disposed between the flange upper surface 2bf and lid 1 lower side so as to surround the pole 2a, an annular pressing spring 6 is pressed in from above the pole 2a, the annular packing 3 interposed between the flange upper surface 2bf and lid 1 lower side is compressed in the vertical direction by the elastic force of the annular pressing spring 6, the annular pressing spring 6 is stopped on the outer circumferential edge of the pole 2 at a position for sealing and fixing the terminal pole 2 in the lid 1, and thereby the battery jar 10 is enclosed.
摘要:
In the module battery, by disposing end plates (33) including a flat plate portion (40) and a rectangular frame portion (35) at each end of a cell group and by binding the cell group by means of binding members (34) and metal studs (38), the increase of the internal pressure during the charging/discharging cycles and the dimensional change of the module battery due to the expansion of the cell group can be suppressed, while the weight and volume increase caused by the binding members (34) are minimized.
摘要:
A sealed storage battery has a rectangular casing (3) and a lid (2) of synthetic resin, which are connected by welding so as to seal an opening of the rectangular casing (3), and protruded portion on the outer welded portion (5) is removed and smoothed so that air as a cooling module is smoothly flown in spaces formed by ribs (4) on the battery casing (3) and the lid (2).
摘要:
A casing of sealed alkaline storage battery to be stacked in plural number in one direction, each provided with a safety vent; each casing is made of a polymer alloy which mainly comprises polyphenylen ether, polystyrene and an elastomer; at least one outersurface of the casing has a plurality of vertical protrusion ribs thereby to form vertical ventilation spaces through which a cooling medium passes;the vertical ribs formed on an outer surface of the casing have a protrusion height of 1 to 2 mm, the interval between ribs of 7 to 15 mm , rib width of 3 to 10 mm; thickness of inter-rib portion of casing are 1 to 3 mm, and those at the parts of short side walls 2 to 4 mm.
摘要:
A nickel/hydrogen storage battery comprises a nickel positive electrode having nickel oxide as a main active material, a negative electrode mainly composed of a hydrogen absorbing alloy capable of carrying out the electrochemical hydrogen absorbing and desorbing reaction, an alkaline electrolyte, and a separator, a zinc compound being contained in the nickel positive electrode, the negative electrode and the separator. The content of the zinc compound in terms of zinc oxide is 30-500 mg per Ah of battery capacity in the nickel positive electrode and 0.3-15 mg in the negative electrode and the separator. Thus, the expansion of the nickel positive electrode can be inhibited and the electrolyte retention of the negative electrode and the separator can be improved and the cycle life of the battery can be prolonged.
摘要:
Alkaline storage battery, in which the negative electrode is constituted by a hydrogen absorbing alloy capable of absorbing/desorbing hydrogen electrochemically, and a hydrophobic material and a hydrophilic material are provided in a portion of the surface layer of the negative electrode and in the side of the negative electrode respectively so as to properly secure both the wetting property and hydrophobic property of the negative electrode against the alkaline electrolytic solution. Accordingly, a hydrogen can be absorbed electrochemically in the portion of the negative electrode which is wetted by the electrolytic solution and a hydrogen gas generated in charging the battery can be absorbed by a vapor phasc reaction in the hydrophobic portion of the negative electrode which is exposed to the vapor phase so that the internal gas pressure can be reduced to thereby make it possible to perform rapid charging.