A metal plate and an electrode in a polymer lithium ion secondary battery or the like are welded certainly, and it is accomplished to further improve the reliability and the durability thereof. Each of an upper metal plate (7 a) and a lower metal plate (9 a) on the positive pole/terminal is welded to a pole/terminal of positive electrode (3) so that the pole/terminal of positive electrode (3) may be sandwiched from each of the upper and lower sides. Moreover, each of an upper metal plate (7 b) and a lower metal plate (9 b) on the negative pole/terminal is welded to a pole/terminal of negative electrode (5) so that the pole/terminal of negative electrode (5) may be sandwiched from each of the upper and lower sides. This eliminates occurrence of poor welding in the electric resistance welding.

Battery, method of manufacturing the same, method of manufacturing weldment, and pedestal

A metallic plate and an electrode of, e.g., a polymer lithium ion secondary cell are welded to each other securely so as to further improve the reliability and durability. An upper metallic plate (7a) and a lower metallic plate (9a) of a positive plate are so welded to an electrode (3) of the positive plate that they vertically sandwich the electrode (3). Similarly, an upper metallic plate (7b) and a lower metallic plate (9b) are so welded to an electrode (5) of a negative plate that they sandwich the electrode (5). Thus defective electric resistance welding is prevented.

Cell, cell production method, welded article production method and pedestal

A method of producing a lithium battery includes laser welding at least one current collector (230) to an electrode (220). A refractory material may be provided adjacent the electrode (220) before the laser welding step.

Lithium battery manufacturing method

Spatter protection device for a spot welding electrode (13) consists of a skirt (9) of insulating material, pref. plastic, at a radial distance of, e.g., 1mm from the electrode tip. The flexible skirt is axially tensioned by a spring (11) on a guide bush (10). In the unloaded condition, the skirt projects slightly beyond the electrode tip so that it contacts the workpiece before the electrode. ADVANTAGE - Protects operating personnel.

Spatter protection device for spot welding electrode - consisting of skirt of insulating material pref. plastic axially held by spring in guide bush

A sheet metal resistance welding electrode according to the invention, in particular for the spot welding of aluminium sheets, consists essentially of an electrically highly conductive ceramic material, preferably titanium diboride (TiB2). In addition it may contain a proportion of 10%-25%, preferably 20%, of iron (Fe). Such an electrode, when employed in the resistance welding of aluminium sheets, can effectively prevent alloying and thus significantly improve electrode life.

Electrode for resistance welding

Electrodes for use in spot welding which can spot-weld a metallic material having a large electric conductivity and a large thermal conductivity with a small electric current. A cup-shaped cap made of material having a small electric conductivity, a small thermal conductivity and a high melting point temperature as compared to the material to be welded, for instance, made of titanium, is fitted arond a tip end portion of an electrode main body. The top surface of the cap is formed in a spherical shape having a large radius of curvature, and a depression is formed at the central portion of the top surface. The thickness of the top wall is thick at the central portion and thin at the peripheral portion. Plating of soft metal having a better thermal conductivity than the electrode main body is applied onto the entire inner surface of the cap coming into contact with the electrode main body. At least between the top wall of the cap and the tip end surface of the electrode main body, is interposed a plate member made of metal having a better electric conductivity than the electrode main body and a good thermal conductivity and a small hardness as compared to the cap. At least the top surface of the cap is subjected to nitriding treatment.

Kidachi Shigeo

Papers

Electrodes for use in spot welding

Elektroden zum verwenden beim punktschweissen