Rainer Bittihn, Detley Hoge, Rudolf Herr: Electrochemical secondary element. Varta Batterie Aktiengesellschaft, Weiser & Stapler, December 8, 1992: US05169736 (79 worldwide citation)

An electrochemical secondary element with a non-aqueous electrolyte, whose charge/discharge mechanism is predicated upon the reversible intercalation of active Li+ ions in electrode materials having an open skeletal structure. The positive electrode is essentially a lithium-manganese spinel of the t ...

August Winsel: Method and apparatus for electrochemical energy production. Varta Batterie Aktiengesellschaft, Weiser Stapler & Spivak, September 14, 1982: US04349613 (57 worldwide citation)

Combined operation between a lithium high-energy cell of the Li/H.sub.2 O or Li/H.sub.2 O.sub.2 system, a fuel cell, and if appropriate a storage battery can be carried out with favorable energy balance by producing on the one hand so much CO.sub.2 using a methanol reformer in accordance with ##STR1 ...

Jurgen Brinkmann, Hermann Franke: Battery cell cooling system. Varta Batterie Aktiengesellschaft, Weiser Stapler & Spivak, February 8, 1977: US04007315 (49 worldwide citation)

Multi-cell battery cooling is accomplished by cooling elements immersed in the cell-top electrolyte. The elements have high heat conductivity and electric resistance. The cooling medium has low electric resistance. Various configurations of circulatory flow paths provide various utilizations for the ...

Karl G Horn: Process for charging maintenance-free lead batteries with a fixed electrolyte. Varta Batterie Aktiengesellschaft, Weiser & Stapler, August 28, 1990: US04952861 (43 worldwide citation)

A three-stage rapid charging process for maintenance-free lead storage batteries with a fixed electrolyte, which produces consistently recurring full charging of both electrode polarities even under cyclic loading, includes a first charging stage which proceeds at a constant current of the magnitude ...

Rudolf Herr: Lithium ion cell. Varta Batterie Aktiengesellschaft, Weiser and Associates P C, February 15, 2000: US06025093 (38 worldwide citation)

The invention relates to a lithium ion cell, comprising a positive electrode which contains a chalkogen compound, containing lithium, of a transition metal, a non-aqueous electrolyte and a negative electrode which is separator-isolated and contains carbon, which is characterized in that the cell con ...

Jurgen O Besenhard, Erich Wudy, Heinz P Fritz: Lithium battery electrode frame. Varta Batterie Aktiengesellschaft, Weiser & Stapler, October 15, 1985: US04547442 (38 worldwide citation)

Durable mechanical and electronic contact is achieved between the support frame of a battery electrode and its active material A, whose electro-chemical capacity is utilizable to a very high degree, by providing the base material M.sub.1 of the support frame, which is not itself capable of being all ...

August Winsel: Lithium peroxide primary element. Varta Batterie Aktiengesellschaft, Weiser & Stapler, March 12, 1985: US04504561 (38 worldwide citation)

In a galvanic primary element of the system Li/H.sub.2 O.sub.2, the aqueous cathode depolarizer H.sub.2 O.sub.2 is fixated as a polyurethane gel. It can thereby be controlled and caused to react with the anode metal in accordance with the current drain requirements. This is accomplished using a ram ...

Werner Riedl: Galvanic element. Varta Batterie Aktiengesellschaft, Weiser Stapler & Spivak, April 21, 1981: US04263380 (35 worldwide citation)

A galvanic element of buttom cell configuration is provided, in addition to the usual seal of thermoplastic material between cell terminal and cell cup, with an additional seal. This fills the annular gap which is created when a contact cap surrounding the galvanic element is attached to the cell te ...

Hans Kurt Kothe, Gunter Strasen: Charging of alkaline storage batteries. VARTA Batterie Aktiengesellschaft, Weiser Stapler & Spivak, December 29, 1981: US04308493 (32 worldwide citation)

Changes in temperature during charging are sensed and the charging current increased when temperature rises and decreased when temperature falls. Charging continues to a potential limit which is independent of temperature.

Hans Sauer: Air/oxygen cell. Varta Batterie Aktiengesellschaft, Weiser & Stapler, December 10, 1985: US04557983 (32 worldwide citation)

In an air/oxygen button cell the multilayer air electrode is reliably held in place between an inwardly extending rib which is formed in the bottom of the cathode cup and a sealing base which is associated with the cup forming the negative electrode. The sealing base acts like a domed spring under t ...