Exide Technologies Patent applications |
Patent application number | Title | Published |
20150243998 | LEAD-ACID BATTERY POSITIVE PLATE AND ALLOY THEREFORE - A lead-acid battery grid made from a lead-based alloy containing tin, calcium, bismuth and copper and characterized by enhanced mechanical properties, corrosion resistance, less battery gassing, lower sulfation and water loss, and no post-casting treatment requirements for age hardening. In one embodiment, the battery grids are formed from a lead-based alloy including about 2.0% tin, about 0.0125% copper, about 0.065% calcium, and about 0.032% bismuth. Preferably, the battery grid is free of silver beyond trace levels in the alloy. | 08-27-2015 |
20140255775 | ADVANCED GRAPHITE ADDITIVE FOR ENHANCED CYCLE-LIFE OF LEAD-ACID BATTERIES - An Advanced Graphite, with a lower degree of ordered carbon domains and a surface area greater than ten times that of typical battery grade graphites, is used in negative active material (NAM) of valve-regulated lead-acid (VRLA) type Spiral wound 6V/25 Ah lead-acid batteries. A significant and unexpected cycle life was achieved for the Advanced Graphite mix, where the battery was able to cycle beyond 145,000 cycles above the failure voltage of 9V, in a non-stop, power-assist, cycle-life test. Batteries with Advanced Graphite also showed increased charge acceptance power and discharge power compared to control groups. | 09-11-2014 |
20140120386 | Over-Saturated Absorbed Glass Mat Valve Regulated Lead-Acid Battery Comprising Carbon Additives - Disclosed herein is a absorbed glass matt (AGM) valve regulated lead-acid (VRLA) battery, comprising: a positive plate comprising a positive active material; a negative plate comprising a negative active material; wherein the negative active material comprises a composition comprising a carbon additive; an AGM separator; and an electrolyte; wherein the positive plate, the negative plate, the separator, and the electrolyte are disposed in a container comprising a valve; and wherein the electrolyte is present in an amount that ranges from 100 to 150% by volume based on the total pore volume of the separator. | 05-01-2014 |
20130145613 | Single Punch Method of Making Battery Plates for Lead-Acid Batteries - A method of making battery plates for lead-acid batteries includes providing a strip of material comprising lead; and punching material out of the strip to form a grid comprising wires having a non-rectangular cross-sectional shape by utilizing a die set comprising a plurality of male die components and female die components, wherein each of the male die components comprises a first portion having a first cross-sectional shape and a second portion having a second-cross sectional shape. A single punch of the material creates a hole in the material and also forms the periphery of the hole. | 06-13-2013 |
20130106427 | Battery Rating Method | 05-02-2013 |
20120328912 | WINDING ASSEMBLY FOR ELECTROCHEMICAL CELLS, METHODS OF MAKING THE WINDING ASSEMBLY, AND THE ELECTROCHEMICAL CELL - A winding assembly including positive and negative electrodes and a separator sheet wound in an overlying relationship such that the separator sheet is positioned between the positive and negative electrodes, and such that an exposed edge of the positive electrode is spaced longitudinally from an unexposed edge of the negative electrode at one end, and such that an exposed edge region of the negative electrode is spaced longitudinally from an unexposed edge of the positive electrode at an opposite end, and wherein a portion of the positive electrode proximate to the exposed edge of the positive electrode comprises a first plurality of apertures and a portion of the negative electrode proximate to the exposed edge of the negative electrode comprises a second plurality apertures. | 12-27-2012 |
20120251876 | ENERGY STORAGE DEVICES COMPRISING CARBON-BASED ADDITIVES AND METHODS OF MAKING THEREOF - The present invention is directed to energy storage devices, such as lead-acid batteries, and methods of improving the performance thereof, through the incorporation of one or more carbon-based additives. | 10-04-2012 |
20120171564 | ADVANCED GRAPHITE ADDITIVE FOR ENHANCED CYCLE-LIFE OF LEAD-ACID BATTERIES - An Advanced Graphite, with a lower degree of ordered carbon domains and a surface area greater than ten times that of typical battery grade graphites, is used in negative active material (NAM) of valve-regulated lead-acid (VRLA) type Spiral wound 6V/25 Ah lead-acid batteries. A significant and unexpected cycle life was achieved for the Advanced Graphite mix where the battery was able to cycle beyond 145,000 cycles above the failure voltage of 9V in a non-stop, power-assist cycle-life test. Batteries with Advanced Graphite also showed increased charge acceptance power and discharge power compared to control groups. | 07-05-2012 |