摘要:
Ein Akkumulator, insbesondere Bleiakkumulator, mit einem mehrere Zellen aufweisenden Gehäuse, einem das Gehäuse abschließenden Deckel (1) mehrere im Deckel (1) angeordnete, voneinander beabstandete Füllöffnungen (8), die durch mehrere Stopfen (10), von denen wenigstens zwei durch ein flexibles Verbindungselement (11) miteinander verbunden sind, mittels Steckverbindung verschließbar sind, zeichnet sich dadurch aus, das flexible Verbindungselement (11) jeweils so ausgebildet ist, dass der Abstand der miteinander verbundenen Stopfen (10) durch Verdrehen wenigstens eines dieser Stopfen (10) an den Abstand der zugeordneten Füllöffnungen (8) variabel anpassbar ist.
摘要:
The instant invention is directed to the use of lignin in thermoplastics (such as: ultra-high molecular weight polyethylene (UHMWPE)). In the first aspect of the invention, lignins are added to a lead acid battery separator comprising a microporous membrane including an ultra-high molecular weight polyethylene, a filler, and a processing oil. In the second aspect of the invention, lignins are used as a processing aid in thermoplastics.
摘要:
An electric accumulator, in particular of the lead acid type, comprising a container for the active elements that make up the accumulator arranged in one or more cells, and a cover (10) that closes said container, said cover having plugs (8) for sealing the access to each of the cells, said accumulator being equipped with at least one explosion-proof device for controlled venting of the gasses evolved within the accumulator during its operation. Said explosion-proof device comprises: a venting duct (83) for releasing the gas that is produced by one or more cells of the accumulator, and having a venting outlet (84) at one end of it; an element for sealing (9) the venting outlet having at least one flexible portion capable of sealing the venting duct (83) until a certain pressure is reached, above which said at least one flexible portion has one or more areas forming, in conjunction with the venting duct, micro-slits which allow the gas to escape when its pressure exceeds a pre-determined level, and whose width prevents the entry into the battery of any flames that develop outside the battery.
摘要:
A freestanding, microporous polymer sheet (30) is composed of a polymer matrix binding and electrically conductive matrix (52, 56). The polymer matrix preferably includes UHMWPE, and the electrically conductive matrix (52, 56) preferably contains one of a carbonaceous material and a metal oxide, or a combination thereof. The UHMWPE is of a molecular weight that provides sufficient molecular chain entanglement to form a sheet with freestanding characteristics. Multiple microporous sheets can be wound or stacked in a package filled with an electrolyte to function as electrodes in an energy storage device, such as a battery or an ultracapacitor.
摘要:
The invention concerns a battery separator comprising at least one first fibrous layer, at least one second fibrous layer, and at least one microporous polymer layer which is sandwiched between at least two fibrous layers, wherein said microporous polymer layer has an average pore size of less than 1 νm and wherein said at least one first fibrous layer has a thickness of at least 0.6 mm.
摘要:
A glass fiber separator material is disclosed. The separator is composed of a mass of intermeshed glass fibers substantially all of which have a fiber diameter not greater than about 20 νm, and at least 5 percent w/w of which have a fiber diameter less than 1 νm, and, distributed through the glass fibers, and from 0.2 percent w/w to 20 percent w/w of cellulose fibrils. The fibrils are from a slurry having a Canadian freeness sufficiently low that the separator material has a tensile strength greater than on otherwise identical separator where glass fibers having an average diameter greater than 1 νm replace the cellulose fibrils.
摘要:
The invention concerns a lead battery with improved performance comprising: a positive electrode (1) including lead oxide as active substance; a negative electrode (3) comprising lead foam as active substance; an electrolyte (9) consisting of a sulphuric acid solution; a separating element (5, 7) between the positive electrode and the negative electrode; and means for applying a load to the whole assembly perpendicularly to the electrode plane. In said battery at least one of the elements selected among the positive electrode, the negative electrode and the electrolyte has been modified such that the amount of sulphuric acid in the positive electrode represents at least 0.20 mol of H2SO4 per mol of active substance, and/or the amount of electrolyte in the negative electrode represents at least 0.20 mol of H2SO4 per mol of active substance.