38results about How to "Improves deep cycle performance" patented technology

The invention belongs to the field of metallurgy, and relates to a lead-antimony rare-earth positive grid alloy and a preparation method thereof. The alloy comprises the following metal elements in percentage by mass: 0.5 to 1 percent of antimony, 0.005 to 0.1 percent of lanthanum, 0.005 to 0.1 percent of samarium, and the balance of lead. The preparation method comprises the following steps: preparing lead-lanthanum and lead-samarium alloy as master alloys; adding pure antimony into molten lead, stirring until the pure antimony is completely molten; and adding the lead-lanthanum and lead-samarium master alloys to perform mixed melting to prepare the lead-antimony rare-earth positive grid alloy. Grains of the prepared alloy become fine, uniform and regular, so that the comprehensive mechanical performance of the alloy can be improved, the impedance of an oxide film can be reduced, and the charge and discharge acceptance and deep cycle performance of a storage battery can be improved. Meanwhile, rare-earth element serves as an additive to prepare the lead-antimony grid alloy, arsenic, cadmium and other elements harming the environment and workers on the forefront of production severely are not contained. Therefore, lead alloy pollution can be reduced furthest.

The invention belongs to the technical field of accumulators, and in particular relates to a lead paste composition internalized into a positive electrode of a battery. The internalized battery cathode lead paste composition of the present invention is made of the following raw materials in parts by weight: 990-1010 parts of lead powder, 0.5-1.5 parts of fiber, 0.5-1.0 parts of phosphoric acid, 1-2 parts of antimony trioxide, and 0.7 parts of zinc oxide. ~1.2 parts, 0.5~1.5 parts of aluminum oxide, 0.5~0.8 parts of ammonium bicarbonate, 0.3~0.5 parts of cerium hydroxide, 0.7~1.5 parts of tin oxide, 110~130 parts of water, 80~90 parts of dilute sulfuric acid. The invention improves the anode lead paste composition so as to suppress the early stage capacity decay of the internalized battery and prolong the service life of the deep cycle discharge of the battery.

The invention discloses a long-service-life deep-cycle lead-acid battery positive grid alloy which is composed of the following raw materials in percentage by mass: 0.05-0.12% of calcium, 0.1-2.0% of tin, 0.01-0.1% of aluminum, 0.01-0.2% of zinc, 0.01-0.2% of silver and the balance of lead. The alloy has favorable corrosion resistance, and does not influence the deep cycle performance of the battery. The addition of the zinc can well enhance the deep cycle performance and low-temperature properties of the battery. The addition of the silver can enhance the corrosion resistance of the grid alloy; and the comparison between Figure 1 and Figure 2 indicates that the silver can be enriched at the grain sub-boundary and grain boundary along with the tin, and the silver enriched at the grain boundary can enhance the corrosion resistance of the grain boundary, thereby prolonging the service life of the alloy grid.

The invention relates to the technical field of photovoltaic power generation, in particular to a power generation capacity optimization system of a photovoltaic power station. The system comprises aphotovoltaic module for absorbing sunlight and converting solar radiation energy into electric energy, wherein the photovoltaic module is formed by connecting solar cells in series or in parallel; a storage battery pack for storing the electric energy generated by the photovoltaic module, wherein the photovoltaic module is connected with the storage battery pack through a photovoltaic controller to perform over-charge and over-discharge protection for the storage battery pack; an inverter connected with the storage battery pack to convert a direct current to an alternating current; and a cooling cycle unit connected with the photovoltaic module to perform cooling and temperature reduction of the photovoltaic module. The photovoltaic module is cooled by cooling water circulation to greatlyimprove the utilization of the photovoltaic module, optimize the power generation system of the photovoltaic power station and improve the power generation efficiency.

The invention discloses a storage battery electrode plate with carbon fiber membrane colloid laminated on a surface layer and a preparation method. A positive electrode plate comprises a substrate and the surface layer, wherein the surface layer is formed in a laminating manner and mainly comprises the following components in percentage by mass: 95%-98% of lead (Pb), 0.06%-0.15% of calcium (CA), 0.03%-0.1% of stannum (Sn) and 1%-5% of a carbon fiber; and a carbon fiber membrane is prepared from the following components by mass fraction: 52%-67% of carbon (C), 12%-22% of graphene, 8%-21% of a PTFE binder and the balance being inevitable impurities. The electrode plate disclosed by the invention has relatively high heavy current discharge performance and relatively high hydrogen-evolution and oxygen-evolution over-potential, so that a storage battery electrolyte is relatively stable and free of maintenance.