36results about How to "Increased energy-to-weight ratio" patented technology

The invention discloses a method for manufacturing a high-specific-energy lead-acid battery, which belongs to the technical field of lead-acid battery manufacturing. By improving the battery manufacturing process, reducing the weight of the grid, increasing the oxidation degree of lead powder, using special paste equipment, making appropriate adjustments to the past paste process, increasing the paste weight, improving and optimizing the plate curing and drying process, Improve the formation method to achieve high specific energy lead-acid batteries with good production quality, process control and battery performance requirements. This kind of battery can significantly increase the specific capacity of the battery, and also increase the specific energy of the battery by reducing the weight of inactive materials.

The invention discloses a method for recovering lead plaster of the negative pole of a disused lead acid storage battery and application of the recovered lead plaster. A preparation method of superfine lead powder comprises the following steps: firstly, a disused battery is fully charged; secondly, the lead plaster of the negative pole is separated from the lead acid storage battery; thirdly, the main substance of the lead plaster of the negative pole is changed into a lead raw material mainly composed of PbO and Pb via high temperature and humidity solidification; and lastly, dry grinding or crumbling of the lead raw material is carried out under the condition of oxygen, or wet treatment is carried out by using organic salt and organic acid to obtain superfine lead powder. The recovery method disclosed by the invention is low in cost, simple and convenient in process, high in recovery rate of lead, low in energy consumption and easy to achieve industrialization, and causes minor pollution to the environment during recovering the lead. The method directly prepares superfine lead powder which can be directly used to produce storage batteries. The superfine PbO powder prepared by the method has good performance, is high in technology added value, and can obtain a battery pole plate which has high electrochemistry capacity and a long charging / discharge service life.

The invention discloses a porous graphite electrode for lead-acid battery, wherein an electrode plate is made of a porous graphite material; the electrode plate is in a tubular graphite structure formed by connecting a plurality of graphite tubes into a whole, active substances are filled in the graphite tubes, the wall thickness of each graphite tube is 0.4-1.0 mm, and the porosity of porous graphite is 40-60%. The electrode is used for manufacturing the lead-acid battery, can guarantee that the active substances do not fall off, and increase the contact area with the electrode plate, and then can be used for improving the conductivity and service life of the battery; and meanwhile, graphite replacing a lead alloy is used as the electrode plate, therefore, the lead pollution can be greatly reduced, the weight of the battery can be reduced, the gravimetric specific energy of the battery can be improved, and the production cost is reduced.

A high-energy colloidal lead cloth battery and a manufacturing method thereof. Positive and negative plates and AGM diaphragms are assembled in a battery tank, the positive and negative grids are made of lead cloth or foamed lead, and the electrolyte filled in the battery tank is a colloidal electrolyte. , The colloidal electrolyte is composed of fumed silica, stabilizer, phosphoric acid, active additives, dilute sulfuric acid, and pure water. It has good thixotropy and rheology without delamination. The colloidal lead-cloth battery of the invention has high specific energy, long service life, not easy to lose water, good reliability, can be placed in any direction, no electrolyte escape, environmental protection and good safety performance.

The invention relates to a lead-acid storage battery pole plate and a preparation method thereof, and belongs to the technical field of lead-acid storage batteries. The lead-acid storage battery pole plate comprises a grid and an active material layer coated on the grid, wherein the grid comprises a substrate; mesh openings are formed in the surface of the substrate; a plate lug is connected with the edge of the substrate; a non-conductor frame used for limiting the active material layer on the substrate is arranged at the edge of the substrate; and the non-conductor frame protrudes out of the substrate. The invention also discloses a preparation method of the lead-acid storage battery pole plate, and comprises the steps of lead alloy smelting, grid forming, grid pasting, pole plate solidifying and pole plate drying, wherein the grid forming process comprises the steps of manufacturing the grid through a cold pressing mode and then assembling the grid and the non-conductor frame. As the substrate and the non-conductor frame are organically combined, more active materials can be coated on the thin and light substrate, and a thick and light plane pole plate with high capacity is obtained.

The present invention discloses a container formation lead-acid battery technology, comprising the following process steps: firstly manufacturing a lead powder and a grid, mixing lead powder, dilute sulfuric acid and an additive, coating the mixture on the grid surface, drying and solidifying to form a positive pole plate and a negative pole plate. The positive pole plate and the negative pole plate are reacted with dilute sulphuric acid under the action of direct current to generate active substance by a redox reaction. The positive electrode plate and the negative plate used for battery assembly are formed by washing and drying. Finally based on an interval arrangement principle, a partition plate is arranged between the positive electrode plate and the negative plate to prepare into an electrode crowd which is then filled into a battery casing. The grid is manufactured by using continuous casting and rolling. The container formation lead-acid battery technology can reduce gravimetric specific energy thereof under the premise of reducing the total weight of the battery, and improve the utilization rate of active materials. The increase of amount of electrolyte helps to increase the thermal capacity of the battery. The disadvantage of battery capacity limited by the electrolyte is prevented, and the probability of thermal runaway is also effectively reduced, so that the product is suitable for southern hot regions.

A self-supporting composite electrode belongs to the field of electrochemical energy storage. The composite electrode has an array through-hole structure in the direction perpendicular to the surface of the composite electrode, and the composite electrode is composed of a composite nanosheet composed of carbon nanosheets and electrochemical energy storage active materials, wherein the carbon nanosheets constitute the conductive support of the composite electrode The skeleton and the non-carbon electrochemical energy storage active material are deposited on the surface of the carbon nanosheets, and the composite nanosheets are stacked layer by layer in a direction perpendicular to the surface of the composite electrode. The invention has the advantages that: the array vertical through-hole structure provides a smooth diffusion channel for the ions in the electrolyte, and greatly shortens the diffusion distance of the ions in the electrolyte in the electrode. The composite dense electrode of carbon nanosheets with this array through-hole structure and active materials for electrochemical energy storage has high rate performance, high area specific capacity and high volume specific capacity.