Abstract: The present invention provides a high-energy-density secondary lithium-ion battery, including: a lithium-ion cell, a steel shell, a protection IC, an integrated IC, resistors, capacitors, an inductor, a MicroUSB interface, a plastic structural part, a square rigid FR-4 substrate, a circular rigid FR-4 substrate and a metal cap, for integrating three functions of a constant voltage output, charge management and protection, overcharge and overdischarge protection, and overcurrent protection. Compared with the prior art, the large-capacity secondary battery of the present invention can achieve multi-functional integration of the battery, and also can save the space occupied by accessory structural parts of the battery and achieve a high energy density of the battery, and is also conducive to improving the reliability.

Abstract: The invention provides a preparation method of the matrix material for the gas diffusion layer of a fuel cell. The matrix material is obtained on the polyurethane sponge through the following process: conductively treating, electroplating, dissolving nickel by electrolysis, heat-treating, tungsten-nickel alloy electroplating, heat-treating, rolling. The mass content of the metal nickel of the matrix material is 88˜92%, and the mass content of the metal tungsten is 8˜12%. The material prepared by the invention has a high specific surface area, excellent thermal conductivity and gas permeability performance, excellent electrical corrosion resistance and oxidation resistance. After being prepared as the gas diffusion layer, as the diffusion layer and fuel cell electrode are closely connected, the material can effectively resist the electrochemical corrosion of the diffusion layer caused by the electrochemical reaction and is suitable for the matrix material of the gas diffusion layer.

Abstract: The invention provides a matrix material for the gas diffusion layer of the polymer electrolyte membrane fuel cell, which is composed of three-dimensional porous and strip-shaped hexagonal chambers connected to each other, wherein the six-sided ribs are composed of two metal layers, the inside is metal nickel, and the outside is tungsten-nickel alloy. The total mass of metal per square meter of the material is: 1500˜3000 grams, the mass content of metal nickel in the material is 88˜92%, the mass content of metal tungsten is 8˜12%, and the rest are impurities; the thickness of the matrix material is 0.1˜0.2 mm, specific surface area is (1˜2)×105 m2/m3; longitudinal air permeability ?2000 m/mm/(cm2hmmAq), longitudinal thermal conductivity ?1.7W/(m·k), transverse thermal conductivity ?21W/(m·K). The porous nickel-tungsten metal material of the invention, as the matrix material of the gas diffusion layer, has the advantages of lower electrical resistance and higher strength compared with carbon paper.

Abstract: The present invention provides a large-capacity secondary battery, including: a rechargeable cell, a steel shell, a protection IC, an integrated IC, resistors, capacitors, an inductor, an LED lamp, a plastic part, a circular rigid FR-4 substrate, a metal cap, an insulation pad and an insulation heat shrink film, for integrating multiple functions of a constant voltage output, charge management and protection, and overcharge, overdischarge and overcurrent protection. Compared with the prior art, the large-capacity secondary battery of the present invention can achieve multi-functional integration of the battery, and also can save the space occupied by accessory structural parts of the battery and achieve a large capacity of the battery.

Abstract: The present invention provides a high-energy-density secondary lithium-ion battery, including: a lithium-ion cell, a steel shell, a protection IC, an integrated IC, resistors, capacitors, an inductor, a MicroUSB interface, a plastic structural part, a square rigid FR-4 substrate, a circular rigid FR-4 substrate and a metal cap, for integrating three functions of a constant voltage output, charge management and protection, overcharge and overdischarge protection, and overcurrent protection. Compared with the prior art, the large-capacity secondary battery of the present invention can achieve multi-functional integration of the battery, and also can save the space occupied by accessory structural parts of the battery and achieve a high energy density of the battery, and is also conducive to improving the reliability.

Abstract: The present invention provides a large-capacity secondary battery, including: a rechargeable cell, a steel shell, a protection IC, an integrated IC, resistors, capacitors, an inductor, an LED lamp, a plastic part, a circular rigid FR-4 substrate, a metal cap, an insulation pad and an insulation heat shrink film, for integrating multiple functions of a constant voltage output, charge management and protection, and overcharge, overdischarge and overcurrent protection. Compared with the prior art, the large-capacity secondary battery of the present invention can achieve multi-functional integration of the battery, and also can save the space occupied by accessory structural parts of the battery and achieve a large capacity of the battery.

Abstract: A cylindrical battery comprises a cylindrical battery electrode assembly having two ends, which comprises a core bar, a positive plate and a negative plate coiled on the core bar, and a diaphragm separating the plates. The cylindrical battery also comprises a positive electrode lead-out terminal, disposed at one end of the electrode assembly and having an inner end surface facing the same. The inner end surface of the positive electrode lead-out terminal is directly connected with the entire end of the positive plate at the corresponding end of the electrode assembly. The cylindrical battery further comprises a negative electrode lead-out terminal, disposed at the other end of the electrode assembly and having an inner end surface facing the same. The inner end surface of the negative electrode lead-out terminal is directly connected with the entire end of the negative plate at the corresponding end of the electrode assembly.

Abstract: Provided is a cylindrical battery, comprising a cylindrical battery electrode assembly which is formed by coiling a positive plate and a negative plate separated by a diaphragm and is coiled on a core bar. The cylindrical battery is characterized in that an inner end surface of a positive electrode lead-out terminal located at one end of the cylindrical battery electrode assembly is directly connected with the entire end of the positive plate at the corresponding end of the cylindrical battery electrode assembly, and an inner end surface of a negative electrode lead-out terminal located at the other end of the cylindrical battery electrode assembly is directly connected with the entire end of the negative plate at the corresponding end of the cylindrical battery electrode assembly, so that a bus structure is formed in such a manner that the positive and negative electrode lead-out ends are respectively disposed at two ends of the battery.