92results about How to "Increase the flash voltage" patented technology

The invention discloses an electrolyte for an aluminum electrolytic capacitor. The electrolyte comprises the following components in percentage by weight: 15% to 20% of solute; 0.1% to 5% of oxide film stabilizer; 1% to 10% of breakdown voltage boosting agent; 0.1% to 3% of hydrogen absorption agent; 0.5% to 3% of surfactant; 5% to 10% of flame retardant; and balance, namely a solvent. After the flame retardant is added into the electrolyte, the aluminum electrolytic capacitor is less likely to burn after being ignited; and an appropriate amount of the breakdown voltage boosting agent, oxide film stabilizer and hydrogen absorption agent is added into the electrolyte, so that the breakdown voltage of the electrolyte can be increased, and the aluminum electrolytic capacitor can maintain stable and good characteristic parameters for a long time.

The invention discloses a producing method for a full-tantalum-gas sealed capacitor, belongs to a capacitor manufacture method and aims to provide a manufacture method for non-solid tantalum electrolytic capacitors. The method comprises calcining a green body with the press density ranging from 5.5g / cm3 to 7.5g / cm3 into an anode tantalum block, immersing the tantalum block in an electrolyte solution to perform electrochemical treatment according to a grading boosting mode, performing vacuum heat treatment on the anode tantalum block provided with dielectric oxidation film, immersing the anode tantalum in a phosphoric acid to perform secondary electrochemical treatment, cleaning and drying the anode tantalum block which is subjected to secondary electrochemical treatment, and packaging the anode block in a tantalum casing to be prepared into a capacitor product, putting the capacitor product in an aging device to perform heating and energizing aging. The capacitor product produced through the method has the advantages of being low in equivalent series resistance and impedance, small in leakage current and capacitance change and the like.

The invention relates to electrolysis solution and a preparation method thereof as well as a preparation method for an obtained aluminum capacitor. The electrolysis solution is composed by the components according to the following weight by parts: 38.5-85.7 wt % of primary solvent, 5-25 wt % of auxiliary solvent, 4-20 wt % of solute, 5-15 wt % of modified additive, 0.2-1 wt % of hydrogen eliminating agent and 0.1-0.5 wt % of waterproof combination agent. The primary solvent is glycol; the auxiliary solvent is one or more of tributyl phosphate, mono butyl ester phosphate, diglycol dibutyl ether; the solute is one or more of ammonium sebacate, 1.6-dodecyl ammonium bisgallic acid, 1.10-dodecyl ammonium bisgallic acid organic carboxylate. In the preparation method for the aluminum capacitor using the electrolysis solution, positive pressure and vacuum-pumping is required to be applied in an impregnation tank in an alternate recycle way with the recycle impregnation interval period being 20-60min.The electrolysis solution has the characteristics of high temperature resistance, high sparking pressure and strong corrosion resistance. The screw large capacitor has a service life of 8,000 hours at 105 DEG C or 2,000 hours at 125 DEG C.

The invention discloses a preparation method of a porous anode aluminum foil with a multi-stage mixed structure, and belongs to the field of aluminum electrolytic capacitors. Large-size aluminum metalhas a large specific surface area and high surface uniformity; small-size aluminum metal particles can play a role in supporting a three-dimensional structure during melting; high porosity of the electrode foil is maintained, meanwhile, an electron transmission channel is added, the aluminum substrate is coated with the large size aluminum and the small size aluminum particles in a mixed mode, anodic oxidation is conducted in an ammonium adipate or boric acid electrolyte, the porous electrode foil of a nano-micron multi-stage mixed structure can be obtained, and the electrode foil has high electrostatic capacity and low leakage current. The method can be used for large-scale industrial manufacturing, the specific volume of the anode aluminum foil for the aluminum electrolytic capacitor can be greatly improved, light weight and miniaturization of the aluminum electrolytic capacitor are promoted, and the comprehensive performance of the aluminum electrolytic capacitor is improved.

The invention provides novel electrolytic paper, a manufacturing method thereof, an electrolytic capacitor and a manufacturing method thereof. The electrolytic capacitor comprises a core package, wherein the core package comprises the novel electrolytic paper, the novel electrolytic paper has a cellular network structure, the cellular network structure is filled with a solute, and the solute can be dissolved in an electrolyte. Compared with the prior art, the novel electrolytic paper, the manufacturing method thereof, the electrolytic capacitor and the manufacturing method thereof solve a problem of poor impregnation effect through reducing the viscosity of the electrolytic and performing ultrasonic vibration impregnation. Meanwhile, a trace of solute used for adjusting the viscosity of the electrolytic and an additive are adsorbed on the electrolytic paper, the adsorbed solute is slowly released in the subsequent high-temperature aging and application after a capacitor product is assembled so as to improve the viscosity of the electrolytic and improve the sparking voltage and the safety performance.