2results about How to "Increase conduction rate" patented technology

This invention relates to a sodium-ion battery negative electrode sheet, its preparation method, and the battery itself, belonging to the field of sodium-ion battery technology. It solves the problem that existing sodium-ion battery negative electrodes cannot simultaneously meet the requirements of high rate of charge and high energy density. The negative electrode sheet includes: a current collector, a first active layer, and a second active layer; the first active layer is disposed on at least one side of the current collector; the second active layer is disposed on the side of the first active layer away from the current collector; wherein, the ratio of the specific surface area of ​​the first negative electrode active material to the second negative electrode active material is a, the ratio of the D50 of the first negative electrode active material to the second negative electrode active material is b, the ratio of the areal density of the second active layer to the first active layer is c, and the ratio of the porosity of the first active layer to the second active layer is d, where a, b, c, and d are all greater than 1, and 3.76 < a × b + c × d < 7.42. The negative electrode sheet of this invention can significantly improve the cycle performance of the battery cell under high rate charge and discharge conditions while ensuring high energy density of the battery cell.

The application relates to a high-power water-cooled radiator for electric power equipment, which comprises a water storage tank, an air conditioner exchanger for refrigerating water in the water storage tank is arranged on the top of the water storage tank, one side of the bottom of the water storage tank is connected with a water outlet pump through a water pipe, one side of the top of the water storage tank is connected with a water inlet pump, the output end of the water outlet pump is connected with a heat exchange assembly for being arranged on a circuit board of the electric power equipment, the output end of the heat exchange assembly is connected with the input end of the water inlet pump, the length of each heat exchange column is adjusted according to the shape of a heat dissipation component of the electric power equipment, so that the heat exchange columns are matched with the heat dissipation component of the electric power equipment, the temperature in the water storage tank is kept, the overall cooling efficiency is ensured, the heat exchange assembly can keep the maximum heat conduction efficiency through the flowability and high heat conductivity of the heat conduction liquid, and the heat exchange assembly and the electric power equipment are stably clamped through a clamping plate.