33results about How to "Capacity impact" patented technology

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a pore-forming method for diaphragms of lithium ion batteries. The method comprises the following steps: fully dissolving a pore-forming agent into a solvent so as to prepare a pore-forming agent solution; uniformly coating the pore-forming agent solution on the surface of a to-be-cold-pressed diaphragm, and carrying out baking on the diaphragm at a temperature lower than the sublimation or decomposition temperature of the pore-forming agent, so that a solvent of the pore-forming agent solution is volatilized, and the pore-forming agent is recrystallized in the diaphragm; and carrying out cold pressing on the diaphragm, and then carrying out baking on the diaphragm at a temperature higher than the sublimation or decomposition temperature of the pore-forming agent, so that the pore-forming agent recrystallized in the diaphragm is sublimated or decomposed, thereby obtaining a porous diaphragm. According to the invention, through regulating the viscosity of the pore-forming agent solution, a diaphragm with adjustably-distributed pores can be obtained, and the regulating method is simple and flexible, and wide in applicable range; and particularly, according to the invention, an efficient gradient pore distribution structure that more pores are distributed on the surface layer of the diaphragm and less pores are distributed on the inner layer of the diaphragm can be realized just through selecting an appropriate viscosity of the pore-forming agent solution..

The invention relates to a production technology of a metallized film. The production technology is characterized in that an insulation base film is performed with an insulation base film pretreatment technology, a primary evaporation technology, a galvanized layer surface treatment technology, a secondary evaporation technology and a silver plating layer surface treatment technology, so as to form the metallized film. The production technology has the advantages that the surface of the insulation base film is treated by hydrosulphuric acid solution, so that the large-scale oxidizing of metal zinc on the surface of the insulation base film is avoided, the bonding force between a zinc plating layer and the insulation base film is guaranteed, and the self-healing capability of the metallized film is improved; a metal layer on the surface of the insulation base film is of a zinc plating layer, zinc oxide layer, silver plating layer and silver oxide oxide film four-layer structure, so that the erosion rate of the metal layer is effectively reduced, the capacity of a capacitor is not decreased, and the breakthrough accident is avoided; the service life of the metal layer is obviously prolonged.

The invention discloses a tire cushion for preventing a vehicle from reversing when the vehicle climbs a slope. The tire cushion for preventing the vehicle from reversing when the vehicle climbs the slope is a device which prevents the vehicle from reversing when the vehicle climbs the slope in a mode similar to a mode of manually padding a vehicle tire with stone. The tire cushion for preventing the vehicle from reversing when the vehicle climbs the slope is arranged on the vehicle, uses actions of gravity, can continuously work, prevents the vehicle from reversing, and further achieves a safe guarantee function to a certain extent especially under the abnormal conditions that a brake fails, a half shaft is fractured and the like.

The invention relates to a metalized film used for a rail transit locomotive and a processing technology thereof. The processing technology comprises the steps of insulation basal film pretreatment, primary evaporation for preparing an aluminum coated layer, insulation basal film secondary treatment and performing secondary evaporation on the aluminum coated layer for composite preparing a tin coated layer. Oxidation of the aluminum coated layer can be effectively prevented by the tin coated layer, and sharp declining of the capacity of the capacitor does not occur in working under the AC high voltage and high current. The subsequent capacity of the capacitor does not influenced even insulation defects exist on the insulation basal film; and continuous breakdown of the multilayer insulation basal film does not occur in case of self-healing so that the phenomenon of large-area burning can be avoided. Therefore, the capacitor prepared by coiling of the metalized film can be massively applied to the rail transit locomotive to act as the energy storage component.

Sensor (32) for injection molding machines or extruders comprises a probe (42) and an integral processing unit (44). The processing unit categorizes the signals it receives from the probe by comparison with a classification table and sends an error signal to a control unit if a defect is detected. An independent claim is included for: a method for operating a sensor, as described.

The invention provides a battery management system of an electric vehicle and a control method of the battery management system, and aims to solve the problem of performance influences of pure electric vehicle power batteries due to high temperature. The battery management system of the electric vehicle comprises a temperature monitoring device connected with a battery compartment of the electric vehicle, used for monitoring battery temperature in the battery compartment and sending the battery temperature to a master control device, a refrigeration circulation channel connected with the battery compartment of the electric vehicle and used for refrigerating a battery in the battery compartment by a circulating refrigerant, the master control device respectively connected with a collecting device and the refrigeration circulation channel, used for controlling the refrigerant to refrigerate the battery in the battery compartment circularly in the refrigeration circulation channel when the battery temperature exceeds the preset upper limit value. The battery management system of the electric vehicle and the control method of the battery management system can reduce influences on the service life and the capacity of the battery due to the high temperature and prolong the service life of the battery.

The invention relates to a processing technique of a metallized film. Corona discharge pretreatment is conducted on an insulating base film twice, and then primary evaporation, surface treatment of a zinc coating, secondary evaporation, and surface treatment of an aluminized coating are conducted, so that the metallized film is obtained. The bonding strength of a metal layer of the metallized film and the insulating base film is high, and the alternating voltage resistance is remarkably improved; the metal layer is of a four-layer structure including the zinc coating, an zinc oxide coating, the aluminized coating and an oxide film so that the corrosion rate of the metal layer can be effectively decreased, the capacity of a capacitor cannot be decreased even if the zinc coating is corroded, the adaptability to high high-voltage alternating currents cannot be affected, insulating defects are avoided, and the breakdown accidents are avoided; and according to the processing technique of the metallized film, the processing technique is simple, the loss of the zinc coating is reduced, the production efficiency is high, the production cost is low, and the service life of the metallized film is long.