36results about How to "Improve mass to energy" patented technology

The invention relates to a preparation method of a positive pole material of a thermal battery, which comprises the following steps: (1) performing forced air drying; (2) performing vacuum drying in a vacuum drying box; (3) containing in a quartz tube, and placing in a crucible resistance furnace for high-temperature treatment; (4) taking out the material which becomes a pole billet out of the quartz tube, and smashing; and (5) weighing nickel chloride treatment powder prepared in (4) according to the proportion, stirring a conductive agent after drying with a molten salt after drying, and preparing the positive pole material of the thermal battery. Commercially available nickel chloride hexahydrate is adopted as a raw material, the forced air drying and the vacuum drying are performed, and the high-temperature treatment is performed on the dried material after smashing and screening; the loose density and the tap density of the material after treatment are improved, the electrical conductivity and the thermal conductivity of the material are improved, and the electrochemical activity of the material is improved; and the weight of water contained in the material is reduced to 1000PPM from 5% before drying. The process is simplified and stabilized, the equipment investment cost is low, and conditions are created for realizing the industrialization of the positive pole material of the thermal batteries.

The invention discloses a horizon battery and a manufacturing method thereof. Grid of existing horizon batteries is woven by glass fiber and lead composite. Lead layer on the surface of the grid is corroded fast, and conductivity is lowered when the lead layer is corroded. The horizon battery comprises a battery shell and an upper cover. A plurality of battery plate groups and partitions for blocking electrolyte circulation among the battery plate groups are disposed in the battery shell. Leading-out terminals connected to the battery plate groups are disposed at two ends of the battery shell. The battery plate groups comprise positive plates and negative plates which are alternately stacked, porous partition plates are disposed between the positive plates and the negative plates, and each positive plate and each negative plate comprise a plastic grid frame and a grid framework. The grid framework is made of lead alloy, and high in strength, corrosion resistance and conductivity. By the grid frame, usage of lead alloy is reduced, mass of the grid is lowered, and mass ratio energy of the horizon battery is improved.

The invention provides a cathode active material and a preparation method thereof and a lithium ion secondary battery prepared by the cathode active material. The preparation method comprises the following steps: mixing spherical oxides and rod-like oxides to obtain mixed oxides, performing ball milling and mixing of the mixed oxides in an N-methyl pyrrolidone solution of polyvinylidene fluoride with a mass fraction of 4% for 1 hour, adding lithium titanate and performing ball milling and mixing for 3 hours to obtain slurry, heating the slurry, stirring at 170 DEG C till the slurry is dried to obtain a titanium composite material, roasting the titanium composite material at 600 DEG C for 24-72 hours in Ar or N2 atmosphere or under vacuum, cooling to room temperature to obtain the cathode active material; the obtained cathode active material has the characteristic of dense and uniform coating layer, can effectively reduce the contact of lithium titanate and water; because of the nano-scale particle sizes of the oxides, the oxides can effectively coat lithium titanate, and thus avoid the generation of swollen phenomenon to the maximum extent, and facilitate the improvement of the cycle life, the storage performance and the security of the lithium ion secondary battery.

The invention belongs to the technical field of lead-acid batteries, and in particular relates to a polar plate of a bipolar battery and a preparation method thereof. The bipolar battery plate includes a bipolar grid, a positive active material and a negative active material, and the bipolar grid is composed of titanium foil and copper plate, and the bipolar grid is positively The lead layer is electroplated on both sides of the negative electrode at the same time, and then the bipolar battery plate prepared by filling the positive active material and the negative active material has high power, high mass specific energy, less gas evolution, strong mechanical strength and corrosion resistance. The current and potential distribution of the plate is uniform; the preparation method of the invention can reduce production costs, reduce environmental protection pressure and improve battery performance.

The invention relates to a thin-type soft packaging super capacitor, which comprises a soft packaging thin film, electrolytic solution, a capacitor chip, an anode ear and a cathode ear, wherein the capacitor chip comprises an anode piece, a porous isolation film and a cathode piece which are mutually overlapped together in turn, the end potion of one end of each anode piece is provided with a blank anode current collector, the blank cathode current collector is arranged on the end portion of one end of each cathode piece, and the anode ear and the cathode ear are arranged on two ends of the capacitor chip. The thin-type soft packaging super capacitor effectively increases the thickness and the overall area of the pole ear, reduces heating capacity, avoids short circuit between the anode ear and the cathode ear, and lowers welding thickness. And the super capacitor has the characteristics of high energy density, safe use and convenient welding and processing, and is suitable for big current to charge and discharge.

The present invention provides a bifunctional electrode, a preparation method and applications thereof. The bifunctional electrode comprises a current collector and a hydrogen evolution-oxygen reduction bifunctional catalyst, wherein the catalyst is made of one selected from noble metals such as palladium and platinum, and uniformly grows on a hemispherical metal layer, the metal layer grows on anelectric-conduction foam metal through electroplating, the surface of the metal layer is oxidized into a metal-electroplated hydroxide, two cathodes are opposite to an anode in a battery monomer to form a sandwich-like configuration, and the cathodes and the anode are fixed by a battery shell. According to the present invention, the advantages of magnesium-water batteries and magnesium-dissolvedoxygen batteries are effectively combined, wherein the discharging is performed by using the working principle of the magnesium-dissolved oxygen battery during the low-current discharging so as to achieve the high discharging voltage and the high specific energy, and the discharging is performed by using the working principle of the magnesium-seawater battery under the condition of high current orinsufficient dissolved oxygen so as to ensure the normal working of the battery and effectively improve the stability of the battery.

The invention discloses a thermal management system of an electric automobile, comprising a temperature sensor, a heating and cooling device and a central processing unit, wherein the temperature sensor is used for acquiring the temperature of components generating the raising and the drop of temperature in the electric automobile; the heating and cooling device is used for generating a heat source and a cold source which are transmitted to components needing heating and cooling and is connected with the signal output end of the central processing unit through a control switch; and the central processing unit is used for receiving a signal of the temperature sensor and calculating and outputting the control signal to the heating and cooling device. In the invention, the temperature conditions of various components can be detected by using the temperature sensor and are transmitted to the central processing unit which controls the temperature in time so as to ensure that the temperatures of various components are in a proper range. The system not only can be used for monitoring the temperature of batteries, but also can be used for monitoring the temperature of a motor and a motor controller, thereby avoiding the motor and the motor controller from being damaged due to overhigh temperature. The system can also be used for monitoring the temperature in a carriage and ensures thecomfort degree of the moving space of people.

The invention relates to an ultra-thin secondary battery and a preparation method thereof, belonging to the field of electrochemistry. The thickness of the ultra-thin secondary battery designed by the present invention is 0.3-1.0mm; It comprises separator, positive electrode diaphragm, negative electrode diaphragm; direct contact; the diaphragm is composed of a substrate and a conductive layer); the conductive layer is located on one side of the substrate, and the conductive layer is in direct contact with the positive electrode diaphragm. The preparation method is as follows: first, according to the set size, respectively coat the positive electrode slurry and the negative electrode slurry on the front and back surfaces of the separator, dry and roll to obtain the separator with the positive electrode diaphragm and the negative electrode diaphragm; Pressing, so that the positive electrode current collector and the negative electrode current collector are in close contact with the positive electrode diaphragm and the negative electrode diaphragm respectively. Finally, the packaging film is used for packaging according to the designed size, followed by vacuum dehydration, electrolyte injection, sealing, activation, shaping, secondary packaging, and volume separation to obtain an ultra-thin secondary battery.

The invention discloses a method for preparing a titanium-iron-lithium battery, a method for preparing a titanium-iron-lithium battery. The method prepares a titanium-silicon-carbon negative electrode slurry and a lithium iron phosphate positive electrode slurry, and then prepares the lithium iron phosphate positive electrode The slurry and the titanium-silicon-carbon negative electrode slurry are uniformly coated on the positive electrode current collector and the negative electrode current collector respectively, dried and pressed to obtain positive and negative electrode sheets, and finally assembled to obtain a titanium-iron-lithium battery; thus, the present invention uses titanium-silicon carbon as the negative electrode The material can use the "shell", "core" and "pomegranate coat" in the "shell core pomegranate structure" of titanium silicon carbon to ensure that the titanium silicon carbon negative electrode material is more stable and reliable than conventional graphite during charge and discharge, thereby further Improve the safety and reliability of the battery, prolong the cycle life of the battery, and improve the mass specific energy of the battery.