31results about How to "Increase the number of charge and discharge cycles" patented technology

The invention discloses lithium ion secondary battery positive electrode materials of a kind of aromatic heterocyclic ketone compounds. The lithium ion secondary battery positive electrode materials of the aromatic heterocyclic ketone compounds are ketone compounds taking an aromatic heterocyclic ketone or ketone quinine as an electrochemical oxidation reduction position point. The lithium ion secondary battery positive electrode materials comprise aromatic heterocyclic ketone derivatives and aromatic heterocyclic ketone quinine derivatives, the aromatic heterocyclic ketone derivatives and the aromatic heterocyclic ketone quinine derivatives take part in the preparation of an electrode in the mode of micromolecules or clusters in an amorphous state or in the mode of micro crystal and nanometer crystal in the phase state of alpha, beta and gamma or in the mixed phase state, and in the cluster form of the aromatic heterocyclic ketone derivatives and the aromatic heterocyclic ketone quinine derivatives, corresponding structural units are directly connected through C-C keys or a multi-key ring-combination structure. The lithium ion secondary battery positive electrode materials are provided with a dicarbonyl birdging conjugate aromatic framework, and comprise the following structure shown in the formula: . The lithium ion secondary battery positive electrode materials of aromatic heterocyclic ketone compounds has the advantages that (1) structure is abundant, and materials are low in cost and easy to obtain; (2) energy density, multiplying power density and cycling stability are high; (3) 80% of initial capacity is still kept after cycling is conducted for 150 weeks.

The invention provides a power source used for an electric vehicle. The power source comprises a high-voltage battery and a direct current converter. The direct current converter comprises a power source input anode end, a power source input cathode end, and an enable signal end used for starting the direct current converter. The anode end of the high-voltage battery is electrically connected with the power source input anode end. The cathode end of the high-voltage battery is electrically connected with the power source input cathode end. A start controlling relay is arranged between the anode end of the high-voltage battery and the enable signal end. The direct current converter comprises a direct current converting module, an equipment power supply power source output end, and a normal power source output end. The normal power source output end can still provide power for constant electric equipment under the condition that the direct current converting module does not work.

The invention belongs to the technical field of storage batteries, and specifically relates to a lead plaster composition of a positive electrode of an internally formalized storage battery. The lead plaster composition of the positive electrode of the internally formalized storage battery is prepared from the following raw materials in parts by weight: 990-1010 parts of lead powder, 0.5-1.5 parts of fibers, 0.5-1.0 part of phosphoric acid, 1-2 parts of antimonous oxide, 0.7-1.2 parts of zinc oxide, 0.5-1.5 parts of aluminum oxide, 0.5-0.8 part of ammonium hydrogen carbonate, 0.3-0.5 part of cerium hydroxide, 0.7-1.5 parts of tin monoxide, 110-130 parts of water and 80-90 parts of dilute sulphuric acid. The lead plaster composition of the positive electrode is improved, so that capacity attenuation of the internally formalized battery in the early stage is inhibited, and the service life of deep circular discharge of the battery is prolonged.

The invention discloses a lithium battery liquid injection system and a lithium battery liquid injection method. The lithium battery liquid injection system comprises a conveyor and a working frame for fixing the conveyor, the system also comprises a liquid injection device, a charging device and a vacuumizing device, and trays are arranged on a conveyor belt of the conveyor at intervals; and a plurality of battery cells are placed on each tray. According to the liquid injection method of the system, reasonable liquid injection and vacuumizing times are adopted, and after the charging procedure is added, the chemical electrolyte reacts in advance, so that gas in the battery is effectively discharged, the internal pressure of the battery is reduced, the battery is safer, the battery capacity is increased, the circulating charging and discharging times are increased, and the service life is prolonged.

The invention provides an aircraft and a structure battery component of the aircraft, and belongs to the technical field of the aircraft overall design. The structure battery component can play the function of bearing force and/or storing power at the same time, thereby effectively reducing the total weight when the structure and the battery are mutually independent; the structure battery component can be applied to the aircraft to realize the weight reducing of the aircraft structure system and the battery system. The aircraft is the aircraft with the structure battery component; one structure battery component comprises wing ribs on at least two ends and skin at the periphery; the wing rigs are arranged at two ends of the skin; the skin is at least a multi-layer board with one function overlay; the function overlay has a bearing function, and further has a power supply and/or power storage function; the designability of the composite material structure is sufficiently utilized, the force-bearing structure and the power supply and/or power storage battery are integrated; the structure battery component with the force-bearing, the power supply and/or power storage functions is usedfor realizing the lightweight of the aircraft, and more task load weight can be gotten in return, and the aircraft performance is improved.

The invention provides an acid and glue pouring machine for accumulators and relates to the glue and acid pouring machine for the accumulators, which is used for quantitatively pouring glue and acid in accumulator production. The acid and glue pouring machine for the accumulators comprises a motor controlled by a microcomputer, wherein the output end of the motor is connected with a lifting shaft which is connected with an active plate; the active plate is provided with a plurality of hollow amount-adjusting shafts; the lower part of each amount-adjusting shaft is provided with a quantitative hammer matched with the amount-adjusting shaft; the amount-adjusting shaft extends into the hollow space of the quantitative hammer; and the quantitative hammer is fixed on a machine frame. In the invention, the motor on the top of the glue pouring machine is effectively controlled by the microcomputer to accurately control the pouring amount of glue. The glue pouring machine of the accumulator provided by the invention successfully performs quantitative control over the pouring amount of glue in the accumulators, overcomes the defect of inconsistent glue amount of the accumulators in a glue pouring process, effectively reduces the error of the glue pouring amount and prolongs the service life of the accumulators.

The invention provides a bifunctional oxygen electrocatalyst taking a hollow carbon nanotube as a carrier and preparation. A dopamine hydrochloride coated halloysite nanotube as a precursor, a hollow carbon nanotube is acquired through heat treatment and acid pickling, then nickel-cobalt metal oxide is added, a NiCo-LDH nanosheet is grown and formed on the surface of the hollow carbon nanotube carrier, after heat treatment, a highly-ordered hollow NC@ NiCo2O4 nano composite material is formed and is used as a catalyst with oxygen reduction performance and oxygen evolution performance in a metal-air battery. The invention also provides an application of the difunctional oxygen electrocatalyst in the metal-air battery. According to the bifunctional oxygen electrocatalyst, the halloysite nanotube and the dopamine hydrochloride are combined to construct the nitrogen-doped hollow carbon nanotube, and the metal oxide NiCo2O4 and the hollow carbon nanotube are combined into a whole so that the catalytic activity of a catalyst ORR and the catalytic activity of a catalyst OER can be remarkably improved, a noble metal oxygen electrocatalyst is replaced, the cost of the catalyst and a metal-air battery is reduced, and good commercial application prospects are realized.

The invention provides a buffer charging circuit of a lithium battery. The buffer charging circuit comprises a charger interface, a battery interface, a charging circuit connected with the charger interface and the battery interface, a buffer timing circuit and a supplementary circuit. The charging circuit comprises a low-current charging circuit body formed by connecting a diode and a current limiting resistor in series and a high-current charging circuit body formed by connecting a diode and a normally open contact of a relay in series. The buffer timing circuit is an RC timer, and the normally open contact of the relay in the high-current charging circuit body is controlled to be closed by a triode. The supplementary circuit comprises a battery charging voltage detecting unit and a supplementary unit enabling the triode in the buffer timing circuit to be disconnected. The buffer charging circuit has the advantages that the problem that the lithium battery is charged with high currents instantly when the battery is in an undervoltage and over discharge state is solved, and the problem that when the lithium battery is charged with the high currents, virtual full charging is caused by ripples of charging voltages is solved; the service life of a power source is prolonged, and the number of cycles of charging and discharging is increased.

A lithium secondary battery, and more particularly, to a lithium secondary battery having improved performance by minimizing the content of impurities such as sodium in the battery.

The invention relates to the technical field of battery cathode materials and especially provides a preparation method of a lithium cobalt nickel manganese oxide cathode material. By selecting the rawmaterials during preparation of the lithium cobalt nickel manganese oxide cathode material and reasonably selecting and proportioning water solutions and organic solvents during treatment, the performance of the cathode material is effectively improved. The cathode material has stable charge-discharge property and low capacity attenuation rate, is increased in cyclic charge-discharge times and isprolonged in service life.

The invention discloses an adjustable water-soluble battery adhesive, which is prepared from the following raw materials in parts by weight: 2 to 5 parts of aliphatic dianhydride, 0.1 to 1 part of aromatic diamine, 15 to 20 parts of solvent and 1.5 to 2.5 parts of catalyst. According to the present invention, the oxygen group substituted biphenyl diamine is adopted as the aromatic diamine, such that the soft and hard chain segment structure distribution of the polyimide adhesive can be regulated and controlled, the compatibility with the aliphatic dianhydride can be increased, the adhesive can form the compact membrane structure, and the interface impedance of the battery can be reduced; according to the present invention, by using the aliphatic dianhydride and the 1, 2, 3, 4-tetrahydro-1-naphthalenesuccinic acid dianhydride, the flexibility of the polyimide is improved, the good mechanical stability and the appropriate viscosity are provided, and when the polyimide is applied to the negative electrode of the battery, the cycle performance of the battery under the high current density charge-discharge condition is improved, and the influence of the rapid charge operation on the service life of the battery is reduced.