52results about How to "Large discharge" patented technology

The present invention provides a positive electrode active material containing a composite oxide having a composition represented by a structural formula (1) given below:

Li_x(Ni_1-yMe1_y)(O_2-zX_z)+A  (1)

To provide a lithium-nickel-cobalt-manganese composite oxide powder for a positive electrode of a lithium secondary battery, which has a large volume capacity density and high safety and is excellent in the charge and discharge cyclic durability.

A positive electrode active material powder for a lithium secondary battery characterized by comprising a first granular powder having a compression breaking strength of at least 50 MPa and a second granular powder having a compression breaking strength of less than 40 MPa, formed by agglomeration of many fine particles of a lithium composite oxide represented by the formula Li_pNi_xCo_yMn_zM_qO_2-aF_a (wherein M is a transition metal element other than Ni, Co and Mn, Al or an alkaline earth metal element, 0.9≦p≦1.1, 0.2≦x≦0.8, 0≦x≦0.4, 0≦z≦0.5, y+z>0, 0≦q≦0.05, 1.9≦2−a≦2.1, x+y+z+q=1, and 0≦a≦0.02) to have an average particle size D50 of from 3 to 15 μm, in a weight ratio of the first granular powder/the second granular powder being from 50/50 to 90/10.

For the purpose of preventing a pressure difference from occurring between an interior of an FOUP and an exterior at the time of purging the interior of the FOUP, a communication path that communicates with the exterior of the FOUP and the interior of an outlet path is provided with respect to the outlet path that extends from a table side outlet port which is disposed on a table on which the FOUP is placed, and an external atmosphere is introduced to the outlet path through the communication path when a pressure difference starts occurring between the interior and the exterior of the FOUP.

A type of lithium ion secondary battery is disclosed; therein, the positive electrode 1 is formed by smearing an active material on the surface of an aluminum foil body, where said active material is compound oxide(s) comprising transition metals and lithium capable of absorbing and releasing lithium ions; the negative electrode 2 is formed by smearing an active material on the surface of a copper foil body, where said active material includes carbon material capable of absorbing and releasing lithium ions. Both the positive and negative electrodes have conducting strips acting as current conductors 6, 7. The positive and negative electrodes 1, 2 are in plate form and are alternately stacked on both sides of the belt-shaped separator 3 to form the electrode core 4. The separator 3 wraps around said electrode plates and separates the positive and negative electrodes 1, 2. This type of lithium ion secondary battery can effectively use the internal space of a battery shell, increase the battery's energy density, improve the large current discharge characteristic of the lithium ion secondary battery, the self-discharge ability, the battery's cycling capability and the battery's capacity.

Providing a negative-electrode material for nonaqueous-electrolyte secondary battery, the negative-electrode material including lithium silicate particles coated by a carbonaceous substance, a production process for the same, a negative electrode for nonaqueous-electrolyte secondary battery, and a nonaqueous-electrolyte secondary battery.

A negative-electrode material for nonaqueous-electrolyte secondary battery includes lithium silicate particles having a surface at least some of which is coated by a carbonaceous substance formed by heating a carbon-containing compound at a thermal decomposition temperature of the carbon-containing compound or more and 1,100° C. or less, the carbon-containing compound being a solid at ordinary temperature and exhibiting a zeta-potential absolute value being 60 or more against N-methyl-2-pyrrolidone (or NMP).

A negative electrode material for a lithium ion battery containing a composite material, the composite material including silicon-containing particles, graphitic carbon material particles, and a carbonaceous carbon material, in which the composite material has a ratio (A/B) of an area (A) of a peak near 100 eV derived from metal Si to an area (B) of a peak near 103 eV derived from silicon oxide, as measured by XPS, of not less than 0.10 and not more than 2.30. Also disclosed is a paste including the negative electrode material, as well as a negative electrode for a lithium ion battery including a formed body of the paste and a lithium ion battery including the negative electrode.

A process and apparatus for the synthesis of metal oxide nanopowder from a metal compound vapour is presented. In particular a process and apparatus for the synthesis of TiO₂ nanopowder from TiCl₄ is disclosed. The metal compound vapour is reacted with an oxidizing gas in electrically induced RF frequency plasma thus forming a metal oxide vapour. The metal oxide vapour is rapidly cooled using a highly turbulent gas quench zone which quickly halts the particle growth process, yielding a substantial reduction in the size of metal oxide particles formed compared with known processes. The metal compound vapour can also react with a doping agent to create a doped metal oxide nanopowder. Additionally, a process and apparatus for the inline synthesis of a coated metal oxide is disclosed wherein the metal oxide particles are coated with a surface agent after being cooled in a highly turbulent gas quench zone.

The present invention provides an electrochemical cell using an electrode containing a phosphorus compound containing lithium metal.

The invention discloses an internal structure of soft package lithium ion battery, which comprises a housing and a battery equipped in the housing, and EVA is equipped between tabs, and the tab of the battery is provided with a PCB board with through hole, and the tab crosses the PCB board. The invention can guarantee good contact of tab after the electrical core is connected in series connection, and simultaneously guarantee non-falling after welding, and the slit between electrical core tabs can be filled with insulated EVC with high temperature resistance and good formability, and the EVA is a plastic material which is composed of ethene (E) and vinyl acetate (VA). Ultrasonic welding of tab can play the role for reducing internal resistance between insulators and preventing falling caused by unfirm fixing of tab. After welding, scolding tin for tab can play the role for reinforcing soundness of the tab, and simultaneously facilitating link of wire harness. The tab crosses PCB with through hole, thereby reinforcing fixation of tab and increasing anti-compression property of electrical core tab position.

To provide a process for producing a lithium-cobalt composite oxide for a positive electrode of a lithium secondary battery excellent in volume capacity density, safety, charge and discharge cyclic durability, press density and productivity, by using in expensive cobalt hydroxide and lithium carbonate. A mixture having a cobalt hydroxide powder and a lithium carbonate powder mixed so that the atomic ratio of lithium/cobalt would be from 0.98 to 1.01, is fired in an oxygen-containing atmosphere at from 250 to 700° C., and the fired product is further fired in an oxygen-containing atmosphere at from 850 to 1,050° C., or such a mixture is heated at a temperature-raising rate of at most 4° C./min in a range from 250 to 600° C. and fired in an oxygen-containing atmosphere at from 850 to 1,050° C.

The three-dimensional molding device includes a recoater configured to discharge a granular material from a discharge port onto the molding table such that the granular material is superimposed in layer, an solidification device configured to solidify a partial region of the granular material in a plane solidification device direction of an upper surface of the molding table, a moving mechanism configured to cause the recoater to reciprocate in a plane direction parallel to the upper surface of the molding table, and at least one plug member configured to close a part of an opening in at least one location in a longitudinal direction of the discharge port of the recoater and limit a discharge range of the granular material.

The invention discloses a waste lead-acid storage battery repair activator and a preparation method thereof. The activator is prepared from 15-30 parts by weight of mother liquor, 3-5 parts by weightof carbon nano tubes, 4-7 parts by weight of sodium sulfate, 5-8 parts by weight of cobalt sulfate, 4-9 parts by weight of copper sulfate and 50-70 parts by weight of deionized water, wherein the mother liquor is prepared from 0.2-0.8 wt% of super absorbent resin, 0.5-3 wt% of fumed silica and the balance of deionized water. According to the waste lead-acid storage battery repair activator, decomposition of originally non-conductive lead sulfate is accelerated, it is guaranteed that the temperature of the storage battery is not excessively increased when high-frequency current is activated, the storage battery is effectively protected, and due to the fact that the activating agent is made of super absorbent resin according to the multi-encapsulation theory, electrolyte molecules are wrapped with one another, and the layering phenomenon is not likely to happen.

The invention discloses a mixedly marshaled battery pack and a mixed marshaling method of the battery pack. According to the mixedly marshaled battery pack, batteries of different capacities are connected in series or in series and in parallel in a mixed marshaling manner, or multiple batteries of same capacity are connected in series and in parallel in a mixed marshaling manner, the rated capacities of corresponding batteries (packs) of unit voltage in the whole marshaled battery pack are not completely same, and power supply leads are arranged at two ends of the batteries (packs) with relatively high capacities and are capable of supplying power outsides, so that a group of battery packs with integrated voltage can be provided for supplying power outsides, and one or multiple groups of auxiliary power supplies with voltages lower than the voltage of the battery packs are further provided for supplying power outsides. The mixedly marshaled battery pack has the beneficial effects that a DC-DC converter matched with the battery pack can be omitted, so that the electric energy loss in a voltage conversion process is avoided, meanwhile, the weight, the size and the cost of a system is reduced, and the reliability of the system is improved; the mixedly marshaled battery pack is convenient to maintain and safe to use.

The invention relates to a lead-acid accumulator, in particular relating to a quantum lead-acid accumulator which comprises a cathode plate, an anode plate and an electrolyte, wherein the cathode plate comprises a lead plaster and a grid; the lead plaster contains 4-6% quantized carbon suspension, 0.01-0.06% of acrylic short fiber, 0.1-0.3% of lignin, 0.15-0.45% of acetylene carbon black, 0.4-0.7% of barium sulfate, 5-8% of dilute sulphuric acid and 4-5% of purified water based on the proportion by weight of lead powder; and the grid material of the anode and cathode plates adopts a Pb-Ca-Sn-Al quaternary alloy. In the quantum lead-acid accumulator provided by the invention, the quantized carbon suspension is added in the formula of the cathode plate containing the lead plaster; the particle size of the carbon particles in the suspension is uniformly less than or equal to 3nm; and in the coordinated application of the carbon particles, active substances and additives, the porosity of the active substances is improved, a cathode absorption technique is developed, the utilization rate of the active substances is enhanced, and the deep discharge performance of the accumulator is improved. A test indicates that the quantum lead-acid accumulator provided by the invention has the advantages of high quality-energy ratio, good charge-discharge performance, convenience in maintenance, long service life and suitability for being used in the severe environments such as vibration and impact, low temperature and the like.

A carbon material for lithium ion secondary batteries of the invention contains amorphous carbon and graphite.

The amorphous carbon is deposited on a surface of the graphite, the amorphous carbon content is 55% by weight to 99% by weight, and the graphite content is 1% by weight to 45% by weight.

The invention relates to a control method of an electric vehicle, a medium and equipment. The electric vehicle comprises a three-way valve, the three-way valve is used for guiding water heated by a heater into an air conditioner warm air core loop and a power battery loop, and the method comprises the steps that if an instruction for instructing air conditioner warm air and battery heating to be started at the same time is received, the current water temperature at a water outlet of the heater is obtained; the air conditioner required water temperature at the water outlet of the heater is determined; and the opening degree of the three-way valve is adjusted according to the current water temperature and the water temperature required by the air conditioner, so that the power battery is heated while the air conditioner is started to warm air. Thus, heat distribution between air conditioner warm air and battery heating can be automatically adjusted under the condition that basic requirements of the air conditioner are guaranteed, the activity of the power battery is improved while the comfortable temperature of a cab is achieved, and therefore the discharge capacity of the power battery is increased, the endurance mileage is increased, and the power performance of the whole vehicle is enhanced.