868results about How to "Increase battery capacity" patented technology

A method for charging a battery, such as a lithium based battery, which applies different charge pulses and discharge pulses to the battery, takes voltage measurements during those charge pulses, discharge pulses, and rest periods between the charge pulses and discharge pulses, and determines whether to terminate or to continue charging the battery. The full sequence of charge pulses, discharge pulses, and rest periods, includes a plurality of charge pulses (1), separated by rest periods (2) and followed by a rest period (3). This is then followed by a plurality of discharge pulses (4), separated by rest periods (5) and followed by a rest period (6). This is then followed by a plurality of extended charge pulses (7), separated by rest periods (8) and followed by a rest period (9). Then another discharge pulse (10) is applied, followed by a rest period (11). This is followed by a plurality of alternating charge pulses (13) and discharge pulses (12), separated by rest periods (13, 15) and followed by a rest period (16). Then another plurality of discharge pulses (17) is applied, separated by rest periods (18) and followed by a rest period (19). Open circuit voltage measurements taken during the rest periods, loaded circuit voltage measurements taken during the discharge pulses, and charge pulse voltage measurements taken during the charge pulses, are used to determine whether to continue or to terminate the charging of the battery.

An antenna apparatus that can increase capacity in a wireless communication system is disclosed. The antenna operates in conjunction with a station and comprises a plurality of antenna elements, each coupled to a respective weight control component to provide a weight to the signal transmitted from (or received by) each element. The weight for each antenna element is adjusted to achieve optimum reception during, for example, an idle mode when a pilot signal is received. The antenna array creates a beam former for signals to be transmitted from the mobile station, and a directional receiving array to more optimally detect and receive signals transmitted from the base station. By directionally receiving and transmitting signals, multipath fading and intercell interference are greatly reduced. The weights are adjusted in a coarse and a fine mode. In the coarse mode all the weight control components are jointly adjusted or changed so that the antenna beam scans through a predetermined sector of a circle until a signal quality metric of the received signal is optimized. The coarse adjustment mode is followed by a fine adjustment mode during which the weights of are independently adjusted to further optimize the signal quality metric.

A battery capacity measuring device in accordance with the present invention has a fully-charged state detector (80e), a detected current integrator (80a), a divider (80b), and a corrector (80c) incorporated in a microcomputer (80). The fully-charged state detector detects that a battery is fully charged. The detected current integrator integrates current values that are detected by a current sensor during a period from the instant the battery is fully charged to the instant it is fully charged next. The divider divides the integrated value of detected current values by the length of the period. The corrector corrects a detected current using the quotient provided by the divider as an offset. Furthermore, a remaining battery capacity calculating system comprises a voltage detecting unit (50), a current detecting unit (40), an index calculating unit, a control unit, and a calculating unit. The voltage detecting unit detects the voltage at the terminals of a battery. The current detecting unit detects a current flowing through the battery. The index calculating unit calculates the index of polarization in the battery according to the detected current. The control unit controls the output voltage of an alternator so that the index of polarization will remain within a predetermined range which permits limitation of the effect of polarization on the charged state of the battery. When the index of polarization remains within the predetermined range, the calculating unit calculates the remaining capacity of the battery according to the terminal voltage of the battery, that is, the open-circuit voltage of the battery.

In the all-solid secondary battery of the present invention, a positive electrode layer and a negative electrode layer are disposed on both sides of a solid electrolyte layer, a first inorganic solid electrolyte and a second inorganic solid electrolyte are included into at least one of the positive electrode layer, the negative electrode layer, and the solid electrolyte layer, the content of transition metal in the first inorganic solid electrolyte is less than 15% by mass on oxide basis, and the content of transition metal in the second inorganic solid electrolyte is 15% by mass or more on oxide basis.

A closure assembly and rupturable vent seal adapted for use in an electrochemical battery cell is disclosed. The vent seal includes a series of peripheral projections that can be folded to insure proper sealing of the vent without wrinkles or overlapping folded portions. Methods of accomplishing the invention are also contemplated.

An electrochemical cell, particularly an electrochemical cell having a container with a positive polarity. In one embodiment, the cell is a primary cell that includes an electrode assembly having a lithium negative electrode and a positive electrode, preferably comprising iron disulfide. The cell is provided with a spiral wound electrode assembly with a portion of the positive electrode contacting the container. The positive electrode current collector contacts the container in one embodiment. The negative electrode includes an electrically conductive member that electrically contacts a cover of the cell and provides the cover with a negative polarity. In a preferred embodiment, the electrically conductive member makes pressure contact with a portion of the cell cover. A method of manufacturing such a cell is also provided.

A method of performing random access procedure includes receiving information on a dedicated random access preamble, transmitting the dedicated random access preamble, and receiving a random access response comprising a random access preamble identifier corresponding to the dedicated random access preamble and a downlink radio resource assignment.

A blade server 2 is provided with a processor 6 for executing program instructions and an electrical connector 12 for connecting to a blade enclosure 22. The blade server 2 also includes a power controller 18 connected to a plurality of power supply batteries 14, 16 which are provided on the blade server 2 itself. If the power controller 18 detects that the main power supply supplied via the electrical connector 12 has been interrupted, then a backup power supply to the processor is provided from the on-board power supply batteries 14, 16. The batteries 14, 16 on each blade are periodically discharged and recharged in turn to check their proper function.

An anode and a secondary battery capable of improving the charge and discharge efficiency are provided. The anode includes an anode current collector, and an anode active material layer provided on the anode current collector. The anode active material layer has a plurality of anode active material particles containing at least one of a simple substance of silicon, a compound of silicon, a simple substance of tin and a compound of tin, and has a coat containing an oxo acid salt in at least part of the surface of the anode active material particles.

An all solid type lithium ion secondary battery which has high heat resistance and can be used over a broad temperature range, has a high battery capacity and an excellent charging discharging characteristic, and can be used stably for a long period of time includes an inorganic substance including a lithium ion conductive crystalline and is substantially free of an organic substance and an electrolytic solution. The inorganic substance comprising a lithium ion conductive crystalline preferably is lithium ion conductive glass-ceramics.

The invention belongs to the technical field of lithium-ion battery, and in particular relates to a method for supplementing lithium powder to a lithium-ion battery negative plate. The method comprises the following steps: a first step, putting the cold-pressed negative plate on an unwinding and rewinding mechanism, and putting lithium powder to a feeding mechanism above the negative plate; a second step, adding electric fields and opening the feeding mechanism, so that the lithium powder is adsorbed on the surface of the negative plate under the action of the electric fields; and a third step, rolling the negative plate adsorbed with the lithium powder. Compared with the prior art, the method can control the movement of the lithium powder to overcome the flotation of metal lithium powder in air through electrostatic effect provided by the electric fields, and can simultaneously control the addition of the lithium powder and the dispersion degree of the lithium powder on the negative plate, thereby uniformly, quantitatively and precisely dispersing the lithium powder on the surface of the negative plate. Besides, the whole process provided in the invention is only needed to be carried out in a drying environment without adding the lithium powder in a process of preparing slurry, has a simple manufacture process and low cost, and is suitable for large-scale production.

A battery which realizes high power output, cost reduction and increase in capacity. An enlarged port section is formed in an open end of a battery case. A ring-shaped support rack section is formed inside of the enlarged port section, and a ring-shaped insulating gasket is set on and supported by the support rack section. The battery has a collector of one pole, to which an end portion of an electrode plate of one pole protruding from an electrode plate group is connected. A ring and flange-shaped collar section, which is tiered with a step, is provided in the periphery of the collector, and the flange-shaped collar section is set on the bottom face of the insulating gasket. A port sealing member, in which a filter section and a cap-shaped terminal section are integrated with each other, is connected onto the collector. The enlarged port section is inwardly caulked, to fix the flange-shaped collar section of the collector and the periphery of the port sealing member, which are overlaid with each other, with the insulating gasket interposed therebetween.

A lid 3 that closes the upper surface of the opening of a closed-bottom prismatic tubular battery can 1, an electrode body 2 accommodated in the battery can 1, a negative terminal 12 penetratively fastened to the lid 3, an insulating plate 11 placed on the lower surface side of the lid 3, a lead plate 17 placed on the lower surface side of the insulating plate 11, and a negative electrode current collector lead 7 led upwardly of the electrode body 2 are included. The upper end portion of the current collector lead 7 is welded to the lower surface of the lead plate 17 and bent in a position located rather closer to the front wall of the battery can 1. The insulating plate 11 has a lid side insulating portion 22 held between the lid 3 and the lead plate 17 and a front sidewall 25 that extends downwardly from the-front end side of the lid side insulating portion 22. In a free state before the battery is assembled, the lid side insulating portion 22 and the sidewall 25 of the insulating plate 11 extend roughly straightly.

An electric motor-generator and an engine are linked using a first belt that is looped around a crank pulley that is mounted to a crank shaft and a one-way clutch pulley that is mounted to a rotating shaft. An electronic control unit drives the electric motor-generator as an electric motor and drives the compressor by the electric motor-generator if engine speed is less than or equal to a predetermined value.

An electrode plate winding device and rolling method for cylinder type battery that is to increase a battery capacity by rolling the electrode plate in a cylinder-like shape. The electrode plate winding device has a mandrel which winds electrode plates coated with the active material layers having different polarity and separators, interposed between the plates. The mandrel is of a generally round cross-section but divided into two parts by a groove. The mandrel having at least one electrode tap region formed in one of the divided parts.

A base station (101) of a cellular communication system (100) comprises a receiver (105) and a channel quality processor (111) which receive channel quality indications from a communication unit (103). The base station (101) further comprises a transmitter (107) for transmitting signals to the communication unit (103). A first power control processor (115) controls the transmit power in response to a first power control mode of operation and a second power control processor (117) controls the transmit power in response to the second power control mode of operation. A rate processor (113) determines a rate of change indication for the channel quality indications and a selector (119) selects between the first power control mode and the second power control mode in response to the rate of change indication. The power control mode of operation may be modified to suit the current channel variations of the communication channel. The invention may be applicable to an HSDPA service in a UMTS cellular communication system.

A method of detecting a state-of-charge of a battery detects a current of a battery and a voltage of the battery, calculating a state-of-charge of the battery as a first state-of-charge based on an integration of the current of the battery thus detected, while calculating the state-of-charge of the battery as a second state-of-charge based on the voltage of the battery and calculating a synthetic state-of-charge obtained by taking a weighted mean of the first state-of-charge and the second state-of-charge as the state-of-charge of the battery, and weighting the weighted mean in order to increase weighting of the second state-of-charge in a region in which a capacity of the battery is increased and a region in which the capacity of the battery is reduced and to increase weighting of the first state-of-charge in other regions.

Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.

Disclosed herein is a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from a group consisting of Ni, Mn and Co. The lithium transition metal oxide contains fluorine, and most of the fluorine is present on a surface of the lithium transition metal oxide, and at least one metal selected from a group consisting of Mg, Ti, Zr, Al and Fe as well as sulfur (S) are further contained in the lithium transition metal oxide.

The invention discloses anode lead plaster of power lead-acid storage battery polar plate, and the anode lead plaster comprises the following components in proportion by weight: 1000 lead powder, 1.5 to 4 antimonous oxide, 0.8 to 1.8 stannous mono-sulphate, 1 to 2.5 aquadag, 0.68 to 0.8 conductive fiber, 25 to 40 lead tetraoxide, 80 to 96 dilute sulfuric acid and 1 to 4 silicon dioxide. The gas-phase silicon dioxide capable of increasing the viscosity strength of active substances and the conductive fiber capable of enhancing the conductive capacity of the polar plate are added, an optimum effect can be reached by adjusting the proportion of the two additives and other additives, so that under the situation of identical mass of the active substances and identical structure of a grid, the circulation service life of a power lead-acid storage battery can be improved by 28 percent, and the battery capacity of the power lead-acid storage battery can be improved by 10 to 15 percent.

A lithium-manganese composite oxide for a lithium ion battery having a good cycle property at high-temperature and battery property of high capacity is provided.

A spinel type lithium-manganese composite oxide for a lithium ion battery represented by a general formula: Li_1+xMn_2−yM_yO₄ (wherein M is one or more elements selected from Al, Mg, Si, Ca, Ti, Cu, Ba, W and Pb, and, −0.1≦x≦0.2, and 0.06≦y≦0.3), and when D10, D50 and D90 are defined as a particle size at which point the cumulative frequency of volume reaches 10%, 50% and 90% respectively, d10 is not less than 2 μm and not more than 5 μm, d50 is not less than 6 μm and not more than 9 μm, and d90 is not less than 12 μm and not more than 15 μm, and BET specific surface area thereof is greater than 1.0 m²/g and not more than 2.0 m²/g, and the tap density thereof is not less than 0.5 g/cm³ and less than 1.0 g/cm³.