1136 results about "Charge rate" patented technology

A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition. The apparatus includes a voltage converter for converting electrical energy from an initial voltage to a final voltage at a plurality of charging rates, and a defibrillator electrically coupled between the converter and the patient and having an energy reservoir for receiving the electrical energy. The defibrillator produces preshaped electrical pulses such as defibrillation pulses and cardioversion pulses. The apparatus additionally includes an energy delivery controller electrically coupled to the patient and the converter and the defibrillator. The controller causes the converter to provide the electrical energy to the defibrillator at a specific charging rate in response to an energy level in the reservoir. The apparatus may include a plurality of electrodes interposed between the defibrillator and the patient and each electrode preferably has an impedance reducing means contained therein. One embodiment of the apparatus may include a H-bridge to produce a positive-going pulse segment and the negative-going pulse segment within the biphasic exponential signals.

Rate charging rules and principles concerning mobile calls in a cellular communication system can be improved by providing the mobile station with a locator object which, at certain intervals, determines the cell in which the mobile station is currently located. Stored in the mobile station is a list of cells or areas in which a special rate is to be applied in charging for calls originating from the mobile station. The locator object monitors calls made from the mobile station and, when it detects that a call is being made, it determines whether the mobile station was in a denoted special rate area at the time that its location was most recently determined. If so, then the object informs the network that the call is entitled to the special rate. Since the last location function was executed just before call setup commenced, a special rate call is possible even if the mobile station has thereafter moved some distance into a cell applying a normal rate. Disposed in a billing center is a billing object, to which the locator object sends data indicating whether the call was initiated from a cell or area in which a special rate is applicable, as well as data identifying the particular call. The second object receives the billing records generated by the mobile switching center, which also contain call identifying data, and compares the call-specific data in those records with the data sent by the first object. In this way, the second object can identify from the billing records those calls that are entitled to a special rate, regardless of whether the mobile station has moved during call setup from the original cell into a cell where another rate, e.g. a higher rate, is applicable.

A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium. The current capacity per unit area of the positive and negative electrodes each are at least 3 mA-h/cm², the total area specific impedance for the cell is less than about 20 Ω-cm², and the positive electrode has an area specific impedance r₁ and the negative electrode has an area specific impedance r₂, and wherein the ratio of r₁ to r₂ is at least about 10.

A number of charging regions and associated special charging rates are defined for a cellular telephone subscribers. The available charging regions are selectively assembled by subscribers to define charging areas within which that subscriber is entitled to special rates for cellular calls. When a subscriber is engaged in a cellular call and is located with the subscriber's charging area, the subscriber is charged the special charging rate granted to the charging region within which the subscriber is located. Otherwise, the subscriber is charged at conventional cellular charging rates. In instances where the subscriber is not given the special rate, or otherwise is to be charged at more than the lowest available rate, the system notifies the participating subscriber that the call is not subject to the special rate and gives the subscriber an opportunity to terminate without being charged.

A first circuit having a first coil electrically charges a second circuit having a second coil through electromagnetic coupling of the two coils. When data signals are to be transferred between the first and second circuits, signal transfer is started only after the second circuit has been charged for a predetermined period of time. The position relationship between the coils is also detected, and a charging/transfer selector changes a duty ratio between charge transfer and data transfer in accordance with the detected result. The charge is transferred in an intermittent manner, and the charging rate is adjusted according to the difference between the voltage of a secondary battery observed during a charging phase and the voltage of the secondary battery observed a certain time after interruption of the charging phase, or vice versa.

The invention provides a gate drive circuit and method and a display device and relates to the technical field of display. The method includes the steps that gate row drive scanning is performed on shifting register units located in a first area in the gate drive circuit; after gate row drive scanning of the shifting register units in the first area is finished, touch scanning is performed; after touch scanning is finished, the last-level shifting register unit located in the first area is scanned again so that the last-level shifting register unit located in the first area can be used for pre-charging a first-level shifting register unit located in a second area; gate row drive scanning is performed on shifting register units located in the second area in the gate drive circuit, and the last-level shifting register unit located in the first area is in cascade connection with the first-level shifting register located in the second area. The method can overcome the defect that the row pixel charging rate is insufficient and solve the problem of dark lines or poor bright lines.

A mobile communication system for providing a home zone service and a method thereof. In the mobile communication system, a home zone signal generator generates a home zone signal, a mobile radio terminal receives the home zone signal and determines whether the mobile radio terminal is currently within or outside a home zone based on the strength of the home zone signal, and a base station communicates with the mobile radio terminal. A visitor location register temporarily stores a first and a second telephone numbers of a subscriber, wherein each telephone number represents different charge rates. A mobile exchange receives a call information, a mobile identification number, and the home zone in/out information from the base station and selects one of the first and second telephone numbers of a subscriber corresponding to the mobile identification number and the home zone in/out information. A billing center receives the call information and one of the selected first and the second telephone numbers from the mobile exchange and generates a service charge for the call connection.

A method is provided of providing a service to a user terminal. According to this method, a first network agrees with the user terminal to provide the service at a certain charge rate, then starts to provide the service. Subsequently at least one other network is invited by the first network to provide the service. The first network receives at least one offer from the other networks to provide the service to the user terminal. The first network then accepts one of the offers, such that the one of said other networks thereafter provides the service and charges the user terminal without the first network being involved.

A system and method is described for rapid charging and power management of a battery for a meter. A charger component is operably associated with the meter and is capable of executing a rapid charge algorithm for a rechargeable battery. The algorithm includes monitoring for a connection to an external power source and implementing a charging routine of a battery at a first charge rate and then at a second charge rate. The second charge rate is lower than the first charge rate. A temperature rise in the rechargeable battery due to the first charge rate has a negligible heat transfer effect on the fluid sample. The meter can also include a power switch for controlling current flow to a battery fuel gauge. The power switch is open when the meter enters into a sleep mode. The state of battery charge is determined after the meter exits the sleep mode.

A system for managing energy stored in a plurality of series connected energy storage units has a plurality of energy storage unit controllers, each controller being associated with one of the plurality of energy storage units, a balancing circuit between two of the energy storage units, the balancing circuit being controlled by at least one of the energy storage unit controllers, a serial electrical interface between the energy storage unit controllers for providing voltage isolated bi-directional communication, and a central controller in electrical communication with the energy storage unit controllers. A method for managing charge in a plurality of series connected energy storage units forming an energy storage device includes monitoring a current supplied to the energy storage device, determining at least one of a charging rate and a capacity of a first energy storage unit and a second energy storage unit in the energy storage device, and diverting current from the first energy storage unit to the second energy storage unit in response to the steps of monitoring and determining.

A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium. The current capacity per unit area of the positive and negative electrodes each are at least 3 mA-h/cm², the total area specific impedance for the cell is less than about 20 Ω-cm², and the positive electrode has an area specific impedance r₁ and the negative electrode has an area specific impedance r₂, and wherein the ratio of r₁ to r₂ is at least about 10.

A display apparatus includes a plurality of pixels arranged in a matrix array; a plurality of gate lines applying a same gate signal to at least two rows of the pixels; a plurality of data lines crossing the gate lines; a TFT disposed at an intersection of each gate line and each data line; and a light source part sequentially providing at least two colors of light to each pixel every frame, thus enhancing a charging rate of each.

Power transfer rate at a charging facility can be maximized by employing a feedback scheme. The state of charge (SOC) and temperature of the regenerative energy storage system (RESS) pack of a vehicle is monitored to determine the load due to the RESS pack. An optimal frequency that cancels the imaginary component of the input impedance for the output signal from a grid converter is calculated from the load of the RESS pack, and a frequency offset f* is made to the nominal frequency f₀ of the grid converter output based on the resonance frequency of a magnetically coupled circuit. The optimal frequency can maximize the efficiency of the power transfer. Further, an optimal grid converter duty ratio d* can be derived from the charge rate of the RESS pack. The grid converter duty ratio d* regulates wireless power transfer (WPT) power level.

A convenient source of charging power for portable communication devices is an integral power node of a computer data bus, such as a USB (universal serial bus) port. Unfortunately, USB ports have limited power capacity, making them generally incompatible with battery charge controllers (BCCs) which are designed to receive a steady, high capacity input. The invention provides a battery charging circuit which adjusts to the parameters of an external power supply such as a USB port by adding a regulating circuit to a standard BCC design. This regulating circuit maximizes the current drawn by the BCC, while keeping the voltage to the BCC above a preset minimum (the low voltage shut off level for the BCC). If the voltage to the BCC begins to drop, the regulating circuit reduces the current drawn, so the voltage rises and stays within the operating range of the BCC.

A motorbike is mounted with a fuel cell system which includes a cell stack, a secondary battery which is charged by the cell stack and a controller which has a CPU. After receiving an operation stop command which is issued from a main switch, the CPU estimates a charging time for a charge rate of the secondary battery to attain a target value, based on a voltage of the secondary battery and a charge current which are detected based on detection signals from a voltage detection circuit and an electric current detection circuit, as well as based on a charging time estimation table stored in a memory. The charging time estimated by the CPU is displayed in a display.

A charging system for a battery pack, including a charging station transferring energy to the battery pack at a maximum fast charge rate in a first operational mode and transferring energy to the battery pack at a slower charge rate in a second operational mode; a data collection system acquiring data indicating a state of charge of the battery pack and one or more desired charge optimization parameters; and a station control, responsive to the data and to the desired charge optimization parameters, automatically establishing a charging profile for the battery pack to assert a control signal and operate the charging station in the second operational mode whenever the charging station is able to transfer sufficient energy to the battery pack at the slower charge rate to meet an SOC target and a charge completion time target.

A communication system in which a calling party mobile station is capable of automatically obtaining information on a plurality of currently available communication modes of a called party mobile station and charge rate information to enable a user of the calling party mobile station to determine which mode is to be used for communication with the called party mobile station based on the information thus obtained. The called party mobile station notifies information on currently available communication modes to a circuit switching station. The circuit switching station stores position information and communication mode information of the called party mobile station, and obtains information on the service provider and so on of the called party mobile station from another switching station. The calling party mobile station places a call for the called party mobile station, to the circuit switching station. The circuit switching station obtains registered information of the called party mobile station from the circuit switching station, calculates a unit price, and notifies the unit price to the calling party mobile station. The calling party mobile station displays the unit price to enable the user to select a communication mode and originate a call.

A method for charging at least one battery, includes: determining a status of at least one parameter for the battery, where the at least one parameter comprises a closeness to a desired charge level; determining that the battery is to be charged during a peak usage time period; and determining a priority rating for the battery based upon the at least one parameter, where a battery closer to the desired charge level has a higher priority rating. The battery is then charged according to it priority rating. When batteries are to be charged for an off-peak usage time period, the charge rates of the batteries are adjusted based upon the available time for the charge. In this manner, quick recharged battery availability is provided during peak usage time periods, while battery life is prolonged during off-peak usage time periods.

A system for optimizing battery pack charging is provided. In this system, during charging the coupling of auxiliary systems (e.g., battery cooling systems) to the external power source are delayed so that the battery pack charge rate may be optimized, limited only by the available power. Once surplus power is available, for example as the requirements of the charging system decrease, the auxiliary system or systems may be coupled to the external power source without degrading the performance of the charging system.

The invention discloses a method for correcting a SOC (State Of Charge) by utilizing a battery charging curve. The SOC is corrected step by step by utilizing the characteristics of a low-end linear interval and a high-end curve point according to the charging curve graphs of a lithium iron phosphate battery at different charging rates. According to the method, the SOC of the lithium iron phosphate battery is corrected by utilizing the low-end linear interval and the high-end full charge point of the charging curve of the battery based on an open-circuit method and an ampere-hour integral method, so that the SOC correcting probability is increased and the SOC estimation precision is improved. The method is easy to implement, popularize and use. As the SOC low-end linear interval correction operation in the charging process is added, the SOC estimation precision in the charging interruption condition can be particularly improved.