636 results about "Floating charge" patented technology

A method for providing redundancy in a floating charge trap device based programmable logic device includes the steps of sensing for a predetermined amount of stored charge in a first area of a floating trap devices in a floating trap device pair, and sensing for the predetermined amount of stored charge in a second area of the floating trap devices in the floating trap device pair when the charge in the stored charge in the first area in one of the floating trap devices is below the predetermined amount.

A non-volatile programmable memory cell suitable for use in a programmable logic array includes a non-volatile MOS transistor of a first conductivity type in series with a volatile MOS transistor of a second conductivity type. The non-volatile MOS transistor may be a floating gate transistor, such as a flash transistor, or may be another type of non-volatile transistor such as a floating charge-trapping SONOS, MONOS transistor, or a nano-crystal transistor. A volatile MOS transistor, an inverter, or a buffer may be driven by coupling its gate or input to the common connection between the non-volatile MOS transistor and the volatile MOS transistor.

The invention discloses a wireless intelligent battery. The wireless intelligent battery comprises a storage battery pack; the storage battery pack is composed of a plurality of single storage batteries which are in series connection; battery terminals of the single storage batteries are respectively connected with sensors used for detecting battery parameters; the sensors are connected with battery management modules; data collected by the sensors are transmitted to the battery management modules; the battery management modules are connected with wireless communication modules; each single storage battery is provided with a battery end cover; a mounting groove is formed in each battery end cover; the battery management modules and the wireless communication modules which are connected with one another are arranged in the mounting grooves; the wireless communication module of each single storage battery communicates with each other; Internet communication ports are also formed in the single storage batteries. According to the invention, intercomparison on charge-discharge conditions of each single storage battery can be achieved to prevent floating charge of the single storage batteries; data parameter values of each single storage battery can be transmitted to a server through the Internet, so that unified monitoring of technical personnel is convenient.

The present invention discloses an ageing rate estimation method of storage battery. Said method includes the following steps: defining discharge data and discharge capacity characteristic data of storage battery; using nominal life of storage battery as reference, using its discharge curve as ageing curve; when the storage battery is come into floating charge state from equalizing charge state, defining its position in ageing curve and estimating its ageing rate; when the discharge exceeds predefined discharge depth, according to the comparison result of capacity discharged from the present discharge to described selected capacitor point and new storage battery capacity renewing ageing rate; then utilizing said renewed ageing rate to correct the position of storage battery in ageing curve. Said invention also discloses a fault detection method of storage battery and a storage battery management monitoring device.

The invention discloses an intelligent charging system and charging method applied to a power battery. A 4-stage charging method is adopted, namely trickle charge; multi-stage constant current-constant voltage alternative charge; constant voltage charge and floating charge. A charging control system that automatically adjusts charging current and charging voltage, that is a control system of the invention, is used for distinguishing voltage and current thresholds, an equalizing charge condition, a charging terminal condition and the real-time acquired battery pack temperature, battery pack total voltage, single maximum and minimum voltage and the like of each charging stage according to a battery specification transmitted by a battery management system, and can automatically switch charging stages according to different conditions of practical batteries and different conditions of different batteries and so on, so that each charging stage in the charging process can be accurately controlled.

Disclosed is a charging machine including a main charging circuit and a charging control circuit, the main charging circuit comprises a filter circuit, a rectifier filter circuit, a pulse bleeder circuit, a half-bridge inversion circuit, a drive control circuit and a high frequency rectifier charging circuit, the charging control circuit comprises a power supply circuit, a voltage stabilizing circuit, a self-recycle circuit, a current detecting circuit, a voltage detecting circuit and a temperature detecting circuit, and the charging control circuit also comprises a control display circuit and a pulse modulation switching power supply integrating control circuit. The charging machine can effectively release the sulfation phenomenon of a battery plate by controlling a single chip microcomputer in the control display circuit to adopt multi-stage pulse type charging method, fives stages including constant current, constant voltage, floating charge I, average charge and floating charge II. Each stage in process outputs different duty cycle pulsing signal through the control of single chip microcomputer and then a half-bridge power tube is controlled to reach intermittent pulse current charge and depolarization effect.

An emergency lighting equipment with an automatic charge/discharge and monitoring system is provided. The emergency lighting equipment comprises an operating mode control circuit, a rectify/voltage-divide and voltage regulation circuit, a main control unit, an illuminating apparatus and a battery. A battery discharge operating is initiated when the main control unit detects the passage of a preset period without any battery discharge operation. The main control unit also terminates a battery discharging operation when the discharge operation is completed and terminates a battery charging operation after the battery has been float-charged for a preset period of time. The emergency lighting equipment may include a battery state inspection circuit for issuing a warning signal when the battery is found to be defective.

The invention provides formation technology for a flexible packing lithium ion secondary battery, which is characterized in that the assembled battery is charged by using multi-step constant current and constant voltage and discharged by using the constant current; and the flexible packing lithium ion battery is circularly charged and discharged by using the constant current, wherein the upper limit voltage of the charging of the multi-step constant current, the upper limit voltage of the charging of the constant voltage and the upper limit voltage of the charge-discharge cycle of the constant current are between 4.25 and 4.5V. The formation technology is suitable for the flexible packing lithium ion battery of which the lithium manganate and the lithium ferrous phosphate are anode materials and the implementation is simple; in addition, the formation technology can obviously improve the cycle performance and the floating charge performance of the battery, and has high popularization value.

The invention relates to a method and a special device for the comprehensive control of a storage battery pack, which is characterized in that: storage batteries are discharged or charged by measuring the surface temperature of each storage battery of the storage battery pack and the terminal voltage of each storage battery of the storage battery pack; and a storage battery open circuit alarming signal or a storage battery pack overvoltage alarming signal is output by measuring the floating charge current of the storage battery pack. The special device consists of a main machine (1) and a plurality of monitoring and controlling units (11) with the same structure, wherein the main machine (1) comprises a main control circuit (10), a floating charge current measuring circuit (2), a bus voltage measuring circuit (3), a charge module circuit (4), a discharge module circuit (5), a liquid display (7) and a keyboard input circuit (8). The monitoring and controlling units (11) are parallelly connected; and the output ends of the charge module circuit (4) and the discharge module circuit (5) are connected with the charge control input end and the discharge control input end of charge and discharge control circuits (13) in the monitoring and controlling units (11) respectively. The method and the device are widely used for detecting the storage batteries for power plants, transformer substations, telecommunication and the like.

The invention discloses a circuit and a system for intelligent management of a battery pack. The circuit for intelligent management of the battery pack comprises more than two battery units, wherein battery units are connected in series, one pole of each of the battery units is electrically connected with one output port of a voltage-reduction and voltage-stabilizing circuit and one pole of a redundant battery unit through a third switch and a first switch sequentially, the third switch and the first switch are in series connection, and the other pole of each of the battery units is electrically connected with the other output port of the voltage-reduction and voltage-stabilizing circuit and the other pole of the redundant battery unit through a second switch. The system for intelligent management of the battery pack comprises the circuit for intelligent management of the battery pack. What's more, the first switch, the second switch and the third switch are controllable switches and are controlled by one control unit. By the aid of the circuit and the system, the effective management of the battery pack can be achieved, and particularly, the smooth switching balance and the efficient floating charging balance can be achieved.

The invention discloses an intelligent maintenance system and a method for a communication base station standby power supply. the system comprises one or more monitoring terminals in mutual two-way data communication, a server and a client located in a remote operation and maintenance center, wherein each monitoring terminal comprises a detection module, a charging/discharging control switching module, a temperature/humidity measurement module, a computer room power measurement module, an ARM processor and a power supply module; a battery pack is switched between a float charging circuit and a discharging loop via a DC contactor; the DC contactor is switched via the switching module; output ends of the detection module, the temperature/humidity measurement module and the computer room power measurement module are all connected with the ARM processor; and the input end of the charging/discharging control switching module is connected with the ARM processor and the output end is connected with the DC contactor. According to the system and the method of the invention, scientific maintenance and intelligent management on the base station standby power supply can be realized, the service life of the battery is prolonged, reliability of the standby power supply is improved, and the operation and maintenance cost is saved.

An improved battery charging method is usable by a battery charger to charge a battery. The charging method may include an optional desulfation process, a first constant current process, a constant voltage process, a second constant current process and a float charge process. The charging method preferably improves various charge and usage characteristics of the battery through a single or continued use of the battery charger utilizing the charging method.

The invention discloses a relaxation oscillator for increasing frequency-control current linearity. The relaxation oscillator comprises a charge and discharge circuit, a control circuit and a floating charge and discharge capacitor arranged between the charge and discharge circuit and the control circuit. The control circuit detects voltage of the floating charge and discharge capacitor and outputs a control signal. The output signal of the oscillator is determined by only the charge process of the floating charge and discharge capacitor, so that complete-period delay of the oscillator is decreased and frequency-control current linearity of the oscillator is increased. The floating charge and discharge capacitor is formed by parallelly connecting two equal capacitors C1 and C2, and two pole plates of the capacitors C1 and C2 are cross-connected with each other; two ends of the floating charge and discharge capacitor are symmetrical, so that the influence of micro stray capacitance at two ends of the floating charge and discharge capacitor upon the output of the oscillator is decreased.

The invention relates to an electrode plate solidification technology for lead-acid battery. The solidification technology comprises a moisture retention phase, a thermal insulation solidification phase, and a drying phase. In the moisture retention phase, a low-temperature solidification treatment is carried out at first, the temperature in the low-temperature solidification treatment is 40 to 45 DEG C, then a high-temperature solidification treatment is carried out, and the temperature in the high temperature solidification treatment is 75 to 85 DEG C. In the thermal insulation solidification phase, the relative humidity is gradually reduced during the solidification process. Electrode plates that are produced through the solidification technology are assembled into batteries. The floating charging resistant performance of the battery is prominently improved, and thus the service life of the battery is prolonged. The primary capacity of the battery is large, and the service life is 5 years or more. The electrode plate solidification technology is an ideal solidification mode for lead-acid battery for communication.

The invention provides a method and a system for detecting the SOH (State Of Health) of a lead-acid storage battery. The method for detecting the SOH of the lead-acid storage battery comprises the steps of obtaining current I of the lead-acid storage battery in a charge capacity test and a slope K1 of a voltage change straight line of an i-th single lead-acid storage battery, and determining a charge capacity SOH1 of the lead-acid storage battery according to the current I and the slope Ki, wherein i=1, 2, 3... n, and n refers to the number of single lead-acid storage batteries; obtaining a preset internal resistance Re, an actually-measured internal resistance Rm and a theory SOH value of the lead-acid storage battery in a ti period, and determining an internal resistance SOH2 of the lead-acid storage battery in a floating charge process according to the preset internal resistance Re, the actually-measured internal resistance Rm and the theory SOH value in the ti period; determining the SOH of the lead-acid storage battery according to the charge capacity SOH1 and the internal resistance SOH2. According to the method and the system for detecting the SOH of the lead-acid storage battery, provided by the invention, by analyzing all correlative physical parameters of the lead-acid storage battery in the ti period and determining the SOH of each correlative physical parameter, corresponding SOH can be accurately detected when the method for detecting the SOH of the lead-acid storage battery is applied to each stage of the lead-acid storage battery.

The invention relates to an electric vehicle battery, in particular to a charging method for an electric vehicle lead-acid storage battery. Different charging voltages and currents are controlled by the following steps of: T1, constant low current charging; T2, constant current charging; T3, current reduction and constant current charging; T4, constant voltage charging; T5, pulse current charging; and T6, float charging. By the matching setting of the six stages, a battery repair function is enhanced, and charging efficiency is improved. The charging method is easy to set, low in cost, high in charging efficiency and highly practical; and the service life of the battery can be prolonged.

Provided is a method of controlling a bidirectional converter to charge and discharge a storage battery. The bidirectional converter adopts a double-loop control method, the inner loop is alternating current loop control, and the outer loop is direct current loop control. The direct current loop control can select direct current voltage outer loop control or direct current outer loop control according to different charging and discharging states of the storage battery; when the storage battery is in a constant current voltage-limiting charging state and a constant current discharging state, the direct current outer loop control and alternating current loop control of the bidirectional converter work simultaneously; when the storage battery is in a constant voltage current-limiting charging state and a floating charging constant-voltage charging state, the direct current voltage outer loop control and alternating current inner loop control of the bidirectional converter work simultaneously; the direct current voltage outer loop control and the direct current outer loop control are switched over smoothly; meanwhile, the bidirectional converter adopts a four-section type intelligent charging control and constant-current discharging control strategy for the storage battery.

The invention discloses a power UPS system based on a super-capacitor. The power UPS system comprises a rectifier, an inverter, a bidirectional direct current (DC)/DC converter and an energy storage system. The energy storage system is composed of a super-capacitor group, a super-capacitor equalization circuit and a super-capacitor management system (CMS). The rectifier is used for converting input distribution alternating voltages into high-voltage direct voltages and provides a power supply for the inverter; the inverter is used for converting the high-voltage direct voltages at the front end into alternating voltages meeting load use requirements; and the rectifier performs charge or floating charge on the energy storage system through the bidirectional DC/DC converter. The power UPS system based on the super-capacitor uses the super-capacitor as an energy storage unit, and compensates for electrical energy gaps caused by power equipment during the power shaking of power grids through an online parallel hot spare mode. The power UPS system based on the super-capacitor can work normally at a low temperature (an ultimate temperature minus 40 DEG C), has the advantages of being small in size, free of maintain, long in service life, high in power and reliability and the like and can meet instantaneous power supply requirements of large power.

A semiconductor device includes a source region, a drain region, a gate region, and a drift region. The drift region further includes an active drift region and inactive floating charge control (FCC) regions. The active drift region conducts current between the source region and the drain region when voltage is applied to the gate region. The inactive FCC regions, which field-shape the active drift region to improve breakdown voltage, are vertically stacked in the drift region and are separated by the active drift region. Vertically stacking the inactive FCC regions reduce on-resistance while maintaining higher breakdown voltages.

The invention provides an on-line storage battery managing system and a running method thereof. The running state of a storage battery can be switched, measurement on the open-circuit voltage of a single storage battery is achieved, and measurement on the internal resistance of the singe storage battery under the specific conditions is achieved; the problems that in an existing running mode, only the floating charge voltage of the storage battery can be measured, and the health condition of the storage battery cannot be accurately reflected are solved, the problems that an existing storage battery internal resistance measuring method cannot be operated in a large-current state and truly reflect the working condition of the storage battery are solved, and the problem that hidden dangers such as internal bad contact cannot be found out is solved.

The invention relates to the field of intelligent control of battery packs. An embodiment of the invention discloses a regulating device and a control method for balance of a demand side battery pack. According to the regulating device and the control method for balance of the demand side battery pack, a demand side battery pack balance control system structure and control module functions, a battery pack n-order resistance-capacitance equivalent circuit model and a parameter battery pack balance control method and an interactive process of a demand response (DR) communication interface and a communication power supply control cabinet control module are contained. A communication battery control system is composed of a multi-channel selecting switch, a battery pack monitoring module and a control module. A battery pack participation demand response incidents are finished in a coordinated mode through the communication battery control system, a communication device end, a communication power system and a power grid demand response server. Battery single body difference detection and control in the battery pack are controlled through the multi-channel selecting switch, and the communication battery pack which is in a floating charge state for a long term is controlled to charge and discharge electricity so as to participate in power demand response. The control method is characterized in that the communication battery control system balances charge and discharge of the battery pack according to demand response signals on the premise of considering service life of the battery pack so as to participate in the demand response incidents and assist a power grid in achieving demand side management.