88results about How to "Fast equalization" patented technology

Providing a charge condition adjusting apparatus, which can shorten a time for equalization of each charge in unit cells, a low-voltage CPU selects each smallest unit cell in the each cell block, which has each smallest voltage between the both electrodes, from among plural unit cells structuring the cell blocks. The low-voltage CPU controls ON / OFF of a block-discharging switch to connect the both electrodes of each cell block and each block-discharging resistor for discharging the each cell block until the each voltage between the both electrodes of the selected smallest unit cell reaches the target voltage. Successively, the low-voltage CPU controls ON / OFF of a selecting switches and a cell-discharging switch to connect the both electrodes of each unit cell and each cell-discharging resistor to discharge the each unit cell until the each voltage between the both electrodes of the unit cells reaches the target voltage.

A control system for a controlled atmosphere room (“CA room”) for storing perishable commodities, such as fruits and vegetables. The control system includes an enclosure that can be placed within the CA room to store a representative sample of the commodities in the CA room. The control system includes an atmosphere valve selectively operable to provide atmospheric communication between the enclosure and the CA room or to isolate the enclosure from the CA room. The control system includes a sampling control system for determining a dynamic control value based on the isolated representative sample. The dynamic control value may be determined by monitoring the respiratory quotient in the enclosure while it is isolated. Once determined, the control system can use the dynamic control value to adjust the atmosphere of the CA room, thereby using tests on a representative sample to control the atmosphere for the full volume of commodities in the CA room. When not testing, the enclosure generally remains in atmospheric communication with the CA room, which improves the correlation of the representative sample with the commodities in the CA room.

The invention discloses a battery pack balanced management system, which comprises a battery pack module, a switch matrix module, a bidirectional DC-DC conversion module and a supercapacitor module, wherein the battery pack module comprises n serially connected single batteries; the switch matrix module is connected with the battery pack module and used for selecting and measuring the single batteries in the battery pack module; the bidirectional DC-DC conversion module is connected with the switch matrix module so as to charge or discharge the selected single batteries; and the supercapacitor module is connected with the bidirectional DC-DC conversion module and comprises a plurality of capacitors for storing energy. By means of the passive and lossless controllable power battery pack balanced system consisting of the switch matrix module, the bidirectional DC-DC conversion module and the supercapacitors, balanced precision and efficiency are improved, so that the service life of the power storage batteries is prolonged.

The invention discloses an active charge / discharge balancing system of a power battery, which comprises the following parts: a first part of a hardware frame for establishing a charge / discharge balancing system of a battery pack; a second part of a method for implementing balanced charge / discharge among battery packs; a third part of the implementation of the method which comprises the steps of judging the state of the battery pack and preparing for the charge / discharge, and controlling the charge / discharge of a single battery in the battery pack to realize in-group balance; and a fourth part of quitting a charge / discharge mode, storing charge / discharge data of the battery pack and displaying the charge / discharge data via a display. The active balanced charge / discharge system of the power battery can be used for charging and discharging power batteries of pure electric vehicles or hybrid electric vehicles. The traditional active balancing technique has the defects of bad balancing effect, high requirement on capacitance, inductance or a DC / DC converter, complex control and the like, and is difficult to balance charging and discharging processes at the same time. In the invention, the charge / discharge hardly wastes any energy and can be balanced rapidly. The invention has simple battery grouping technique and high reliability.

A storage compartment is combined with an air flow channel (5) between a passenger seat and an aircraft side wall in an aircraft cabin. The storage compartment is constructed of five walls forming a box (3) inserted into the air channel that extends longitudinally along the aircraft side wall and along the cabin floor. The box (3) is upwardly closed by a hinged cover (16) forming a tray (17). The aircraft side wall (2) has at least one air filter element (10) facing into the channel. One or more dado panels (7) with air flow passages (6) enclose the channel toward the cabin. A cabin floor (4) closes the channel (5) downwardly. One or more decompression flaps (15) in the floor (4) normally close the channel (5). Under normal operating conditions air flow into and out of the cabin passes around the box through the channel (5) and the filter element (10). Should a decompression occur the flap (15) is opened and pressure equalization is achieved by air flow through the openings in the cabin floor thereby bypassing the air filter element (10) for rapid pressure equalization in different spaces of the aircraft.

A battery module equalization apparatus according to the present disclosure includes a plurality of slave controllers each electrically connected to the plurality of battery modules to measure voltage values of the plurality of battery modules, and having a slave charging / discharging channel through which the current that charges and discharges each battery module flows, and a master controller that receives the voltage value of each battery module from the plurality of slave controllers, selects at least one of the plurality of slave controllers based on the received voltage value, and transmits a CHARGE or DISCHARGE command to the at least one selected slave controller, and having a master charging / discharging channel through which the charging current supplied to the at least one slave controller and the discharging current supplied from the at least one slave controller flow.

A device for the measurement of external pressure in a wristop instrument, such as a sports computer, a diving computer, a wristwatch, or the like, which includes an instrument body,—at least one watertight space disposed inside the instrument body, and at least one circuit board situated and a pressure sensor disposed in the watertight space. A flow path extends through the instrument body to the watertight space and this flow path is closed by a membrane, which is permeable by a gas, but not by water, and which closes the flow path in a watertight manner.

The invention discloses a balancing system for a battery pack, a balancing circuit and a method for controlling balancing of a battery pack, the battery pack includes multiple modules and each of the modules in the battery pack includes a subset of the cells. The balancing system for a battery pack includes a first balancing stage and a second balancing stage. The first balancing stage can balance an unbalanced module. The second balancing stage coupled to the first balancing stage can balance an unbalanced cell in a module. Via the balancing system, the circuit and the method in the invention, the technique effect of quick balancing can be realized.

The invention discloses a modular distributed battery management system and method for full life cycle use. Each battery module uploads voltage and temperature of its own, so as to help determine consistency of batteries and control and balance data, battery data is analyzed and processed in a centralized manner according to a total voltage of a battery pack, detected insulation and collected dataof each slave module and high voltage power, so as to determine a fault of a current battery and give out an early battery warning, battery SOC / SOH estimation is performed according to the data of the battery, remaining distance of an electric car is predicted and consistency of batteries and balance of control modules are determined. The system and method improve the reliability of the system and facilitate maintenance and replacement of the battery pack. Particularly, when a power battery pack is decommissioned, an intelligent battery module can be recombined to be directly used for batteryenergy storage, so that the battery pack reaches the full life cycle, and the use cost of the battery pack is lowered.

The invention discloses a bus-based battery pack equalizer circuit. The bus-based battery pack equalizer circuit comprises N batteries; each battery is connected with a corresponding equalizer circuit and the equalizer circuit is connected to a controller; each battery is connected with one equalizer circuit and each equalizer circuit is connected to one controller; the batteries correspond to the equalizer circuits one to one and the equalizer circuits correspond to the controllers one to one; the controllers are used for controlling the equalizer circuits according to the energy information of the battery pack, and thus realizing two-way flow of energy between the battery module and an energy transmission bus and realizing equalized energy storage of the batteries; the N controllers are connected in parallel to a data bus and the N batteries are connected in parallel to an energy transfer bus; N is greater than or equal to 2.

The invention provides a voltage balancing circuit used for a series super capacitors bank, and the voltage balancing circuit consists of a control logic device and an electrolytic capacitor. The control logic includes a divider circuit, a pulse generating circuit and a switch array. The voltage balancing circuit is connected with a super capacitor to be balanced. When the voltage difference of two adjacent supper capacitors exceeds the set range, the voltage balancing circuit transfers the electric charge from a high-voltage supper capacitor to a low-voltage supper capacitor, until the voltage difference of the high-voltage supper capacitor to the low-voltage supper capacitor enters into the set range. At that moment, the voltage balancing circuit stops working under the control of an internal empowering circuit and enters into a standby mode, and reduces the energy dissipation. The voltage balancing circuit has simple structure and low cost, can be installed easily, can effectively solve the problem that the voltage of a plurality of series super capacitors is not even.

The invention discloses an improved SVM equalization method and system for an NG-PON. The method in the invention comprises the steps of: (1), inserting training sequences into digital signals needingto be transmitted every the set length, generating electrical NRZ signals through high-rate NRZ modulation, and converting the high-rate electrical NRZ signals including the training sequences into optical NRZ signals; (2), transmitting the optical NRZ signals to a receiving end, and converting the received optical NRZ signals into the electrical NRZ signals; (3), performing up-sampling on the electrical NRZ signals, and performing down-sampling after time synchronization; (4), extracting the training sequences, constructing a characteristic value vector for each training sequence, and calculating an optimal hyperplane; (5), judging information sequences by utilizing the optimal hyperplane, so that equalization is realized; and (6), returning to the step (4) after equalization of the information sequences is completed every the set length. According to the improved SVM equalization method and system for the NG-PON disclosed by the invention, the problem that the receiving sensitivityof the system is decreased due to signal distortion, intersymbol interference and the like introduced by bandwidth limitation when high-rate signals are transmitted by a low-bandwidth device can be solved.

The invention belongs to the field of new energy vehicles and battery management systems, and particularly relates to an equalization structure for a vehicle-mounted composite power supply system andan equalization method of the equalization structure. The equalization structure comprises a power lithium battery module, a super capacitor module, a bidirectional high-low-voltage DC / DC converter, alithium battery switch matrix, a super capacitor switch matrix and an equalization controller. Disequilibrium of energy consumption of a power battery is achieved by means of the composite power supply system, so that the running effect of a power system is improved. A battery equalization control system collects working condition parameters of the composite power supply system in real time and makes a decision equalization scheme, a lithium battery and the super capacitor switch matrix control the starting and shutting of equalization, and the energy in the power battery is transferred intoa super capacitor through the high-low-voltage DC / DC converter. The balance control system realizes the dynamic and static balance of the power battery, improves the performance and efficiency of thepower battery, prolongs the service life of the power battery, improves the problem of thermal management in a equalization circuit, improves the follow-up routine of an electric vehicle and realizesthe real-time correction of an SOC value of the power battery.

The invention discloses a multi-winding-transformer-based automatic battery equalization circuit and an implementation method thereof. The automatic battery equalization circuit comprises a pluralityof battery groups, a micro controller, and multi-winding transformers. Each battery group consists of a plurality of single battery bodies and is provided with one multi-winding transformer; secondarywindings of all multi-winding transformers are connected in parallel and are connected with the corresponding battery groups by diodes; and positive and negative electrodes of the single battery bodies are connected with the corresponding transformer windings by switching tubes. The micro controller controls turning on or off of all switching tubes simultaneously. Automatic and simultaneous equalization from any single battery body to any single battery body among the multiple battery groups is realized by one path of PWM control signals.

The invention relates to an electric car lithium battery active balancing system based on a battery management chip LTC6804. A single-chip microcomputer collects battery voltage through a battery management chip, a lithium battery active balancing scheme is determined, bilateral switches formed by connecting N-MOSFETs and P-MOSFETs in series are used in balancing circuits, bidirectional transferring of energy can be achieved, two sets of bilateral switches only need one control signal, and the system control difficulty is greatly reduced. Each battery needs to be connected with a charging allowing switch in series, wrong charging is prevented, and the safety and reliability of the system are improved. Switching between the single-single balancing circuit and the single-overall balancing circuit can be achieved by controlling two N-MOSFETs, the circuit structure is clear, and control is convenient. A double-layer balancing circuit is formed by the single-single balancing circuit and the single-overall balancing circuit, and the optimal balancing effect is achieved through a power lithium battery pack. The circuit structure is simple, cost is low, the balancing speed is high, the circuits have hierarchy, modularization is easy, stacking of the balancing circuits is promoted, and the system can be widely applied to electric cars.

An equalizer for a digital communications system includes a first buffer to store received data prior to equalisation; a second buffer to store error-checked received data; a channel estimator coupled to the first and second buffers to determine a channel estimate using the received data from the first buffer and the error-checked data from the second buffer; and a control unit coupled to the channel estimator to update a channel estimate for use by the equalizer in equalizing the received data. The control unit performs the updating conditional upon a difference between the channel estimate and a previous channel estimate used for equalizing the received data. A look-up table is coupled to the control unit and a calculating device is coupled to the look-up table to calculate and store, in the look-up table, data obtained by applying the channel estimate to a sequence of symbols.

An actuating solenoid and a non-stick disk by means of which adhesion of an armature of an actuating solenoid to a pole core can be prevented. The non-stick disk is provided with at least one oil channel through which oil can be fed into the contact area between the non-stick disk and the armature or the pole core.

The invention discloses an active equalizing system for a multi-path energy transmission battery. The active equalizing system for the multi-path energy transmission battery comprises a total battery pack, an equalizing power supply unit, a battery equalizing module, an energy buffer module and an equalizing system host; the total battery pack is concatenated by more than one battery blocks and electrically connected with the battery equalizing module; one end of the equalizing power supply unit is electrically connected with the equalizing system host and the battery equalizing module respectively, and the other end is electrically connected to the battery pack; each battery equalizing module is electrically connected with the energy buffer module; the energy buffer module is an energy buffer device assisting the battery equalizing module, and the energy buffer module is connected to each battery equalizing module electrically; the equalizing system host analyzes, processes and displays the information sent by each battery equalizing module through the CAN bus, and controls the control strategy of each battery equalizing module. According to the invention, the structure design of the active equalizing system for the multi-path energy transmission battery is simple and reasonable, the cost is reduced, the stability of the system is improved, the inconsistency of the battery pack is improved, and the service life of the battery is extended.

The invention provides a voltage dynamic balance management system of a power lithium battery pack, which relates to a charging and discharging balancing circuit of a series power battery pack. The voltage dynamic balance management system comprises a microprocessor, Hall sensor modules, channel selecting modules, a switch driving circuit module and a DC / DC (Direct Current / Direct Current) transformer, wherein the microprocessor is used for gating a single battery in the battery pack by a first channel selecting module; an input end of the DC / DC transformer is connected with two ends of the battery pack; an output end of the DC / DC transformer is connected with two ends of the single battery by the switch driving circuit module and the switch driving circuit module; an input end of a first Hall sensor module is connected with a charging current input end and a discharging current output end of a charging and discharging switch; an output end of the first Hall sensor module is connected with the microprocessor; an input end of a second Hall sensor module is connected with a balancing charging current output end of the switch driving circuit module; an output end of the second Hall sensor module is connected with an input port of the microprocessor; an input end of the switch driving circuit module is connected with an output end of a second channel selecting module; and an output end of the circuit driving circuit module is connected with two ends of the single battery of the battery pack.

The invention relates to an energy storage battery pack equalization system which comprises a battery pack. The whole battery pack is divided into a plurality of groups and is equipped with a batterymanagement unit (BMU), an in-group converter, an inter-group converter and a switch group to accelerate equalization speed and prevent the excessive system complexity. An equalization scheme proposed by the invention can realize the internal power balance of a local battery group in the whole battery pack and realize the inter-group equalization of different local battery groups, the energy lossis small, the equalization speed is fast, the efficiency is high, the structure is simple, the cost is low, and the equalization scheme is suitable for a large-capacity battery energy storage system.

The invention relates to a method of producing a plurality of portions of a precooked food wherein the food is initially cooked at temperatures above 80° C. and prepared, the food is then cooled in a cooling phase within a maximum time of 120 min passing through the temperature range of 55° C. to 8° C. to a final temperature in the range of 8° C. to 0° C., and stored for a few days at the final temperature. The food is poured into an agitator vessel (22) during the cooling phase wherein the food is simultaneously thoroughly mixed and cooled during the cooling phase by an agitator (01, 26) constructed as a heat exchanger according to the invention.

The invention discloses a control method for a modular echelon utilization energy storage battery. An echelon utilization energy storage battery system is provided, wherein the echelon utilization energy storage battery system comprises a charging main circuit, an echelon utilization load circuit, an echelon utilization contact switch and multiple single lithium batteries; the multiple single lithium batteries are arranged between the positive electrode and the negative electrode of the charging main circuit in series; the echelon utilization contact switch is used for regulating the quantity of the single lithium batteries which are connected with the echelon utilization load circuit in parallel; any two adjacent single lithium batteries form a balance basic unit; each balance basic unit is provided with a shuttle balance capacitor; a bidirectional change-over switch is arranged at each of the positive electrode end and the negative electrode end of each shuttle balance capacitor separately; and two bidirectional change-over switches are alternately connected with the positive electrode and the negative electrode of the single lithium batteries in the balance basic units. By adoption of the control method provided by the invention, the electric energy echelon utilization of the power battery pack and the capacity balance of all the single lithium batteries can be realized.

The invention discloses a battery pack equalizing circuit and method. The circuit comprises a battery pack, a voltage collecting module used for collecting the voltage of single batteries in the battery pack, a switch switching module, a control module and at least one bidirectional DC-DC module, and the bidirectional DC-DC module is connected with the battery pack. The control module is used for judging whether the single batteries need to be equalized or not according to the collected voltage of the single batteries; when the judgment result is that the single batteries need to be equalized, the switch switching module is controlled to enable the single batteries needing to be equalized to be connected with the bidirectional DC-DC module, and then the bidirectional DC-DC module is controlled to enable energy to flow among the battery pack and the single batteries needing to be equalized. The battery pack equalizing circuit and method have the advantages that the radiating aim is achieved, the equalizing current is large, the equalizing speed is high, and the energy utilization rate is high. The battery pack equalizing circuit and method can be widely applied to the field of battery management.

The invention relates to a battery module balance control device and method. The device comprises: a battery module, a data acquisition module, a SOC estimation module, a fuzzy controller and an equalization circuit module, wherein the battery module is connected with the data acquisition module, the data acquisition module is connected with the SOC estimation module and the fuzzy controller, theSOC estimation module is connected with the fuzzy controller, the fuzzy controller is connected with the equalization circuit module, and the equalization circuit module is connected to the battery module. According to the method and the device, the battery real state judgment accuracy can be improved, the equalization current can be increased, the equalization time can be shortened, the control cost is low, equalization can be realized under the condition that the hardware structure of the current battery management system is not changed, the fault tolerance is high, and the occurrence of anover-equalization problem can be effectively prevented.

The invention discloses a voltage-sharing circuit for a series energy storage device and a voltage-sharing system comprising the voltage-sharing circuit, and relates to the technical field of large-scale series energy storage cell voltage balancing. The invention aims at solving problems that the conventional energy storage cell balancing technology is low in modularization degree and is slow in balancing speed. In the voltage-sharing circuit, two ends of each energy storage cell are in parallel connection with one primary side winding, and a secondary side winding of a multi-winding transformer and an energy storage device are connected in series to form a closed loop, wherein the numbers of turns of i primary side windings are equal. Switching circuits are used for the charging and discharging of the energy storage cells between the energy storage cells and the primary side windings, and the drive signals of all switching circuits are the same. m cascaded half-bridge converts and oneBoost converter are employed to achieve the voltage balance between m voltage-sharing circuits.

The invention relates to a multiple-mode high-efficiency energy equalizer for a lithium ion battery system and a control method thereof. The equalizer disclosed by the invention is composed of N gating switch matrixes, N inductors, N+1 master control switches Mk with anti-parallel diodes Dk, a fly-back transformer T, N+1 capacitors Ck, a voltage source E and N*m battery units Bij and battery unitequalizing modules Aij, wherein the gating switch matrixes are composed of upper bridge arm double-layer power switch matrixes H and lower bridge arm double-layer power switch matrixes S; each batteryunit equalizing module Aij is composed of two power switches and an inductor L; and the upper bridge arm power switch matrixes H and lower bridge arm power switch matrixes S are double-layer power switch matrixes composed of m pairs of power switches in series-opposing connection. According to the multiple-mode high-efficiency energy equalizer disclosed by the invention, electric isolation of a battery pack can be realized, mutual influences among different battery packs are avoided, the fly-back transformer serves as an energy conversion medium, the size of the equalizer is reduced, and thetopology circuit is simple in principle.

A novel process for activating available compressors in multiple compressor air conditioning systems, using an Optimum Stage-Up Process. This process is programmed into a controller as an algorithm, to provide a process for fast compressor start. This process shortens the time to initiate operation of compressors in a multi-compressor air conditioning system required to meet the demand call under any load condition, and hence shortens the time required for the actual sensed interior region air temperature to reach the interior region temperature set point. The Optimum Stage-up Algorithm estimates the number of compressor stages or steps that must be initiated, based on sensed or measured values, to meet the demand at any load condition. These measured values include the sensed temperature of the interior region being cooled, which is compared to the temperature set point of this interior region as well as measured mixed air temperature and supply air temperature.

The invention provides a four-single-body direct balancing device and method of a series energy storage body, relates to a series energy storage group balancing circuit, and aims at solving the problems that an existing balancing device cannot solve the problem of point-to-point direct energy transfer between any two energy storage single bodies, the energy balancing path is long and the energy balancing efficiency is low. The series energy storage body is formed by connecting four energy storage single bodies in series, wherein each two energy storage single bodies are taken as one group; the four-single-body direct balancing device comprises four coupling inductors and six two-way switches; direct energy transfer between any single bodies can be achieved through controlling the two-way switches; a Buck-Boost working mode is adopted during energy balancing within groups; and a flyback working mode is adopted during energy balancing between groups. According to the four-single-body direct balancing device and method of the series energy storage body, the implementation mode is simple, the energy transfer path in the balancing process is short, the balancing speed is relatively high and the balancing efficiency is relatively high.

The invention discloses a battery set equalization circuit based on a soft-switch full bridge circuit and a method. The battery set equalization circuit comprises a battery set equipped with multiple battery monomers, a voltage collection circuit, a switching circuit, a controller and at least one soft-switch full bridge bi-directional DC-DC circuit. The method comprises the steps that the voltage collection circuit collects voltages of each battery monomer in the battery set; according to the collected voltages of each battery monomer, whether equalization shall be implemented to the battery monomer is judged; if the judgment result indicates that the battery monomer requires the equalization, the controller can control the switching circuit, so that the battery monomer in need of the equalization can be connected to the soft-switch full bridge bi-directional DC-DC circuit; and the soft-switch full bridge bi-directional DC-DC circuit is controlled, so that energy can flow between the battery set and the battery monomer in need of the equalization. The equalization circuit disclosed by the invention can provide an equalizing current of 10A or more than 10A, and can satisfy the demand of large-power equipment for the equalizing current of 10A or even more than 10A. The circuit and the method disclosed by the invention can be widely applied in the field of battery equalization.