50 results about "Coulometer" patented technology

In a gas gauge, effects due to changes in the local environment are reduced by causing a measurement nozzle and a reference nozzle to react as if they were co-located, or located at approximately the same position. This is achieved by venting the reference nozzle in very close proximity to the measurement nozzle. A reference chamber surrounding the reference plate and reference nozzle is vented at approximately the same location as the measurement nozzle. In an embodiment for use in a vacuum environment, the measurement nozzle is surrounded with an annular ring. The measurement annular ring is connected to an annular ring around the reference nozzle, which acts to co-locate the reference nozzle and the measurement nozzle. To avoid choked flow, another annular ring or rings may be placed around the measurement annular ring.

The invention discloses a method and system for testing battery electricity quantity. The method comprises following steps: battery load current is calculated according to obtained battery internal resistance and battery load voltage; electricity quantity loss or increment is calculated according to the battery load current; initial battery electricity quantity is obtained according to obtained battery no-load voltage; current battery electricity quantity is calculated according to the battery total electricity quantity, the initial battery electricity quantity, and the electricity quantity loss or increment. By use of the method, discharge test is performed to batteries of the same kind to obtain relative parameters such as battery internal resistance, battery load voltage, battery no-load voltage, battery total electricity quantity, and initial battery quantity, of the batteries, and then a series of mathematical operations are performed to obtain the current battery electricity quantity. As a result, coulometer modules specially installed for measuring battery electricity quantity are saved so that the cost of mobile terminals or electronic devices is greatly reduced and therefore the method and system have stronger market competitiveness.

The present invention discloses a power supply management system for a solar energy unmanned aerial vehicle. The system comprise a MPPT (Maximum Power Point Tracking) module, an illumination sensor, a direct current boosting module, a coulometer, a plurality of relays and a master control module. The illumination sensor is connected with the master control module, the MPPT module is connected with a solar panel, the MPPT module is connected with a power system and an energy storage battery, the energy storage battery is connected with a power motor through a second relay, and the energy storage battery is connected with the master control module through the coulometer. The mode of utilizing solar energy to preferentially supply power to the power system is employed, the residual electric energy is supplied to the energy storage battery, and if the power requirement is high, the two-way power supply mode is employed to add the electric energy provided by the power supply system. The power supply management system for the solar energy unmanned aerial vehicle is reasonable in structure and high in universality, can realize uninterruptible power supply, continuously charge the energy storage battery and perform switching selection of the power supply in different conditions so as to reduce the electric energy loss caused by various reasons.

The invention discloses a method and terminal for determining the residual electric energy of a terminal in order to provide a solution for accurately calculating the residual electric energy of the terminal without a coulometer. The method comprises steps that the terminal calculates the internal resistance value of a battery when being powered on every time; the terminal detects the acquired present current value of the battery and determines a voltage compensation value according to the internal resistance value and the present current value of the battery, detects the acquired present voltage value of the battery and compensates the present voltage value of the battery with a voltage compensation value; and the terminal determines the residual electric energy of the battery according to the voltage value after compensation.

The invention relates to a real-time energy detecting system for a wireless sensor network node. The real-time energy detecting system provided by the invention consists of a stand alone type coulometer chip DS2786 which is based on open-circuit voltage (OCV) and belongs to Maxim company, a control core which is an ultra low power microcontroller C8051F920 belonging to Silicon Laboratories company, and peripheral circuits thereof. The invention provides a hardware solving proposal for energy management of a low power-consumption wireless sensor network node; the solving proposal includes: according to the OCV of the battery being unused for a period of time, available electric quantity of a chargeable lithium ion battery and a lithium ion polymer battery is estimated; relative electric quantity is estimated by a coulometer when discharging at high speed; compensation is carried out according to the detected temperature data to obtain more accurate dump energy value of the battery.

Disclosed is a method and a device for detecting states of a battery and a battery pack. The disclosure obtains a first state of charge and a second state of charge of the battery by use of a charge calculation method and a method based on battery model, respectively. The charge calculation method is more accurate when the charge-discharge current is large and the method based on battery model performs better in handling a small current, so that a chemistry state of charge obtained by performing a weighted calculation for the first state of charge and the second state of charge can represent the real state of charge of the battery more precisely. The disclosure settles the difficulty on parameter extraction of the conventional model method, eliminates the influence of the accumulated error of the charge calculation method, and combines the advantages of the method based on the battery model and the coulometer method.

The invention relates to a battery capacity measuring method and device and equipment. The battery capacity measuring method comprises the following steps: filtering instantaneous open circuit voltageof a battery in a current period to obtain confidence voltage values of the current period; processing capacity intervals corresponding to the confidence voltage values of the current period with a coulometer method to obtain a capacity variation value of the current period; obtaining an accurate capacity value of the current period according to the capacity variation value and boundary capacityvalues of the capacity intervals, and determining the accurate capacity value of the current period as the current capacity of the battery. Based on the open-circuit voltage method and the coulometermethod, the influence of temperature and instantaneous voltage jitter errors and cumulative errors can be effectively reduced, accuracy is improved, so that the battery capacity is measured more accurately, and the fitting effect on real capacity is better.

A state of charge (SOC) gauge device for a battery includes a voltage variation detection unit, for detecting whether a variation of a battery voltage of the battery reaches a predefined threshold, to generate a detection result; and a coulometer, for calibrating a SOC of the battery according to the detection result.

The invention relates to an apparatus for environmental science research, in particular to a novel BOD (biochemical oxygen demand) determination system for continuous microorganism oxygen supply. The novel BOD determination system comprises a continuous oxygen supply unit, a measuring unit, a constant-temperature culture device, a magnetic stirring device and a software recording module for controlling the whole system. An operating principle of the novel BOD determination system includes that microorganisms are biodegraded in a reaction vessel under the normal pressure and at the constant temperature to consume oxygen to produce carbon dioxide, the carbon dioxide is absorbed by carbon dioxide absorbents on the upper portion of the reaction vessel, pressure in the reaction vessel is reduced so as to generate a pressure difference, a circuit in a U-shaped tube is connected to promote a constant-current power supply module to be turned on, a copper sulphate solution in an electrolysis vessel is subjected to electrolysis to produce oxygen, and a coulometer module starts to record electrolysis electric charge quantity; the oxygen is supplemented into the reaction vessel to enable the pressure difference of a U-shaped tube pressure meter to vanish, the circuit is disconnected, the constant-current power supply module is turned off, the electrolysis vessel stops electrolysis, and the coulometer module stops recording; the software recording module is controlled to process experimental data. The novel BOD determination system for continuous microorganism oxygen supply is capable of providing continuous oxygen supply and achieving precise temperature control.

The invention relates to a method for measuring content of trace chlorine in high pure, ultra pure ammonia, comprising the following steps: quantitatively feeding high pure, ultra pure ammonia samples into a crack tube from a silicon rubber separator by a microliter injector, vaporizing the samples and entering the cracking tube together with a carrier gas, mixing with oxygen, burning the oxygen-mixed samples to convert organic chlorine into chloride ions, adding the burnt samples into a titration cell, thus the chloride ion reacts with silver ion and the amount of the consumed silver ion is electrolytically supplemented by a coulometer, and the electric amount required by electrolytic generation of the silver ion is the content of the chlorine injected into the samples. The electric amount for electrolysis is measured by a computer and the content of the chlorine in the high pure and ultra pure ammonia samples is calculated according to Faraday's law of electrolysis. The method is used for measuring the content of the chlorine in the high pure, ultra pure ammonia and has advantages of simple operation, no need of special process of the samples, quick analysis speed, high measurement precision and low detection limit of the method.

The invention discloses a rechargeable battery, which comprises a cathode mix, a protection circuit, a coulometer chip, a shell accommodating the cathode mix, the protection circuit and the coulometer chip, and at least three contact pieces arranged on the shell, wherein the protection circuit comprises a first switching element; the cathode mix comprises a first electrode and a second electrode, the first electrode is connected with the first contact piece via the protection circuit, the first electrode and the first contact piece are directly or indirectly connected with the first switching element respectively, and the second electrode is connected with the second contact piece via the protection circuit; the first interface of the coulometer chip is connected with the first electrode, the second interface is connected with the second electrode, and the third interface is connected with the third contact piece. The invention also discloses a charging management circuit, an electronic device and a charger. Through the above mode, the cathode mix voltage can be directly acquired, influences from contact impedance between the first switching element in the protection circuit, an external detection circuit and the third contact piece do not exist, the battery voltage detection accuracy is improved, and the charging control precision is improved.

The invention provides a vehicle battery electric quantity monitoring and reminding device, including a vehicle batteries, a coulometer connected in series with the vehicle battery, an MCU module connected in parallel with the vehicle battery and a signal transceiver module connected in signal with the MCU module. The MCU module stores the initial power S0 of the vehicle battery, and the working time tn of the vehicle battery is recorded. The coulometer is used for acquiring and delivering circuit current In flowing through the coulometer. The MCU module is capable of obtaining remaining working time Tn and residual electric quantity Sn according to the obtained circuit current In, the initial electric quantity of the vehicle battery S0 and the working time tn. The signal transceiver module is configured to transmit electric quantity information of the vehicle battery to a mobile terminal periodically or when the remaining electric quantity Sn of the vehicle battery is less than or equal to the minimum remaining electric quantity Smin or when the remaining working time Tn of the vehicle battery is less than or equal to the minimum remaining working time Tmin of the vehicle- battery. The invention also provides a vehicle battery electric quantity monitoring and reminding method.

The invention discloses a management system for charging of an elevator system battery, a method and a storage medium. The management system comprises a power supply storage emergency device, a battery charging management board and a battery. The power supply stoppage emergency device charges the battery through the battery charging management board to the first capacity of the battery. The firstcapacity is obtained based on a current-day idle time power and a current-day busy time power of the elevator system. The battery charging management board further comprises a coulometer which is usedfor detecting the residual capacity of the battery. The power supply stoppage emergency device is further used for charging the battery to the first capacity when the residual capacity is lower thanor equal with a second capacity of the battery, thereby always keeping charging-and-discharging of the battery in a non-full and multiple-charging-and-discharging state. The charging mode facilitatesprolonging of service life of the battery and realizes short supplementary charging time at each time. The battery is in a dormant standby state except for emergency power supply time and charging time, thereby prolonging service life of the battery.

The invention discloses a method for evaluating a small current variable by apparent power, and belongs to the technical field of electromagnetic measurement. The method comprises the steps of S1, detecting a small current on a line; S2, collecting the current detected in the step S1, and multiplying the current by a given apparent voltage to obtain apparent power; S3, accumulating the apparent power obtained in the step S2 in real time to obtain apparent electric quantity; and S4, reading the apparent electric quantity in the step S3 once at an interval T, calculating the variation of the apparent electric quantity in each time period, comparing the relative variation amplitude of the apparent electric quantity variations in two adjacent time periods, and making a decision of continuing to detect or report according to the relative variation amplitude. According to the judgment method, the change trend of the damage energy in the line is automatically judged according to the change amplitude of the apparent electric quantity in the adjacent same-length time periods, the development situation of the damage energy is mastered, and an early warning signal is given when the increase amplitude is large, so that workers are reminded to take security check measures, safe production is ensured, the waste of raw materials is avoided, and the loss is reduced.

The invention discloses a soldering technology of an electronic module. According to the soldering technology of the electronic module, a substrate is cleaned in an ultrasonic cleaning manner in the step (1), so that fine particles on the surface of the substrate can be thoroughly cleaned up through the ultrasonic cleaning manner; a resin type soldering flux is adopted in the step (5), and the resin type soldering flux is low in acid value, free of toxicity and harm and capable of being widely applied to soldering technologies and has the soldering assisting function; two kinds of solder are applied to a PCB and a lithium battery in the step (6) and the step (7) for different characteristics of the elements, and therefore the soldering quality is guaranteed; and in the step (8), the electricity detecting manner is that a coulometer is used for detecting the current of each soldered element when the soldered element is connected with a 220-V power source and judging whether a soldered portion is in short circuit or not, by the adoption of the manner, all the parts of each element can be detected, the pertinence is achieved, and the soldering condition of each element can be more easily judged.

The invention relates to a power monitoring system and method for a smart building, and the system comprises a power data obtaining module which comprises a plurality of node coulometers which are electrically connected to a node line of a building power grid in a distributed manner, and are used for obtaining the power data of nodes in the building; an electric power data marking module which isused for marking the acquired electric power data in the building at a corresponding position in a pre-constructed building electric power three-dimensional model; and an electric power data monitoring module which is used for carrying out electric power analysis on the building electric power three-dimensional model marked with the electric power data, generating alarm information in the buildingelectric power three-dimensional model according to an analysis result, and monitoring an electric power network in the building in real time according to the alarm information. According to the invention, three-dimensional monitoring is carried out on the power data in the building through the building power three-dimensional model, so that the monitoring effect can be improved and the monitoring is more vivid; in addition, users and emergency electric power can be separately monitored at the same time, monitoring division is clear, and the monitoring effect is good.

The invention relates to a line loss calculation method. The method comprises the following steps: 1, calculating the electric quantity of each device, and analyzing the electric quantity of each measuring point device according to the line loss of a distribution line; 2, manufacturing line section equipment, searching the topological equipment at the front end and the rear end of each section and in the section, making quantity, equipment keys and section power supply lines, and making the line operation mode change states through interconnection switch operation state changes; 3, checking the electric quantity data: checking the electric quantity data according to the line operation state information generated by the line section equipment in the step 2; 4, section line loss calculation: calculating the line loss of the section according to the number of the devices of each section formed in the step 2 and the electric quantity data checking result in the step 3; 5, section line loss abnormity judgment: comparing the line loss rate of each section of the line with a set threshold value, and outputting alarm information through an alarm service when the line loss rate exceeds the threshold value. The method has the advantages that the equipment electric quantity is quickly and conveniently generated, and line loss analysis is carried out on each section.

A single chip microcomputer (SCM) and a communication circuit with DALLAS single-wire bus protocol belong to communication structures and particularly relate to a SCM and a communication structure with the DALLAS single-wire bus protocol which are adopted to realize low-power communication between the SCM and the DALLAS single-wire bus protocol and mainly used to perform DALLAS single-wire bus protocol communication between the special coulometer chip DS2781 of the MAXIM company and the ATMEGA48 microcontroller of the ATMEL company. The invention provides the SCM and communication structure with the DALLAS single-wire bus protocol, for reducing the energy consumption of the system. The communication circuit contains the SCM and a coulometer chip, wherein the pin 25 of the SCM is connected with the pin 5 of the coulometer chip, the connection point of the pin 25 and the pin 5 is connected with one end of a pull-up resistor, and the other end of the pull-up resistor is connected with the pin 23 of the SCM.