Battery Voltage Monitoring Research Articles

Design of Isolated Voltage Sampling Circuit Based on HCNR201

With the continuous development of new energy technology, the photovoltaic system plays an extremely important role in people’s production and life, and new energy. As an indispensable part of a photovoltaic system, the battery voltage monitoring circuit plays a very important role. The voltage of the photovoltaic battery pack is usually relatively high. To ensure the safety of users and ensure that the controller is not affected by other adverse factors, this paper designs a voltage sampling circuit based on a high-precision linear optocoupler HCNR201. The detection circuit has strong electrical isolation characteristics and can monitor the voltage of two or more battery groups. In this paper, two groups of battery voltage monitoring using simulation and hardware test results proved that the voltage detection method has good linearity, and high accuracy, while the input and output of electrical isolation ensure user safety.

Arduino-Based Battery Voltage Monitoring and SMS Gateway

This study aims to monitor the value of the voltage on the battery using a voltage sensor and using the State of Charge method to estimate the charged power of the VRLA battery remotely by utilizing SMS Gateway-based technology so that checking is no longer necessary. The results obtained are displayed on the smartphone in the form of an SMS. To determine the SOC in a 12V VRLA battery, it is calculated based on the number of each cell. VRLA 12V has 6 cells, each cell consisting of 2V to 2.4Volt. The capacity of a VRLA battery in 1 cell is declared 100% full at a voltage of 2.3 volts. So that data is obtained to determine the full percentage of the VRLA 12V 6 cell battery with a capacity of 7.2Ah, namely 13.8V. Experiments were carried out using solar panels, VRLA batteries, voltage sensors, Arduino UNO, and GSM SIM900A modules. This study succeeded in reading the measured voltage value with the sensor, and obtained an error value of 0.20 and a standard deviation of 0.02, and for the monitoring process to run smoothly without problems.

SOC-ASIC (State-of-Charge-Application Specific Integrated Circuit), A Battery Voltage Monitoring System for Series-Connected Battery Cells in Electric Vehicle for State-of-Charge Estimation

SOC-ASIC (State-of-Charge-Application Specific Integrated Circuit), A Battery Voltage Monitoring System for Series-Connected Battery Cells in Electric Vehicle for State-of-Charge Estimation

Inertia Load Analysis of Structural Element Mounting Plate for Section-IV of an Aerospace Vehicle under Pitching Condition

Aerospace vehicle is divided into number of sections. One of the Sections, Section–IV contains Avionics Batteries and other Aerospace electronics sub-systems. The Section-IV contains an Interface Mounting plate of given Size and dimensions accommodating thermal batteries for control actuation system (3 Nos), Primary Avionics battery (1 No), Battery Voltage Monitoring Circuit (BVMC) package, Secondary Avionics Battery and Contractor Box.Thermal Batteries and Primary Avionics Battery are mounted on the plate using clamps and brackets and other electronic units like BVMC, Secondary Avionics Battery & Contractor Box are mounted using fasteners. The modeling of Mounting Plate is done using CAD software, Pro-Engineer Wildfire 5.0 and Analysis is carried out using Analysis CAE Software, ANSYS 12.0. The results are interpreted with various loads and matched with theoretical calculations. The Factor of Safety of Mounting Plate is found within the limits and hence the overall design is found to be safe for Aerospace application

Battery pack topology structure on state-of-charge estimation accuracy in electric vehicles

Battery inconsistency are exacerbated by the resistance of inter-cell connecting plate (RICP) and the input impedance of battery voltage monitoring system (IIBVMS), both of which cannot be eliminated in a battery pack. Experiments show that the inconsistency distribution and SOC deviation in a battery pack is restricted by RICP and IIBVMS. In this paper, a “parallel-series” battery pack model is proposed and validated. The effects of RICP and IIBVMS on SOC deviation are analyzed. Results indicate that RICP causes unevenly current flowing through each in-parallel battery cell, and so the battery cell directly connected to the battery module posts presents the lowest SOC. In order to restrict SOC deviation to an acceptable level, the equivalent relation of the battery inconsistency caused by RICP to the inherent inconsistency is discussed. The reasonable matching RICP is then presented. IIBVMS causes different current leakage in each voltage sampling line. The closer the battery module connects to the positive terminal of a battery pack, the higher leakage current is. The different leakage current in each voltage sampling line exacerbates battery inconsistency and causes different initial SOC for each battery module. The relationship among the leakage current, the input impedance and the number of in-series battery modules are discussed. And an improved schematic diagram of battery module voltage sampling is further presented to lower the leakage current and to solve the sampling time delay caused by the multi-switch.

Design of the Monitoring and Matching System of the Visualization Battery Unit Based on PC Machine

By analyzing the application of the battery, the battery voltage monitoring system, lower computer and host computer communication system, and host computer visualization VB6.0 monitoring with battery group platform are designed based on multi-channel multi-MCU and the PC-based interactive respectively. In addition, the corresponding softwares are designed to achieve optimization of static and dynamic parameters matching. Practice has proved that the design has a fairly value for further perfecting the optimization of the battery matching.

Remote monitoring of VRLA batteries for telecommunications systems

This paper describes a remote monitoring system that can be set up in an operating center to monitor the state of valve regulated lead acid batteries (VRLA) used as a backup power supply for telecommunications. This system has a battery voltage monitoring function, a lifetime prediction function based on ambient temperature, and a discharge circuit diagnosis function. In addition, the system can be equipped with an internal resistance measurement function and an electrolyte leakage detection function to further insure power-supply reliability. Various states of batteries observed with the system are transmitted to the remote operating center by a remote monitoring function. This function enables obtaining immediate information about the condition of batteries and helps to avoid unexpected failures.

Earthquake signal processing and logging with a battery-powered microcomputer

abstract A low power microprocessor controlled event-triggered seismic data logging system has been designed and implemented in the ocean bottom seismic capsule. Three channels of seismic data are digitized, formated, and stored under control of an Intersil IM6100 microprocessor chip. The processor also controls event triggering, acoustic diagnostics, battery voltage monitoring, and self-diagnostic functions. A watchdog system restarts it in the rare case of a failure of proper program sequencing. The entire system consumes less than 0.15 watts in the idle mode. The event triggering algorithm consists of first measuring the ratio of the short-term signal average to the long-term signal average, with amplifier offset removed (STA/LTA ratio). When an STA/LTA trigger occurs, the number of slope reversals in the signal begin to be counted. After a preset time following the first STA/LTA trigger, if the number of subsequent STA/LTA triggers meet preset criteria, a system trigger is declared and data is stored on a 4-track Braemar cassette tape deck with 15-M-bit capacity. Various system diagnostics, unit and experiment identification, and battery voltages are recorded at the beginning of each new event record. Digital filters for the long- and short-term averages, and antialiasing have been efficiently implemented by dividing or multiplying by factors of 2, exclusively. This amounts to a shift right or left of a binary number. The recording system has been tested in numerous field experiments. Circuit cards from the ocean bottom capsule implementation are being assembled and used for land stations and could be applied to a wide variety of data acquisition tasks.