Abstract
This paper presents a method for evaluating the availability of lead-acid battery test equipment and designs the corresponding evaluation mathematical model. International standard IEC60896-2 specifies the lead-acid battery internal resistance level. Because the internal resistance value is usually micro-Ohm level and the lead-acid battery has special electrochemical characteristics, it’s very difficult to measure it. Until now no authority can officially provides the actual resistance value for a given battery. However, the industry has agreed that the internal resistance will gradually increases during the use of the battery and the performance of the battery has close relationship with the change of the internal resistance, so even if the measurement equipment can not measure the absolute actual resistance, but as long as the battery can be measured a small change in internal resistance, it has a high availability. In this paper, we propose a micro-incremental verification method and a mathematical model to facilitate, accurately and quickly verify whether the battery internal resistance test equipment can accurately and stably measure the internal resistance of the battery, and provide technical verification reference for selecting the battery measuring equipment.
Highlights
Lead-acid batteries provide backup power and have been widely used in DC power systems and uninterruptible power supply system
The IEC60896-2 standard specifies the resistance level of the lead-acid battery and define a standard secondary discharge method to measure the internal resistance of the battery, the secondary discharge method requires a smooth control of very short and high current and measurement, this measurement method is currently only applicable to the laboratory, commercial battery testing equipment will generally use their own research and development technology, which led to the bad situation that there is no uniform standard for internal resistance measurements, and the relevant national certification laboratories do not provide standard actual measurements
Resistance value measured by different measurement equipment is different and we have no idea that which test value is correct
Summary
Lead-acid batteries provide backup power and have been widely used in DC power systems and uninterruptible power supply system. The methods and mathematical models for evaluating the internal resistance test equipment of lead-acid battery are considered, we consider the change rate of internal resistance, the change rate of micro-incremental resistance, and the allowable repetition test precision of the equipment itself. This data model validates the measurement stability, repeatability and sensitivity of the battery resistance test equipment to infer the availability of the equipment. Accuracy Evaluation Scheme Design of Resistance Measurement Device for Lead-acid Battery
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
