Battery Testing with the Calculated Discharge Curve Method-3D Mathematical Model

• 作者: Aleksandar B. Djordjevic Dusan M. Karanovic
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: N-Set VOLTAGE TIME INTERVAL TIME Sub-Intervals Capacities ENERGIES
• 年，卷（期）: dlnyyw_2015,（1）
• 页码范围: 37-52
• 页数: 16页
• 分类号: R73

摘要

The calculated discharge curve method is based on thermodynamically reversible work: The product of the open-circuit voltage, initial current, and time, i.e., the sum of useful energy and energy losses. A calculated discharge curve is based on the constant step change of the battery voltage in correspondence with a cardinal number set. The essential solution is the transformation of the discharge data voltage vs. time into time vs. voltage using basic equations (three-point operators: power of internal resistance and time), which are valid for all battery electrochemical systems, battery designs and discharge conditions. The mono and multi-cell battery operating conditions consist of the following: 1) The four discharge modes by constant loads: resistor, current, voltage, and power;2) Two load regimes: Self-driving and device-driving (galvanostat, potentiostat) or battery connection (serial, parallel, combine);and 3) Continual and intermittent discharge. The battery average cell and cell/battery average characteristics, regarding time and capacities, are introduced as the new battery characteristics.