Shunt-based management system serves lithium-ion batteries

Date
05/13/2013

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Isabellenhütte, a leader in the development of precise shunt-based measurement technologies has introduced the IB4 battery-management system. Developed in cooperation with the company's Braunschweig-based development partner I+ME Actia, the system features 300 A current measurement, 1,000 A pulse and highly precise resolution of 10 mA, as well as a low measurement error range of just 0.4 percent of the measured value. The unit's power consumption is very low, 2.5 mA when the master switch is on and 1.5 mA when it is switched off. Numerous interfaces for communication, measurement value recording, and control allow the IB4 to be deployed flexibly. For example, two push switch inputs provide the opportunity to query the state of charge at the touch of a button. There are various analogue inputs, including those for the measurement of cell temperature, battery mode planning, total voltage, and hardware monitoring of cell voltages. There are also control outputs for a bistable relay, five LED charge indicator displayed, as well as two optional low-side switching outputs for special applications, e.g. heat monitoring. The IB4 from Isabellenhütte has an isolation voltage of 200 V. The current sensor is an 100-μOhm shunt. Isabellenhütte Heusler

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