DaveofDurham Posted October 22, 2014 Report Share Posted October 22, 2014 Even though my 2000 Honda Insight has been gone since I got my C-Max, I still get occasional Honda hybrid list serve messages. This one on a smart monitor for the 12v battery came today. Full article at http://www.codeproject.com/Articles/831094/Smart-Monitor-for-Automotive-Battery Many modern types of batteries (such as lithium batteries) are designed with a smart battery chip built in, which provides a great deal of information about their state of charge and so on. Lead acid batteries are commonly made simple and lack any kind of smart battery chip in them, leaving the automotive shop with the task to test battery. Yet there is enough room in any motor vehicle to have a tiny sensor which can monitor lead acid battery at real time, so a small project was created to get proper hardware and software to work together to provide smart battery like features for automotive battery.A simple and non-intrusive approach was used so that no cables or wires are to be cut or disconnected in the automobile, only probes are attached to battery terminals, and one non-contact current sensor on battery cable. . . Described below automotive battery smart monitor (battmon) has significant capabilities to obtain, display and record several key battery parameters, and figure out several other battery properties based on several charge or engine starting cycles to notify user about battery health and life expectancy. The following raw automotive battery parameters are displayed and recordedBattery currentBattery voltageBattery temperatureBased on them, the above data from automotive battery, the following battery parameters are computed, displayed live at run time and logged to SD card as wellState of Charge SoC (0 to 100%), separately, whileChargingAt restDischargingEngine Starting: Current draw and DurationBattery Internal ResistanceBattery cranking amperes (CA), and if temperature is low enough, then cold cranking amperes (CCA)Number of charge-discharge cyclesEstimated battery capacity (A*Hrs) based on coulombic charge accepted and charge releasedCharging timeBattmon can provide important battery health information:within secondswithout the need to remove battery from automobileon motor vehicle while driving, when parked, and when engine is off . . . kostby and ptjones 2 Quote Link to comment Share on other sites More sharing options...
ptjones Posted October 22, 2014 Report Share Posted October 22, 2014 Great Idea, but the solution is to be able to monitor all the CMAX computers to see what is going on to cause the discharge of 12v batt. IMO :) Paul Quote Link to comment Share on other sites More sharing options...
Adrian_L Posted October 22, 2014 Report Share Posted October 22, 2014 Man, I love gadgets. Thanks for the info. Quote Link to comment Share on other sites More sharing options...
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