11/7/2022 0 Comments Inpa bmw battery registrationAdditionally, all these parameters are changing, depending on temperature (and this dependency is completely different for different battery models/manufacturers). Additionally to this parameter, also the true capacity of the battery should be detected, in the same time – deep discharge cannot be allowed, because in this case can be problems with starting the car. So, to detect SOC, several methods are used in the same time (parallel): the voltage of battery discharge in slow discharge phase (when the car”sleeps”), changes of this voltage, when the battery is charged/discharged for exact number of Ah, are measured charging the battery, the “saturation” threshold is looked for – at the moment, when the battery doesn’t “absorbs” energy anymore, it’s fully charged. For example, a difference of just +/-1 % from ideal (average) value of the voltage will create SOC mistake of around 40 %! each production party and each battery has slight differences from average parameters.some battery manufacturers add different additives to lead plates of the batteries (to reduce degradation of plates, to upgrade its parameters), which a little bit, but still, change the voltage of battery – “numbers” mentioned before don’t correspond anymore.changes in this voltage are very tiny: +/-2,5 % (against the absolute value), which means – measurements have to be done very accurately.this voltage is indicated for the temperature of 20 oC, in other temperatures it changes.voltage has to be measured around 2 hours after a charge of the battery because directly after charging the voltage will be increased.100 % SOC corresponds to the voltage of 12.2. Slight derogation – I will shortly explain, how you can (try) define SOC of the battery. Obviously, some data thou is not cleaned correctly! Additionally, these are not statistic data (as, for example, data regarding the temperature of the battery), but much more important data – SOC is, possibly, the most important data in whole IBS system!ĭeleting of these data (everything, what is connected with a profile of the battery and SOC) is critically important! Determination of SOC is a very complicated task. SOC data don’t correspond in both data groups – in the correct situation, SOC actual value is dubbed on the right side column of data.99.X % (this is usually the initial value of SOC after replacing the battery it changes depending of is the engine turned or not) not taking into account not-performed tests, actual SOC is displayed as different from 97.X.Launch has correctly cleaned test counter of the battery (it indicates 0), but SOC (directly after registering) has fundamental problems: Here, from this moment it becomes more interesting. 10 minutes the energy counters correctly calculated discharge of battery – IBS sensor was sending data, everything looked perfect. group of energetical counters of battery cleaned: correct.ĭuring next 5.counters of battery charge and temperature are cleaned: correct.really, the replacement of battery – registered (odometer readings: correct).Let’s connect INPA and check the data of all available registers. Here, Launch confirms, that the registration of battery is completed. But I got a hint, on what base is Launch built (didn’t spending my time to investigate it). Developers of Launch have not taken into account this nuance (or – even haven’t noticed it). INPA (obviously, Launch uses INPA script) shows +1 Ah against the true value. Here we see one inaccuracy: actually, the capacity of the registered battery is 90 Ah (according to ISTA D). Exception: current SOC is not availble!Īnd now – let’s start coding of battery replacement! These data correspond with INPA and ISTA D. At first let’s check, does the Launch correctly reads status data of the battery. SOH is positive (value – correct), but data counters of energetical balance have gone to the “second circle” SOC data regularly incorrect (unavailable) the energetical balance of the day – with incorrect values.Īs we see, for the car, which is more than 10+ years old, no battery was registered.Ĭonnect Launch. Here, IBS data of car before registering the battery: Task – to understand, does Launch performs at the same level (at least in the level of available data) as ISTA D. Today’s experiment – a battery of E60 will be registered with Launch, then data will be checked with INPA. Part of these products are actually using BMW databases and scripts, but the interface is more modern and more simple for the user. In addition – very accessible.īut there are persons, who choose alternative products, developed by the third side, for example, Carly, Pro Tools, Launch, etc. In my work, I use only tools, created by professionals of BMW AG – for now, they are the most powerful of available ones.
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