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Preh to Supply i3 with battery management ECUs

03.05.2014

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 Preh to Supply i3 with battery management ECUs.

(2014/03/05): Ningbo China / NOVI, Mich.  Preh has developed the battery management ECUs for the fully electric BMW i3. Both units are produced at the auto supplier’s headquarters in Bad Neustadt, Germany. In addition, Preh supplies control systems for the i3’s interior: the iDrive Touch Controllerthe so-called Driving Experience Control.


The battery management control components comprise the electronic control unit types BMU the CSSU.

The battery management control components comprise the electronic control unit types BMU (battery management unit)the CSSU (cell supervising sensor unit). These control units provide a uniform charge for the high-voltage battery for optimum battery performance. The high-voltage batteries are always in use, due to energy consumption in electric-only driving, as well as through the energy recovery during brakingwhile charging. Moreover, the battery cells have typically different charge levels depending on the degree of agingmanufacturing tolerances. For this reason, the CSSUs permanently monitor every single battery cell with regard to voltagealso temperature. These data will be processed in the battery management unit to offset the different charging states (balancing),to ensure optimum battery performance.


Preh supplies control systems for the i3’s interior.

In addition to the i3, other vehicles of the Munich manufacturer have Preh battery management know-how onboard. These include the purely electrically powered BMW ActiveE, as well as hybrid vehicles, including the ActiveHybrid 5also the BMW C evolution e-scooter.

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