Modern thinking favors the exclusive use of lead-acid batteries in the sealed glass mat version (AGM), nicket-metal-hydride batteries (NiMH) and double-layer capacitors (DLC) as electrical energy storage devices in the vehicles of the future that feature e.g. 42 V electrical systems. Yet a more critical investigation of these storage devices shows that using these systems and these systems alone is not sufficient to fully meet all the needs of tomorrow's vehicle electrical systems. As a result of this, a system solution needs to be considered in the form of a combination of either two AGM batteries, one AGM and one NiMH battery or one AGM battery with a DLC in a redundant configuration. In the first instance, it appears that combination A is suitable for the requirements of modern vehicle electrical systems, albeit without the boost function and regenerative braking. The combination B is capable of performing all the above functions, and the combination C appears to be ideal for use in braking energy recovery situations, especially where twin-voltage electrical systems are used. An analysis of future battery requirements also clearly reveals that the storage device's status will also need to be constantly monitored. This requires, in addition to the technical aspects, a definition which is valid for all situations and a linkup of status parameters SOF, SOC and SOH. Initial results from the activities mentioned above are already available in the form of near-series samples for 36 V lead-acid batteries, 36 V NiMH batteries and electronic charge meters.


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    Title :

    Elektrische Speicher im 42 Volt-Bordnetz


    Additional title:

    Energy storage systems for the 42 V powernet


    Contributors:
    Richter, G. (author)


    Publication date :

    2001


    Size :

    15 Seiten, 20 Bilder, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    German





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