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Impact of Manual Service Disconnect in an Automotive Traction Battery System (RESS)
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
Annotation ability available
SAE standards require the function of a Manual Service Disconnect (MSD), when open, to remove any voltage between positive and negative Rechargeable Energy Storage System (RESS) output terminals. Another SAE standard specifies that measured voltage across all external battery terminal sets shall be less than 60 VDC within 5 seconds after the manual disconnect is actuated with the automatic disconnect (e.g., contactors) closed. In this paper, the location of the manual service disconnect is reviewed to meet isolation requirement of the battery pack system (i.e., RESS). Battery architectures with manual service disconnect located at the most positive side, most negative side, and center of the array or the pack were studied. Voltage measurement points and single point failure modes were considered. It was found that MSD location for a single contactor pack is most effective in reducing voltage potential at the terminals when placed on the other side of the contactor. Optimum location and design of service disconnect offer a battery system installed, utilized, and serviced effectively in an electrified vehicle.
|Ground Vehicle Standard||Battery Terminology|
|Ground Vehicle Standard||SAE Electrical Energy Storage Device Labeling Recommended Practice|
|Ground Vehicle Standard||Recommended Practices (RP) for Shipping Transport and Handling of Automotive-Type Battery System - Lithium Ion|
CitationKimoto, M., "Impact of Manual Service Disconnect in an Automotive Traction Battery System (RESS)," SAE Technical Paper 2017-01-1195, 2017, https://doi.org/10.4271/2017-01-1195.
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