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Impact of Manual Service Disconnect in an Automotive Traction Battery System (RESS)
Technical Paper
2017-01-1195
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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.
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Authors
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Citation
Kimoto, 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.Also In
References
- SAE International Surface Vehicle Recommended Practice Guidelines for Electric Vehicle Safety SAE Standard J2344 Mar 2010
- SAE International Surface Vehicle Recommended Practice Hybrid and EV First and Second Responder Recommended Practice Nov 2012
- SAE International Surface Vehicle Recommended Practice Safety Standard for Electric and Hybrid Vehicle Propulsion Battery Systems Utilizing Lithium-based Rechargeable Cells SAE Standard J2929 Feb 2013
- SAE International Vehicle Information Report Electric-Drive Battery Pack System: Functional Guidelines SAE Standard J2289 Jul 2008