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SAE J1634_BatteryElectricVehicleEnergyConsumptionandRangeTestProcedure.pdf

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SAE J1634_BATTERYELECTRICVEHICLEENERGYCONSUMPTIONANDRANGETESTPROCEDURE
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__________________________________________________________________________________________________________________________________________ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright ? 2012 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerService@sae.org SAE WEB ADDRESS: http://www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http://www.sae.org/technical/standards/J1634_201210SURFACE VEHICLE RECOMMENDED PRACTICE J1634 OCT2012 Issued 1993-05 Revised 2012-10 Superseding J1634 OCT2002 Battery Electric Vehicle Energy Consumption and Range Test Procedure RATIONALE The procedure has been revised in order to provide new methods for testing Battery Electric Vehicles (BEVs). These methods are intended to both improve testing efficiency and provide a practical testing methodology that can be easily adapted to accommodate future testing enhancements. FOREWORD Historically, the determination of range and energy consumption for Battery Electric Vehicles has relied on a Single-Cycle Test (SCT) methodology. The SCT requires that a vehicle be repeatedly driven over the same speed vs. time profile (i.e., drive cycle) until the vehicle’s battery energy is completely exhausted. The long and indeterminate nature of the SCT places significant logistical strains on test facilities, a situation that will worsen as battery technology advancements enable even greater range capability. It is also possible that additional test cycles - beyond the currently required UDDS (“City”) and HFEDS (“Highway”) cycles - will be necessary in order to better characterize the effects of temperature and accessory loads on range performance, making the SCT paradigm even less practical. For these reasons, a Multi-Cycle Test (MCT) procedure has been developed. The MCT method enables range and AC energy consumption determinations for multiple drive cycle types using a single full depletion test. This is accomplished by measuring: (1) the DC energy consumption for each included cycle type, and (2) the battery’s useable DC energy content. Given the total energy content of the battery, the range for each drive cycle type follows directly from its respective energy consumption. Similarly, the appropriate quantity of AC recharge energy attributable to each drive cycle can be determined according to its respective DC energy consumption. The MCT method is applicable to vehicles powered by lithium ion batteries and tested using the existing standard drive cycles; new battery technologies, new drive schedules, or significantly different vehicle designs should be evaluated to determine if method remains applicable. Significant reductions in the testing resources needed to produce both a City and Highway range determination are possible using the MCT method. For example, a BEV with a 150 mile unadjusted UDDS range would consume about 18 ? hours of total dynamometer test time in order to perform the necessary City and Highway SCT tests. The same City and Highway range determinations could be accomplished in about 4 ? hours using a single MCT (a reduction of over 75%). Given a 200 mile UDDS range, the differential between the on-dyno test times increases further to 24 ? hours and 5 ? hours, respectively, for the SCT and MCT. These estimates do not account for the additional savings that accrue from the elimination of one of the two recharging periods required by the SCT procedure. Additionally, the MCT test sequence can easily accommodate new test cycles and may be combined with supplementary partial-depletion tests, enabling further streamlining opportunities relative to the SCT when applied to more complex or comprehensive testing scenarios. Copyright SAE International Provided by IHS under license with SAELicensee=NextEV USA, INC/5993526001, User=romano, paola Not for Resale, 01/17/2017 16:32:38 MST No reproduction or networking permitted without license from IHS --`,`,,`,`````,,,,`````,,,,`,,``-`-`,,`,,`,`,,`---SAE J1634 Revised OCT2012 Page 2 of 26 1. SCOPE .......................................................................................................................................................... 3 2. REFERENCES.............................................................................................................................................. 3 2.1 Applicable Documents .................................................................................................................................. 3 3. DEFINITIONS ............................................................................................................................................... 4 4. TEST CONDITIONS AND INSTRUMENTATION ......................................................................................... 8 4.1 Condition of Vehicle ...................................................................................................................................... 8 4.2 Condition of Battery ....................................................................................................................................... 9 4.3 Environmental Conditions ............................................................................................................................. 9 4.4 Dynamometer................................................................................................................................................ 9 4.5 Test Instrumentation ................................................................................................................................... 10 4.6 General Instrumentation ............................................................................................................................. 10 5. DATA TO BE RECORDED FOR ALL TESTS ............................................................................................ 10 6. DRIVE SCHEDULES .................................................................................................................................. 11 6.1 UDDS .......................................................................................................................................................... 12 6.2 HFEDS ........................................................................................................................................................ 12 6.3 US06 ........................................................................................................................................................... 12 6.4 SC03 ........................................................................................................................................................... 12 6.5 “Cold” UDDS ............................................................................................................................................... 12 6.6 Constant Speed Cycle (CSC) ..................................................................................................................... 12 6.7 Speed Tolerance ......................................................................................................................................... 12 6.8 Speed Tolerance Violations ........................................................................................................................ 12 6.9 Intra-test Pauses ......................................................................................................................................... 13 7. SINGLE CYCLE RANGE AND ENERGY CONSUMPTION TEST (SCT) .................................................. 13 7.1 Purpose of Test ........................................................................................................................................... 13 7.2 Test Procedure ............................................................................................................................................ 13 7.3 Range (R [cycle] ) ............................................................................................................................................. 16 7.4 AC Energy Consumption (ECac [cycle] ) ......................................................................................................... 16 8. MULTI-CYCLE RANGE AND ENERGY CONSUMPTION TEST (MCT) ................................................... 17 8.1 Purpose of Test ........................................................................................................................................... 17 8.2 Test Methodology ........................................................................................................................................ 17 8.3 Combo Range and Energy Consumption Test ........................................................................................... 18 8.4 Phase Scaling Factors ................................................................................................................................ 19 8.5 DC Discharge Energy Consumption ........................................................................................................... 20 8.6 Range (R [cycle] ) ............................................................................................................................................. 21 9. ADDITIONAL TEST CYCLES ..................................................................................................................... 21 9.1 General ....................................................................................................................................................... 21 10. NOTES ........................................................................................................................................................ 22 10.1 Marginal Indicia ........................................................................................................................................... 22 Copyright SAE International Provided by IHS under license with SAELicensee=NextEV USA, INC/5993526001, User=romano, paola Not for Resale, 01/17/2017 16:32:38 MST No reproduction or networking permitted without license from IHS --`,`,,`,`````,,,,`````,,,,`,,``-`-`,,`,,`,`,,`---SAE J1634 Revised OCT2012 Page 3 of 26 APPENDIX A ADDITIONAL MCT SEQUENCES .............................................................................................................. 23 APPENDIX B METHODS FOR ESTIMATING LENGTH OF CSC M( ) .......................................................................... 25 FIGURE 1 REPEATED CITY TEST ............................................................................................................................. 14 FIGURE 2 REPEATED HIGHWAY TEST .................................................................................................................... 14 FIGURE 3 COMBO MULTI-CYCLE RANGE TEST: SPEED VS. TIME PROFILE ...................................................... 17 FIGURE A1 COMBO MULTI-CYCLE RANGE TEST W/US06 ....................................................................................... 23 FIGURE A2 STAND-ALONE US06 TEST ...................................................................................................................... 23 FIGURE A3 STAND-ALONE SC03 TEST ...................................................................................................................... 23 FIGURE A4 COLD (-7C) (20F) COMBO MULTI-CYCLE RANGE TEST ....................................................................... 24 FIGURE A5 COLD (20F) UDDS TEST ........................................................................................................................... 24 TABLE 1 EQUATION SYMBOL EXPLANATIONS....................................................................................................... 5 TABLE 2 REQUIRED PARAMETERS TO BE RECORDED ...................................................................................... 11 1. SCOPE This SAE Recommended Practice establishes uniform procedures for testing battery electric vehicles (BEV’s) which are capable of being operated on public and private roads. The procedure applies only to vehicles using batteries as their sole source of power. It is the intent of this document to provide standard tests which will allow for the determination of energy consumption and range for light-duty vehicles (LDVs) based on the Federal Emission Test Procedure (FTP) using the Urban Dynamometer Driving Schedule (UDDS) and the Highway Fuel Economy Driving Schedule (HFEDS), and provide a flexible testing methodology that is capable of accommodating additional test cycles as needed. Realistic alternatives should be allowed for new technology. Evaluations are based on the total vehicle system's performance and not on subsystems apart from the vehicle. NOTE: The range and energy consumption values specified in this document are the raw, test-derived values. Additional corrections are typically applied to these quantities when used for regulatory purposes (Corporate Average Fuel Economy, vehicle labeling, etc.). 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. SAE J1263 Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques SAE J1711 Recommended Practice for Measuring the Exhaust Emissions and Fuel Economy of Hybrid-Electric Vehicles, Including Plug-in Hybrid Vehicles SAE J1715 Hybrid Electric Vehicle (HEV) and Electric Vehicle (EV) Terminology SAE J2263 Road Load Measurement Using Onboard Anemometry and Coastdown Techniques SAE J2264 Chassis Dynamometer Simulation of Road Load Using Coastdown Techniques Copyright SAE International Provided by IHS under license
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