Abstract
In order to obtain the actual results of battery electric range test, and meet the demand of fiscal subsidy policy introduction of new energy vehicles, some modifications of the standard GB/T 18386.1 Test Method for Energy Consumption and Range of Electric Vehicles- part1: Light-duty Vehicles are revised by drafting group. Such as China Light-duty vehicle Test Cycle for passenger car (CLTC-P), Shortened time test method, etc. To prove the reasonability of Shortened time test to measure battery electric range (BER) based on CLTC-P, two sets of vehicle tests were carried out. Results show that shortened time test greatly reduce test time, and the weighting factor setting of DS1 and DS2 is reasonable. Although some deviation between Shortened time test and consecutive cycle test exist, but not regularly. It is related to the vehicle energy regulation strategy individually. Finally, it is recommended that the test vehicle should be forced to break 10 minutes after the end of CSSM.
Highlights
With the release of finance and taxation policies of new energy vehicles, relevant technical standards shoulder the responsibility of strictly controlling technical indicators
The Shortened time test was originally proposed by GTR15 and used to energy consumption test in accordance with the Worldwide Harmonized Light Vehicle Test Procedure (WLTP) [8]
This study only focuses on the battery electric range (BER) and does not discuss the electric consumption (EC)
Summary
With the release of finance and taxation policies of new energy vehicles, relevant technical standards shoulder the responsibility of strictly controlling technical indicators. After more than a year of research and discussion by the drafting group, the GB/T 18386.1 Test Method for Energy Consumption and Range of Electric Vehicles- part: Light-duty Vehicles were released in 2020. The Shortened time test was originally proposed by GTR15 and used to energy consumption test in accordance with the Worldwide Harmonized Light Vehicle Test Procedure (WLTP) [8]. It is improved in GB/T 18386.1-2020, such as changing the target speed curve from WLTC to CLTC, setting the number of test cycle, setting the speed value of constant segment, etc. Two methods of test and calculation are described in detail below
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