IEC 62660-1-2018 pdf download – Secondary lithium-ion cells for the propulsion of electric road vehicles – Part 1: Performance testing

07-21-2021 comment

IEC 62660-1-2018 pdf download.Secondary lithium-ion cells for the propulsion of electric road vehicles – Part 1: Performance testing.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TR 8713. Electrically propelled road vehicles — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 8713 and the following apply.
ISO and lEG maintain terminological databases for use in standardization at the following addresses:
• IEG Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 battery electric vehicle BEV electric vehicle with only a traction battery as power source for vehicle propulsion
3.2 hybrid electric vehicle HEV vehicle with both a rechargeable energy storage system and a fuelled power source for propulsion
3.3 rated capacity CR capacity value of a cell in ampere hours (Ah) determined under specified conditions and declared by the cell manufacturer
4 Test conditions
4.1 General
The details of the instrumentation used shall be provided in any report of results.
Test and measurement shall be conducted with caution to prevent a short circuit.
4.2 Measuring instruments
4.2.1 Range of measuring devices
The instruments used shall enable the values of voltage, current and temperature to be measured. The range of these instruments and measuring methods shall be chosen so as to ensure the accuracy specified for each test.
For analogue instruments, this implies that the readings shall be taken in the last third of the graduated scale.
Any other measuring instruments may be used provided they give an equivalent accuracy.
4.2.2 Voltage measurement
The resistance of the voltmeters used shall be at least 1 MQ/V.
4.2.3 Current measurement
The entire assembly of ammeter, shunt and leads shall be of an accuracy class of 0,5 or better.
4.2.4 Temperature measurements
The cell temperature shall be measured by use of a surface temperature measuring device capable of an equivalent scale definition and accuracy of calibration as specified in 4.2.1. The temperature shall be measured at a location which most closely reflects the cell temperature. The temperature may be measured at additional appropriate locations, if necessary.
The examples for temperature measurement are shown in Figure 1. The instructions for temperature measurement specified by the cell manufacturer shall be followed.
4.2.5 Other measurements
Other values may be measured by use of a measuring device, provided that it complies
with 4.3.
4.3 Tolerance
The overall accuracy of controlled or measured values, relative to the specified or actual values, shall be within the following tolerances:
a) ± 0,1 % for voltage:
b) ± 1 % for current:
C) ± 2 K for temperature:
d) ±0,1 %for time:
e) ± 0,1 % for mass;
I) ± 0,1 % for dimensions.
These tolerances comprise the combined accuracy of the measuring instruments, the measurement technique used, and all other sources of error in the test procedure.
4.4 Thermal stabilization
For the stablization of cell temperature, the cell shall be soaked to a specified ambient temperature for a minimum of 12 h. This period may be reduced if thermal stabilization is reached. Thermal stabilization is considered to be reached if after one interval of 1 h, the change of cell temperature is lower than 1 K.
5 Dimension measurement
The maximum dimension of the total width, thickness or diameter, and height of a cell shall be measured at room temperature up to three significant figures in accordance with the tolerances in 4.3.
Examples of maximum dimensions are shown in Figures 2a to 2f.IEC 62660-1 pdf free download.

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