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Battery IECEN 62133

The IECEN 62133 standard is mainly aimed at the safety requirements of single batteries and batteries containing alkaline or non-acid electrolytes and portable sealed single batteries and batteries (including lithium batteries, Ni-MH batteries, Ni-CD batteries, etc.). It mainly includes the testing and verification of the following items:

Battery (cell): continuous low-speed charging, vibration, temperature cycle, external short circuit, free fall, shock (collision), thermal misuse (thermal shock), extrusion, low air pressure, overcharging, forced discharge, high rate charging protection function (lithium system), marking and packaging, incorrect installation (nickel system).

Battery: vibration, shell stress at high temperature, temperature cycle, external short circuit, free drop, impact (collision), marking and packaging, overcharging (nickel system).

Most of these tests and verification items are common routine test items, but some items still deserve attention and attention:

A、13 KN extrusion. The test object of this project is the cell, although it is a common conventional project, but because of its clear requirements, the square cell needs to be squeezed long and short axial direction, that is, the length and width of the cell. According to the test experience, the polymer flexible packaging cell in the extrusion width axis (side), sometimes combustion or explosion and other unqualified phenomenon appears. Therefore, for the polymer flexible packaging cells, it is suggested to focus on this project.

B、Keep charging at a low rate. The test object of this project is the battery. The standard stipulates that the fully charged cell will be charged continuously for 28 days in accordance with the charging mode prescribed by the manufacturer. This project is not common in other safety standards. in view of the fact that the charging methods prescribed by battery manufacturers are basically constant current and constant voltage charging, this requires manufacturers to fully consider the requirements and restrictions on charging current and even the cut-off voltage at full charge. if necessary, the endurance of charging should be taken into account in the design of the battery.