Testing projects related to the GB31241 portable lithium battery

Testing projects related to the GB31241 portable lithium battery

Series of lithium battery testing products GB31241

Portable electronic products safety requirements for lithium-ion batteries and accumulators

The GB31241 standard can apply to lithium-ion batteries and battery packs for portable electronic technology products, nmp recovery system mainly targeting mobile electronic information products not exceeding 18 kg that are intended to be used by students and often carried by managers. Here are some research examples:

Portable office products, such as laptops, PDAs, etc. :

Mobile communication products, such as mobile phones, cordless phones, Bluetooth headsets, and walkie-talkies.

Portable audio and video products: portable TVs, DVD players, MP3/MP4 players, cameras, camcorders, and recorders.

Among the other portable products are electronic navigation devices, digital photo frames, game consoles, and e-books.

The portable electronic technology product development listed above does not include all the products of the company; therefore, n methyl 2 pyrrolidone solvent products not listed are not necessarily outside the scope of this standard.

Lithium battery sample quantity requirements for GB31241

There are 27 main battery test samples and 14 battery test samples;

33 samples of battery packs, 17 samples:

A minimum of five electronic products powered by batteries or battery packs that do not have protective circuits in themselves but have protective circuits in their chargers or in electronic products powered by them should also be sent.

GB31241 detection technology for potassium batteries

Battery safety tests: room temperature external short circuit, nmp chemical high temperature external short circuit, overcharge, forced discharge;

Battery environmental safety tests: low voltage, temperature cycle, vibration, accelerated impact, drop, extrusion, heavy impact, heat abuse, combustion injection;

Battery pack environmental safety test: low pressure, temperature cycle, vibration, accelerated impact, drop, stress release, high temperature use, washing, and flame retardant requirements;

Tests for electrical safety of battery packs: overvoltage charging, overcurrent charging, undervoltage discharge, overload, external short circuit, reverse charging, electrostatic discharge;

Battery protection circuit system safety management requirements: overvoltage charging environmental protection, overcurrent charging protection, undervoltage discharge protection, overload protection, short circuit protection, and high voltage resistance;

Charge voltage control, charge current control, discharge voltage control, discharge current control, and charge and discharge temperature control are all safety requirements for system protection circuits.

Common test items for lithium batteries

IEC62133-2, the globally recognized standard for evaluating the safety and reliability of lithium batteries and batteries in case of failures, was introduced by the European Union. It is considered the most authoritative and widely certified standard in the world. The tests cover a range of possible scenarios such as room temperature short circuit, housing stress, 55 degree short circuit, free fall, heat abuse, squeeze, overcharge, forced discharge, mechanical shock, vibration and forced internal short circuit.

High-risk items of 2IEC62133-2: heat abuse test, extrusion test, 55 degree short circuit test, forced internal short circuit test, etc.

Non-rechargeable lithium batteries and batteries are covered by IEC60086-4, the safety standard of the European Union. The main test items include altitude simulation test, temperature cycle test, vibration test, mechanical impact test, external short circuit test, weight impact test, extrusion test, forced discharge test, abnormal charge test, free drop test, heat abuse test, incorrect installation test, overdischarge test, etc.

In October 1985, the United States introduced UL 1642 as the first edition of their safety standards for lithium cell regulation. This certification is widely recognized worldwide as the leading authority on evaluating the safety and reliability of lithium cells in various system failures. The primary focus of UL 1642 is on the cell itself, and its testing includes room temperature short circuit, 55 degree short circuit, overcharge, extrusion, heavy impact performance, mechanical design impact, vibration analysis, hot box, temperature continuous impact, high altitude simulation software, and ejection tests.

The 5UL2054 is suitable for use with both primary (non-rechargeable) and secondary (rechargeable) lithium-ion batteries, including Gaffani batteries or two or more parallel or tandem lithium-ion batteries. These batteries convert chemical energy into electricity through a chemical reaction. The Ul2054 test items cover a range of tests such as electrical tests (including short circuit, overcharge, and limited power supply), mechanical tests (such as squeeze, impact, acceleration, vibration), battery shell tests, drop tests, 250N static tests, die pressure release tests, fire tests, projectile tests, environmental tests, high temperature tests, and temperature cycle tests.

There are six high-risk items of UL2056: overcharge test, power limit test, temperature rise test, capacity verification test, temperature rise test, abnormal overcharge test, etc.

Lithium battery charging, abnormal operation, lithium battery short circuit, lithium battery vibration test, shell pressure test, mechanical strength test, creepage distance, electrical gap, insulation distance, heat and fire resistance, hot wire test, ball pressure test, etc.