The temperature-controlled battery short-circuit testing machine is a testing equipment specially designed to evaluate the safety and performance of batteries under short-circuit conditions. The device evaluates the battery's thermal management capabilities and safety by simulating the battery's behavior in a short-circuit state, combined with a temperature control function.
The temperature-controlled battery short-circuit testing machine is designed based on the requirements of various battery short-circuit test standards. According to the standard requirements, the short-circuit device needs to meet the internal resistance range ⤠5mΩ, so as to obtain the maximum short-circuit current required by the test; in addition, the circuit design of the short-circuit device must also be It can withstand the impact of large currents, so we chose industrial-grade DC electromagnetic contactors, all-copper terminals and internal copper plate conductors. The wide and thick copper plates effectively improve the heat dissipation effect, make the high-current short-circuit device safer, and effectively reduce the loss of test equipment. , to ensure the accuracy of test data.
The short circuit testing machine adopts PLC automatic control to simulate external short circuit of the battery and meets standards such as UL1642, UN38.3, IEC62133, GB/T18287, and GB/T 31241-2014. Record battery Voltage, current and surface temperature changes. The short-circuit testing machine requires the entire circuit (including circuit breakers, wires and connecting devices) to have a resistance of 80±20mΩ, and each circuit can withstand a short-circuit current of up to 1000A peak. Short circuit stop mode can be selected: 1. Short circuit time; 2. Battery surface temperature.
GB 31241-2014 "Safety Requirements for Lithium-Ion Batteries and Battery Packs for Portable Electronic Products"
MT/T 1051-2007 "Lithium-ion Batteries for Mining Lamps"
SJ/T 11169-1998 (UL1642: 1995) "Safety Standard for Household and Commercial Batteries"
YD 1268-2003 "Safety requirements and test methods for lithium batteries and chargers for mobile communication handheld devices"
GB/T 19521.11-2005 "Safety Specifications for Inspection of Dangerous Characteristics of Dangerous Goods in Lithium Batteries"
GB/T 18287-2013 "General Specification for Lithium-Ion Batteries for Cellular Phones"
SJ/T 11170-1998 (UL2054: 1997) "Safety Standard for Household and Commercial Batteries"
UN 38.3 "Recommendation on the Transport of Dangerous Goods - Manual of Tests and Criteria" Part 3, Section 38.3
UL 1642 "Lithium Battery Standard" 2054 "Household and Commercial Battery Packs"
IEC62133-2012 "Battery and battery pack containing alkaline or non-acidic electrolyte - Safety requirements for sealed batteries and battery packs for portable equipment"
GB/T 8897.4-2008 (IEC 60086-4: 2007) "Safety Requirements for Primary Batteries Part 4 Lithium Batteries"
YDB 032-2009 "Backup lithium-ion battery pack for communications"
YD/T 2344.1â2011 "Lithium iron phosphate battery pack for communications Part 1: Integrated battery pack"
GB/T 21966-2008 (IEC 62281:2004) "Safety Requirements for Lithium Primary Cells and Storage Batteries in Transportation"
After the battery is fully charged according to the prescribed test method, place it in an environment of 55℃±5℃. After the battery temperature reaches 55℃±5℃, place it for another 30 minutes. Then connect the positive and negative terminals of the battery with wires, and ensure that the total external resistance is 80mΩ±20mΩ. The battery temperature changes were monitored during the test, and the test was terminated when one of the following two situations occurred.
1) The battery temperature drops to 20% lower than the peak;
2) The short-circuit time reaches 24h;
3) Test results: The battery should not fire or explode, and the maximum temperature should not exceed 150℃.