At present, there are various kinds of energy storage batteries on the market, including 304Ah, 280Ah, 230Ah and 150Ah, among which 280Ah is the most widely used in various energy storage projects in the world. The most authoritative criteria for evaluating energy storage cells are safety and cycle life, rather than other factors such as capacity, energy density, and discharge ratio. The most authoritative and stringent standards for testing energy storage battery safety are as follows:
IEC 62619, released on February 13, 2017, is the international safety standard for energy storage batteries. IEC 62619 focuses on the safety requirements of energy storage batteries and battery systems. It not only carries out safety tests on external short-circuit, impact, drop, heat abuse, overcharge and forced discharge for cells and battery modules, but also evaluates the functions of the battery management system (BMS), such as over-charge voltage protection, over-charge current protection, over-heat protection and thermal runaway spread.
At present, there are common requirements for this standard in Europe, Australia and Japan. In Australia, for example, the Queensland government takes energy storage batteries through IEC62619 as one of the necessary conditions for its related new energy projects to obtain government subsidies.
Application scope of 280Ah cell:
1. Large-capacity industrial energy storage system
2. UPS, emergency power supply device, power reserve and devices for the same purpose
3, golf cart, forklift, unmanned truck, railway and sea transportation
UL1642 is a safety standard for lithium cells first published by Underwriters laboratories Inc in October 1985. It is the most widely certified authoritative standard in the world to evaluate the safety and reliability of lithium cells under various failures.
Main test items of UL1642 include room temperature short circuit test, 55° short circuit test, overcharge test, extrusion test, heavy impact test, mechanical impact test, vibration test, hot chamber test, temperature impact test, high altitude simulation test, ejection test, etc.
UL1973, released on February 15, 2013, is a global safety standard for energy storage battery systems, mainly covering all kinds of energy storage batteries used in photovoltaic, wind energy, backup power supply and communication base stations, including structural evaluation and test evaluation of energy storage systems.
The UL1973 standard covers batteries for the following applications:
● Energy storage: photovoltaic power station, wind power station, UPS, home energy storage, etc
● Auxiliary battery (excluding power battery)
UL1973 fixed energy storage battery conventional test project:
Overcharge,Short Circuit, Overdischarge Protection, Temperature and Operating Limits Check,Imbalanced Charging, Dielectric Voltage Withstand, Continuity, Failure of Cooling/Thermal Stability System, Working Voltage Measurements, Static Force, Impact, Drop Impact (rack mounted module), Wall Mount Fixture/Handle Test, Mold Stress, Single Cell Failure Design Tolerance.
The UL9540A standard is recognized as the most rigorous international standard certification test for energy storage batteries and systems to assess the fire characteristics of energy storage batteries and systems due to large-scale thermal runaway. It is the highest level of certification in the industry. The whole test process of UL 9540A mainly consists of three parts: temperature rise, collection and distribution point, charge-discharge equilibrium test, thermal runaway and thermal spread test.
Safety is the lifeblood of battery. Whether it can pass the test of these four standards is the most critical factor to evaluate the quality of battery. The 280Ah lithium iron phosphate cell launched by Muller New Energy has been certified by TUV and UL certification bodies. So far, it has been applied in all kinds of energy storage projects with zero accidents and zero hidden dangers. As a R&D driven high-tech clean energy enterprise, Muller New Energy will continue to output high-quality safety products to the industry and customers. By September 2022, the cumulative delivery of energy storage batteries exceeds 8Gwh and supporting Home energy storage system exceeds 300K sets.
Muller energy has delivered more than 100Mwh container storage systems in more than 20 overseas markets, and has accumulated rich experience in design, installation and application. battery module dedicated to HESS system, batch delivery of 48V 100Ah 5.12Kwh, 48V50Ah 2.56Kwh HESS module, Suitable for stationary and wall mounted residential energy storage systems. We are committed to providing partners with supporting services, saving partners' home energy storage system upgrade, reduce time and product production costs.