UL1973 Stationary Energy Storage Battery Routine Test Project-HOPPT BATTERY

The second edition of UL1973 was released on February 7, 2018. It is a safety standard for energy storage battery systems in North America and a dual-country standard for the United States and Canada. The standard covers various battery systems used for stationary, vehicle auxiliary power supplies, LER, photovoltaics, wind energy, backup power supplies, and communication base stations. It includes structural and tests evaluation of energy storage systems, but it is only a safety standard. Does not include performance and reliability assessments.

The UL1973 standard covers batteries for the following applications:

• Energy storage: photovoltaic power stations, wind power stations, UPS, household energy storage, etc.

• Vehicle auxiliary battery (not including power drive battery)

• Batteries for light rail or fixed rail power storage system

Unrestricted chemical substance battery

• Contains various types of batteries, with unlimited chemical substances, including beta sodium batteries and fluid batteries

• Electrochemistry

• Hybrid battery and electrochemical capacitor system

Test project introduction

UL1973 Stationary Energy Storage Battery Routine Test Project

Overcharge

External short circuit Short Circuit

Over-discharge Protection

Temperature and Operating Limits Check

Imbalanced Charging

Dielectric Voltage Withstand

Continuity

Failure of Cooling/Thermal Stability System

Working Voltage Measurements

Locked-Rotor Test Locked-Rotor Test

Input test Input

Wire stress relief test Strain Relief/Push-Back Relief

Vibration

Mechanical shock

Crush

Static Force

Steel ball Impact

Drop Impact (rack-mounted module)

Wall Mount Fixture/Handle Test

Mold Stress Relief Mold Stress

Pressure Release

Start-to-Discharge verification Start-to-Discharge

Thermal Cycling

Resistance to Moisture

Salt Fog

External Fire Exposure External Fire Exposure

Single Cell Failure Design Tolerance

Information required for UL1973 project certification

1. Cell specifications (including rated voltage capacity, discharge current, discharge cut-off voltage, charging current, charging voltage, maximum charging current, maximum discharge current, maximum charging voltage, maximum operating temperature, overall product size, product weight, etc.)
2. Battery pack specifications (including rated voltage capacity, discharge current, discharge cut-off voltage, charging current, charging voltage, maximum charging current, maximum discharge current, maximum charging voltage, maximum operating temperature, overall product size, product weight, etc.)
3. Photos inside and outside the product
4. Circuit schematic diagram or system block diagram
5. List of essential parts/BOM form (please refer to Table 3 to provide)
6. Detailed circuit schematic diagram
7. Bitmap of circuit board components
8. Assembly drawing or exploded drawing of battery pack structure
9. System security analysis (such as FMEA, FTA, etc.)
10. Dimensions or technical specifications of critical components (heat sinks, Busbar, metal parts, transformers, main protection Fuse, etc.)
11. Coding of battery pack production date
12. Battery pack label
13. Battery pack instruction manual
14. Other documents required for certification