1. Lithium Battery Testing Requirements

For the safe transportation of energy storage containers, the following lithium battery testing requirements are specified in the guidelines:

UN38.3 Testing

The battery packs in energy storage containers shall be subjected to the eight tests (T1-T8) under Section 38.3 of the United Nations "Manual of Tests and Criteria".

Thermal Runaway Propagation Prevention

Energy storage cases are required to employ thermal runaway propagation prevention technologies among batteries and carry an acceptable test report. Most prevention approaches include:

The use of thermal insulation materials such as ceramic fiber and silicone for curbing the transmission of heat.

Using temperature sensors for the dynamic regulation of battery pack temperature timely.

Salt Spray and Inspection Performance Tests

The battery packs shall undergo salt spray and insulation performance tests to the "Lithium-ion Batteries for Power Storage" (GB/T 36276) standard, with approved test reports, to ensure corrosion resistance and operating stability in seashore climates.

2. Battery Enclosure Requirements

As per Section 2.3 of the guidelines, the enclosures of battery packs in energy storage containers shall meet the following:

• Battery Pack Enclosure Protection Rating: IP66 or higher.
• Enclosure Protection Rating: IP55 or higher.
• Should have a known test report.

Protection rating is stated using the IP rating system, whereby the first number is protection against solid objects (0-6), and the second number shows protection level against liquids (0-9).

3. Container Body Requirements

Energy storage containers are classified as Class 9 dangerous articles (UN Number 3536) in accordance with the International Maritime Dangerous Goods (IMDG) Code and need to abide by the below sea shipping regulations:

Labeling and Marking

The container is to be labeled with Class 9 dangerous goods labels and United Nations number on all sides.

Container Body Inspection

The container body should meet container inspection standards and be equipped with a Certificate of Inspection issued by a ship inspection body approved by the national maritime authority. A safety approval plate as per the 1972 International Convention for Safe Containers (CSC Convention) must be displayed.

4. Packing Requirements

As a means of ensuring the safety and integrity of energy storage containers during transport, the packing process must meet the following specifications:

Battery Securing

The battery packs should be safely mounted inside the container with ample control and fire suppression systems. The rigid supporting frameworks or cabinets holding the battery packs must be able to sustain the load and inertial forces in transit without deforming or injuring safety aspects.

Battery State of Charge (SoC) Limitation

The first state of charge (SoC) of the energy storage container must be 30% or lower, and the batteries must be kept in low charge state for transportation purposes to avoid any fire or other issues.

Packing Process Inspection

Packing process has to be checked and a "Container Packing Certificate" issued and signed by the inspector of packing. Because of the unique character of energy storage containers, which both function as the components of transport and encasing of the product, it is impossible to supervise the packing procedure during containerizing.

Tags:

• Container Energy Storage System