Installing Battery Modules
Note the polarities when installing batteries. Do not short-circuit the positive and negative poles of a battery or battery string. Otherwise, the battery may be short-circuited.
Ensure that the site is equipped with qualified fire extinguishing facilities, such as firefighting sands and carbon dioxide fire extinguishers.
Wear insulation gloves and use insulated tools during installation to prevent electric shocks and short circuits.
At least three persons are required to move a battery module.
Tighten the screws on copper bars or cables to the torque specified in this document. Periodically confirm whether the screws are tightened, check for rust, corrosion, or other foreign objects, and clean them up if any. Loose screw connections will result in excessive voltage drops or and batteries may catch fire when the current is high.
- When moving batteries, do not remove protective components such as protective covers or waterproof caps from battery terminals.
- Do not hoist or move battery modules by using battery wiring terminals.
- Ensure that batteries are from the same manufacturer and of the same model. Batteries of the same batch are recommended.
- Install and secure batteries horizontally from the bottom up and from left to right to prevent falling over due to imbalance.
- When connecting batteries, ensure that the spring washer is crimped properly for the screw, that the protruding part of the terminal on the cable face outwards, and that the cable is intact.
- Place the batteries correctly to prevent vibrations and shocks.
- Before installing batteries, carefully read the electrical safety precautions.
- After tightening the screws, the operator needs to mark the screws. After completing the inspection, the inspector needs to mark the screws in a different color.
- If batteries will not be powered on after installation, take dustproof and anti-condensation measures (for example, use a dust cover, plastic film, or fabric cloth) to prevent condensation and dust buildup, which may corrode the batteries. Remove the protective objects when batteries need to be used.
- Clean the cabinet and ensure that there is no foreign matter, dust, or scraps in the cabinet.
- Pull out the BCU for about 10 cm.Figure 5-56 Pulling out the BCU
- Install battery modules.Figure 5-57 Installing battery modules
- Remove the front covers from the battery modules, and install battery baffle plates.
Place the front covers properly to prevent the light pipes from falling off.
Figure 5-58 Installing battery baffle plates (using the 8+8 scenario as an example) - Install battery communications cables.
Communications cables for lithium batteries 1, 8, 9, and 16 have been installed before delivery and are reserved near the lithium battery installation slots.
Figure 5-59 Installing battery communications cables - Install the filler panels.
In the 7+7, 8+0, and 7+0 scenarios, install filler panels in the vacant slots for battery modules.
Figure 5-60 Installing filler panels - Remove the fuse cover.Figure 5-61 Removing the fuse cover
- Install battery copper bars and power cables.
After removing the safety cap from the power cable of the battery at the bottom layer, install the cable immediately to prevent the exposed terminal from touching the shell, which may cause sparks or burns.
- When installing a copper bar, connect the part with a round hole to the upper battery module, and connect the part with a slotted hole to the lower battery module. Install the part with a round hole first, and then the part with a slotted hole.
- Excessive bolts will be used as spare parts.
- Open the terminal protective covers, install copper bars between battery modules, and close the covers. Install copper bars between other battery modules in sequence.Figure 5-62 Installing copper bars between battery modules (using the 8+8 scenario as an example)
- Open the terminal protective covers, install copper bars between battery modules and fuses, and close the terminal protective covers.Figure 5-63 Installing copper bars between battery modules and fuses (using the 8+8 scenario as an example)
- Open the terminal protective covers, install the negative battery cables reserved in the cabinet, and close the terminal protective covers.Figure 5-64 Installing negative battery cables (using the 8+8 scenario as an example)Figure 5-65 Installing negative battery cables (using the 7+7 scenario as an example)
- Reinstall the front covers and fuse cover for the battery modules.
Before reinstalling the covers, check and arrange all cables of the board (the cascading cable must be placed in the notch). Ensure that the covers do not press the cables.
- Reinstall the BCU.Figure 5-66 Installing the BCU
- Use a marker to mark the corresponding models on the nameplate of the cabinet based on the number of installed battery modules to facilitate future maintenance.Figure 5-67 Marking models (using 16 battery modules as an example)
