What are the main parameters of lithium battery pack customization?

1.Confirm the lithium battery application field

Different products and application scenarios have different requirements for battery pack ,and the battery packs used in different products will definitely require different cells.

1)Different discharge rate cells. For example, 0.2C discharge cell, 0.5C discharge cell, 1C discharge cell,2C discharge cell,3C discharge cell, 8C discharge cell, or higher.Normally, High speed electric vehicle has high requirements on the large current discharge cell, and for ESS battery, the 0.2C discharge cell is available.

2)Different material system. Select NCM cell or LFP cell for your project.NCM cell has higher energy density, while LFP cell has higher cycle life.Take 48V 10Ah Ebike lithium battery for example, consider the dimension restrictions, we usually select NCM cell.

3)Different cell types. Select cylindrical cell or polymer pouch cell or prismatic cell for your project. For small project, for example, the 36V 15Ah Ebike lithium battery and 72V 45Ah Scooter lithium battery, we usually use cylindrical cell or polymer pouch cell, which will be more flexible for design and manufacturer. But for large project, such as 72V 200Ah Golf Cart lithium battery pack or 48V 300Ah AGV lithium battery pack, we will consider prismatic cell, which is more stable.

2. Confirm the lithium battery voltage and capacity

Specific lithium battery specifications and styles are conducive to lithium battery manufacturers in product development and design process under smaller category circumstances.

The battery voltage is mainly decided by the equipment motor power. In the same voltage platform, the higher capacity, the larger energy, the longer usage time. Take Scooter battery for example, when the E-scooter motor power is certain, the 72V 60Ah lithium battery is two times driving range than 72V 30Ah lithium battery.

3. Check the battery pack dimension

The size of the lithium battery will greatly influence how much energy storage can the lithium battery pack do. The larger space, the more energy can fill in. For example, a customer wants a 48V 50Ah battery pack for AGV and give us a space dimension. Our engineers should calculate whether the space size enough for the energy or not, then can step to the following process.

If you don’t know the battery size, you can use a tape measure to measure the space length, width, and height in your vehicle. If the shape is special and abnormal,please send us a picture or 3D drawing for reference. That would prevent a very large gap between reality and ideal and ensures the produced battery fit in the electric vehicle well.

4. Check the input and output ports of the battery pack

When the lithium battery pack is used in EV, AGV, etc, some of the battery output ports are the same, some of the battery output ports are irregular, and some of the battery output ports are two wires. In the customized battery market, there are various output modes, so the customized lithium battery must confirm the output mode with the manufacturer.

5. Confirm the rated power and peak power of the motor

The constant discharge current and peak discharge current can be calculated by the rated power and peak power of the motor. That will influence our selection of discharge rate cells, BMS and wires.

6. Confirm the battery pack working environment temperature

For most battery packs, the charge temperature range is 0-45℃, the discharge temperature range is -20-55℃.

For example, if the snowmobile lithium battery pack is used in an extremely low temperature, we should consider adding a heating system, to ensure its normal usage.

7. Confirm the charging time

Chargers with different voltages and currents vary greatly.If the voltage of the battery charger is too low, it may not be able to charge, if the electric vehicle charger voltage is too high there will be a greater security risk.

There are two charging models: fast charge and normal charge. 

After confirming the charging time required, the battery pack manufacturer can provide a set of corresponding charger.

8. Confirm the communication protocol

There are several communication protocols in the market: CAN, RS485, RS232, etc. Confirm the communication protocol for your equipment.

9. Other information Details

Tell us your other battery pack requirements, such as pack case material, battery component, color, discharge current, etc. We will satisfy your requirements if achievable.