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Explain the difference between power lithium-ion batteries, capacity lithium-ion batteries and consumer lithium-ion batteries

There are many types of lithium-ion batteries, such as power-type lithium-ion batteries, capacity-type lithium-ion batteries, and consumer lithium-ion batteries. Power-type lithium-ion batteries and capacity-type batteries are different in terms of materials and processing techniques. The difference in discharge characteristics means that the scope of use of the two is very different. When purchasing a lithium-ion battery pack, it is necessary to distinguish between the two to prevent a bad impact on the load.

리튬 이온 배터리 팩

1、The difference between power lithium-ion batteries and capacity lithium-ion batteries

The power lithium-ion battery pack refers to the power source that supplies the power source for the tool. At present, it mostly refers to the lithium-ion battery pack that supplies power for electric vehicles and electric trains. Power-energy lithium-ion battery packs emerged with the advent of plug-in hybrids. It requires high energy storage in the battery, which can support pure electric driving for a certain distance, and also has good power characteristics and enters the hybrid mode when the battery is low.

(1) Different voltages

In the battery industry, as the voltage increases, the corresponding output voltage will also increase, so that the power-type lithium-ion battery pack can meet some high-power equipment; and the result of the direct influence of the parallel method is to make the entire battery pack. The current increases, and the capacity is affected by the current at the output end, so the straight use of parallel connection is to increase the capacity of the lithium-ion battery pack. The capacity of the battery pack connected in this way is often larger, which is the so-called capacity. Type lithium-ion battery pack.

(2) Different products used

The voltage value required on some large-scale equipment is higher, because the low-power battery pack cannot run, so the power-type lithium-ion battery pack must be selected. For example, for the electric bicycles we usually use, the voltage value it requires is often 48V. Compared with some situations in our life, 48V is not small. Therefore, it is necessary to use a power-type lithium-ion battery pack to ensure the operation of the electric bicycle.

The capacity-type lithium-ion battery is like mountaineering and running, which requires high capacity to maintain low-power discharge for a long time. Commonly used with small current discharge, but there are products with large capacity requirements, such as mobile power supplies, outdoor flashlights, etc.

(3) Different internal resistance

The internal resistance of power-type lithium-ion batteries is smaller than that of capacity-type lithium-ion batteries. Taking 18650 as an example, good manufacturers with 3-rate discharge generally carry PDC, and the internal resistance is about 40; 5-rate discharge generally does not carry PDC internal resistance. Resistance about 20.



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