What is the difference between power lithium-ion batteries and energy storage technology batteries?

1. The working voltage size is not the same

Lithium-ion battery manufacturing companies have found that in the battery field, when the working voltage rises, the relative output voltage will also rise, so that the power lithium-ion battery pack can consider some high-power equipment; the immediate danger of the series connection method is Increases the current flow of all battery packs, and the volume is compromised by it. E outputs the amount of current, so the immediate effect of the series is to make the Li-Ion battery pack. With the increase of the volume, the volume of the battery connected in this way tends to be larger, that is, the volume lithium-ion battery in plain words.

Power lithium-ion batteries are mainly used for energy storage technology, with large volume requirements, long service life requirements, and low lithium-ion battery life. The battery for pneumatic tools has a small volume and does not need to provide a high-power output, while the battery is mainly used to provide power and must have a high-power output.

batteries1

2. The products used are not the same

Some large and medium-sized machinery and equipment have to have a higher working voltage value, because low-output power batteries cannot work, so power lithium-ion batteries are selected. For example, people generally use electric vehicles, and generally have a working voltage value of 48V. Compared with some situations in our daily life, 48V is not very large. Therefore, it is necessary to use lithium-ion batteries for power to ensure the operation of electric vehicles. We usually go to some large shopping malls or shopping plazas, some sign lights and backup power supply, because the power consumption of this kind of machinery and equipment is not very large, so we generally use scattered lithium-ion batteries, which are different in the application of goods of.

batteries2

The lithium-ion batteries used in BYD’s electric trams and new energy vehicles are power lithium-ion batteries, which are divided into three types according to their characteristics: switching power supply types, electric energy types, and switching power supply and electric energy types. The main feature of power lithium-ion battery is that it is suitable for battery charging with polymer cells, generally reaching 10C, and the basic parameter is special purpose (W/kg). The key feature of the kinetic energy species is the high energy density (WH/kg). For example, the volume type is a marathon runner, who must have physical strength, that is, the volume is large, and generally does not need the charge and discharge characteristics of high current; the output power type is a weightlifter, fighting for outbreaks is also physical strength, otherwise the volume is small and runs very close.

3, the internal resistance is not the same

The internal resistance of the power lithium-ion battery is smaller than that of the lithium-ion battery with a large volume. Taking 18650 as an example, manufacturers with a good 3-time charge-discharge rate generally have PDC with an internal resistance of about 40, and manufacturers with a 5-times charge-discharge rate generally do not have a PDC internal resistance of about 20%.

batteries3


Post time: Mar-02-2022