Little knowledge about protection boards for energy storage batteries

The concept of power batteries was first proposed to distinguish them from consumer goods batteries, which include two main application areas: automotive and energy storage. However, in the decade after the concept of power batteries was proposed, the growth of automotive batteries far exceeded that of energy storage batteries. Power batteries are more commonly referred to as automotive batteries in people's minds. Today, let the lithium battery protection board manufacturer introduce you to some knowledge about energy storage battery protection boards.

From the characteristics of the battery itself, there are also significant differences between automotive batteries and energy storage batteries:

1. The pursuit of energy ratio is based on subsidy policies, and the pursuit of energy ratio for automotive batteries is almost abnormal. However, the pursuit of energy ratio for energy storage batteries is not high, and for energy storage batteries, the importance of volume energy ratio is higher than weight energy ratio, which is somewhat opposite to automotive batteries;

2. The requirement for lifespan is still based on pure electric vehicles. Currently, the requirement for cycle life of vehicle batteries has been greatly reduced. The result of a driving range of 500 kilometers is that 400 cycles can reach 200000 kilometers. Cycle life is not important anymore, but a daily lifespan of more than 10 years has become a challenge. Energy storage batteries have a relatively complex lifespan. UPS batteries do not require cycle life, but they require as high a calendar life as possible under float charging conditions. Peak shaving batteries have both cycle life requirements (currently proposed for over 10000 cycles) and calendar life requirements (adapted to the 20-year standard of the photovoltaic industry).

3. The requirements for safety performance, both pursue safety, but automotive batteries should actually default to safety issues, and the personnel and property losses after a safety accident are usually relatively small. But the safety requirements for energy storage batteries are abnormal, with zero self ignition rate! There is no other way, the losses and impacts of safety accidents in sensitive areas with high pedestrian traffic such as buildings and supermarkets are unacceptable. The accident compensation in the backup power field is calculated in seconds based on time, and the magnitude of loss compensation is also astonishing.

So no matter what type of battery, its protective board plays a great role. The above is the manufacturer's sharing of lithium battery protective boards with everyone.