Lithium battery protection board market prospects
During the use of lithium batteries, overcharging, over-discharging, and over-discharging will affect the service life and performance of the battery. In severe cases, it will cause the lithium battery to burn or explode. There have been cases of mobile phone lithium batteries exploding and causing casualties. IT often occurs and the recall of lithium battery products by mobile phone manufacturers.Therefore, each lithium battery must be equipped with a safety protection board, which consists of a dedicated IC and several external components. Through the protection loop, it can effectively monitor and prevent damage to the battery, prevent overcharge, over-discharge, and short circuit from causing combustion, explosion, etc.
The principle and function of lithium battery protection board
A short circuit in a lithium battery is very dangerous. The short circuit will cause the battery to generate a large current and a large amount of heat, which will seriously damage the service life of the battery. In more serious cases, the heat generated will cause the battery to burn and explode. The protective function of the lithium battery customized protection board is that when a large current is generated, the protection board will be closed instantly so that the battery will no longer be powered and no heat will be generated.
Lithium battery protection board functions: overcharge protection, discharge protection, over-current protection, short circuit protection. The protection board of the integrated solution also has disconnection protection. In addition, balancing, temperature control and soft switching functions can be optional.
Personalized customization of lithium battery protection board
- Battery type (Li-ion, LifePo4, LTO), determine the battery cell resistance, how many series and how many parallel connections?
- Determine whether the battery pack is charged through the same port or a separate port. The same port means the same wire for charging and discharging. The separate port means the charging and discharging wires are independent.
- Determine the current value required for the protection board: I=P/U, that is, current = power/voltage, continuous operating voltage, continuous charge and discharge current, and size.
- Balancing is to make the voltages of the batteries in each string of the battery pack not much different, and then discharge the battery through the balancing resistor to make the voltages of the batteries in each string tend to be consistent.
- Temperature control protection: protect the battery pack by testing the temperature of the battery.
Lithium battery protection board application fields
Application fields: medium and large current power batteries such as AGVs, industrial vehicles, forklifts, high-speed electric motorcycles, golf carts, low-speed four-wheelers, etc.
Post time: Oct-11-2023
