What are the characteristics of the protection board?

September 15, 2022
Latest company news about What are the characteristics of the protection board?

Overcharge protection usually means that when the lithium battery is charged to a certain voltage, the protection board will protect it, so that it will not be charged. But in general, what kind of voltage will be protected? Different industries and different products have different overcharge protection voltages. As far as the lithium battery itself is concerned, 4.2-4.25V/string is very reasonable, and the battery pack can be turned up by the multiple of the series (4.28V, 4.30V, 4.35V are higher, and the lithium battery will be overcharged. Like, it’s like a person eating, every time you eat so that your stomach is supported, it will not be good for your health if it takes a long time).

The over-discharge protection voltage usually means that the lithium battery will be protected when it reaches a certain voltage during use, so that it can no longer work and needs to be recharged to work. But in general, what kind of voltage will be protected? Different industries and different products have different voltages for over-discharge protection. For example, the monitor battery in the medical equipment battery is different from the ECG battery, the B-ultrasound battery and the infusion pump battery are different, and the light curing machine battery and the laser blood washing treatment device battery are also different. There is a difference between the POS machine battery and the detector battery in the battery of the testing instrument, and the battery of the data collector and the battery of the injury control instrument are also different. Power tool batteries are a special kind of battery, because the current requirements for battery tools are relatively high when they are working. Small ones range from more than ten A to large ones ranging from 20 to 30 A. Normally they are 10C-30C batteries. , In the lithium battery industry, the professional name is high-rate battery, which is also the power battery we often say, even the same power tool battery. Different brands of batteries are also different, Makita BL1830 batteries, BL1430 batteries and Bosch batteries are also different. In the electric toy battery, the model airplane battery is different from the electric vehicle battery. UPS backup battery is a different kind of battery. But as far as the lithium battery itself is concerned, 2.75V-2.8V/string is more reasonable, and the multiple of the series can be turned up. (3.0/string protection, there is no impact on battery performance, but the capacity is not fully utilized, that is, we often say that it is not worthwhile; 2.5V/string protection, some over-discharge, have an impact on battery performance, just like It’s the same as human work, every time you work tirelessly before putting your chest on your back before you feed it, it takes a long time, and of course it’s not good for your health!)

Based on the above, when designing a lithium battery pack program, we must combine the characteristics and working conditions of the customer's product with the characteristics of our protection board, so as to design the most suitable lithium battery pack for the product!