What is the battery discharge rate?
C: The ratio used to indicate the size of the battery charging and discharging current, also contionous discharge rate. charge rate = charge current/rated capacity discharge rate = discharge current/rated capacity For example: when a battery with a rated capacity of 100Ah is discharged at 20A, its discharge C rate is 0.2C; discharged at 50A, […]
Lifepo4 VS lead acid battery
Can LifePO4 replace lead acid battery? Lifepo4 is short of Lithium iron phosphate battery. It has big advantages vs lead acid battery. Four aspects to compare as below: 1 ,Lifetime–Lithium iron phosphate batteries (LiFePO4) operate 3 times longer than lead-acid. 2, Cycle- lithium batteries Lifepo4 can reach >4000 times or more. Lead-acid batteries can only […]
What is the relationship between battery capacity and current?
It is no directly related between the battery capacity and battery current of protection board. Capacity large, not battery large, battery is mainly to see the continuous current. That is to say, the larger of your motor, the protection board continuous current should be larger. Besides, protection board is also related to the current limit […]
Whether lithium battery protection board have an balancing function?
1, Necessary to have balancing function: When battery packs are in long time of storage after manufactured, due to the difference in the static power consumption of each circuit of the protection board and the difference in the self-discharge rate of each battery cell, the formation of the battery pack of each string of batteries […]
What is different between acitve balancing vs passive balancing in BMS/PCM?
In addition to ensure that the battery pack not overcharged and overdischarged, the battery management system BMS must have a good balancing function to keep the consistency of the battery pack. Almost all the BMS on the market now have balancing function, mainly divided into two kinds: active balancing function, and passive balancing function. Active […]
What is the voltage of battery PCM?
The main function of PCM, is to provide overcharge protection, over discharge protection, short circuit protection, over current protection, over temperature protection and equalization protection for lithium batteries. Lithium PCM usually includes control IC, MOS switch and auxiliary devices such as NTC and ID memory. Among them, the control IC, under all normal conditions, controls […]
How to connect a bms to battery cells?
1．Connect the B-wire (thick blue wire) to the main negative terminal of the battery； 2．Ensure that the row of wires is not plugged into the protection board before connecting them. 3．Start with the thin black wire to B-, connect the second wire (thin red wire) to the positive terminal of the first battery string, then […]
What is the difference between PCM between BMS?
The PCM (full form: Protection Circuit Module) or PCB(Full form: Protection Circuit Board) is the “heart” of the Li-ion battery pack. It will protect the Lithium battery from overcharging, overdischarging and short circuits etc., avoiding explosion, fire and damage to the battery pack. For low voltage packs (<20 cells), a balanced PCM should be selected […]
How to choose/ know my BMS Current?
To choose the right continuous current of bms battery, the first to figure out the single string undervoltage protection voltage, and the output power (motor). Depending on the material, the corresponding undervoltage protection values are as follows: Li-ion (3.7V), LifePo4 (3.2V) For example, 48V battery in Li-ion cell, 500W motor, calculate how much continuous current […]
How to Choose BMS Strings for Battery Pack?
To choose the right protection board, the first thing is to figure out the material type of the cell, the basic material classification can be divided into: Li-ion(3.7V), LifePo4(3.2V), LTO(2.4V), according to the voltage to the following, select the appropriate number of strings. Voltage Li-ion LifePo4 LTO 12V 3S 4S 5S 24V 7S 8S 10S […]