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Can a BMS charge and discharge at the same time?
You can’t charge and discharge at the same time, no matter what the circuit topology is. Either the voltage outside the pack/BMS is higher for any reason (pack charges) or the voltage is lower (pack discharges). You can use any BMS with a charger that can either supply current to a load and/or current to the pack.
Does a BMS prevent overcharging?
It interrupts the discharge of the cells before it becomes critical for the life of the battery. It interrupts the charging of the cells before they are overcharged… It optimizes a homogeneous loading from one cell to another. He’s checking cell temperatures.
Do I need a BMS for discharge?
Solution: You do not need a full-blown BMS. Your stated charge/discharge currents are way below 18650 ratings (so you can get away without thermal sensor) and parallel cells do not need balancing. Current limit should be set slightly above your max 300 mA load, not the battery rating as typical protection circuits do.
Does BMS limit discharge current?
While many BMS units simply provide an on/off switch to allow and prohibit discharge and charge currents, the Orion BMS carefully calculates the actual maximum amperage limits such that it prevents the application from drawing the battery voltage above or below the voltage limits.
How can I charge my battery without a BMS?
The best way to find a balance connector is to look for a balance wire extension cable and just cut off the male-pin connector. Notice that there is one more wire than the number of cells that the cable is intended for. This is a 4s balance wire extension cable, so it has 5 wires.
When does BMS need no charge current detection circuit?
A separate port BMS requires no charge current detection circuit. When the battery voltage is at the maximum level, there are also two situations: When discharging, Q1 and Q2 must be on Charging is not allowed, Q2 must be off
Is there a BMS that only contains battery protection?
A BMS that only contains battery protection is a so-called protection circuit module (PCM). In the future, I want to develop a battery charger that can charge an ebike battery in a short time with 1000W. This requires a special BMS, because normally, small charging currents are used with ebike batteries.
Can a BMS be used as a discharge port?
According to the circuit, you would suppose that you could always use a BMS with a separate port as a BMS with a common port. So you use the charge port as a discharge port. That’s not true. It depends on the BMS if it works safe.