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BMS With Protection Module

The minimum requirement for tow a BMS is that it has a cell-level voltage monitoring system and a mechanism for disconnecting the load.
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BMS With Protection Module

Introduction BMS With Protection Module:

The minimum requirement for tow a BMS is that it has a cell-level voltage monitoring system and a mechanism for disconnecting the load if the voltage is out of tolerance. At this low level of therm Performance, the BMS may be Referred to as a “protection Circuit module” (PCM), or just as a protected cell.

The primary function of the BMS is to protect the battery cells from damage caused by being overcharged or overcharged. Additionally, the BMS calculates the Remaining charge, monitors the battery's temperature, and monitors the Battery's health and safety Checking for loose connections and internal shorts.


  1. Charging current up to: 60А
  2. Discharge current up to: 80А
  3. Full charge voltage: 4.2V
  4. Full discharge voltage: 2.7V
  5. Input voltage, maximum (constant) DC: 21.5V
  6. Input voltage, minimum (constant) DC: 12.3V
BMS With Protection Module

Circuit Operation:

The protection circuits are contained in what Was commonly referred to as the Protection Circuit Module (PCM). While there are many off-the-shelf PCMs that you can buy, each individual application requires unique parameters to be maintained so it is not recommended that these off-the-shelf modules are used for anything other than lab prototypes.

The PCM was a part of the battery management system (BMS) which manages the electronics of and rechargeable battery pack by monitoring its state, reporting that data, balancing the cells protecting the battery, and controlling its environment.

bms with protection circuit operation

Battery protection circuits for the most demanding applications are operated mostly by Integrated Circuits (ICs) typically using MOSFETs to switch lithium cells in and out of the circuit. The over-current protection by normally provided when the IC detects the upper current limit of the battery being reached and then interrupts the circuit.

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How the BMS With Protection Module Work:

BMS may protect its battery by preventing it from operating outside its safe operating area, such as: Over-charging. Over-discharging. Over-current during charging. The primary function of the BMS is to protect the battery cells from damage caused by being overcharged or over-discharged. Additionally, the BMS calculates the remaining charge, monitors the battery's temperature, monitors the battery's health and safety by checking for loose connections and internal shorts.

A BMS monitors the individual cells within your battery pack and calculates how much current can enter safely (charge) and flow out (discharge) without damaging the battery. Doing so prevents the power source (battery charger) and load (from an inverter) from overcharging or overextending the battery.

Battery management system (BMS) is technology dedicated to the oversight of a battery pack, which is an assembly of battery cells, electrically organized in a row x column matrix configuration to enable delivery of targeted range of voltage and current for a duration of time against expected load scenarios.

Frequently Asked Questions

What are the protection necessary considered for BMS?

The most common type of BMS short circuit protection is thermal cutoff, which will activate when the battery temperature reaches a certain point. Other types of protection include fuse cutoff and electronic cutoff. Most lithium batteries have a short circuit protection setting of around 200-300mA.

How do you select the suitable BMS protection?

The BMS must be designed to handle the maximum voltage and current of your battery system. The maximum voltage is the highest voltage that the battery can output, and the maximum current is the highest current that the battery can provide. The BMS must be designed to handle both of these parameters

What is the difference between BMS and battery protection?

In summary, a protection board is a simple circuit that protects a single cell from overcharging, over-discharging, and short circuits, while a BMS is a more advanced system that manages and protects a battery pack as a whole, providing features such as cell balancing and sophisticated monitoring and control.

Does BMS limit charging current?

There are many types of BMS (and many definitions of "normal"), but generally, in case of too high a charging current, a BMS will not limit the current to an acceptable level but simply stop the charging, and yes, this does protect the battery, but there will be no charging Battery.

What systems are controlled by BMS?

A building management system (BMS) is a control system that can be used to monitor and manage the mechanical, electrical and electromechanical services in a facility. Such services can include power, heating, ventilation, air-conditioning, physical access control, pumping stations, elevators and lights.

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