5S Battery Protection Circuits

Hello; We would compile for you the uses of 5S BMS Battery protection circuits and all the information you should pay attention to when using them. We wish you pleasant reading.

 

 

What is Battery Management System or BMS?

 

Battery Management System – Battery Management System (BMS) is the battery's safety system and is responsible for keeping battery conditions (such as voltage, current & temperature) within safe limits.

 

The level of protection depends on both the requirements of the battery chemistry and the complexity of the BMS itself. Batteries with primitive chemistries such as lead acid and nickel cadmium are resistant to overcurrent and overvoltage situations due to their high internal resistance and high self-discharge levels. Most of the time there is no need for protection other than a fuse.

 

However, while closed-type Lead Acid (SLA) Batteries, Valve Regulated Lead Acid (VRLA) Batteries and Nickel Metal Hydride (Ni-MH) batteries provide higher efficiency, they are more vulnerable to overvoltage, undervoltage, overcurrent and extreme temperature conditions. It is therefore important to monitor these batteries for specified conditions during operation.

 

 

Battery Management System in Lithium Ion Batteries

 

Lithium-based batteries are much more sensitive to operating conditions than all other batteries. Although the other batteries described may be damaged, they can often overcome short-term disturbances and regulate themselves. On the other hand, lithium batteries are very intolerant in terms of voltage & temperature limits. For example, even if the maximum charging voltage of an SLA, VRLA, or Ni-MH cell is exceeded by 100 millivolts, the cell will self-discharge, release some heat, and possibly continue operating with a small loss of capacity. If the same amount of overcharging is attempted in a lithium cell, the cell will undergo a destructive reaction, heating up and eventually breaking down.

 

 

The Battery Management System is generally responsible for MAINTAINING the safe conditions of the battery. Since each battery type has different limits and tolerances, battery management systems must comply with the same limits and tolerances.

 

 

Battery Protectors

 

The simplest form of BMS, also known as a "Battery Saver", takes the battery's cell voltages and battery current and compares them to predefined limits. Any exceedance results in battery disconnection. This function is usually provided by simple analog comparator integrated circuits. Disconnection is It can be easily achieved using a MOSFET group.

 

Battery Protectors are used in widespread application areas, from small household appliances and hand tools to small vehicles such as electric bicycles and electric scooters. The main function of this type of Battery Savers is to provide the basic conditions for battery protection, but they cannot provide the most critical features listed below.

 

Balancing cells to the same charge level

Calculating the battery's state of charge (SOC) and state of health (SOH)

 

Presenting battery information through a communication interface

 

 

 

 

5S 15A BMS Lithium Battery Protection Circuit

 

 

 

 

 

 

Features

 

 

 

Continuous discharge current: 15A(max)

Instantaneous discharge current: 25A

Charging voltage: 21V

Charging current: 15A(max)

Overcharge detection: 4.28±0.05V

Protection delay: 0.5s

Overcharge release: 4.28±0.05V

Over discharge detection: 2.55±0.08V

Over-discharge detection delay: 0.1s

 

 

 

 

 

Wiring Diagram

 

 

 

 

 

 

You can click on the link to buy the product.

https://www.elektronikport.com/urun/5s-15a-bms-koruma-karti-lityum-batarya-18650-li-ion-lipo-protection-module

 

 

 

 

 

 

 

5S 25A BMS Lithium Battery Protection Circuit

 

 

 

 

 

 

Features

 

For POLYMER LiMnO protection parameter (3.6V/3.7V)

 

Protect single cell overcharge voltage: 4.23 - 4.28V

Single cell overcharge rotect recovery voltage: 4.08 - 4.18

Overcharge protection delay: 0.5 - 1.5S

Single cell overdischarge protection voltage: 2.72 - 2.88V

Single cell overdischarge rotect recovery voltage: 2.9 - 3.1V

Overcharge protection current: 60A

Over-discharge protection current: 60A

Over-discharge protection: 0.5 - 1.5S

Temperature preservation: yes

Cut protect: yes

100 - 600μS

 

Charging current: 25A

 

Discharge current: 25A

 

 

 

NOTE:  Charging voltage: 4.2S for 1S, 8.4V for 2S, 12.6V for 3S, 16.8V for 4S, 21V 5S for BMS board.

NOTE:   This product has the features and quality to be used as both 3S 25A, 4S 25A and 5S 25A with different connection types.

 

 

 

 

 

Wiring Diagram

 

 

 

 

 

 

 

 

You can click on the link to buy the product.

https://www.sanec.net/tr/arama?urunAra=5s+bms

11.06.2024