3s Bms Wiring Diagram

By | May 12, 2023

3S BMS Wiring Diagram

A 3S battery management system (BMS) is a device that is used to monitor and protect a battery pack that consists of three cells. The BMS typically includes a number of features, such as: * Cell balancing: This ensures that each cell in the battery pack is at the same voltage. * Over-voltage protection: This prevents the battery pack from being charged to a voltage that is too high. * Under-voltage protection: This prevents the battery pack from being discharged to a voltage that is too low. * Short-circuit protection: This prevents the battery pack from being damaged if a short circuit occurs. * Thermal protection: This prevents the battery pack from overheating. The BMS typically communicates with the battery pack using a serial communication protocol, such as I2C or SPI. The BMS can also be used to monitor the battery pack's state of charge (SOC), state of health (SOH), and temperature. The following diagram shows a typical 3S BMS wiring diagram:

The BMS is connected to the battery pack through the following connections: *

VBAT

(battery voltage): This connection provides the BMS with a voltage reference. *

CELL1+

,

CELL1-

,

CELL2+

,

CELL2-

,

CELL3+

,

CELL3-

: These connections are used to connect the individual cells in the battery pack to the BMS. *

CHG

(charge input): This connection is used to connect the charger to the BMS. *

DCHG

(discharge output): This connection is used to connect the load to the BMS. *

GND

(ground): This connection provides a common ground for the BMS and the battery pack. The BMS also includes a number of other connections, such as: *

INT

(interrupt): This connection is used to signal the BMS that an error has occurred. *

RST

(reset): This connection can be used to reset the BMS. *

SDA

,

SCL

(I2C): These connections are used to communicate with the BMS using the I2C protocol. The BMS can be used to monitor and protect a 3S battery pack. It can also be used to charge and discharge the battery pack.

References

* [3S Battery Management System (BMS) - SparkFun Electronics](https://learn.sparkfun.com/tutorials/3s-battery-management-system-bms) * [3S Battery Management System (BMS) - Adafruit Learning System](https://learn.adafruit.com/3s-battery-management-system-bms)


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