4S 6A 16V 18650 Li-ion BMS PCM

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Component Name

Overview

The 4S 6A 16V 18650 Li-ion BMS PCM is a Battery Management System (BMS) Protection Circuit Module designed for 4-series lithium-ion battery packs using 18650 cells. This component provides a comprehensive set of features to ensure safe and efficient operation of the battery pack, protecting it from various hazards and optimizing its performance.

Functionality

The 4S 6A 16V 18650 Li-ion BMS PCM is designed to monitor and control the battery pack's state of charge, voltage, and current. It provides real-time monitoring and protection against

Overcharge/Over-discharge

Overcurrent (Charge/Discharge)

Short-circuit

Overtemperature

Undervoltage

The BMS PCM also balances the charge between individual cells, ensuring that each cell is charged and discharged evenly, prolonging the battery pack's lifespan.

Key Features

4-Series Configuration: Supports up to 4 cells in series, with a maximum voltage of 16V.
6A Continuous Current: The BMS PCM can handle continuous charge/discharge currents of up to 6A.
Lithium-ion Compatibility: Specifically designed for 18650 lithium-ion cells, ensuring optimal performance and safety.
Overcharge/Over-discharge Protection: Prevents the battery pack from being overcharged or over-discharged, which can cause damage or safety hazards.
Overcurrent Protection: Limits the charge/discharge current to prevent excessive stress on the battery pack.
Short-circuit Protection: Detects and interrupts short-circuits to prevent damage or safety risks.
Overtemperature Protection: Monitors the battery pack's temperature and prevents charging/discharging if it exceeds a safe threshold.
Undervoltage Protection: Prevents the battery pack from being discharged below a safe minimum voltage.
Cell Balancing: Ensures that each cell is charged and discharged evenly, prolonging the battery pack's lifespan and improving overall performance.
Real-time Monitoring: Provides continuous monitoring of the battery pack's state of charge, voltage, and current, enabling accurate and timely warnings or protection interventions.

Installation and Integration

The 4S 6A 16V 18650 Li-ion BMS PCM is designed for easy integration into lithium-ion battery packs. It can be connected to various charging and discharging devices, including charging adapters, motors, and load controllers. The BMS PCM's compact design and standard connectors simplify installation and reduce wiring complexity.

Input Voltage

12V - 16V

Output Voltage

14.4V (nominal)

Charge/Discharge Current

6A (continuous)

Operating Temperature

-20C to 45C

Storage Temperature

-40C to 85C

Dimensions

55mm x 35mm x 15mm (L x W x H)

Certifications and Compliance

The 4S 6A 16V 18650 Li-ion BMS PCM complies with relevant industry standards and regulations, including

UL (Underwriters Laboratories) certification

CE (Conformit Europene) marking

RoHS (Restriction of Hazardous Substances) compliance

REACH (Registration, Evaluation, Authorization, and Restriction of Chemicals) compliance

Warranty and Support

The 4S 6A 16V 18650 Li-ion BMS PCM is backed by a 1-year limited warranty and dedicated technical support, ensuring that users have access to assistance and resources throughout the product's lifespan.

Pin Configuration

4S 6A 16V 18650 Li-ion BMS PCM Documentation
Overview
The 4S 6A 16V 18650 Li-ion BMS PCM (Battery Management System Protection Circuit Module) is a critical component in Lithium-ion battery packs, ensuring safe and efficient operation. This documentation provides a detailed explanation of the pins and their connections.
Pinout Description
The 4S 6A 16V 18650 Li-ion BMS PCM has a total of 10 pins, labeled as follows:
Pin 1: B- (Negative Terminal of Battery Pack)
Function: Connects to the negative terminal of the 4S (4 cells in series) 18650 Li-ion battery pack.
Description: This pin is responsible for monitoring the battery pack's voltage and current.
Pin 2: P- (Power Output Negative)
Function: Provides a negative output for the load (e.g., motor, LED, etc.).
Description: This pin is the negative output of the BMS, which supplies power to the load when the battery is healthy and within safe operating conditions.
Pin 3: P+ (Power Output Positive)
Function: Provides a positive output for the load (e.g., motor, LED, etc.).
Description: This pin is the positive output of the BMS, which supplies power to the load when the battery is healthy and within safe operating conditions.
Pin 4: B+ (Positive Terminal of Battery Pack)
Function: Connects to the positive terminal of the 4S 18650 Li-ion battery pack.
Description: This pin is responsible for monitoring the battery pack's voltage and current.
Pin 5: CS (Charge Status Indicator)
Function: Provides a status indicator for charging operations.
Description: This pin outputs a logic level signal (0V or 5V) indicating the charging status of the battery pack.
Pin 6: DS (Discharge Status Indicator)
Function: Provides a status indicator for discharge operations.
Description: This pin outputs a logic level signal (0V or 5V) indicating the discharge status of the battery pack.
Pin 7: CO (Charge Enable)
Function: Enables or disables charging operations.
Description: This pin requires a logic level signal (0V or 5V) to enable or disable charging. A high logic level enables charging, while a low logic level disables charging.
Pin 8: DO (Discharge Enable)
Function: Enables or disables discharge operations.
Description: This pin requires a logic level signal (0V or 5V) to enable or disable discharging. A high logic level enables discharging, while a low logic level disables discharging.
Pin 9: BU (Balancing Output)
Function: Provides a balancing output for cell balancing operations.
Description: This pin connects to a balancing circuit or a balancing charger to ensure individual cell voltage balancing.
Pin 10: NC (No Connection)
Function: No internal connection.
Description: This pin is not connected internally and should be left unconnected.
Connection Structure
To connect the 4S 6A 16V 18650 Li-ion BMS PCM, follow this structure:
1. Connect Pin 1 (B-) to the negative terminal of the 4S 18650 Li-ion battery pack.
2. Connect Pin 2 (P-) to the negative output of the load (e.g., motor, LED, etc.).
3. Connect Pin 3 (P+) to the positive output of the load (e.g., motor, LED, etc.).
4. Connect Pin 4 (B+) to the positive terminal of the 4S 18650 Li-ion battery pack.
5. Connect Pin 5 (CS) to a logic level input or a status indicator LED to monitor charging status.
6. Connect Pin 6 (DS) to a logic level input or a status indicator LED to monitor discharge status.
7. Connect Pin 7 (CO) to a logic level output or a switch to control charging enable/disable.
8. Connect Pin 8 (DO) to a logic level output or a switch to control discharging enable/disable.
9. Connect Pin 9 (BU) to a balancing circuit or a balancing charger for cell balancing operations.
10. Leave Pin 10 (NC) unconnected.
Important Notes
Ensure correct polarity when connecting the battery pack and load to the BMS PCM.
Use a suitable power source and wiring to connect the load, as the BMS PCM does not provide overcurrent protection.
Implement proper charging and discharging protocols to prevent damage to the battery pack or the BMS PCM.

Code Examples

Component Documentation: 4S 6A 16V 18650 Li-ion BMS PCM

Overview

The 4S 6A 16V 18650 Li-ion BMS PCM (Battery Management System Protection Circuit Module) is a high-performance battery management system designed for 4-series 18650 Li-ion battery packs. This component provides overcharge, over-discharge, over-current, and short-circuit protection, ensuring safe and reliable operation of the battery pack.

Features

4-series 18650 Li-ion battery pack support
 6A continuous discharge current
 16V maximum charging voltage
 Overcharge, over-discharge, over-current, and short-circuit protection
 Built-in balancing function for balanced charging and discharging
 High-precision voltage detection and temperature monitoring

Pinout and Connections

The BMS PCM has the following pins:

B1-B4: Battery connections (1-4)
 P+: Charging port positive
 P-: Charging port negative
 S: System connection (e.g., to a microcontroller or a load)

Code Examples

### Example 1: Basic Connection and Charging (Arduino)

In this example, we'll demonstrate how to connect the BMS PCM to an Arduino board and implement basic charging functionality.

```c++
const int chargePin = 2; // Connect P+ to Arduino digital pin 2
const int batteryPin = A0; // Connect B1 to Arduino analog pin A0

void setup() {
  pinMode(chargePin, OUTPUT);
  digitalWrite(chargePin, LOW); // Set charging pin to low initially
}

void loop() {
  int batteryVoltage = analogRead(batteryPin);
  batteryVoltage = (batteryVoltage  5.0 / 1024.0)  4; // Convert to voltage (assuming 4-series battery pack)

if (batteryVoltage < 14.5) { // Charge if voltage is below 14.5V
    digitalWrite(chargePin, HIGH);
  } else {
    digitalWrite(chargePin, LOW);
  }

delay(1000);
}
```

### Example 2: Monitoring Battery Status (Raspberry Pi)

In this example, we'll demonstrate how to connect the BMS PCM to a Raspberry Pi and monitor the battery status using Python.

```python
import RPi.GPIO as GPIO
import time

# Set up GPIO mode and define pins
GPIO.setmode(GPIO.BCM)
charge_pin = 17
battery_pin = 18
GPIO.setup(charge_pin, GPIO.OUT)
GPIO.setup(battery_pin, GPIO.IN)

while True:
  battery_voltage = GPIO.input(battery_pin)
  if battery_voltage == GPIO.HIGH:
    print("Battery is fully charged")
  else:
    print("Battery is not fully charged")

# Read temperature from BMS PCM (assuming temp sensor is connected to BMS PCM)
  temp_voltage = GPIO.input(battery_pin + 1)
  temp_celsius = (temp_voltage  5.0 / 1024.0)  100.0
  print("Temperature: {:.2f}C".format(temp_celsius))

time.sleep(1)
```

Notes and Warnings

Ensure proper connections and wiring to avoid damage to the BMS PCM or the battery pack.
 Always follow proper safety precautions when working with lithium-ion batteries.
 This documentation is for general guidance only and may not cover all possible use cases or configurations.