A Battery Management System (BMS) board, also known as a battery protection board, is essential for safeguarding rechargeable lithium batteries and ensuring their safe operation. Due to the nature of lithium batteries, they require protection against overcharge, over-discharge, overcurrent, short circuits, and ultra-high temperature conditions. This protection is provided by integrated circuits on the BMS board, which include a sampling resistor and a current fuse.
Key Features
Battery Configuration: Supports 4S configuration, combining four 18650 lithium batteries.
Output Voltage: Provides up to 15V DC output.
Current Capacity: Supports up to 15A continuous current.
Protection Functions:
Overcharge Protection: Prevents the batteries from being charged beyond safe limits.
Over-discharge Protection: Protects against excessively low battery levels.
Overcurrent Protection: Limits the current to prevent damage from excessive current draw.
Short Circuit Protection: Automatically disconnects in case of a short circuit.
High-Temperature Protection: Ensures safe operation by preventing charging and discharging at unsafe temperatures.
Components
Integrated Circuit Board: Manages the protection and balancing of the battery cells.
Sampling Resistor: Measures the current flow to help regulate charging and discharging.
Current Fuse: Provides an additional layer of protection by blowing out in case of extreme overcurrent situations.
Specifications
Battery Type: Designed for 4S configuration with 18650 lithium batteries.
Output Voltage: Up to 15V DC.
Current Capacity: Supports up to 15A continuous current, suitable for heavy-duty applications.
Applications
This BMS board is suitable for various heavy-duty applications requiring a stable and protected power supply:
Electric Vehicles: Small electric vehicles and mobility aids.
Power Tools: High-power drills, saws, and other power tools.
Industrial Equipment: Automation systems and machinery.
Renewable Energy: Solar and wind energy storage systems.
Backup Power: Uninterruptible power supplies (UPS) and other backup power systems.
Usage Notes
Correct Wiring: Ensure that the wiring is done according to the specified diagram to avoid short circuits and ensure proper functioning.
Heat Management: Monitor the temperature of the board during operation, as prolonged exposure to high temperatures can affect performance and safety.
Battery Matching: Ensure that all four batteries have similar capacities and charge levels to avoid imbalance and potential damage.
Safety Precautions: Handle the board with care to avoid damaging sensitive components.
Safety Considerations
Compatibility: This BMS board is designed specifically for 18650 lithium batteries. Do not use it with other types of batteries without verifying compatibility.
Avoid Prolonged Overcurrent: Although the board supports up to 15A, avoid operating at the maximum limit for extended periods to prevent overheating and damage.
Handling: Handle the board with care to avoid damage to the components, especially during installation.
This 4S 15V 15A BMS board ensures the safe and efficient operation of lithium battery packs, providing essential protection and management for high-demand applications.
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