DALY NMC 7S 20A Waterproof Battery Management System-BMS Protection Board

The DALY NMC 7S 20A Waterproof Battery Management System (BMS) Protection Board is a key component used in lithium-ion battery packs, particularly for NMC (Nickel Manganese Cobalt) battery chemistries. It ensures the safety, stability, and longevity of the battery by providing essential protections and balancing features. Here’s an overview of its key features and description:

Key Features:

1. 7S Configuration:
   • This BMS is designed for a 7-cell series configuration (7S), meaning it manages a pack with 7 cells connected in series.
   • The typical voltage range for a 7S system is 21V to 29.4V (3.0V to 4.2V per cell), ideal for various applications like electric bikes, scooters, or renewable energy systems.
2. 20A Continuous Current:
   • It can handle a continuous discharge current of 20A, making it suitable for medium-power applications.
   • It provides overcurrent protection to prevent the battery from discharging too quickly and causing damage.
3. Waterproof Design:
   • This BMS is designed with IP65-rated waterproofing, making it resistant to dust and water splashes. This makes it suitable for outdoor or all-weather applications where environmental protection is essential.
4. Protection Functions:
   • Overcharge Protection: Prevents the battery pack from exceeding the safe voltage during charging.
   • Over-discharge Protection: Prevents the pack from discharging below a safe voltage, which can lead to cell damage or decreased capacity.
   • Overcurrent Protection: Limits the amount of current drawn to avoid damage to the battery and connected components.
   • Short-circuit Protection: Protects against short circuits which could cause excessive heat or even fire.
   • Over-temperature Protection: Monitors the temperature of the pack and cuts off charging or discharging if temperatures go too high, to prevent overheating and potential thermal runaway.
5. Balancing Function:
   • The balancing circuit ensures that all the cells in the battery pack maintain a consistent charge level. This extends the overall lifespan and performance of the pack by preventing individual cells from becoming overcharged or undercharged.
6. Battery Status Indicators:
   • Some versions of this BMS come with LED indicators to display the battery’s status, including charge level, errors, and any protection state triggers.
7. Compatibility:
   • Suitable for NMC lithium-ion batteries, which are commonly used in electric vehicles (EVs), energy storage systems, and other high-performance applications.
8. Size and Mounting:
   • It is designed to fit various battery pack sizes, and it typically comes with mounting holes for easy integration into battery enclosures.

Applications:

• Electric Bicycles (eBikes)
• Electric Scooters
• Solar Energy Storage Systems
• Electric Vehicles (EVs)
• Portable Power Systems

This BMS provides critical functions to ensure safe operation, prevent damage to the cells, and extend the lifespan of the battery pack, making it ideal for high-demand and outdoor applications.