Enerkey's newly launched heavy-duty vehicle intelligent equalization protection board is a battery management system (BMS) designed specifically for lithium battery packs. It features overcharge protection, over-discharge protection, short circuit protection, and equalization charging functions, which can effectively extend battery life and improve safety.

supports 16-24S ternary lithium/lithium iron/lithium titanate batteries, with a current up to 300A. Battery balancing is adjustable from 1A to 8A. It connects to an app via Bluetooth or to a PC via CAN or RS485 communication, offering high efficiency, speed, and significantly improved battery life. It's easy to use.

The heavy-duty vehicle intelligent balancing board is mainly used in industrial logistics and special vehicle fields to improve the performance of the battery management system (BMS) and ensure the balance and safety of multi-cell battery packs during charging and discharging. Here are the key details:

Product Features:

1. Intelligent Balancing Technology: Employs an active balancing scheme, dynamically adjusting the voltage of individual battery cells to extend battery life.

2. High Reliability Design: Some products integrate temperature control modules and overcharge/over-discharge/overcurrent/short circuit protection to adapt to complex working conditions. For example, the hydraulic braking differential drive system of Hangcha AGV works in conjunction with the balancing board to ensure safety during heavy-duty operations.

3. High current support: Supports 15A-300A current, adapting to the high power requirements of heavy-duty vehicles., with voltage ranges from 12V to 72V. Supports unordered power-on.

4. High-Quality Components: The lithium battery protection section uses automotive-grade MOSFETs, 2oz thickened copper foil, and copper strip current sharing, resulting in high precision, ultra-low internal resistance, and ultra-low heat generation.

5. Intelligent Battery Monitoring: Features Bluetooth communication and a companion mobile app. View data such as individual cell voltage, maximum individual cell voltage, minimum individual cell voltage, average individual cell voltage, maximum voltage difference, total battery pack voltage, real-time balancing current, running time, balancing status, and device temperature. Device balancing parameters can be modified online. It can also connect to PC software via CAN or RS485 communication. Supports remote parameter modification, fault alarms, and data logging.

The equalization protection board typically integrates the following protection functions:

Overcharge protection: Automatically cuts off the charging circuit when the battery voltage exceeds a set threshold (e.g., 4.25V ± 25mV/cell).

Over-discharge protection: Automatically cuts off the discharging circuit when the battery voltage falls below a set threshold (e.g., 2.5V-3.0V ± 50mV/cell).

Overcurrent protection: Divided into continuous overcurrent protection (e.g., 10A-100A selectable) and instantaneous overcurrent protection (e.g., 200A-500A/within 10ms), preventing battery damage due to high current.

Overtemperature protection: Activates protection measures when the battery temperature exceeds a set value (e.g., 60℃-120℃ adjustable).

Short circuit protection: Supports 0.1ms fast response to prevent safety hazards caused by short circuits.

Reverse connection protection: Prevents damage caused by reverse connection of the battery's positive and negative terminals through a reverse connection protection circuit design.

Application scenarios and industry standards

1. Industrial Logistics: For example, Hangcha AGVs optimize heavy-duty handling efficiency through a balancing plate, meeting the needs of 12-hour continuous operation.

2. Special Vehicles: Backup power supplies for RVs, power tools, and other equipment utilize balancing plates to ensure stable operation of multi-cell battery packs.

3. Electric Vehicles: Battery packs typically consist of hundreds of cells connected in series. A balancing protection board ensures consistent performance across all cells, improving range and safety.

4. Energy Storage Systems: In scenarios such as photovoltaic energy storage and home energy storage, balancing protection boards extend battery pack life and reduce maintenance costs.

5. Portable Devices: For devices like drones and power tools, balancing protection boards prevent performance degradation caused by overcharging/over-discharging.

Regarding industry standards, the equalization protection board must meet the following specifications:

Voltage accuracy: Overcharge/over-discharge protection voltage must be controlled within ±25mV to ensure accurate protection threshold.

Temperature adaptability: Must be adaptable to a storage temperature range of -50℃ to +125℃, and an over-temperature recovery temperature of 50℃-100℃ (adjustable).

Humidity adaptability: Must operate normally in an environment with 5%-95%RH (non-condensing).

Instructions for use

Step 1: Connect the wires according to the wiring diagram below.

Step 2: Connect the app. 

For IOS phone, You can directly search "Enerkey" in appstore or in Wechat Applet.
For Android phone, Please directly search "Enerkey" in google play store

Design and Selection Considerations

Battery String Count: Select a balancing protection board supporting 3-24 strings based on the battery pack size to ensure compatibility.

Interface Type: XT60/XT90/Anderson plugs are available to adapt to different application scenarios.

Casing Material: FR-4 epoxy resin board or aluminum substrate are available; the former is cheaper, while the latter offers better heat dissipation.

Recovery Method: Short circuit recovery supports automatic/manual options to adapt to different maintenance needs.

Precautions

Parameter Matching: The protection threshold of the balancing protection board must be strictly matched with the battery parameters to avoid false protection or protection failure.

Heat Dissipation Design: The active balancing circuit must consider heat dissipation to prevent performance degradation due to high temperatures.

Electromagnetic Compatibility: Must pass EMC testing to avoid interference with other electronic devices. We currently have these products in stock, with parameters covering 10A-100A continuous overcurrent protection and 200A-500A instantaneous overcurrent protection, supporting 3-24 string battery packs. Please contact us for more information.