5–24S LFP / 5–20S NMC BMS for Battery Swapping and Light Electric Vehicles

This coverage allows the BMS platform to be applied across different battery pack configurations rather than being limited to one fixed vehicle or battery format.

The final BMS configuration depends on the battery chemistry, series count, current requirements and other project-specific conditions.

Monitoring Battery Pack Operating Conditions

Reliable battery management starts with continuous measurement of key electrical and thermal conditions.

The BMS monitors parameters including:

• Individual cell voltage

• Total pack voltage

• Charge and discharge current

• MOS temperature

• External NTC temperature

This information provides the basic operating data required for battery protection and status management.

For applications such as battery swapping, vehicle batteries and compact electric vehicles, monitoring also supports the reporting of battery status to the vehicle, swapping system or other connected equipment.

Protection and Battery State Management

Battery protection is another core function of the BMS.

The platform supports multiple protection functions covering conditions such as cell overvoltage, undervoltage, charge and discharge overcurrent, short circuit, temperature abnormalities, cell voltage difference and temperature difference.

Protection strategies can include delay and recovery logic according to the configured application requirements.

In addition to protection, the BMS provides SOC and SOH estimation, cycle information and operating-state data. These functions help connected systems understand the available battery state and support battery operation and maintenance.

Specific protection parameters and operating settings are determined according to the battery chemistry and project requirements rather than using one fixed parameter set for every application.

Common-Port and Low-Side Control Architecture

The BMS platform uses a common charge/discharge port and low-side control architecture for the standard product configuration.

For battery designers, the control topology is an important part of BMS selection because it needs to match the electrical architecture of the battery pack, charger and load.

Before selecting a BMS, the required port configuration, control method, continuous current and system connections should therefore be confirmed together with the battery design.

Communication for Vehicle and Battery System Integration

A BMS is also part of the wider battery system rather than an isolated protection board.

Bluetooth and UART are available as standard communication options, while CAN, RS485 and other interfaces can be configured according to project requirements.

Communication requirements may differ between applications. A battery-swapping system may need battery status information to interact with a swapping cabinet or management platform, while a vehicle application may require communication with a display, controller or other vehicle electronics.

The communication interface and related parameters should therefore be confirmed during project selection and technical review.

BMS Applications in Battery Swapping and Light Electric Vehicles

The BMS platform is suited to several battery applications where compact size, protection, status monitoring and system communication are important.

Two-Wheel Battery Swapping

For two-wheel battery-swapping systems, the BMS can provide battery status, temperature and fault information while supporting low-power operation and charge wake-up.

System integration may involve communication between the battery, swapping cabinet and backend platform. Connector, communication and protection requirements should be confirmed according to the specific swapping system.

Electric Three-Wheel Vehicles

Three-wheel electric vehicles can experience continuous loads, starting current peaks, vibration and temperature changes.

BMS selection should therefore consider the battery's continuous current requirements, wiring and terminal capacity, thermal conditions and communication requirements.

Compact Four-Wheel Electric Vehicles

Compact four-wheel applications may require the BMS to communicate with vehicle displays or controllers and provide information such as SOC, alarms and permitted operating conditions.

CAN or RS485 communication may be considered depending on the vehicle's electrical architecture and integration requirements.

How to Select the Right BMS

A suitable BMS should be selected together with the battery pack rather than based on current rating alone.

Key information to confirm includes:

1. Battery chemistry — LFP, NMC or another chemistry

2. Cell series count — the required number of cells in series

3. Continuous charge and discharge current

4. Battery port architecture

5. Control topology

6. Communication requirements

7. Application environment

8. Mechanical and wiring requirements

9. Vehicle or battery-system integration requirements

This information allows the BMS configuration to be reviewed before quotation, sampling and mass production.

Discuss Your BMS Requirements with ESHINE

Different battery packs can require different BMS configurations even when they use the same battery chemistry.

If you are developing a battery-swapping system, two-wheel, three-wheel or compact four-wheel electric vehicle, ESHINE can review your battery configuration and application requirements to help identify a suitable BMS solution.

For more information about the BMS platform, visit our  Battery Management System (BMS)  page or contact our team with your battery chemistry, series count, current requirements and application details.