Battery Management System (BMS) Software & Hardware Design

The performance, safety, and lifespan of battery-powered systems rely heavily on their Battery Management System (BMS). Whether you’re building electric vehicles, energy storage solutions, laptops, or battery-powered robotics, a custom BMS ensures efficiency, real-time monitoring, and protection at every level. Battery protection is a core function of BMS, incorporating measures such as overcurrent, overvoltage, thermal runaway prevention, and the ability to disconnect the battery in hazardous conditions to safeguard both safety and longevity.

For example, a BMS can balance cells to prevent excessive discharge and protect against voltage imbalances, while also monitoring voltage level across individual cells and the entire pack. There are many variations in BMS design, with some systems developed as BMS dedicated solutions tailored for specific battery pack designs or applications, offering advanced features and optimised capacity management. BMS also helps protect batteries from electrical and thermal hazards, ensuring safe operation.

At Promwad, we design custom BMS hardware and embedded software for Li-ion, LiFePO₄, and other chemistries, optimised for your application’s performance, capacity, cost, and safety requirements. Our solutions are developed to meet the needs of professionals such as engineers and designers and we integrate advanced BMS features for proper charging management.

We ensure batteries are safely charged using controlled charging techniques, such as constant current followed by constant voltage. The BMS works with the charger to regulate charging and prevent overcharging, while regular maintenance is essential for troubleshooting and prolonging battery life. The choice of BMS architecture and features can significantly impact overall costs. 

Battery management systems (BMS) are at the core of modern battery-powered technology, ensuring that lithium ion batteries and other advanced chemistries operate safely, efficiently, and reliably. As the demand for electric vehicles, energy storage, and portable electronics grows, battery management systems become even more critical. A BMS is responsible for overseeing performance of every battery pack, from monitoring individual battery cells to managing the system’s voltage, temperature, and current.

Developing a custom BMS solution requires deep expertise in battery technologies, embedded software, hardware design, and firmware development. Engineers must tailor each system to the specific needs of the application, whether it’s a high-performance lithium ion battery pack for electric vehicles or a reliable backup power solution for medical devices. Functional safety, compliance with industry standards, and integration with other components are critical for successful BMS design.