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BMS (Battery management system) for electric vehicles - why?

As the modernization in technology and price drop continue, consumers are placed in the position of being attracted to a product but wandering in a state of dilemma, if it would be wise to wait for the “newest and advanced product”. The expectation of customers is very high, and vehicle OEM’s are struggling to deliver it in a cost-effective way without compromising on the performance. Every EV OEM’s eye is focussed onto the heart, the battery and its associated BMS. And the question arise, is there any reliable, trusted Battery Management Systems?

Current Scenario

OEM’s try to balance performance and safety (i.e., EV suppliers around the world race to expand the range and promote quick-speed charging), major challenges arise, issues at high temperature threatening the thermal stability of active materials within the battery, and thus the occurrence of short circuits that may result into “thermal runaway”. Breakdown of vehicle on roads will not only result in loss of goodwill, but will also extract huge potential warranty costs from the manufactures.

EVs first came into existence in the mid-19th century, when electricity was among the preferred methods for motor vehicle propulsion, providing a level of comfort and ease of operation that could not be achieved by the gasoline cars of the time. Modern internal combustion engines have been the dominant propulsion method for motor vehicles for almost 100 years, but electric power has remained commonplace in other vehicle types, such as trains and smaller vehicles of all types.

Recently the world is abruptly moving towards an electric vehicle revolution braced by the supportive government policies and technological advancements. The number of private electric-vehicle charging stations too continues to expand day by day, driven by the factors such as convenience, cost-effectiveness and a dozen of subsidies, incentives & support policies.

BMS and its Role

The BMS plays a vital role here, the job of the BMS is to constantly monitor the battery. An effective BMS will accurately measure the power left in each cell and monitor temperature across the battery pack to ensures thermal stability. It balances power by either charging/discharging or leave a cell alone. The objective is to leverage the entire energy available in the battery without effecting the sustainability of it to ensures the long-time health of the battery cell.

It’s a clear fact that that, ensuring the safety of EV batteries is never a “solved issue, closed chapter” for EV manufacturers, and the only option is to accommodate a proven/efficient BMS.


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