Researchers at the National Institute of Technology (NIT) Rourkela have secured a patent for an indigenous hybrid energy storage architecture designed to extend electric vehicle battery life. Led by Associate Professor Monalisa Patnaik alongside Dr Pradyumna Kumar Behera and Karan Gupta, the team developed a power management system combining a standard battery pack with a supercapacitor to absorb sudden power demands and mitigate heavy current stress during acceleration and braking.
The technological innovation arrives as India's electric vehicle sector faces increasing consumer scrutiny over long-term battery durability and performance degradation under severe driving conditions. Frequent urban braking, rapid acceleration, and sudden power fluctuations place immense strain on conventional lithium-ion and chemical cells, causing gradual capacity loss. By integrating a supercapacitor capable of instantaneous energy absorption and release, the NIT Rourkela architecture isolates the primary battery from sharp current spikes, promising superior lifecycle economics for light electric transport.
Hybrid Energy Storage Mechanics and Control Architecture
The fundamental challenge in modern electric mobility stems from how individual cells handle fluctuating electrical loads. During rapid acceleration, the vehicle demands a surge of current, while regenerative braking forces energy back into the storage medium in sudden bursts. Repeated high-current charge and discharge cycles degrade the internal structure of battery cells over time, driving up maintenance concerns for manufacturers and fleet operators alike.
To counter this, the newly patented design consolidates power conversion through an optimized layout featuring a single converter, an inductor, and an integrated control system. Explaining the architecture, Professor Monalisa Patnaik stated: "The developed architecture has three major components: a converter that connects the battery and supercapacitor to the vehicle’s electrical system, an inductor placed in the electrical path, and a single control system that regulates the flow of power." This simplified configuration minimizes hardware complexity while maintaining efficient energy distribution.
Streamlining Components for Low-Voltage Platforms
Unlike complex multi-converter systems that introduce significant manufacturing overhead and control challenges, the NIT Rourkela configuration uses a single converter to serve both the battery and the supercapacitor. This reduction in the number of electronic switches and control components lowers system overhead while the placement of the inductor regulates sudden changes in current across the electrical pathway.
The technology has been specifically engineered for low-voltage electric vehicle platforms operating within the 24 to 60 volt DC range. This precise voltage specification targets light urban mobility segments, including electric scooters, electric motorcycles, e-rickshaws, cargo tricycles, and specialized small vehicles deployed within industrial campuses or closed logistics environments.
Expanding Industrial Applications Beyond Road Transport
The utility of the newly patented hybrid storage architecture extends past traditional two-wheelers and three-wheelers into broader industrial automation and renewable energy frameworks. According to the research team, potential deployments include automated guided vehicles, factory warehouse carts, DC microgrids, and solar or wind-integrated charging stations where load stabilization is critical.
These secondary applications benefit from the supercapacitor's ability to handle high-frequency power transients without thermal or chemical degradation. By buffering intermittent power draws, the system protects sensitive microgrid components and extends the operational deployment window for industrial automation hardware operating on low-voltage DC buses.
Local Innovation Amid Global Supercapacitor R&D
The integration of supercapacitors with electrochemical batteries is actively researched worldwide, mirroring advanced power management explorations across Japan, the United States, and Europe. High-performance automotive examples, such as Lamborghini’s Sián FKP 37, utilize supercapacitors for rapid energy recovery during braking, though such luxury implementations remain cost-prohibitive for mass-market segments.
By contrast, the NIT Rourkela breakthrough focuses specifically on cost-effective low-voltage architecture. The design addresses the delicate balance between manufacturing cost, control complexity, and overall energy efficiency, positioning domestic Indian engineering to tackle durability challenges at the foundational level of EV adoption.
Path from Laboratory Innovation to Commercial Deployment
The primary hurdle facing the patented hybrid energy storage system remains the transition from academic validation to commercial automotive manufacturing lines. If commercialized successfully by EV component suppliers and vehicle assemblers, the technology could substantially improve real-world reliability and vehicle resale values by preserving battery health.
Industry analysts note that as India's EV market matures past initial manufacturing volume targets, the secondary market will increasingly reward extended durability and lower total cost of ownership. The NIT Rourkela architecture represents a structural step toward indigenous self-reliance in high-efficiency power electronics.
