The commitment of the proposed circuit is to generate a steady output power over a broad range of input. This work aims to implement a complete energy harvesting system with a proper battery management circuit. Therefore, spare power consumption is significantly decreased, making the proposed system suitable for IoT sensors and event-driven devices in general. If the duty cycle of these bursts is low, that means the entire energy required for a burst can be gathered within bursts, then the output can be maintained totally by the harvester itself. The proposed method uses a novel battery management system which is ideal for wireless sensor systems that require a high intensive burst of power to complete a task and consume low average power. Battery management systems are crucial for lowering battery power usage and extending the system's lifespan. The main role of the proposed BMC is to monitor and regulate the battery operation, such as charging or discharging processes, to maintain the battery's health, and to reduce the chance of battery damage by ensuring that the battery delivers the optimal amount of energy to operate the load. We report a Battery Management Circuit (BMC) in this paper that significantly enhances the battery longevity of components that are triggered by events, primarily without being in standby mode and having enormous power switches on or off-chip. The battery impedance characteristics were also examined by using non-destructive techniques, such as electrochemical impedance spectroscopy, and it was determined that the ambient temperature at which the battery was charged had the most effect on the battery impedance parameters. It is also determined that the duty cycle of the pulse charge current has the most impact on the cycle life of the battery. The results are compared with the benchmark constant current-constant voltage (CC-CV) charging algorithm and it is observed that by using a pulse charger at optimal parameters, the cycle life of a LiPo battery can be increased by as much as 100 cycles. This paper seeks to evaluate the impact of pulse charge current factors, such as frequency and duty cycle, on the life cycle and impedance parameters of lithium-ion polymer batteries (LiPo) while using a design of experiments approach, Taguchi orthogonal arrays.
The impact of pulse charge current factors on the life cycle and battery characteristics are seldom investigated. However, to get the benefits of pulse charging, the pulse charge current parameters have to be chosen carefully to ensure optimal battery performance and also extend the life cycle of the battery. The pulse charging algorithm is seen as a promising battery charging technique to satisfy the needs of electronic device consumers to have fast charging and increased battery charge and energy efficiencies.
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