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This invention describes a smart battery charger that can power up various types of batteries. It uses a digitally controlled power supply, which can be a variable-frequency generator, to adjust the alternating current output. This current then passes through a foil-type transformer before being converted to direct current for charging, allowing it to automatically adapt to different battery voltages and charge them by first gradually increasing the current and then maintaining a steady current or voltage.
Why it matters: The significant growth in electric and hybrid vehicle adoption since 2003 has created a massive demand for efficient, adaptable, and smart battery charging solutions. Advances in power electronics and digital control make the variable-frequency and multi-voltage capabilities of this charger more practical and performant for modern EV charging infrastructure, which was nascent at the time of filing.
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