With continuous advancements over time and the rapid development of rechargeable devices,there has been a significant increase in battery research and development,particularly in the automotive and home ap-pliance sectors.This growth has led to a sharp rise in the production of rechargeable batteries.However,it has also resulted in higher performance requirements for rechargeable batteries,including improved charging efficien-cy,reduced costs,lighter weight,and enhanced safety and practicality.Designing circuits from an environmental perspective has become a crucial factor in modern product design.This paper primarily introduces a charging cir-cuit for an auxiliary battery in new energy vehicle equipment,aiming to improve battery usability and contribute to environmental sustainability.
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