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The lithium-ion rechargeable battery is the use of a wide range of portable batteries . Safe, reliable, fast , and efficient lithium battery charger has a crucial role in the performance and applications of lithium batteries . In response to these problems , we proceed from the structure and chemical principles of the lithium battery , lithium battery performance and common charging method , the process of charging and charging method impact on the performance of lithium batteries , lithium battery application process should pay attention to problems. And design based on an integrated circuit chip for a single lithium battery charge and discharge protection . Rapid charging of the lithium battery principle and on the basis of a variety of charging methods research through internal charge and discharge stringent limit of precise control of voltage and current , and to ensure the safe use of lithium batteries . In addition, the circuit with a time and thermal protection function , more powerful battery protection function , effectively extending the life of lithium batteries . Design for a single lithium battery , small package , easy integration with the battery , the internal highly integrated peripheral circuits . Has wide application surface , the structure is simple , low cost , strong battery protection function , more practical lithium battery protection chip . This topic has independent intellectual property rights , have been identified through the national project and acceptance . Firstly, the composition of lithium batteries and chemical principles , a brief introduction , and then introduces the characteristics and commonly used method of charging lithium battery , the last to start from the overall structure of the chip , focuses on the design and realization of the specific chip circuit , given full-custom method of simulation results , layout , and through tapeout trial test analysis . The final of this topic is the formation of the product , and made ??effective .
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