鋰電池組全電壓檢查方法研究

摘要：針對鋰電池組應(yīng)用中的安全性問題，探究鋰電池組整體電壓測量方法。該方法采用高共模電壓差分放大器INA117AM與超低噪聲精密儀器放大器OPA27AJ相結(jié)合，對鋰電池組的全電壓進(jìn)行實(shí)時檢測保護(hù)。實(shí)驗結(jié)果表明，該方法能夠精確測量微弱差分電壓，測量誤差小，精度高，實(shí)現(xiàn)對鋰電池組電壓實(shí)時檢測。該方法操作簡單、直觀，使用方便，具有結(jié)構(gòu)簡單，測量精度高，且能消除紋波、噪聲和靜電電流影響等優(yōu)點(diǎn)，能夠有效保證鋰電池組應(yīng)用中的可靠性，能夠?qū)︿囯姵亟M的安全使用提供技術(shù)和方法參考。 敘詞：鋰電池組 電壓檢測 差分放大器 Abstract：Aiming at the security problems in application of lithium-ion battery pack, explore the full voltage measurement of lithium battery.The method using the combination of high common-mode voltage difference amplifier INA117AM and ultra low noise precision instrument amplifierOPA27AJ, implementation for real-time detection of lithium battery voltage. The experimental results show that this method can accurately measure the weak difference voltage, measurement error is small, high precision, realize real-time detection for lithium battery pack full voltage protection.The method is simple, intuitive and easy to use, it has a simple structure, high measurement precision and can eliminate the ripple, noise and static current influence etc. , and can effectively guarantee the lithium-ion batteries used in reliability, can use the safety of the lithium battery provides technology and methods for reference. Keyword：Lithium battery pack, Voltage detection, Difference amplifier