The invention provides a vehicle power supply system based on a lithium battery. The vehicle power supply system comprises a power battery pack; the bidirectional DC/DC converter is connected with the power battery pack; the vehicle controller is connected with the bidirectional DC/DC converter; the data acquisition unit is used for acquiring operation parameters of the power battery pack and comprises an AFE chip, a current, voltage and temperature acquisition module and an SOC acquisition module; the protection unit is connected with the data acquisition unit and comprises a fault threshold determination module and a diagnosis strategy making module, and the fault threshold determination module is used for setting a proper fault threshold; the diagnosis strategy making module is used for making a diagnosis strategy based on the operation parameters and a fault threshold value and feeding back fault information; and the MCU control unit is connected with the AFE chip, the bidirectional DC/DC converter and the protection unit, and is used for controlling the bidirectional DC/DC converter, monitoring information and triggering a protection mechanism. The method improves the performance and safety of the electric vehicle, and has remarkable social and economic benefits.
本发明提供了一种基于锂电池的车辆供电系统,包括动力电池包;双向DC/DC变换器,其与动力电池包连接;车辆控制器,其与双向DC/DC变换器连接;数据采集单元,用于采集动力电池包的运行参数,包括AFE芯片、电流、电压和温度采集模块和SOC获取模块;保护单元,其与数据采集单元连接,包括故障阈值确定模块和诊断策略制定模块,故障阈值确定模块用于设定合适的故障阈值;诊断策略制定模块用于基于运行参数和故障阈值制定诊断策略,对故障信息进行反馈;MCU控制单元,其与AFE芯片、双向DC/DC变换器和保护单元连接,用于对双向DC/DC变换器的控制、信息监测以及保护机制的触发。本发明提高了电动车辆性能和安全性,具有显著的社会和经济效益。
Vehicle power supply system based on lithium battery
一种基于锂电池的车辆供电系统
09.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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