A vehicle-mounted auxiliary power supply system based on low-voltage lithium batteries belongs to the technical field of battery safety and comprises a first lithium battery pack, a second lithium battery pack, a third lithium battery pack, a closed contactor group, an anti-backflow diode module, an overload protection module, a battery maintenance module, an auxiliary output port and a BMS module. The reliability of auxiliary power supply is improved by adopting a parallel redundant operation mode of three battery packs; in addition, low-voltage lithium battery pack total voltage undervoltage early warning and protection measures are designed, and the battery undervoltage fault can be determined in a sound-light alarm mode; state display and electric quantity display functions are designed, and the running state of the battery pack can be rapidly and visually determined; a CAN communication interface is designed, so that data of the battery pack can be read through a vehicle machine or an upper computer; a maintenance interface is designed, so that a user can access 220V mains supply by himself/herself to maintain the low-voltage lithium battery pack, and the service life is prolonged; an emergency output port is designed, and power can be supplied to other auxiliary power supplies or other electronic devices through the port.

    一种基于低压锂电池的车载辅助供电系统,属于电池安全技术领域,包括:第一锂电池组、第二锂电池组、第三锂电池组、闭合接触器组、防回流二极管模块、过载保护模块、电池维护模块、辅助输出端口和BMS模块。采用三个电池组并联冗余运行方式,增加辅助供电的可靠性;此外,设计低压锂电池组总压欠压预警及保护措施,可通过声光报警方式确定电池欠压故障;设计状态显示及电量显示功能,可快速直观确定电池组运行状态;设计CAN通讯接口,可通过车机或上位机读取电池组数据;设计维护接口,用户可自行接入220V市电对低压锂电池组进行维护,延长使用寿命;设计应急输出端口,可通过此端口对其他辅助电源或其他电子设备进行供电。


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    Title :

    Vehicle-mounted auxiliary power supply system based on low-voltage lithium battery


    Additional title:

    一种基于低压锂电池的车载辅助供电系统


    Contributors:

    Publication date :

    2024-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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