PEMFC (proton exchange membrane fuel cell) emergency power supply system

Abstract

The invention discloses a PEMFC (proton exchange membrane fuel cell) emergency power supply system, which is designed for solving the problems that the existing emergency power supply is short in continuous power supply time and can not provide charge recovering on emergency occasions, and a gasoline generator is bulky and large in noises and releases harmful gases. The system disclosed by the invention comprises a system controller, a PEMFC, a fuel cell controller, a DC / DC (direct current) conversion circuit, a lithium battery and a charging and battery management system, wherein the fuel cell controller is used for carrying out controlling and monitoring on the PEMFC, and transmitting information to the system controller through a CAN (controller area network) bus; the DC / DC conversion circuit is controlled by the system controller, and connected to a load by the PEMFC, and the load is controlled by the system controller; the lithium battery is connected between the PEMFC and the load; and the charging and battery management system is controlled by the system controller and controls the operating state of the lithium battery. The emergency power supply system supplied power jointly by the PEMFC and the lithium battery can ensure the continuous power supply during a hydrogen storage vessel replacement period; and the system is long on continuous power supply time and noiseless, and has zero discharge.

Description

technical field [0001] 本发明属于供电系统,具体是质子交换膜燃料电池应急供电系统。 Background technique [0002] 我国幅员辽阔,自然灾害频发,在抢险救灾和突发事件处置中常用的锂电池、镍氢电池、铅酸电池等应急电源连续供电时间短且在应急场合无法提供充电恢复,汽油发电机比较笨重、噪音大且释放有害气体。 Contents of the invention [0003] 本发明要解决的技术问题和提出的技术任务是克服现有应急电源连续供电时间短且在应急场合无法提供充电恢复,汽油发电机比较笨重、噪音大且释放有害气体的缺陷,提供一种可连续供电、根据锂电池SOC、燃料电池最佳工作状态以及负载情况进行能量动态分配与管理的质子交换膜燃料电池应急供电系统。 [0004] 为达到上述目的,本发明的质子交换膜燃料电池应急供电系统,其特征是其包括: [0005] 系统控制器; [0006] 质子交换膜燃料电池; [0007] 燃料电池控制器,其对所述的质子交换膜燃料电池进行控制和监测并通过CAN总线将信息传输至所述的系统控制器; [0008] DC / DC变换电路,其受控于所述的系统控制器并经所述的质子交换膜燃料电池接向负载,所述的负载受控于所述的系统控制器; [0009] 锂电池,其连接在所述质子交换膜燃料电池与负载之间; [0010] 充电与电池管理系统,其受控于所述的系统控制器并控制所述锂电池的工作状态。 [0011] 作为优选技术措施,所述的负载、DC / DC变换电路、充电与电池管理系统通过CAN总线受控于所述的系统控制器。 [0012] 作为优选技术措施,所述的充电与电池管理系统为BQ24610的3脚ACDRV输出低电平、batdr输出高电平使Q1导通、Q3截止,燃料电池输出电压经过Q1、R2和R21加到BQ24610的24脚Vcc,为充电芯片提供电源。进一步的,所述的充电与电池管理系统中设有充放电状态指示LED、提供工作模式控制电压的电阻、充电驱动信号输出开关、续流二极管、充电电流检测电阻、锂电池电压检测电阻、总电流检测电阻,BQ24610的第4脚为充电使能端,第6脚为温度检测端。 [0013] 作为优选技术措施,所述的DC / DC变换电路采用集成变换器...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to overcome the shortcomings of the existing emergency power supply that the continuous power supply time is short and cannot provide charging recovery in emergency situations, and the gasoline generator is relatively heavy, noisy and releases harmful gases. Continuous power supply, proton exchange membrane fuel cell emergency power supply system for dynamic energy distribution and management according to lithium battery SOC, fuel cell optimal working status and load conditions

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