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Developing Hybrid–Power Fuel Cells with a Low–Pressure Hydrogen–Storage System used in an Electric Forklifts

机译:开发用于电动叉车的具有低压储氢系统的混合动力燃料电池

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In this study, we prepared a lab–built water–cooled fuel cell hybrid power system. This system contains 2.7 kW proton exchange membrane fuel cells, ultracapacitors, and lithium batteries that are actually constructed in a commercial electric forklift, APT–20. This hybrid system can conform to the working state of a typical electric forklift, providing lifting loads of 1000 kg at 4 kW. This system is designed to control the fuel cell so as not to exceed its own power generating capacity of 74% in operation, so it is coupled with a fluctuating load of a set of small fuel cells to assist in balancing power. For maximum power output to the lift motor, it is coupled with a set of independent supply lift motors to increase kinetic energy and improve the overall output state. The fuel supply is a low– pressure hydrogen–storage system, consisting of four tanks of low–pressure steel hydrogen–storage cylinders to be used by the fuel cell. It thus provides a safer hydrogen–storage method for use in factory transport vehicles. By designing two sets of auxiliary power sources with different powers, it is anticipated that the fuel cell output can be maintained at 1.8 kW to 2 kW, such that the fuel cell has stable output and prolonged life–span, and can be maintained under a good working environment, and that the overall system has maximum effectiveness in supplying the necessary kinetic energy according to the usage requirements.
机译:在这项研究中,我们准备了一个实验室建造的水冷式燃料电池混合动力系统。该系统包含2.7 kW质子交换膜燃料电池,超级电容器和锂电池,这些电池实际上是在商用电动叉车APT-20中构建的。这种混合动力系统可以符合典型的电动叉车的工作状态,在4 kW时可提供1000 kg的提升载荷。该系统旨在控制燃料电池,以使其在运行时不超过自身发电能力的74%,因此它与一组小型燃料电池的波动负载相结合,以帮助平衡功率。为了将最大功率输出到提升电机,它与一组独立的供应提升电机相结合,以增加动能并改善整体输出状态。燃料供应是一个低压氢气存储系统,由四个供燃料电池使用的低压钢制氢气存储缸组成。因此,它为工厂运输车辆提供了一种更安全的储氢方法。通过设计两组具有不同功率的辅助电源,可以将燃料电池的输出保持在1.8 kW至2 kW,从而使燃料电池具有稳定的输出和更长的使用寿命,并且可以保持在良好的工作环境,并且整个系统在根据使用要求提供必要的动能方面具有最大的效率。

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