Hybrid power supply system of tramcar

Abstract

The invention discloses a hybrid power supply system of a tramcar, and relates to the technical field of tramcars. The hybrid power supply system is composed of a hybrid type supercapacitor and an electrical double-layer supercapacitor, wherein the hybrid type supercapacitor is used for supplying power as a main driving source during operation of the tramcar, and the electrical double-layer supercapacitor is used for supplying power as an auxiliary driving source in the starting stage of the tramcar. Compared with the electrical double-layer supercapacitor, the hybrid type supercapacitor has higher energy density and can provide much enough energy under the condition of relatively small occupied space, and thus the tramcar has enough endurance mileage. Compared with a storage battery, theelectrical double-layer supercapacitor has high power density and can provide high power in the starting stage of the tramcar; energy is recovered in the braking stage, and requirements of the tramcarduring starting and braking are fully met.

Description

technical field [0001] The present application relates to the field of new energy technology, in particular to a hybrid power supply system for trams. Background technique [0002] Tram is a light-duty rail transit vehicle that is driven by electricity and runs on the track. It is an environmentally friendly and convenient public transportation tool. [0003] At present, with the development of domestic trams, the operating range of trams in various regions is getting wider and wider, and the distance between line stations is also increasing, which means that the tram power supply system must meet the requirements of large energy in the original space. , high power, fast charging speed and other characteristic requirements. [0004] Specifically, the current power supply system of domestic trams uses electric double-layer supercapacitors as the main drive source, and batteries as the auxiliary drive source. The energy density of electric double-layer supercapacitors is low...

AI Technical Summary

Problems solved by technology

The energy density of electric double-layer supercapacitors is low, and a large number of monomers are required to be connected in series and parallel, which may not meet the volume requirements of the whole vehicle

In addition, although the battery as an auxiliary driving source has a strong energy storage capacity, its power density is low, and it cannot fully absorb the recovered energy when the vehicle is braked. Long-term high-power working conditions have a greater impact on the life of the battery; in addition, The power supply provided by the battery also has disadvantages such as large ripple voltage and poor anti-interference ability.

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