Multifunctional protection plate for vehicle-mounted energy storage type guide rail electric car

Abstract

The invention belongs to the technical field of protection plates of power units, and relates to a multifunctional protection plate for a vehicle-mounted energy storage type guide rail electric car. The protection plate comprises a lower plate and an upper plate which are detachably connected; the lower plate is fixedly installed on a heat radiator of a power unit; bending portions are arranged around the lower plate; and the upper plate is provided with a mounting structure configured to fix a converter component. According to the multifunctional protection plate, the narrow spatial arrangement of the protection plate is compact and reasonable through the design of the stacked design of the lower plate and the upper plate; through detachable connection of the lower plate and the upper plate, when the power unit is maintained, the upper plate and the converter part thereof are needed to be one body for dismounting so as to simplify the dismounting process; the protection plate can achieve the mechanical support function that putting a high-voltage copper row, a current sensor and an insulation terminal onto the power module by employing the upper plate while having the dust prevention function; and moreover, an aluminum alloy plate is selected to be folded and pressed to form the protection plate, and the weight of the power unit cannot be increased.

Description

technical field [0001] The invention belongs to the technical field of guide rail cars, and relates to a protective plate, in particular to a multifunctional protective plate for a vehicle-mounted energy storage type guide rail car. Background technique [0002] With the development of power electronics technology, the power electronic conversion system puts forward higher requirements for efficiency and volume: on the one hand, it is hoped that all power devices will be integrated in one power unit; light weight and miniaturization. Therefore, how to balance the requirements of these two aspects is the direction of all converter technology research. At present, the high density, miniaturization and light weight of the power unit are mainly reflected in the design of its sub-components. The protective plate is the last part of the power unit. Its general function is only to protect the integrated circuit board. The material generally used is PC material. [0003] However,...

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Problems solved by technology

[0003] However, the protection boards of the existing power units generally only protect the circuit board and have a single function, and the design of the single board of the protection board makes its mechanical strength weak, which cannot meet the needs of the converter to connect the high-voltage copper bars, current sensors, insulation The design requirement that the terminals be placed on the power module; at the same time, since the high-voltage AC copper bar of the converter passes through the upper end of the power unit, the material selection of the protective plate also needs to consider shielding electromagnetic interference, and the commonly used PC material cannot meet this requirement. requirements; in addition, the protective plate of the single-board design also limits the layout space between the components of the power unit

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