Inverter integrated into motor

Abstract

The invention relates to an inverter integrated into a motor. The inverter is characterized in that the inverter is integrated into the rear side of the motor; the bearing of a reducer output shaft is arranged on the inverter; a wire connector, a DC busbar, and a Y capacitor are arranged below a DC bus capacitor; the wire connector is installed on a main box; an air conditioner fuse is fixed to the embedded nuts of the wire connector; one end of the air conditioner fuse is connected with the negative extension end of the DC busbar; the other end of the air conditioner fuse is connected with the negative wire harness of an air conditioner connector; the DC busbar is electrically connected with the terminal of a DC connector and is connected with one end of the air conditioner fuse and the positive wire harness of the air conditioner connector at the wire connector. The inverter can be well integrated with the motor and the reducer, and the entire integrated device occupies small space as much as possible. Further, the inverter is compact in structure, low in cost, high in power density, and simple and reliable in cooling design.

Description

technical field [0001] The invention relates to an inverter integrated in a motor, which is an inverter structure highly integrated with a motor in an electric vehicle. Background technique [0002] In an electric vehicle, the inverter is a key component to realize the DC power supply of the battery, the AC power conversion of the motor, and the driving operation of the motor. It belongs to the core power component of the electric vehicle, and it must be able to operate continuously and reliably. [0003] At present, the matching inverters on electric vehicles are generally installed independently on the frame, and the motor and inverter generally transmit AC power, control signals, and coolant through high-voltage wire harnesses, low-voltage wire harnesses, and water pipes, resulting in high costs, Energy loss and space waste, etc., so the integrated design of motors, inverters and reducers has become the development direction of electric vehicles. Patent CN102267362A desc...

AI Technical Summary

Problems solved by technology

However, the water channel design of the integrated device is too complicated, resulting in difficult sealing and reduced reliability; the integrated device does not further solve or explain the integration method of the inverter and transmission; the outgoing line of the high and low voltage wiring harness of the inverter of the integrated device The direction is the radial direction of the motor, and the axial space of the motor is not optimally used, resulting in a large vehicle space required for the integrated device

[0004] In view of the above problems, it is necessary to design a compact inverter that is suitable for electric vehicles, especially pure electric cars, and solves the problems of low integration of inverters, motors and even reducers, serious waste of space, high cost, complex structure, and low reliability. transformer

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