High integration motor controller assembly

Abstract

The invention discloses a high integration motor controller assembly which comprises a shell, multiple power devices, a first circuit board, a bus capacitor, a second circuit board, and a fixed clamp. The multiple power devices are integrated on the first circuit board to form a power conversion circuit. A driving circuit and a control circuit are integrated in the second circuit board. The first circuit board, the second circuit board and the bus capacitor are arranged in the cavity part of the shell. The wall of the shell is provided with a cooling channel and a fixed hole. The bottom of the shell is provided with a wire outlet hole. The bottom of the first circuit board projects to form a support pillar, and three phases of output and positive and negative buses are contained in the support pillar. The signal terminal of each power device is welded to the first circuit board, one end of the fixed clamp is pressed into the fixed hole, the other end of the fixed clamp is pressed into the fixed hole, and the upper end part without electrical appliance connection of each power device is clamped to the wall by the other end of the fixed clamp such that the power device is in close contact with the wall. The motor controller of the invention has the advantages of a compact and integrated structure, high temperature resistance, strong vibration resistance and the reduction of cost.

Description

technical field [0001] The invention relates to a motor controller assembly, in particular to an integrated motor controller assembly for a new energy vehicle. Background technique [0002] The upcoming emission regulations stipulate that all vehicles sold in 2021 must meet the carbon dioxide emission standard down to 95g / km. With CO2 emissions averaging 130g / km at present, emissions need to be reduced by around 30%, which will require a huge effort, especially in the powertrain. Pure electric, hybrid and plug-in hybrid technologies can address this challenge, but require high voltages of several hundred volts, battery costs are currently quite expensive, and at the same time, these technologies require major changes to the chassis architecture. Low-voltage motor system, such as 48V system, as a mild hybrid technology, is considered to be the most cost-effective fuel-saving solution at the present stage, and it also contributes to the acceleration of the car. Concern, and ...

AI Technical Summary

Problems solved by technology

[0003] The low-voltage motor system generally adopts the scheme of integrating the motor and the motor controller, and the installation location is generally near the engine, so the working environment of the motor system is relatively harsh

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