Integrated packaging electrolytic capacitor module of 48V BSG inverter and inverter assembly

Abstract

The invention discloses an integrated packaging electrolytic capacitor module of a 48V BSG inverter and an inverter assembly. The upper side surface of the heat dissipation shell is provided with a capacitor mounting groove and a capacitor positioning column I protruding out of the capacitor mounting groove; a through hole is formed in the center of the capacitor positioning column I; the capacitor bracket is stacked on the heat dissipation shell; a capacitor mounting hole and a capacitor positioning hole I corresponding to the capacitor positioning column I are formed in the capacitor bracket; the electrolytic capacitor is installed in the capacitor installation groove and the capacitor installation hole. A capacitor positive electrode pin and a capacitor negative electrode pin at the upper end of the electrolytic capacitor are correspondingly connected with the positive busbar and the negative busbar. Through two times of glue pouring, rigid connection between the capacitor support and the busbar and rigid connection between the heat dissipation shell and the heat dissipation plate, it can be effectively guaranteed that the capacitor does not shake in the capacitor module, vibration failure of the capacitor pins is avoided, and the capacitor module is firm in fixation, compact in structure, good in anti-seismic performance and high in integration degree.

Description

technical field [0001] The invention relates to a motor controller, in particular to an integrated packaged electrolytic capacitor module and an inverter assembly of a 48V BSG inverter. Background technique [0002] In response to the general environment of energy conservation and emission reduction, the urgent need for environmental protection puts forward higher requirements for reducing the energy consumption of traditional fuel vehicles. The idling start-stop system belonging to the mild hybrid system has the characteristics of low price, small changes to the vehicle structure, and easy popularization. The belt-driven starter generator (Belt-driven Starter Generator, BSG) technology in the mild hybrid has made great progress. progress. The existing integrated BSG system includes a BSG motor and a motor controller. The motor controller is integrated on the rear end of the BSG. The motor controller includes a controller box, a capacitor module, a power module and a contro...

AI Technical Summary

Problems solved by technology

However, since the BSG system is installed in the front wheel train of the engine, its installation space is small and the working environment is complicated, with high temperature and large vibration, which puts forward strict requirements on the inverter of the BSG system, such as the capacity required for its capacitor module Large, small ripple current, small size and good shock resistance

The starting power and torque of commercial vehicles are large, and the driving conditions are complex. The requirements for the BSG system are more stringent. Commercial vehicles require a larger capacity of the BSG system capacitor module, resulting in a larger capacitor volume, which is vulnerable to vibration and failure during the operation of the motor.

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