Novel structured half-bridge module

Abstract

The invention discloses a novel structured half-bridge module. A capacitor module part comprises compensating and filtering capacitors which are uniformly distributed on a capacitor PCB in a horizontal line shape, and the capacitors are embedded in an aluminum shell; a power driving module part comprises a power module PCB; a power module current confluence copper sheet is welded on the power module PCB; power tubes are uniformly arranged on the two sides of the power module PCB in columns; the power module PCB is also provided with an output copper column, a board-to-board connecting pin base, a power module negative electrode copper strip and a power module positive electrode copper strip; the capacitor module part is connected with the power module negative electrode copper strip and the power module positive electrode copper strip on the power module PCB through screws; and the capacitor module part and the power driving module part are integrated into an integral module. The novelstructured half-bridge module is more optimized and reasonable, so that the capacitors can make full advantages of the current compensating characteristics to the maximum degree, thereby lowering module heating of the power module part and improving the heat dissipation condition.

Description

technical field [0001] The invention relates to a motor driver device, in particular to a half-bridge module with a new structure applied to the motor driver device. Background technique [0002] The motor controller receives the DC output from the battery, and converts the DC power into a three-phase AC output, so each power module part corresponds to one phase of the three-phase power, and is used to output U, V, W three-phase power to the motor of one-phase power supply. The structural design of the motor driver has a great influence on the performance of the driver. The existing structural design of the driver is unreasonable, especially the distribution of the power drive part and the capacitor is unreasonable. For example, the existing half-bridge module generally includes multiple sets of power tube devices , multiple positive terminals, multiple negative terminals, and power bus filter capacitors, so many components bring difficulties to the circuit layout and mecha...

AI Technical Summary

Problems solved by technology

The structural design of the motor driver has a great influence on the performance of the driver. The existing structural design of the driver is unreasonable, especially the distribution of the power drive part and the capacitor is unreasonable. For example, the existing half-bridge module generally includes multiple sets of power tube devices , multiple positive terminals, multiple negative terminals, and power bus filter capacitors, so many components bring difficulties to the circuit layout and mechanical installation layout. As the temperature rises, the output power drops significantly, so the output power of the driver cannot be maintained to the maximum extent.

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