Single-tube IGBT parallel motor control system

Abstract

The invention discloses a single-tube IGBT parallel motor control system and belongs to the IGBT field. The single-tube IGBT parallel motor control system module comprises an IGBT assembly, a controland drive integrated circuit board, a laminated busbar, a capacitor, a three-phase copper bar injection molding part, and a radiator for an IGBT; the structures and the corresponding connection relations of each phase of the IGBT assembly are identical respectively; the A phase is formed by a first A-phase upper bridge arm IGBT-, a second A-phase upper bridge arm IGBT-, a first A-phase lower bridge arm IGBT- and a second A-phase lower bridge arm IGBT-, wherein the first A-phase upper bridge arm IGBT- and the second A-phase upper bridge arm IGBT- are connected in parallel, and the first A-phaselower bridge arm IGBT- and the second A-phase lower bridge arm IGBT- are connected in parallel; the IGBT assembly is connected with the laminated busbar and an output copper bar- of the capacitor; a750V / 340A multi-tube IGBT parallel connection technology is adopted; meanwhile, direct connection and interconnection welding processes in different modes are adopted; compared with a single-tube scheme on the market, the system of the invention has better reliability and consistency. The system has the technical advantages of compact structure, high integration level, light weight, flexible platform expansion and the like; and meanwhile, traditional bolt connection and wiring harness connection are omitted in design, so that assembling is easier and more convenient. The system is suitable forautomatic batch manufacturing, and provides a technological basis for assembling with a higher automation degree.

Description

technical field [0001] The invention relates to the field of IGBTs, in particular to a single-tube IGBT parallel motor control system. Background technique [0002] The traditional parallel motor control system generally adopts a single-tube solution, which has poor reliability. At the same time, the structure is generally large and the interior is loose. Usually, bolt connections, wire harness connections, etc. are used, and thermal conductive silicone grease needs to be filled between components. Not only does it cause large volume and heavy weight, but the system thermal resistance is generally relatively large, and the reliability is not very ideal. [0003] Moreover, the components are generally small in size, and the assembly one by one, whether it is wiring harness connection or bolt fixing, requires manual operation, and the production efficiency is relatively low, which is not suitable for automated mass production. Contents of the invention [0004] The purpose ...

AI Technical Summary

Problems solved by technology

[0002] The traditional parallel motor control system generally adopts a single-tube solution, which has poor reliability. At the same time, the structure is generally large and the interior is loose. Usually, bolt connections, wire harness connections, etc. are used, and thermal conductive silicone grease needs to be filled between components. Not only does it cause large volume and heavy weight, but the thermal resistance of the system is generally relatively large, and the reliability is not very ideal.

[0003] Moreover, the components are generally small in size, and the assembly of one by one, whether it is wiring harness connection or bolting, requires manual operation, and the production efficiency is relatively low, which is not suitable for automated mass production.

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