Power controller based on die-casting mould structure

Abstract

The invention discloses a power controller based on a die-casting mould structure. The power controller comprises a large-current filtering element, a main PCB, a three-phase motor output terminal, a power input terminal, a current detection element, a bus bar, a master control MCU, a signal input filtering module, a wiring terminal, an indicating lamp, an auxiliary power supply discrete element, an elliptical positioning hole, an upper and lower bridge separation driver, a power switch tube, an aluminum substrate, an aluminum housing, heat dissipation teeth and a bridging type crossover auxiliary PCB. According to the technical scheme of the power controller in the invention, a double-row aluminum substrate and an aluminum shell are connected to improve heat dissipation effect, so that the thermal damage to the switch tube is reduced. Based on the bridging manner of PCBs, the current uniformity of power switch tubes connected in parallel is guaranteed to the greatest extent. Meanwhile, the large-current impact resistance of the entire circuit is improved. The power input terminal and three output terminals (U, V and W) are led out in the casting mode by using a copper column and the aluminum shell of a die-casting mould. Therefore, the problem that water flows into the incoming and outgoing lines and the structure of a common controller in the prior art can be solved.

Description

technical field [0001] The invention relates to a controller, in particular to a power controller based on a die-casting mold structure, and belongs to the technical field of electric vehicle accessory equipment application. Background technique [0002] The share of electric vehicles in the national economy is not very high, but it conforms to the national trend of energy conservation and environmental protection, and greatly facilitates short-distance transportation. The most important thing is to play an important role in the national economy by saving and protecting energy and the environment. . [0003] The existing electric vehicle brushless controller has small driving current, poor controller sealing, high repair rate, and adapts to poor ambient temperature. The power switch tube of the ordinary controller is in contact with the shell through insulating sheets and aluminum strips, and the instantaneous heat dissipation efficiency of the power switch tube is low. , T...

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Problems solved by technology

[0003] The existing electric vehicle brushless controller has small driving current, poor controller sealing, high repair rate, and adapts to poor ambient temperature. The power switch tube of the ordinary controller is in contact with the shell through insulating sheets and aluminum strips, and the instantaneous heat dissipation efficiency of the power switch tube is low. , the heat dissipation effect of the aluminum shell is poor, and the existing controller uses separate wires, which is inconvenient for production

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