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Brushless motor controller system and assembly method thereof

A technology of brushless motors and controllers, applied in the direction of electric solid devices, printed circuit components, circuits, etc., can solve the problems of high cost, poor heat dissipation of circuit boards, etc., to reduce heat generation, save labor costs, and avoid manual welding Effect

Pending Publication Date: 2019-05-07
ZHEJIANG LERA NEW ENERGY POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a brushless motor controller system and its assembly method to solve the problems of poor heat dissipation and high cost of the existing brushless motor controller circuit board

Method used

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  • Brushless motor controller system and assembly method thereof
  • Brushless motor controller system and assembly method thereof
  • Brushless motor controller system and assembly method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] refer to image 3 , Figure 4 as well as Figure 5 , this embodiment provides a brushless motor controller system, including a heat dissipation substrate 4 and a controller control motherboard 7;

[0030] The heat dissipation substrate 4 is provided with a signal output terminal 5 and a plurality of MOS transistors. The plurality of MOS transistors include a first MOS transistor 1 and a second MOS transistor 2. The first MOS transistor 1 and the second MOS transistor 2 have two upward The bent pins and the heat dissipation metal substrate 3, and the two upward bent pins are inserted into the controller control main board 7, and the controller control main board 7 is provided with a large current loop, which is connected with the first MOS tube 1 and the first MOS tube 1. The two upward-curved pins of the two MOS transistors 2 are connected, and the heat dissipation metal substrate 3 is connected to the signal output terminal 5 .

[0031] Wherein, the large current lo...

Embodiment 2

[0059] This embodiment provides an assembly method of a brushless motor controller system, such as Figure 6 shown, including steps:

[0060] Form the MOS tube into a patch package, and weld it on the heat dissipation substrate through automatic patch welding;

[0061] Insert the upwardly bent pins of the MOS tube and the positive and negative patch bases into the controller control board;

[0062] Install and fix the heat sink on the heat dissipation substrate through the screw holes on the heat dissipation substrate.

[0063] The installation method in this embodiment is very convenient compared to the existing controller assembly method. Because the existing MOS tube is packaged in TO-220, it cannot be directly welded on the heat dissipation substrate by automatic patch technology. Manual welding is required, and the heat-dissipating metal substrate needs to be fixed on the aluminum alloy plate by screws. This process also requires manual fixing, and the operation steps o...

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Abstract

The invention provides a brushless motor controller system and an assembly method thereof. The system comprises a heat dissipation substrate, MOS transistors and a controller control mainboard, wherein the heat dissipation substrate is provided with a signal output terminal and a plurality of MOS transistors, each MOS transistor is provided with two upward bending pins and a heat dissipation metalsubstrate, the pins are inserted into the controller control mainboard, the controller control mainboard is internally provided with a high-current circuit and a low-current circuit, the high-currentcircuit is connected with the two upward bending pins of each MOS transistor, and the heat dissipation metal substrates are connected with the signal output terminal. The brushless motor controller system uses the heat dissipation metal substrates of the MOS transistors to serve as high-current conductors, thereby reducing the length of the high-current loop, effectively solving the problems of heat generation and excess temperature of a circuit board, and removing the step of additionally installing high-current copper strips to serve as conductors.

Description

technical field [0001] The invention relates to the technical field of garden electric tool control, in particular to a brushless motor controller system and an assembly method thereof. Background technique [0002] The brushless motor controller is a DC-to-AC inverter. Usually, it needs to use multiple TO-220 packaged MOS tubes. The MOS tubes are high-current power devices with large operating current and high heat generation during operation. Such as figure 2 As shown, the traditional controller MOS tube installation process is to weld the MOS tube on the PCB circuit board, and the PCB circuit board is provided with copper strip conductors to expand the current to meet the needs of large currents. The heat dissipation method of the MOS tube is to dissipate heat from the MOS tube The metal substrate is screwed to the heat sink (e.g. figure 2 On the aluminum alloy plate in the middle), the heat dissipation metal substrate itself and the heat sink are insulated, such as add...

Claims

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Application Information

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IPC IPC(8): H02M7/00H01L23/367H01L23/40H01L23/495H05K1/02
Inventor 王洪波柳景弟李雪晖柯亨棋
Owner ZHEJIANG LERA NEW ENERGY POWER TECH CO LTD