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Brushless DC motor for air-conditioner of vehicle

A brushed DC motor, automotive air conditioner technology, applied in electrical components, electromechanical devices, electronic commutators, etc., can solve problems such as sparks, high noise, and interference life.

Inactive Publication Date: 2006-11-29
林悦祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In China, the existing automobile air conditioners are all made of brushed DC motors. Since brushed DC motors use brushes to commutate mechanically, there is relative mechanical friction, which brings noise, sparks, Fatal shortcomings such as radio interference and short life

Method used

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  • Brushless DC motor for air-conditioner of vehicle
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  • Brushless DC motor for air-conditioner of vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 Shown is a schematic structural diagram of the brushless DC motor body. Among them, 1 is the bearing, 2 is the end cover, 3 is the casing, 4 is the permanent magnet rotor, 5 is the air gap, 6 is the stator, 7 is the winding, 8 is the Hall position sensor assembly, 9 is the sensor lead wire, 10 is the Motor lead-out line, 11 is main shaft.

[0025] For the structure of DC27V brushless DC evaporating fan for medium and large vehicles, see image 3 , by the volute 12, motor 13, fixed clip 14, set screw 15, lead plug 16, position sensor, electronic switch circuit 17, radiator 18 and so on.

[0026] As shown in Figure 4, it is a schematic diagram of the structure of a DC27V brushless DC condensing fan. The condensing fan is composed of a fan blade 19, a motor 20, a motor lead wire 21, a sensor, a sensor lead wire 22, an input lead wire 23 connected to the motor lead wire, and a sensor lead wire. Input lead wire 24, electronic switch circuit 25, radiator 2...

Embodiment 2

[0033] The DC27 (or 24V) brushless DC motor suitable for large and medium-sized vehicles of the present invention can be controlled by a half-control circuit in addition to the full-control circuit described in Embodiment 1. The full-control circuit has better performance and higher efficiency; However, the cost of the semi-controlled circuit is slightly lower, and its specific circuit diagram is as follows: Figure 5 Shown:

[0034] Sensor: mainly composed of Hall position sensors H1, H2, H3, resistors R1, R2, R3, capacitors C1, C2, C3, etc. When the motor rotor magnetic field passes through the Hall element, the Hall 3 pin will output a trigger signal , so the position of the rotor magnet relative to the stator can be detected according to the waveform signals output by Hall H1, H2, H3, so as to control the electrification of the stator winding accordingly.

[0035] Electronic switch circuit board: integrated with inverter IC1 (4069 six inverters), four-input NAND gate IC2 ...

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Abstract

A brushless DC motor for air conditioner of automobile is composed of main body, electronic switch circuit and position sensors (Hall elements). When magnetic field of rotor passes through the Hall element, a trigger signal is output to electronic switch circuit to determine the relative position between rotor and stator, so controlling the order of turning on the stator windings. A timing circuit is contained in said electronic switch circuit for over voltage protection. Its advantages are simple structure, high efficiency and speed regulating performance, and no loss of excitation.

Description

technical field [0001] The invention relates to the application of a brushless DC motor in an automobile air conditioner. Background technique [0002] In China, the existing automobile air conditioners are all made of brushed DC motors. Since brushed DC motors use brushes to commutate mechanically, there is relative mechanical friction, which brings noise, sparks, Fatal shortcomings such as radio interference and short life. Contents of the invention [0003] Aiming at the disadvantages of the above-mentioned conventional brushed motor, the present invention provides a brushless DC motor for automobile air conditioner. It not only has a series of advantages such as simple structure, reliable operation, and convenient maintenance of AC motors, but also has many advantages such as high operating efficiency, no excitation loss and speed regulation performance of DC motors. [0004] The brushless DC motor for automobile air conditioner of the present invention is composed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/08H02P6/14H02P6/16
Inventor 林悦祥
Owner 林悦祥
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