Delay control circuit of DC motor

A time-delay control, DC motor technology, applied in the direction of DC motor speed/torque control, electronic commutation motor control, single motor speed/torque control, etc., can solve the problems of complex control circuit, inconvenient use, and increased cost , to achieve the effect of simple control circuit, cost reduction and equipment safety protection

Active Publication Date: 2015-04-08
GUANGZHOU QIHU IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing delay control circuit is basically an external delay control circuit, which controls the delay work of the motor through a time relay. Its premise is that there must be an external power supply and an e

Method used

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  • Delay control circuit of DC motor
  • Delay control circuit of DC motor
  • Delay control circuit of DC motor

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Example Embodiment

[0026] Such as Figure 1 to Figure 7 As shown, the delay control circuit of the DC motor of the present invention includes a drive power module that converts AC to DC, a battery charging and discharging module, a motor drive module, and a control module MCU, where:

[0027] Such as figure 2 As shown, the drive power module of this embodiment includes: input 220V alternating current from L / N through fuse F1, capacitors C1, C2, inductor L2, diodes D1, D2, D3, and D5 to obtain DC voltage through rectification and filtering. ZD1, D4, D7, R1, R2, R4, R5, R6, R7, R8, R9, R10, R11, R12, C3, C5, C6 and Q1, Q2 form a switching power supply self-excited oscillation circuit, in the circuit through a transistor The on state and off state of Q1 and Q2 control the voltage of 1 / 3 of the front stage of the transformer T1. A step-down rectifier filter circuit composed of the secondary 7 / 8 feet of the transformer T1, diodes D9, D10, capacitors C4, C8, C9, C10, inductor L3 and resistors R3, R13, ...

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Abstract

The invention discloses a delay control circuit of a DC motor. The delay control circuit of the DC motor comprises a driving power module, a battery charging-discharging module, a motor driving module and a control module MCU; the driving power module is used for converting AC into a DC power supply which is regulated down and stabilized to be 12V; the battery charging-discharging module capable of charging and discharging a battery comprises a charging circuit, and a delay discharging circuit controlled through the MCU, and the battery charging-discharging module discharges to supply power to the motor driving module; the motor riving module is used for controlling a three-phase motor to work; the three-phase motor is controlled through six signals of the MCU, wherein the six control circuits are supplied by an internal circuit of the MCU. The delay control circuit of the DC motor has the function of charging and discharging the battery, so that the motor delaying work can be done without an external power supply, and the motor delaying work can be achieved even after the external power supply is switched off; therefore, devices can be effectively cooled to ensure the safety; the delay control circuit is simple, the energy consumption is low, so that the cost is effectively decreased, and a user can use conveniently.

Description

technical field [0001] The invention relates to a control circuit, in particular to a delay control circuit of a DC motor. Background technique [0002] The existing delay control circuit is basically an external delay control circuit, which controls the delay work of the motor through a time relay. Its premise is that there must be an external power supply and an external delay control circuit working at the same time. The circuit is relatively complex, and the volume is large, the energy consumption is high, the relative cost is increased, and it is not convenient for users to use. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a delay control circuit for a DC motor that has low energy consumption and can realize delay operation without external power supply. [0004] In order to achieve the above object, the technical solution adopted in the present invention is: a delay con...

Claims

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Application Information

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IPC IPC(8): H02P6/00H02P6/08H02P6/22
CPCH02P7/00
Inventor 胡虎
Owner GUANGZHOU QIHU IND CO LTD
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