CN-224217310-U - Energy-saving electromagnet driving control circuit

CN224217310UCN 224217310 UCN224217310 UCN 224217310UCN-224217310-U

Abstract

The application relates to the technical field of power electronics and discloses an energy-saving electromagnet drive control circuit which comprises a CPU control module, a control output module, a mains supply zero crossing point detection module, a CPU control module, a control driving module and a control output module, wherein the power supply module is used for supplying power to the CPU control module and the control output module, the mains supply zero crossing point detection module is used for detecting a zero crossing signal of mains supply, the CPU control module is used for outputting a control driving electromagnet working signal or a stop signal according to a received key signal, the control driving module is used for waiting for the zero crossing signal after the corresponding control signal is output to the control output module so as to drive the electromagnet, the control output module is used for waiting for the mains supply zero crossing signal after receiving the working signal or the stop signal, and then outputting the control signal to the control output module so as to drive the electromagnet to work and stop, and when the mains supply zero crossing is zero, the control on-off of the electromagnet can avoid current impact generated when the mains supply is zero crossing, energy loss of the electromagnet is reduced when the electromagnet is started and stopped, and the energy-saving effect is improved.

Inventors

ZHENG HUAAN
ZHANG DAIYUN
ZHOU LEMING
Zheng Hanting
WENG ZHENGGUO
SHAO TIANYOU

Assignees

宁波市华谦科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250406

Claims (8)

1. The energy-saving electromagnet driving control circuit is characterized by comprising a working power supply module, a mains supply zero crossing detection module, a CPU control module, a control driving module and a control output module which are connected in a coupling mode: the working power supply module is used for supplying power to the CPU control module and the control output module; the mains supply zero-crossing detection unit is used for detecting a zero-crossing signal of the mains supply; The CPU control module is used for outputting a control driving electromagnet working signal or a stop signal according to the received key signal; the control driving module is used for waiting for a zero crossing signal after receiving a working signal or a stopping signal of the CPU control module and outputting a corresponding control signal to the control output module so as to drive the electromagnet; And the control output module is used for driving the electromagnet to work or stop after receiving the control signal.
2. The energy-saving electromagnet drive control circuit according to claim 1, wherein the operating power supply module comprises a fuse F1, a transformer B1, a full-bridge Q1 unit, a filter capacitor C1, a filter capacitor C2, and a voltage stabilizing integrated block U1: The commercial power is connected with the fuse F1 and the primary side of the transformer B1, and the secondary side of the transformer B1 is connected with the full-bridge Q1 unit; The input end of the voltage stabilizing integrated block U1 and one end of the filter capacitor C1 are connected with the high-voltage output end of the full-bridge Q1 unit, the output end of the voltage stabilizing integrated block U1 is connected with one end of the filter capacitor C2, and the other ends of the filter capacitor C2 and the filter capacitor C1 are connected with the low-voltage output end of the full-bridge Q1 unit.
3. The energy-saving electromagnet drive control circuit according to claim 2, wherein the mains zero-crossing detection unit comprises a diode D4, a resistor R5, a transistor BG2, and a resistor R4; the output end of the working power supply module is connected with one end of the resistor R4, and the connection part is coupled with a 5V voltage source; The anode of the diode D4 is connected with the secondary side of the transformer B1, the cathode of the diode D4 is connected with one end of the resistor R5, and the other end of the resistor R5 is connected with the base electrode of the triode BG 2; The other end of the resistor R4 is connected with the detection end of the CPU control module through a connection point of the collector electrode of the triode BG2, and the emitter electrode of the triode BG2 is connected with the grounding end of the CPU control module.
4. The energy-saving electromagnet drive control circuit according to claim 1, wherein the CPU control module comprises a CPU chip, a work key S1, and a stop key S2; One ends of the working key S1 and the stopping key S2 are connected and then grounded, the other ends of the working key S1 and the stopping key S2 are respectively connected with the input end of the CPU chip, and the output end of the CPU chip is connected with the control driving module and the control output module.
5. The energy-saving electromagnet drive control circuit of claim 1, wherein the control drive module comprises an operation control drive unit and a stop control drive unit; The working control driving unit comprises a diode D2, a resistor R1 and an optocoupler OPT1, wherein the coupling control input end of the optocoupler OPT1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the cathode of the diode D2, and the coupling control output end of the optocoupler OPT1 is connected with the control output module; the stop control driving unit comprises a diode D3, a resistor R2 and an optocoupler OPT2, wherein the coupling control input end of the optocoupler OPT2 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with the cathode of the diode D3, and the coupling control output end of the optocoupler OPT2 is connected with the control output module; And anodes of the optocoupler OPT1 and the optocoupler OPT2 are coupled with a 5V voltage source, and a cathode is connected with the CPU control module.
6. The energy-saving electromagnet drive control circuit of claim 1, wherein the control output module comprises a preliminary circuit and a control circuit and an electromagnet, a double-contact relay K1 is coupled with the control output module, and the control circuit is connected with the electromagnet; The preparation circuit comprises a double-contact relay K1, a follow current diode D1, a triode BG1 and a resistor R3, wherein the CPU control module is connected with one end of the resistor R3, the other end of the resistor R3 is connected with a base electrode of the triode BG1, an emitting electrode of the triode BG1 is grounded, a collecting electrode is connected with an anode of the follow current diode D1 and one end of an electromagnetic winding of the double-contact relay K1, and the other end of the electromagnetic winding of the double-contact relay K1 and a cathode of the follow current diode D1 are connected with Vcc voltage.
7. The energy-saving electromagnet drive control circuit of claim 6, wherein the control circuit comprises a unidirectional silicon controlled rectifier T1, a unidirectional silicon controlled rectifier T2, a resistor R6, and a capacitor C3; the anode of the unidirectional silicon controlled rectifier T1 is connected with the cathode of the unidirectional silicon controlled rectifier T2, and the cathode of the unidirectional silicon controlled rectifier T1 is connected with the anode of the unidirectional silicon controlled rectifier T2; One end of the resistor R6 is connected with the anode of the unidirectional silicon controlled rectifier T1, the other end of the resistor R6 is connected with one end of the capacitor C3, the other end of the capacitor C3 is connected with the cathode of the unidirectional silicon controlled rectifier T1 and one end of the electromagnet, and the other end of the electromagnet and the anode of the unidirectional silicon controlled rectifier T1 are connected with the controlled switch of the double-contact relay K1.
8. The energy efficient electromagnet drive control circuit according to claim 6, wherein the electromagnet is made of hard magnetic material.

Description

Energy-saving electromagnet driving control circuit Technical Field The application relates to the technical field of power electronics, in particular to an energy-saving electromagnet driving control circuit. Background The electromagnet is a device for generating electromagnetic by electrifying, a conductive coil matched with the power of the electromagnet is wound outside the iron core, and after current is introduced into the conductive coil, the coil has magnetism like a magnet. Electromagnets are used in a very wide range of everyday life, such as electromagnetic cranes, electromagnetic relays, bells, magnetic levitation trains, etc., and conventional dc electromagnet drive techniques are typically implemented by mechanical contact switches or semiconductor switches. The working process of the direct current electromagnet comprises that after the direct current electromagnet is electrified, exciting current of a coil rises according to an exponential curve, a magnetic circuit comprising an armature is magnetized, an established magnetic field exerts attractive force on the armature, and finally the armature is attracted in place, and the magnetic circuit is closed. After the magnetic circuit is closed, the magnetic resistance is extremely small, enough magnetic flux can be generated only by extremely small current to maintain the closing of the armature, the working process of the alternating current electromagnet is more complex, the current change is larger, and the coil and the iron core can generate heat due to eddy current and hysteresis loss. Common electromagnet applications have electromagnetic lifting appliance, door control lock etc., and they need continuous power supply when working, consume a large amount of energy, how accurate and energy-conserving driven direct current electromagnet is the technical problem that needs to solve. Disclosure of Invention In order to obtain an electromagnet which can be controlled more accurately and has better energy-saving effect, the application provides an energy-saving electromagnet driving control circuit, which adopts the following technical scheme: The energy-saving electromagnet driving control circuit comprises a working power supply module, a mains supply zero crossing detection module, a CPU control module, a control driving module and a control output module which are connected in a coupling mode: the working power supply module is used for supplying power to the CPU control module and the control output module; the mains supply zero-crossing detection unit is used for detecting a zero-crossing signal of the mains supply; The CPU control module is used for outputting a control driving electromagnet working signal or a stop signal according to the received key signal; the control driving module is used for waiting for a zero crossing signal after receiving a working signal or a stopping signal of the CPU control module and outputting a corresponding control signal to the control output module so as to drive the electromagnet; And the control output module is used for driving the electromagnet to work or stop after receiving the control signal. Optionally, the working power supply module includes a fuse F1, a transformer B1, a full bridge Q1 unit, a filter capacitor C1, a filter capacitor C2, and a voltage stabilizing integrated block U1: The commercial power is connected with the fuse F1 and the primary side of the transformer B1, and the secondary side of the transformer B1 is connected with the full-bridge Q1 unit; The input end of the voltage stabilizing integrated block U1 and one end of the filter capacitor C1 are connected with the high-voltage output end of the full-bridge Q1 unit, the output end of the voltage stabilizing integrated block U1 is connected with one end of the filter capacitor C2, and the other ends of the filter capacitor C2 and the filter capacitor C1 are connected with the low-voltage output end of the full-bridge Q1 unit. Optionally, the mains supply zero crossing detection unit comprises a diode D4, a resistor R5, a triode BG2 and a resistor R4; the output end of the working power supply module is connected with one end of the resistor R4, and the connection part is coupled with a 5V voltage source; The anode of the diode D4 is connected with the secondary side of the transformer B1, the cathode of the diode D4 is connected with one end of the resistor R5, and the other end of the resistor R5 is connected with the base electrode of the triode BG 2; The other end of the resistor R4 is connected with the detection end of the CPU control module through a connection point of the collector electrode of the triode BG2, and the emitter electrode of the triode BG2 is connected with the grounding end of the CPU control module. Optionally, the CPU control module includes a CPU chip, a work key S1 and a stop key S2; One ends of the working key S1 and the stopping key S2 are connected and then grounded, the other ends of the work