CN210007637U

CN210007637U - driving circuit of DC electric equipment

Info

Publication number: CN210007637U
Application number: CN201921086382.9U
Authority: CN
Inventors: 陈小尘
Original assignee: DAWNSUN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: DAWNSUN ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-01-31
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses a kind of DC consumer's drive circuit, its simple structure easily realizes, the during operation, follows behind the forward conduction module on live wire L zero line N through controlled power supply connection module's voltage input flows in, flows out from controlled power supply connection module's second voltage input after the DC consumer, flows back to zero line N live wire L behind the negative voltage that gets into bridge rectifier module at last, forms power supply loop, at this in-process, accompanies control module is right controlled power supply connection module's switch-on/off control constitutes pulsation DC power supply circuit, is convenient for drive DC consumer's work and adjust its power as required, and it has shared bridge rectifier module, and manufacturing cost is lower, and the structure is novel, and the practicality is good.

Description

driving circuit of DC electric equipment

[ technical field ] A method for producing a semiconductor device

The utility model relates to a drive circuit of kinds of direct current consumer.

[ background of the invention ]

At present, the existing direct current electric equipment is mainly driven by a controllable constant current source and/or a controllable constant voltage source, and the structure is complex and the production cost is high.

Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by those skilled in the art.

[ Utility model ] content

The utility model overcomes above-mentioned technique is not enough, provides kinds of direct current consumer's drive circuit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A driving circuit of DC electric equipment, which comprises an AC input interface 1, a bridge rectifier module 2, a DC/DC module 3, a control module 4 and a controlled power supply connection module 5 controlled by the control module 4 and used for being connected with the DC electric equipment, wherein the th connection end of the AC input interface 1 is electrically connected with the th voltage input end of the controlled power supply connection module 5 through a forward conduction module 6, the second connection end of the AC input interface 1 is electrically connected with the th voltage input end of the controlled power supply connection module 5 through a second forward conduction module 7, and the second voltage input end of the controlled power supply connection module 5 is electrically connected with the negative voltage output end of the bridge rectifier module 2.

In the driving circuits for dc electric devices, the forward conducting module 6 includes a diode D1 connected in series in the forward direction between the th connection terminal of the ac power input interface 1 and the th voltage input terminal of the controlled power supply connection module 5, and the second forward conducting module 7 includes a diode D2 connected in series in the forward direction between the second connection terminal of the ac power input interface 1 and the th voltage input terminal of the controlled power supply connection module 5.

In the driving circuits of the dc electric devices, the bridge rectifier module 2 includes a rectifier bridge BR and a polar capacitor C1 connected in parallel between a positive voltage output terminal and a negative voltage output terminal of the rectifier bridge BR.

The driving circuits of the dc electric devices as described above, wherein the controlled power supply connection module 5 includes a dc electric device connection interface 51 for connecting with the dc electric device and a controlled switch module 52 for on-off control, a connection end of the dc electric device connection interface 51 is electrically connected to a connection end of the controlled switch module 52, another connection end of the dc electric device connection interface 51 is used as a voltage input end of the controlled power supply connection module 5, another connection end of the controlled switch module 52 is used as another voltage input end of the controlled power supply connection module 5, and a switch control signal input end of the controlled switch module 52 is electrically connected to a switch control signal output end of the control module 4.

As described above for the driving circuits of DC devices, the controlled switch module 52 includes an inductor L1, an N-type MOS transistor Q2, a resistor ER, a capacitor C1, a resistor R1, a resistor R2, and an NPN transistor Q1, wherein a terminal of the inductor L1 is electrically connected to a connecting terminal of the DC device connection interface 51, a terminal of the inductor L1 and another terminal are electrically connected to a terminal of the resistor ER and a voltage detection signal input terminal of the control module 4 through an N-type MOS transistor Q2, a terminal G of the N-type MOS transistor Q2 is electrically connected to a terminal of the resistor R2 , a terminal of the capacitor C1 , a terminal of the resistor R1 , and a collector of the NPN transistor Q1 , a terminal of the resistor R1 is electrically connected to a DC output voltage VCC of the DC/DC module 3, a terminal of the resistor ER 1 is electrically connected to a terminal of the capacitor C1 , a terminal of the resistor R1 and another terminal 1 , and another terminal of the emitter of the NPN transistor Q6372, and the control signal input terminal of the NPN transistor Q364 is electrically connected to the control signal input.

According to the driving circuits of the dc consumers, the dc consumers connected to the output end of the controlled power supply connection module 5 are lamp loads or dc motors.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the scheme is simple and easy to realize in structure, the arrangement of the bridge rectifier module is convenient for alternating current-direct current conversion of alternating current input by an alternating current input interface so as to output direct current to the DC/DC module, and the direct current is supplied to the control module after the DC/DC conversion, and the positive direction conduction module, the second positive direction conduction module and the controlled power supply connection module are arranged, when the power supply circuit works, electricity on a live wire L/zero line N flows in from the voltage input end of the controlled power supply connection module after flowing through the positive direction conduction module, flows out from the second voltage input end of the controlled power supply connection module after passing through a direct current electric device, and finally flows back to the zero line N/live wire L after entering the negative voltage of the bridge rectifier module to form a power supply loop.

2. The forward direction conduction module adopts diode D1 and the second forward direction conduction module adopts diode D2, and the implementation is convenient and simple, and low in production cost is favorable to making the current all follow on live wire L/zero line N the voltage input end of controlled power supply connection module flows in to carry out DC power supply to the direct current consumer.

3. The direct current electric equipment connecting interface is connected with the controlled switch module in series, so that the control module can conveniently control the direct current electric equipment to be switched on or switched off through the controlled switch module, and the direct current electric equipment connecting interface is convenient to implement.

4. The specific implementation circuit of the controlled switch module is convenient for the control module to control the turn-off/turn-on of the N-type MOS transistor Q2 by outputting high/low level signals, so that the on/off of current is controlled, the control is convenient, and in addition, the control module detects the voltage at two ends of the resistor ER, so that the magnitude of the flowing current is known, and the overcurrent protection control is convenient.

[ description of the drawings ]

Fig. 1 is a circuit diagram of the present case.

[ detailed description ] embodiments

The features of the present invention and other related features are further illustrated in detail below by way of example to facilitate understanding by those skilled in the art:

as shown in fig. 1, driving circuits for DC electric devices include an ac input interface 1, a bridge rectifier module 2, a DC/DC module 3, a control module 4, and a controlled power supply connection module 5 controlled by the control module 4 and connected to the DC electric devices sequentially, wherein a connection end of the ac input interface 1 is electrically connected to a voltage input end of the controlled power supply connection module 5 through a forward conduction module 6, a second connection end of the ac input interface 1 is electrically connected to a voltage input end of the controlled power supply connection module 5 through a second forward conduction module 7, and a second voltage input end of the controlled power supply connection module 5 is electrically connected to a negative voltage output end of the bridge rectifier module 2.

The structure of the scheme is simple and easy to realize, the arrangement of the bridge rectifier module 2 is convenient for alternating current-direct current conversion of alternating current input by the alternating current input interface 1 to output direct current to the DC/DC module 3, so that the direct current is supplied to the control module 4 after the DC/DC conversion, and the positive direction conduction module 6, the second positive direction conduction module 7 and the controlled power supply connection module 5 are arranged, when the power supply circuit works, electricity on a live wire L/zero line N flows in from the voltage input end of the controlled power supply connection module 5 after flowing through the positive direction conduction module 6, flows out from the second voltage input end of the controlled power supply connection module 5 after passing through a direct current electric device, and finally flows back to the zero line N/live wire L after entering the negative electrode voltage of the bridge rectifier module 2 to form a power supply loop, in the process, along with the connection/disconnection control of the controlled power supply connection module 5 by the control module 4, a pulsating direct current power supply circuit is formed, the work of the direct current electric device is convenient to drive and the power of the direct current electric device is adjusted according to needs, the bridge rectifier module 2 is low in manufacturing cost.

As described above, in practical implementation, the th forward conducting module 6 includes the diode D1 connected in series in the forward direction between the th connection terminal of the ac power input interface 1 and the th voltage input terminal of the controlled power supply connection module 5, and the second forward conducting module 7 includes the diode D2 connected in series in the forward direction between the second connection terminal of the ac power input interface 1 and the th voltage input terminal of the controlled power supply connection module 5.

As described above, the diode D1 is used as the forward conduction module 6, and the diode D2 is used as the second forward conduction module 7, so that the implementation is convenient and simple, the production cost is low, and it is beneficial to make the current on the live line L/neutral line N flow from the voltage input end of the controlled power supply connection module 5, so as to supply dc power to the dc electric equipment.

As described above, in practical implementation, the bridge rectifier module 2 includes the rectifier bridge BR and the polar capacitor C1 connected in parallel between the positive voltage output terminal and the negative voltage output terminal of the rectifier bridge BR, so as to facilitate rectification and voltage stabilization.

As described above, in a specific implementation, the controlled power supply connection module 5 includes a dc power device connection interface 51 for connecting to a dc power device and a controlled switch module 52 for controlling on/off, the connection end of the dc power device connection interface 51 is electrically connected to the connection end of the controlled switch module 52, the other connection end of the dc power device connection interface 51 is used as the voltage input end of the controlled power supply connection module 5, the other connection end of the controlled switch module 52 is used as the other voltage input end of the controlled power supply connection module 5, and the switch control signal input end of the controlled switch module 52 is electrically connected to the switch control signal output end of the control module 4.

As described above, in the present application, the dc electrical device connection interface 51 and the controlled switch module 52 are connected in series, so that the control module 4 can conveniently perform on-off control on the dc electrical device through the controlled switch module 52, and the implementation is convenient.

As described above, in a specific implementation, the controlled switch module 52 includes an inductor L1, an N-type MOS transistor Q2, a resistor ER, a capacitor C1, a resistor R1, a resistor R2, and an NPN transistor Q1, wherein an end of the inductor L1 is electrically connected to the connection end of the DC power device connection interface 51, an end of the inductor L5928 is electrically connected to the end of the resistor ER and the voltage detection signal input end of the control module 4 through an N-type MOS transistor Q2, an end of the N-type MOS transistor Q2 is electrically connected to the end of the resistor R2 , the end of the capacitor C1 , the end of the resistor R1 , and the collector of the NPN transistor Q1, an end of the resistor R2 is electrically connected to the DC output voltage VCC of the DC/DC module 3, an end of the resistor ER is electrically connected to the end of the capacitor C , an end of the resistor R is electrically connected to the emitter of the NPN transistor Q , and a base of the NPN transistor Q is electrically connected to the control signal input end of the NPN switch control module 51.

As described above, the specific implementation circuit of the controlled switch module 52 of the present disclosure facilitates the control module 4 to control the on/off of the N-type MOS transistor Q2 by outputting a high/low level signal, so as to control the on/off of the current, and further, the control module 4 detects the voltage across the resistor ER, so as to know the magnitude of the flowing current, so as to facilitate the over-current protection control.

As described above, in practical implementation, the dc power device connected to the output terminal of the controlled power supply connection module 5 is a lamp load or a dc motor.

As described above, the present disclosure protects a driver circuit of dc electric devices, and all technical solutions that have the same or similar structure to the present disclosure should be considered to fall within the protection scope of the present disclosure.

Claims

The driving circuit of DC electric equipment is characterized by comprising an AC input interface (1) electrically connected with a sequential order, a bridge rectifier module (2), a DC/DC module (3), a control module (4) and a controlled power supply connection module (5) controlled by the control module (4) and used for being connected with the DC electric equipment, wherein a connection end of the AC input interface (1) is electrically connected with a voltage input end of the controlled power supply connection module (5) through a forward conduction module (6), a second connection end of the AC input interface (1) is electrically connected with a voltage input end of the controlled power supply connection module (5) through a second forward conduction module (7), and a second voltage input end of the controlled power supply connection module (5) is electrically connected with a negative electrode voltage output end of the bridge rectifier module (2).
2. driver circuit of DC consumers according to claim 1, characterized in that, the forward conducting module (6) includes a diode D1 connected in series between the connection of the AC input interface (1) and the voltage input of the controlled power supply connection module (5), and the second forward conducting module (7) includes a diode D2 connected in series between the second connection of the AC input interface (1) and the voltage input of the controlled power supply connection module (5).
3. The DC consumer driving circuit according to claim 1, wherein the bridge rectifier module (2) comprises a rectifier bridge BR and a polarity capacitor C1 connected in parallel between the positive voltage output terminal and the negative voltage output terminal of the rectifier bridge BR.
4. The driver circuit of DC consumers according to claim 1, wherein the controlled power supply connection module (5) includes a DC consumer connection interface (51) for connecting with a DC consumer and a controlled switch module (52) for on-off control, the connection end of the DC consumer connection interface (51) is electrically connected to the connection end of the controlled switch module (52), the other connection end of the DC consumer connection interface (51) serves as the voltage input end of the controlled power supply connection module (5), the other connection end of the controlled switch module (52) serves as the other voltage input end of the controlled power supply connection module (5), and the switch control signal input end of the controlled switch module (52) is electrically connected to the switch control signal output end of the control module (4).
5. The driving circuit for kinds of direct current electric devices according to claim 4, wherein the controlled switching module (52) includes an inductor L1, an N-type MOS transistor Q2, a resistor ER, a capacitor C1, a resistor R1, a resistor R2, and an NPN transistor Q1, wherein a terminal of the inductor L1 is electrically connected to a connecting terminal 0 of the direct current electric device connection interface (51), a terminal of an inductor L1 and another terminal is electrically connected to a terminal of the resistor ER and a voltage detection signal input terminal of the control module (4) through an N-type MOS transistor Q2, a terminal G of the N-type MOS transistor Q2 is electrically connected to a terminal R2 , a terminal C1 , a terminal R1 and a collector of the NPN transistor Q1 , a terminal R1 and another terminal 1 are electrically connected to the direct current output voltage VCC of the DC/DC module (3), a terminal of the resistor ER 1 is electrically connected to a terminal C1 , a terminal R72 and another terminal 1 of the NPN transistor Q6372 are electrically connected to a base of the control signal input terminal (364).
6. The DC power supply driving circuit according to any of claims 1-5 and , wherein the DC power supply connected to the output terminal of the controlled power supply connection module (5) is a lamp load or a DC motor.