CN217788280U

CN217788280U - Relay energy-saving driving circuit

Info

Publication number: CN217788280U
Application number: CN202221507285.4U
Authority: CN
Inventors: 张云川
Original assignee: Chengdu Huiyun Creation Technology Co ltd
Current assignee: Chengdu Huiyun Creation Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-11-11
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to a new forms of energy technical field, especially an energy-conserving drive circuit of relay. Including first power, second switch and relay, first power, second switch and relay are in proper order to be connected in series and ground connection, form first return circuit, still include second power, diode and first switch, first switch series connection is between relay and ground, and the negative pole of diode is connected between second switch and relay, and the positive pole of diode is connected to the second power, and the second power is less than first power. After the relay is attracted, the first loop is cut off by disconnecting the second switch, and the attraction state of the relay is maintained only by adopting the small current of the second loop, so that the current of the relay attraction is maintained on the one hand, and on the other hand, the current of the relay attraction is maintained to be reduced, the power consumption of the relay in the attraction state is reduced, and the relay is energy-saving and environment-friendly.

Description

Relay energy-saving driving circuit

Technical Field

The utility model relates to a new forms of energy technical field, especially an energy-conserving drive circuit of relay.

Background

In the field of power management, a relay is used for controlling the on-off of a circuit, and the pull-in of the relay can be driven only by needing a large enough current. Fig. 1 shows a relay drive circuit, where K1 is a relay, K1 is a single-pole double-throw switch, and between

terminals

3 and 4 of K1 is an induction coil, and when the switch is switched to terminal 1, the relay is turned off; when the switch is switched to the 5 ends, the relay is closed. The terminal 3 of the relay K1 is connected to the direct-current voltage 12V through the switch S2, and the terminal 4 of the relay K1 is directly grounded. Under the circuit design, when the switch S2 is closed, a loop is formed between 12V direct current voltage, the induction coil between the

ends

3 and 4 of the K1 and the ground, current is generated and acts on the induction coil, so that the switch of the relay K1 is attracted from the end 1 to the end 5, the relay K1 is closed, a loop is formed between the 12V direct current voltage, the closed K1 and the ground, the current continuously flows through the loop, and if the equivalent impedance of the relay is R omega, the current is 12V/R omega all the time after the relay is attracted to be attracted.

Although the circuit can drive the relay to be closed, the circuit still has the problems that: the driving current required by the relay actuation is large, the current for maintaining the relay actuation state is small, generally, in the design of a power management circuit, an engineer does not consider the difference between the relay actuation driving current and the current for maintaining the relay to work, the relay actuation is driven by adopting a single current, once the relay is actuated, the current for maintaining the relay actuation is equal to the current for driving the relay actuation, the large current is still kept, and the problem of power consumption rise after the relay actuation is caused.

Disclosure of Invention

The invention of the utility model aims to: the current driving circuit driven by the relay is improved, and the energy-saving driving circuit of the relay is provided, so that after the relay is closed, the current for maintaining the relay to work is reduced through the conversion of the circuit, and the power consumption after the relay is attracted is reduced.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an energy-conserving drive circuit of relay, includes first power, second switch and relay, and first power, second switch and relay are in proper order to be connected in series and ground connection, form first return circuit, still includes second power, diode and first switch, first switch series connection is between relay and ground, and the negative pole of diode is connected between second switch and relay, and the positive pole of diode is connected to the second power, and the second power is less than first power.

As the utility model discloses an optimal scheme, the induced-current with the switch actuation through in the first return circuit is established ties in the both ends of induction coil on the relay and inserts the first return circuit.

As the preferred scheme of the utility model, the relay is single-pole double-throw switch.

As the utility model discloses a preferred scheme, the first power is 12V, and the second power is 5V or 3.3V.

As the utility model discloses a preferred scheme, the first power is 24V, and the second power is 12V, 5V or 3.3V.

As the utility model discloses a preferred scheme, the first power is 5V, and the second power is 3.3V.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses an among the energy-conserving drive circuit of relay, because the second power has been increased, diode and first switch, consequently, the second return circuit has been formed on the relay, in the actuation of drive relay, the electric current in first return circuit and second return circuit acts on the induction coil of relay simultaneously, the drive relay that heavy current can be fine is closed, after the relay actuation, through breaking off the second switch, cut off first return circuit, only adopt the undercurrent maintenance relay's in second return circuit actuation state, the electric current of relay actuation has been kept on the one hand, on the other hand, the electric current of maintaining the relay actuation diminishes, the consumption under the relay actuation state has been reduced, energy-concerving and environment-protective.

Drawings

Fig. 1 is a circuit diagram of a relay driving circuit in the background art;

fig. 2 is a diagram of an energy-saving relay driving circuit in embodiment 1 of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

A relay energy-saving driving circuit diagram is shown in figure 2, on the basis of the existing circuit connection relationship that a direct current voltage is 12V, a switch S2, a relay K1 and the ground are connected in series, the switch S1 is added between the relay K1 and the ground, the cathode of a diode is connected between the switch S2 and the relay K1, and the anode of the diode is connected with a voltage of 5V.

The advantage of design like this lies in, when needing relay K1 actuation, closed switch S1 and S2 simultaneously, then 12V voltage, form first return circuit between relay K1 and the ground, there is 12V/R omega 'S electric current on the first return circuit, 5V voltage simultaneously, also form the second return circuit between relay K1 and the ground, there is 5V/R omega' S electric current on the second return circuit, the electric current of first return circuit and second return circuit all flows through relay K1, consequently, there is 17V/R omega 'S electric current in relay K1' S induction coil department, induction coil makes the switch actuation to 5 ends, accomplish the relay actuation.

After the switching action of the relay actuation is completed, the switch S2 is switched off, then the first loop is switched off, only the second loop is reserved, and the current of the second loop is 5V/R omega, therefore, the current of the relay K1 in the actuation state is maintained, the current on the relay K1 is changed from 17V/R omega in the actuation state to 5V/R omega in the actuation state, the current is greatly reduced, and the actuation state of the relay K1 is maintained. The power consumption of the relay K1 after actuation is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an energy-conserving drive circuit of relay, includes first power, second switch and relay, first power, second switch and relay are in proper order to be connected in series and ground connection, form first return circuit, its characterized in that still includes second power, diode and first switch, first switch series connection is between relay and ground, and the negative pole of diode is connected between second switch and relay, and the positive pole of diode is connected to the second power, and the second power is less than first power.

2. The relay energy-saving driving circuit as claimed in claim 1, wherein two ends of the induction coil of the relay are connected in series to the first loop, and the switch is closed by the induced current in the first loop.

3. The relay power-saving driving circuit as claimed in claim 2, wherein the relay is a single-pole double-throw switch.

4. An energy-saving driving circuit for relay as claimed in claim 1, wherein the first power supply is 12V, and the second power supply is 5V or 3.3V.

5. An energy-saving driving circuit for relay as claimed in claim 1, wherein the first power supply is 24V, and the second power supply is 12V, 5V or 3.3V.

6. An energy-saving driving circuit for relay as claimed in claim 1, wherein the first power supply is 5V, and the second power supply is 3.3V.