CN2893904Y - Energy-saving relay drive circuit device - Google Patents
Energy-saving relay drive circuit device Download PDFInfo
- Publication number
- CN2893904Y CN2893904Y CN 200520119918 CN200520119918U CN2893904Y CN 2893904 Y CN2893904 Y CN 2893904Y CN 200520119918 CN200520119918 CN 200520119918 CN 200520119918 U CN200520119918 U CN 200520119918U CN 2893904 Y CN2893904 Y CN 2893904Y
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Abstract
The utility model discloses a drive circuit of energy-economized relay, which is characterized in that a voltage conversion module (U1), voltage regulation module and a feedback circuit are additionally arranged between the relay power supply and the relay. The voltage regulation module and the voltage conversion module which compares the reference voltage in the voltage conversion module with the feedback voltage in the feedback circuit jointly control the conduction voltage value of the relay to lower the voltage of the relay in stable conduction than the voltage in the initial conduction. The utility model eliminates the disadvantages of the prior art in normal operation condition of high energy consumption of the system and short service life of the relay.
Description
Technical field
The utility model relates to the Equipment Control field, refers to a kind of energy-saving relay driving circuit device especially.
Background technology
Relay can be controlled the forceful electric power signal by weak electric signal by the less bigger buffer circuit of drive current control by the weak electric signal control switch, therefore uses in a large number in a lot of control fields.Because relay can have less contact resistance at switch off state open circuit preferably at the switch attracting state, distorted signals is less, therefore applies to handshaking, communication channel protection etc. in communication field in a large number.
Prior art is generally taken the scheme of control relay break-make as shown in Figure 1.Its operation principle: when control signal is low level, relay control coil two ends no-voltage, the relay attonity keeps disconnecting; When control signal was high level, relay J is elementary electric current, makes actuating of relay adhesive; When control signal keeps high level, the elementary electric current of keeping of relay, relay keeps attracting state.In existing scheme, because it is the same with pick-up voltage big to keep voltage, be in when keeping state at relay, the energy that the consumption of relay primary coil is bigger, heating is aging easily, influences the useful life of relay.If the relay quantity of system is big, bring very big hidden danger can for system maintenance and heat radiation.Simultaneously, existing scheme power consumption height, system's use cost height.
Summary of the invention
The utility model discloses a kind of energy-saving relay driving circuit device, in order to solve prior art when normally using relay, system's power consumption is high, relay short problem in useful life.
The utility model provides a kind of energy-saving relay driving circuit device, and this drives device has increased voltage transformation module (U1), voltage regulator module and feedback circuit (A1) between relay power supply and relay.
The power input of described voltage transformation module (VCC) links to each other with power supply, the output of described voltage transformation module (VO) links to each other with the first input end of the input of described voltage regulator module, described feedback circuit (A1), and the feedback input end of described voltage transformation module (VF) links to each other with the output of described feedback circuit (A1); Second input of described feedback circuit (A1) links to each other with the output (VJ) of described voltage regulator module; Described voltage regulator module also comprises signal input end;
Described voltage transformation module passes through the size of the reference voltage and the voltage that described feedback circuit (A1) output is exported of more described voltage transformation module inside, adjusts the output voltage (VOUT) of the output (VO) of described voltage transformation module then; Described output voltage (VOUT) and from the size of the common control relay conducting voltage of control signal of the signal input end of described voltage regulator module input makes the voltage of relay when stablizing conducting be lower than the voltage at conducting initial stage.
Described voltage regulator module and described voltage transformation module (U1) are integrated in a module.
Described feedback circuit (A1) is specially series-parallel feedback system of divider resistance.
Described feedback circuit (A1) is specially the feedback system of operational amplifier.
Described feedback circuit (A1) further comprises delay circuit; Described delay circuit is connected between relay and the described feedback circuit (A1).
The feedback system of described operational amplifier is specially positive negative feedback control circuit.
The output (VO) of the positive feedback termination voltage modular converter (U1) of described positive negative feedback control circuit, the output of the described voltage regulator module of negative feedback termination, positive negative feedback control circuit output links to each other with the feedback input end (VF) of voltage transformation module (U1).
Connect diode (D1) between the positive and negative feedback end of described positive negative feedback control circuit, the positive pole of described diode (D1) links to each other with the negative feedback end, and negative pole links to each other with the positive feedback end.
The beneficial effects of the utility model are as follows:
1, adopted one to feed back the step-down scheme simply and easily, solved the bigger problem of maintenance power consumption of relay, under the situation that satisfies the relay use, reduced the sustaining voltage of relay, the output stress of system power supply is improved, and system's hear rate reduces, and coil heating reduces, in the life-span that helps relay, enlarged the environment for use of system.
2, energy-saving effect can reach 90%, has more dissemination under the situation of current energy growing tension.
Description of drawings
Fig. 1 is the prior art principle schematic;
The energy-saving relay driving circuit device schematic diagram that Fig. 2 provides for the utility model;
Fig. 3 constitutes the specific embodiments schematic diagram of feedback circuit for what the utility model provided by three divider resistances;
The relay drive principle schematic diagram that adds delay circuit that Fig. 4 provides for the utility model;
A kind of specific embodiments schematic diagram of the delay circuit that Fig. 5 provides for the utility model;
The positive and negative FEEDBACK CONTROL time-delay relay drive principle schematic diagram that Fig. 6 provides for the utility model.
Embodiment
The core concept of the energy-saving relay driving circuit device that the utility model proposed: relay is by the effect of electromagnetic force, when having electric current to flow through, primary coil produces magnetic field, the magnetic material adhesive, the other end is because mechanical linkage is the switch sections contact, during adhesive because magnetic material distance is far away, and need mechanical work, therefore needing bigger electric current could adhesive.If continue after the adhesive to keep, only need less current to keep and get final product.Therefore, the present invention has designed a circuit arrangement, come control relay by between relay and power supply, increasing voltage transformation module, voltage regulator module and feedback circuit, make to allow relay that higher conducting initial stage voltage is arranged when relay needs conducting, can guarantee the effective conducting of relay this moment; After the relay conducting is stable, can reduce the conducting voltage of relay automatically.
Below in conjunction with specific embodiment the technical solution of the utility model is described.
The energy-saving relay driving circuit device schematic diagram that the utility model provides as shown in Figure 2.This energy-saving relay driving circuit device is made of voltage transformation module U1, filter capacitor C1, voltage regulator module switch oxide-semiconductor control transistors Q1, feedback circuit A1.
The power input VCC of voltage transformation module U1 links to each other with power supply, and voltage transformation module U1 converts the direct voltage VCC of input to direct voltage VOUT.The output VO of voltage transformation module U1 links to each other with the first input end of the input of described voltage regulator module, feedback circuit A1, and the feedback input end VF of voltage transformation module links to each other with the output of feedback circuit A1; Second input of feedback circuit A1 links to each other with the output VJ of voltage regulator module; Voltage regulator module also comprises signal input end; Filter capacitor C1 links to each other with the output VO of voltage transformation module U1.
Under the situation that voltage regulator module Q1 pipe disconnects, the level of VJ end is a low level.
When control signal made the Q1 conducting, the level of VJ end and VOUT end was suitable, increased to this moment the feedback VF of U1.Because when VF controls voltage when big than the benchmark of voltage transformation module U1 inside, the output voltage VO UT of U1 can reduce, so when VF increased, output voltage VO UT can reduce.But because the voltage of C1 can not suddenly change, so VOUT provides output current by C1, so at the initial stage of Q1 conducting, the voltage of voltage regulation the when voltage that is loaded into relay J 1 coil is the Q1 conducting.Along with VOUT reduces gradually, behind output voltage and feedback voltage balance again, the voltage VOUT of output this moment has reached the purpose that reduces relay voltage when the long-term conducting of relay less than the voltage at conducting initial stage.
The specific embodiments schematic diagram that constitutes feedback circuit by three divider resistances that the utility model provides as shown in Figure 3.This programme is by a voltage transformation module U1, filter capacitor C1, voltage regulator module switch oxide-semiconductor control transistors Q1 and the feedback circuit that is made of feedback resistance R1, R2, R3.U1 converts the direct voltage VCC of input to direct voltage VOUT, and by feedback resistance R1, R2, the output of R3 feedback adjusting.Under the normal situation about using of U1, the feedback dividing potential drop of feedback input end VF is a stable voltage Vref, can obtain required voltage VOUT by adjusting feedback.Control signal is by the conducting (multiple transistor is arranged, do not give unnecessary details one by one) of level signal oxide-semiconductor control transistors Q1 of output herein, when transistor turns, and the control relay adhesive, when transistor disconnected, relay disconnected.
The equivalence of relay primary coil is a resistance r, and generally this resistance ratio is less.Under the situation that transistor disconnects, R3 is conducting to GND by relay r, and the resistance of a R3+r of equivalence this moment is to ground, and the equivalent resistance of establishing this moment is R3
*, the Voltage Feedback pin VF of U1 is by moving VOUT on the R1 to, by R2 and R3
*Parallel connection pulls down to GND, and under the situation of normal output feedback, the level of VF is Vref, that is:
VOUT＝(1+R1/(R2//R3
*))Vref (2)
This moment, the voltage VJ of relay was:
VJ＝(r/(r+R3))Vref (3)
In circuit is selected since choose resistance R 3＞＞r.That is:
VOUT≈(1+R1/R2//R3)Vref (4)
VJ≈0
At this moment, the voltage of relay is 0 substantially, and relay status is for disconnecting.This moment, capacitor C 1 had voltage VOUT.
Under the situation of transistor turns, at the initial stage of adhesive, because the voltage of capacitor C 1 can not transition, this moment, the voltage of relay was: VJ=VOUT, because VOUT can adjust and be provided with by parameter, we make the level of the VOUT of this moment by design is the specified operation voltage of relay, makes the actuating of relay and adhesive.
Because the R3 feedback resistance is connected the VF place, be higher than Vref by VF voltage after the dividing potential drop this moment, and this moment, the output current of U1 reduced, and relay is by the charging voltage power supply of capacitor C 1, and output voltage VO UT reduces gradually.By adjusting the capacity of capacitor C 1, the effective time in the time of can guaranteeing the actuating of relay, when VOUT dropped to new balanced voltage, the U1 output voltage remained burning voltage, and this moment, the branch pressure voltage of VF equaled Vref.
That is:
Illustrate choosing of parameter below:
In the relay circuit of design 6V, adopting Vref is the control circuit of 1.25V, chooses resistance R 3 and is 50K, and the U1 output voltage is 6V when relay does not move, and the burning voltage after the action is that 1.5V brings (4) into and (5) can get:
That is: R1=150K, R2=187.5K, the starting resistor that satisfies relay is 6V, the sustaining voltage after stable is 1.5V.In like manner, can choose on the relay that relevant parameter is used in different parameters according to top derivation.
As table 1, the primary coil resistance of 6V relay is 257 Europe, and the power loss after the adhesive is 0.14W, and the power loss when making stable sustaining voltage be 1.5V behind the circuit is: 0.0087W, have only original 1/16.If there is a large amount of relays to use (as a collection of actuating of relay is arranged simultaneously) in the system when order circuit is protected; if considering the efficient of U1 is 80%; a circuit that drives 100 relays simultaneously can reduce the loss of 13W; reduced by 90% relay coil energy loss, energy-saving effect is very obvious.
■COIL?DATA?CHART
The relay parameter list that table 1 is certain type
The relay drive principle schematic diagram that adds delay circuit that the utility model provides as shown in Figure 4.On the output VJ of voltage regulator module and feedback circuit, increase a delay circuit, its objective is when control signal allows the Q1 conducting, because this circuit has time delay, the VJ feedback initial stage is a low level, VF also is a low level, be lower than the reference voltage of U1 inside, so the output voltage VO UT of this moment is a high level.VF could feed back high level after time-delay after a while, can allow VOUT keep high level output at the Q1 pipe conducting initial stage like this, makes the contact of relay can more reliable adhesive.A kind of specific embodiments schematic diagram of this delay circuit as shown in Figure 5.The VJ end is connected with the base stage of triode Q2 by R4, R5 and capacitor C 2, has constituted delay circuit.The collector electrode of this triode Q2 is connected with the R3 in the feedback circuit, and this feedback circuit is made up of R1, R2, R3, and its operation principle such as Fig. 3 describe.The positive and negative FEEDBACK CONTROL time-delay relay drive principle schematic diagram that the utility model provides as shown in Figure 6.In circuit, A2 is positive negative-feedback circuit module, positive feedback termination output voltage VO UT, and the input that negative feedback termination Q1 links to each other with relay coil is suitably controlled the negative feedback ratio (as adopt electric resistance partial pressure mode) of the positive feedback ratio of VOUT greater than VJ.
Not during conducting, the level of VJ is the VOUT level at Q1, and after feedback processing, VOUT output has higher output voltage.When the Q1 conducting, VJ is a low level, behind A2, feedback voltage V F has higher voltage, reference voltage owing to the U1 that VF is higher than this moment, the output current VOUT voltage of U1 reduces, relay provides voltage by C1, and have higher conducting voltage because the voltage of capacitor C 1 can not suddenly change at the initial stage of powering on this moment, along with VOUT voltage descends, the feedback of A2 is also along with decline, and when the reference voltage of the feedback of VF and U1 was identical, the output of U1 reached balance again, the output voltage VO UT of U1 after this moment is stable is lower, has reached the purpose of long-time low voltage control after the relay adhesive.
Connect diode D1 between the positive-negative feedback end of positive negative feedback control circuit A2 among Fig. 6, the positive pole of this diode D1 links to each other with the negative feedback end, and negative pole links to each other with the positive feedback end.This diode D1 provides the release loop for the issuable induced electromotive force of relay coil.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1, a kind of energy-saving relay driving circuit device is characterized in that, has increased voltage transformation module (U1), voltage regulator module and feedback circuit (A1) between relay power supply and relay;
The power input of described voltage transformation module (VCC) links to each other with power supply, the output of described voltage transformation module (VO) links to each other with the first input end of the input of described voltage regulator module, described feedback circuit (A1), and the feedback input end of described voltage transformation module (VF) links to each other with the output of described feedback circuit (A1); Second input of described feedback circuit (A1) links to each other with the output (VJ) of described voltage regulator module; Described voltage regulator module also comprises signal input end;
Described voltage transformation module passes through the size of the reference voltage and the voltage that described feedback circuit (A1) output is exported of more described voltage transformation module inside, adjusts the output voltage (VOUT) of the output (VO) of described voltage transformation module then; Described output voltage (VOUT) and from the size of the common control relay conducting voltage of control signal of the signal input end of described voltage regulator module input makes the voltage of relay when stablizing conducting be lower than the voltage at conducting initial stage.
2, circuit arrangement as claimed in claim 1 is characterized in that, described voltage regulator module and described voltage transformation module (U1) are integrated in a module.
3, circuit arrangement as claimed in claim 1 is characterized in that, described feedback circuit (A1) is specially series-parallel feedback system of divider resistance.
4, circuit arrangement as claimed in claim 1 is characterized in that, described feedback circuit (A1) is specially the feedback system of operational amplifier.
5, circuit arrangement as claimed in claim 1 is characterized in that, described feedback circuit (A1) further comprises delay circuit; Described delay circuit is connected between relay and the described feedback circuit (A1).
6, circuit arrangement as claimed in claim 4 is characterized in that, the feedback system of described operational amplifier is specially positive negative feedback control circuit;
The output (VO) of the positive feedback termination voltage modular converter (U1) of described positive negative feedback control circuit, the output of the described voltage regulator module of negative feedback termination, positive negative feedback control circuit output links to each other with the feedback input end (VF) of voltage transformation module (U1).
7, circuit arrangement as claimed in claim 6 is characterized in that, connects diode (D1) between the positive and negative feedback end of described positive negative feedback control circuit, and the positive pole of described diode (D1) links to each other with the negative feedback end, and negative pole links to each other with the positive feedback end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119918 CN2893904Y (en) | 2005-12-01 | 2005-12-01 | Energy-saving relay drive circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119918 CN2893904Y (en) | 2005-12-01 | 2005-12-01 | Energy-saving relay drive circuit device |
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| Publication Number | Publication Date |
|---|---|
| CN2893904Y true CN2893904Y (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520119918 Expired - Fee Related CN2893904Y (en) | 2005-12-01 | 2005-12-01 | Energy-saving relay drive circuit device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184807A (en) * | 2011-04-11 | 2011-09-14 | 李锦恭 | Ultralow-power-consumption and high-efficiency electromagnet control circuit |
| CN102709117A (en) * | 2011-03-28 | 2012-10-03 | 上海西艾爱电子有限公司 | Energy-saving driving circuit for relay |
| CN101609127B (en) * | 2009-07-24 | 2012-12-05 | 美的集团有限公司 | Relay fault detection circuit |
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
| CN104218933A (en) * | 2014-08-14 | 2014-12-17 | 洛阳嘉盛电源科技有限公司 | Dual-drive relay protection circuit |
| CN104769697B (en) * | 2012-09-25 | 2017-07-21 | 松下知识产权经营株式会社 | Relay controller |
| CN112631362A (en) * | 2019-10-08 | 2021-04-09 | 法可特里亚股份有限公司 | Control system and control method for electromechanical contactor of power circuit |
-
2005
- 2005-12-01 CN CN 200520119918 patent/CN2893904Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609127B (en) * | 2009-07-24 | 2012-12-05 | 美的集团有限公司 | Relay fault detection circuit |
| CN102709117A (en) * | 2011-03-28 | 2012-10-03 | 上海西艾爱电子有限公司 | Energy-saving driving circuit for relay |
| CN102709117B (en) * | 2011-03-28 | 2014-10-08 | 上海西艾爱电子有限公司 | Energy-saving driving circuit for relay |
| CN102184807A (en) * | 2011-04-11 | 2011-09-14 | 李锦恭 | Ultralow-power-consumption and high-efficiency electromagnet control circuit |
| CN102184807B (en) * | 2011-04-11 | 2013-07-17 | 广州国保科技有限公司 | Ultralow-power-consumption and high-efficiency electromagnet control circuit |
| CN104769697B (en) * | 2012-09-25 | 2017-07-21 | 松下知识产权经营株式会社 | Relay controller |
| CN103198977A (en) * | 2013-03-29 | 2013-07-10 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuit |
| CN103198977B (en) * | 2013-03-29 | 2016-05-25 | 深圳市汇川技术股份有限公司 | Contactor coil power supply circuits |
| CN104218933A (en) * | 2014-08-14 | 2014-12-17 | 洛阳嘉盛电源科技有限公司 | Dual-drive relay protection circuit |
| CN112631362A (en) * | 2019-10-08 | 2021-04-09 | 法可特里亚股份有限公司 | Control system and control method for electromechanical contactor of power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUAWEI ANSETT ELECTRONICS CO., LTD., SHENZHEN CIT Free format text: FORMER OWNER: HUAWEI TECHNOLOGY CO., LTD. Effective date: 20081017 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081017 Address after: Building 2, B District, Bantian HUAWEI base, Longgang District, Guangdong, Shenzhen, 518129 Patentee after: Shenzhen Huawei Anjiexin Electrical Co., Ltd. Address before: Bantian HUAWEI headquarters office building, Longgang District, Guangdong City, Shenzhen Province, China: 518129 Patentee before: Huawei Technologies Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20111201 |