CN210490839U - Relay is with higher speed and low-power consumption drive circuit - Google Patents
Relay is with higher speed and low-power consumption drive circuit Download PDFInfo
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- CN210490839U CN210490839U CN201921982052.8U CN201921982052U CN210490839U CN 210490839 U CN210490839 U CN 210490839U CN 201921982052 U CN201921982052 U CN 201921982052U CN 210490839 U CN210490839 U CN 210490839U
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Abstract
The utility model relates to a relay field indicates a relay is with higher speed and low-power consumption drive circuit especially, including signal input part, power input part, half press drive module, anodal signal output part, negative pole signal output part, triode Q1, triode Q2, field effect transistor Q3, field effect transistor Q4 and triode Q5. The relay acceleration and low power consumption driving circuit of the utility model can be used in a general relay driving module with low power consumption or two continuous actions in a short time, such as relay driving in a UPS charging and discharging module; the driving circuit makes up the defect that the acceleration function of the traditional relay driving circuit fails under certain working conditions, reduces the relay maintaining driving voltage, and can achieve the effects of energy conservation and high reliability.
Description
Technical Field
The utility model relates to a relay field indicates a relay is with higher speed and low-power consumption drive circuit especially.
Background
The traditional relay accelerating circuit can cause accelerating function failure when the relay acts for many times, and internal insulation failure of the relay caused by large overheating of coil power consumption in the use process in a high-temperature environment.
Disclosure of Invention
In order to solve the problem, the utility model provides a relay is with higher speed and low-power consumption drive circuit has compensatied the defect that traditional relay drive circuit function became invalid with higher speed under some operating modes.
In order to achieve the above object, the utility model adopts the following technical scheme: a relay acceleration and low power consumption driving circuit comprises a signal input end, a power input end, a half-voltage driving module, a positive electrode signal output end, a negative electrode signal output end, a triode Q1, a triode Q2, a field-effect tube Q3, a field-effect tube Q4 and a triode Q5, wherein the signal input end is electrically connected with the base electrode of a triode Q2 through a resistor R1, the signal input end is also electrically connected with the grid electrode of a field-effect tube Q3 through a resistor R12, the power input end is respectively electrically connected with the emitter electrode of a triode Q1 and the emitter electrode of a triode Q2, the collector electrode of the triode Q2 is electrically connected with the drain electrode of a field-effect tube Q3 through a resistor R3, the source electrode of the field-effect tube Q3 is electrically connected with a GND end, the grid electrode of the field-effect tube Q3 is electrically connected with the GND end through a diode D7, the power input end is electrically connected with the base electrode of a triode Q, half voltage drive module is connected with anodal signal output end electricity, triode Q1's collecting electrode is connected with anodal signal output end electricity through diode D5, diode D4 electric capacity C5 in proper order, field effect transistor Q3 drain electrode is connected with triode Q5's base electricity, triode Q5's collecting electrode is connected with negative signal output end electricity, triode Q1's base still is connected with field effect transistor Q4's drain electrode through resistance R2 electricity, field effect transistor Q4 grid is connected with GND end electricity through resistance R10, resistance R11 in proper order, field effect transistor Q4 source is connected with GND end electricity.
Specifically, the half-voltage driving module comprises a resistor R13, a resistor R14 and a resistor R15 which are sequentially connected in series.
Specifically, the collector of the triode Q1 is electrically connected with the positive electrode of the diode D5, the negative electrode of the diode D5 is electrically connected with the positive electrode of the diode D4, and the negative electrode of the diode D4 is electrically connected with the GND terminal through the resistor R4.
Specifically, a resistor R6 is connected between an emitter and a base of the triode Q2, and a collector of the triode Q2 is electrically connected with a GND end through a capacitor C4 and a resistor R11 in sequence.
Specifically, a resistor R7 is further connected between the gate and the source of the field effect transistor Q3, and a diode D7 and a capacitor C3 are further connected in parallel at two ends of the resistor R7, respectively.
Specifically, the drain electrode of the field effect transistor Q4 is electrically connected with the cathode of the diode D8, the anode of the diode is electrically connected with the GND terminal, the gate of the field effect transistor Q4 is electrically connected with the cathode of the diode D9, the anode of the diode D9 is electrically connected with the anode of the diode D10, the cathode of the diode D10 is electrically connected with the GND terminal, a capacitor C2 is further connected between the gate and the source electrode of the field effect transistor Q4, and two ends of the resistor R11 are further connected with a resistor R16 in parallel.
One end of the resistor R11 is electrically connected with the cathode of the diode group D6, and the other end of the resistor R11 is electrically connected with the anode of the diode group D6 through the resistor R5.
Wherein the diode group D6 includes two diodes connected in parallel.
Specifically, the collector of the triode Q5 is electrically connected to the cathode of the diode D1, the anode of the diode D1 is electrically connected to the cathode of the diode D2, the anode of the diode D2 is electrically connected to the GND terminal, and the base and the emitter of the triode Q5 are connected to a resistor R8 and a capacitor C1, respectively.
The beneficial effects of the utility model reside in that: the relay acceleration and low power consumption driving circuit of the utility model can be used in a general relay driving module with low power consumption or two continuous actions in a short time, such as relay driving in a UPS charging and discharging module; the driving circuit makes up the defect that the acceleration function of the traditional relay driving circuit fails under certain working conditions, reduces the relay maintaining driving voltage, and can achieve the effects of energy conservation and high reliability.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is a timing diagram of the complete single switching of the driving circuit of the present invention.
Fig. 3 is a timing chart of the driving circuit of the present invention operating twice in succession.
The reference numbers illustrate: 1. half presses drive module.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention relates to a relay acceleration and low power consumption driving circuit, which includes a signal input terminal SW, a power input terminal V12, a half-voltage driving module 1, a positive signal output terminal RLY _ DRV +, a negative signal output terminal RLY _ DRV-, a transistor Q1, a transistor Q2, a field effect transistor Q3, a field effect transistor Q4 and a transistor Q5, wherein the signal input terminal SW is electrically connected to a base of the transistor Q2 through a resistor R1, the signal input terminal SW is further electrically connected to a gate of the field effect transistor Q3 through a resistor R12, the power input terminal V12 is electrically connected to an emitter of the transistor Q1 and an emitter of the transistor Q2, a collector of the transistor Q2 is electrically connected to a drain of the field effect transistor Q3 through a resistor R3, a source of the field effect transistor Q3 is electrically connected to a GND terminal, a gate of the field effect transistor Q3 is electrically connected to a GND terminal through a, the power supply input end V12 is electrically connected with the base of a triode Q1 through a resistor R9, the emitter of the triode Q1 is electrically connected with a half-voltage driving module 1 through a diode D3, the half-voltage driving module 1 is electrically connected with an anode signal output end RLY _ DRV +, the collector of the triode Q1 is electrically connected with an anode signal output end RLY _ DRV + through a diode D5 and a diode D4 capacitor C5 in sequence, the drain of the field effect tube Q3 is electrically connected with the base of the triode Q5, the collector of the triode Q5 is electrically connected with a cathode signal output end RLY _ DRV-, the base of the triode Q1 is also electrically connected with the drain of a field effect tube Q4 through a resistor R2, the gate of the field effect tube Q4 is electrically connected with a GND end through a resistor R10 and a resistor R11 in sequence, and the source of the field effect tube Q4; the half-voltage driving module 1 comprises a resistor R13, a resistor R14 and a resistor R15 which are sequentially connected in series;
in the embodiment, the collector of the triode Q1 is electrically connected with the positive electrode of a diode D5, the negative electrode of the diode D5 is electrically connected with the positive electrode of a diode D4, and the negative electrode of the diode D4 is electrically connected with the GND terminal through a resistor R4; a resistor R6 is connected between the emitter and the base of the triode Q2, and the collector of the triode Q2 is electrically connected with the GND end through a capacitor C4 and a resistor R11 in sequence; a resistor R7 is connected between the grid and the source of the field effect transistor Q3, and a diode D7 and a capacitor C3 are respectively connected in parallel at two ends of the resistor R7; the drain electrode of the field effect transistor Q4 is electrically connected with the negative electrode of the diode D8, the anode of the diode is electrically connected with the GND end, the grid electrode of the field effect transistor Q4 is electrically connected with the negative electrode of the diode D9, the anode of the diode D9 is electrically connected with the anode of the diode D10, the cathode of the diode D10 is electrically connected with the GND end, a capacitor C2 is further connected between the grid electrode and the source electrode of the field effect transistor Q4, and two ends of the resistor R11 are connected with a resistor R16 in parallel. One end of the resistor R11 is electrically connected with the cathode of the diode group D6, the other end of the resistor R11 is electrically connected with the anode of the diode group D6 through the resistor R5, and the diode group D6 comprises two parallel diodes; the collector of the triode Q5 is electrically connected with the cathode of the diode D1, the anode of the diode D1 is electrically connected with the cathode of the diode D2, the anode of the diode D2 is electrically connected with the GND end, and a resistor R8 and a capacitor C1 are respectively connected between the base and the emitter of the triode Q5.
In the present embodiment, the diode D1, the diode D2, the diode D7, the diode D8, the diode D9 and the diode D10 are zener diodes, and the diode D3, the diode D4, the diode D5 and the diode group D6 are ordinary diodes. The triode Q1 and the triode Q2 are PNP type triodes, and the triode Q5 is NPN type triodes; and the field effect transistor Q4 and the field effect transistor Q5 both adopt N-MOS transistors.
It should be further noted that the signal input terminal SW in this embodiment is a driving signal sent by the control board; the power supply input end V12 is a positive output signal of an auxiliary power supply in the system; the positive electrode signal output end RLY _ DRV + and the negative electrode signal output end RLY _ DRV-are output signals of the drive circuit and are transmitted to a relay coil; and the half-pressure driving module 1 realizes a steady-state half-pressure driving function.
In this embodiment, the technical indexes satisfied by the driving circuit are: the steady state driving voltage of the relay is 6V; after the accelerating capacitor is filled in a normal state, the driving voltage for two times of voltage doubling acceleration is larger than 20V within 40ms continuously, and the accelerating effect is ensured; the accelerating capacitor can maintain the relay driving voltage in a steady state, even if the rapid voltage doubling acceleration can provide about 18V driving voltage again, and a certain accelerating effect is ensured.
First, description of voltage-doubling driving at the time of operation:
referring to fig. 1 and 2, the principle of acceleration from normal to steady state is as follows:
1) the initial state signal input end SW is high level, the field effect transistor Q3 is in a conducting state, the triode Q1, the triode Q2, the triode Q5 and the field effect transistor Q4 are in a closing state, at the moment, the relay is in a normal state, the capacitor C5 is charged by 12V through the diode D3, the half-voltage driving module 1 and the resistor R4, and the time from 0V to 12V is about 3 s. Capacitor C5 then maintains 12V ready for voltage doubling acceleration.
2) When the signal input end SW is changed into a low level, the field effect tube Q3 is turned off, the triode Q1, the triode Q2, the triode Q5 and the field effect tube Q4 are simultaneously turned on (switch delay is ignored), in the process, a capacitor C5 discharging loop is a relay, a triode Q5, a GND end, a power supply input end V12, a triode Q1, a diode D5 and a diode D4 loop, and a 24V voltage-multiplying acceleration function is realized on a relay coil. The conduction time of the field effect transistor Q4 is determined by a capacitor C4, a resistor R11 and a resistor R16, the conduction time of Q4 is the conduction time of Q1, the conduction time of Q1 is the voltage doubling time of the relay, and the time of the driving voltage of the field effect transistor Q4 is reduced to the threshold voltage is about 7 ms.
3) After 7ms, the field effect transistor Q4 and the triode Q1 are turned off, the relay enters a steady state, the capacitor C4 continues to be charged, a discharging loop of the capacitor C5 is changed into a loop of the relay, the triode Q5, a GND end and a resistor R4, the discharging speed of C5 is reduced, and finally the C5 maintains the steady-state driving voltage of the relay at 6V.
4) When the signal input end SW is changed from the low level to the high level, the triode Q1, the triode Q2, the triode Q5 and the field-effect tube Q4 are switched off, the field-effect tube Q3 is switched on, and the elastic sheet of the relay is elastically restored and enters the normal state. The capacitor C4 discharges through resistor R3, fet Q3, resistor R5, diode D6, resistor R11 and resistor R16, which is discharged for about 6 ms. The capacitor C5 is charged by 12V through a diode D3, the half-voltage driving module 1 and a resistor R4 in a loop mode, and is charged to 11.5V through about 2.5s on the basis of 6V to prepare for the next voltage-multiplying driving.
Second, description of voltage doubling for two consecutive operations
The voltage doubling acceleration effect depends on the voltage stored in the capacitor C5 immediately before the signal input SW goes low, and the voltage of the capacitor C5 depends on the previous state and the holding time.
Referring to fig. 3, the capacitor C5 is charged to 12V in the first normal state, so that the 24V voltage-multiplying acceleration can be realized to enter the steady state, in the process, the capacitor C5 is charged to the lowest voltage of 6V, even if the capacitor C5 is not charged in the second normal state, the voltage-multiplying capability in the second operation is 6V +12V, and a certain acceleration effect can be obtained. The voltage of the capacitor C5 is lower than 6V in the second voltage doubling acceleration, and the capacitor C5 is slowly charged to the steady-state driving voltage of the relay, namely 6V, in the steady-state duration.
Description of steady-state medium-half voltage driving
As shown in fig. 1, in the steady state, the transistor Q1 is turned off, the coil of the relay shares 12V voltage with the resistor R13, the resistor R14 and the resistor R15 in the half-voltage driving module 1 (neglecting the tube voltage drop), and the series resistance of the resistor R13, the resistor R14 and the resistor R15 is required to be close to the coil impedance in the design, so the working voltage of the relay in the steady state is about 6V, that is, the half-voltage maintains the steady-state driving, and the relay power consumption is one fourth of the 12V driving.
Compared with the prior art, the action acceleration function in the relay drive circuit makes up the defect that the acceleration function of the traditional relay drive circuit fails under certain working conditions, reduces the relay to maintain the drive voltage, and can achieve the effects of energy conservation and high reliability at the same time. The drive circuit can be used in a relay drive module with low power consumption or two continuous actions in a short time, such as relay drive in a UPS charging and discharging module. The relay driving circuit is recommended to be used in a special environment with strict limitation on the action interruption time of the relay and high relay ring temperature.
The following are abbreviations referred to in this example:
the relay is in a normal state: the state of each contact after the coil is completely powered off;
the steady state of the relay: the state of each contact after the coil is reliably electrified;
the relay acts twice continuously: the first effective acceleration switch is followed by a second acceleration switch.
Voltage doubling acceleration: when the relay is switched from a normal state to a steady state, the voltage of the coil is higher than the rated voltage of the coil, the action of the internal armature is accelerated, and the relay quickly enters the steady state.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.
Claims (9)
1. The utility model provides a relay is accelerated and low-power consumption drive circuit which characterized in that: the power supply comprises a signal input end, a power supply input end, a half-voltage driving module, a positive signal output end, a negative signal output end, a triode Q1, a triode Q2, a field-effect tube Q3, a field-effect tube Q4 and a triode Q5, wherein the signal input end is electrically connected with the base electrode of the triode Q2 through a resistor R1, the signal input end is also electrically connected with the grid electrode of the field-effect tube Q3 through a resistor R12, the power supply input end is respectively electrically connected with the emitter electrode of the triode Q1 and the emitter electrode of the triode Q2, the collector electrode of the triode Q2 is electrically connected with the drain electrode of the field-effect tube Q3 through a resistor R3, the source electrode of the field-effect tube Q3 is electrically connected with a GND end, the grid electrode of the field-effect tube Q3 is electrically connected with the GND end through a diode D7, the power supply input end is electrically connected with the base, half voltage drive module is connected with anodal signal output end electricity, triode Q1's collecting electrode is connected with anodal signal output end electricity through diode D5, diode D4 electric capacity C5 in proper order, field effect transistor Q3 drain electrode is connected with triode Q5's base electricity, triode Q5's collecting electrode is connected with negative signal output end electricity, triode Q1's base still is connected with field effect transistor Q4's drain electrode through resistance R2 electricity, field effect transistor Q4 grid is connected with GND end electricity through resistance R10, resistance R11 in proper order, field effect transistor Q4 source is connected with GND end electricity.
2. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: the half-voltage driving module comprises a resistor R13, a resistor R14 and a resistor R15 which are sequentially connected in series.
3. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: the collector of the triode Q1 is electrically connected with the anode of a diode D5, the cathode of the diode D5 is electrically connected with the anode of a diode D4, and the cathode of the diode D4 is electrically connected with the GND end through a resistor R4.
4. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: a resistor R6 is connected between the emitter and the base of the triode Q2, and the collector of the triode Q2 is electrically connected with the GND end through a capacitor C4 and a resistor R11 in sequence.
5. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: a resistor R7 is connected between the grid and the source of the field effect transistor Q3, and a diode D7 and a capacitor C3 are respectively connected in parallel at two ends of the resistor R7.
6. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: the drain electrode of the field effect transistor Q4 is electrically connected with the negative electrode of the diode D8, the anode of the diode is electrically connected with the GND end, the grid electrode of the field effect transistor Q4 is electrically connected with the negative electrode of the diode D9, the anode of the diode D9 is electrically connected with the anode of the diode D10, the cathode of the diode D10 is electrically connected with the GND end, a capacitor C2 is further connected between the grid electrode and the source electrode of the field effect transistor Q4, and two ends of the resistor R11 are connected with a resistor R16 in parallel.
7. The relay acceleration and low power consumption driving circuit according to claim 6, wherein: one end of the resistor R11 is electrically connected with the cathode of the diode group D6, and the other end of the resistor R11 is electrically connected with the anode of the diode group D6 through the resistor R5.
8. The relay acceleration and low power consumption driving circuit according to claim 7, wherein: the diode group D6 includes two diodes connected in parallel.
9. The relay acceleration and low power consumption driving circuit according to claim 1, wherein: the collector of the triode Q5 is electrically connected with the cathode of the diode D1, the anode of the diode D1 is electrically connected with the cathode of the diode D2, the anode of the diode D2 is electrically connected with the GND end, and a resistor R8 and a capacitor C1 are respectively connected between the base and the emitter of the triode Q5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921982052.8U CN210490839U (en) | 2019-11-15 | 2019-11-15 | Relay is with higher speed and low-power consumption drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921982052.8U CN210490839U (en) | 2019-11-15 | 2019-11-15 | Relay is with higher speed and low-power consumption drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490839U true CN210490839U (en) | 2020-05-08 |
Family
ID=70511040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921982052.8U Expired - Fee Related CN210490839U (en) | 2019-11-15 | 2019-11-15 | Relay is with higher speed and low-power consumption drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210490839U (en) |
-
2019
- 2019-11-15 CN CN201921982052.8U patent/CN210490839U/en not_active Expired - Fee Related
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