CN204230160U - Relay drive circuit and relay - Google Patents
Relay drive circuit and relay Download PDFInfo
- Publication number
- CN204230160U CN204230160U CN201420560072.7U CN201420560072U CN204230160U CN 204230160 U CN204230160 U CN 204230160U CN 201420560072 U CN201420560072 U CN 201420560072U CN 204230160 U CN204230160 U CN 204230160U
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- electronic switch
- relay
- drive circuit
- electric capacity
- triode
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Abstract
The utility model discloses a kind of relay drive circuit and relay.This relay drive circuit comprises: the first electric capacity, the first end of its first end contact relay coil; First electronic switch, its first end is connected with the second end of the first electric capacity and its second end is connected with positive source; Second electronic switch, its first end is connected with the second end of the first electric capacity and its second end is connected with power cathode; 3rd electronic switch, its first end is connected with the first end of the first electric capacity and its second end is connected with positive source; 4th electronic switch, its first end is connected with the second end of relay coil and its second end is connected with power cathode.By controlling the break-make sequential of first to fourth electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.By the utility model, reduce the power loss of correlation technique repeat circuit coil.
Description
Technical field
The utility model relates to electronic applications, in particular to a kind of relay drive circuit and relay.
Background technology
Relay is widely used in Electronic Control, and Fig. 1 shows a basic relay drive circuit.Comprise relay K 1, transistor Q1, diode D1.This transistor Q1 connects with this relay K 1, this D1 and this relay coil K1 are connected side by side, wherein the negative electrode of D1 is connected with power supply, and transistor Q1 is connected with the other end of power supply, and the base stage of this transistor Q1 is connected with drive singal by resistance R1.When drive singal is high, Q1 opens, and power supply is powered to relay, so this relay will be opened.
But, there is a problem in such relay drive circuit, when this supply voltage exists a wide scope, the voltage being carried in this power supply on this relay coil will be also a larger scope, and this relay coil can become hotter and can exceed the rated power specified in relay coil specification at some time.
In correlation technique, in order to solve this technical problem, following technical scheme can be adopted:
A) conventional circuit is used to limit supply voltage in narrow scope.
B) pulse-width modulation (Pluse-Width Modulation is used, referred to as PWM) signal drives relay, when relay power, use and drive compared with the pwm signal of big space rate, upon power-up, use the pwm signal of less duty ratio to drive the open mode of latching relay, like this, the power supply power consumption on relay coil will reduce.
C) a resistance-capacitance network string (see Fig. 2) is increased to relay coil, relay power initial time, be carried in voltage on relay coil close to supply power voltage, then over time, become, voltage on this relay coil will reduce, thus the power supply power consumption on relay coil will reduce.
D) two-way drive singal (see Fig. 3) is used, a wherein road signal controlling the first transistor, make the first transistor be that relay coil loads all power, another road signal controlling transistor seconds, make transistor seconds be that relay coil loads the power supply after reducing.In the start time of relay power, this all power voltage-drop loading is on relay coil, and over time, become, the supply voltage of reduction will be carried on relay coil.
But there are the following problems for above-mentioned solution:
Mode a) will increase the cost of custom circuit.
Mode b) needs are increased more software resource and generates more noise.
Mode c) this relay can not be driven within the time that closed relay is very short.
Mode d) need two-way drive singal.
Although the technical scheme in correlation technique can solve the problem that relay coil causes because power is excessive generating heat, these solutions all need additionally increase drive singal or increase control circuit, implement more complicated.
For the problems referred to above that correlation technique repeat circuit drive circuit exists, at present effective solution is not yet proposed.
Utility model content
The utility model provides a kind of relay drive circuit and relay, at least to solve above-mentioned relay drive circuit Problems existing.
On the one hand, provide a kind of relay drive circuit, comprising: the first electric capacity, the first end of the first end contact relay coil of this first electric capacity; First electronic switch, the first end of this first electronic switch is connected with the second end of the first electric capacity, and the second end of this first electronic switch is connected with positive source; Second electronic switch, the first end of this second electronic switch is connected with the second end of the first electric capacity, and the second end of this second electronic switch is connected with power cathode; 3rd electronic switch, the first end of the 3rd electronic switch is connected with the first end of the first electric capacity, and the second end of the 3rd electronic switch is connected with positive source; 4th electronic switch, the first end of the 4th electronic switch is connected with the second end of relay coil, and the second end of the 4th electronic switch is connected with power cathode; Wherein, by controlling the break-make sequential of first to fourth electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.
Preferably, first, second, third, fourth electronic switch is triode.
Preferably, first, second, third, fourth electronic switch is field-effect transistor.
Preferably, first, second, third, fourth electronic switch is the electronic switching device of integrated circuit form.
Preferably, the second electronic switch is resistance; 3rd electronic switch is diode.
Preferably, the first electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch are the electronic switching device of transistor or field-effect transistor or integrated circuit form.
Preferably, the second electronic switch is the first resistance; 3rd electronic switch is the first diode; First electronic switch is the first triode; 4th electronic switch is the second triode.
Preferably, described relay drive circuit also comprises the second resistance, and one end of this second resistance is connected with the base stage of the first triode, and the other end of this second resistance is connected with the collector electrode of the second triode.
Preferably, described relay drive circuit also comprises the second diode, and the collector electrode of this second diode and the first triode is connected in series; 3rd diode, the 3rd diode one end is connected with the emitter of the first triode, and the other end is connected with the collector electrode of the second triode.
Preferably, the base stage of the second triode is connected with drive singal, and this drive singal is used for the action of control relay.
Preferably, described relay drive circuit also comprises the 3rd resistance, and the 3rd resistant series is between drive singal and the base stage of the second triode.
On the other hand, additionally provide a kind of relay, comprising: above-mentioned relay drive circuit.
By the technical scheme that the utility model provides, adopt the relay drive circuit comprising the first electronic switch, the second electronic switch, the first electric capacity, the 3rd electronic switch and the 4th electronic switch, wherein, the first end of the first end contact relay coil of the first electric capacity; The first end of the first electronic switch is connected with the second end of the first electric capacity, and the second end of this first electronic switch is connected with positive source; The first end of the second electronic switch is connected with the second end of the first electric capacity, and the second end of this second electronic switch is connected with power cathode; The first end of the 3rd electronic switch is connected with the first end of the first electric capacity, and the second end of the 3rd electronic switch is connected with positive source; The first end of the 4th electronic switch is connected with the second end of relay coil, and the second end of the 4th electronic switch is connected with power cathode; By controlling the break-make sequential of first to fourth electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.This technical scheme use only a kind of control signal, when there is no extra control circuit, achieve the control to power consumption on relay coil, the relay drive circuit solved in correlation technique needs extra increase drive singal or increases control circuit, implement more complicated problem, and then reach the effect reducing relay drive circuit complexity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the basic relay drive circuit according to correlation technique;
Fig. 2 is the schematic diagram of the relay drive circuit having RC in parallel according to the relay coil of correlation technique;
Fig. 3 is the relay drive circuit of two kinds of signals according to correlation technique;
Fig. 4 is the schematic diagram one according to the relay drive circuit of the utility model embodiment;
Fig. 5 is the schematic diagram two according to the relay drive circuit of the utility model embodiment;
Fig. 6 is the schematic diagram three according to the relay drive circuit of the utility model embodiment;
Fig. 7 is the schematic diagram four according to the relay drive circuit of the utility model embodiment;
Fig. 8 is the schematic diagram five according to the relay drive circuit of the utility model embodiment;
Fig. 9 is the schematic diagram six according to the relay drive circuit of the utility model embodiment;
Figure 10 is the schematic diagram seven according to the relay drive circuit of the utility model embodiment.
Embodiment
Hereinafter also describe the utility model in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment one
Present embodiments provide a kind of relay drive circuit, Fig. 4 is the schematic diagram of the relay drive circuit according to the utility model embodiment, as shown in Figure 4, this relay drive circuit comprises: the first electronic switch S1, the second electronic switch S2, the 3rd electronic switch S3, the 4th electronic switch S4 and the first electric capacity C1.
Wherein, the first end of the first end contact relay coil of the first electric capacity; The first end of the first electronic switch is connected with the second end of the first electric capacity, and the second end of this first electronic switch is connected with positive source; The first end of the second electronic switch is connected with the second end of the first electric capacity, and the second end of this second electronic switch is connected with power cathode; The first end of the 3rd electronic switch is connected with the first end of the first electric capacity, and the second end of the 3rd electronic switch is connected with positive source; The first end of the 4th electronic switch is connected with the second end of relay coil, and the second end of the 4th electronic switch is connected with power cathode; By controlling the break-make sequential of first to fourth electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.
By the technical scheme of the present embodiment, when there is no extra control circuit, achieve the control to power consumption on relay coil, the relay drive circuit solved in correlation technique needs extra increase drive singal or increases control circuit, implement more complicated problem, and then reach the effect reducing and lower relay drive circuit complexity.
It should be noted that, by the relay drive circuit that above-described embodiment provides, the voltage saved for electric capacity owing to driving the voltage (relay rated operational voltage) of relay adhesive and supply voltage, also namely, power supply supply voltage can be used to be less than relay rated operational voltage to power drives relay.Such as: relay rated operational voltage is 10V, voltage can be adopted to be the power drives relay of 6V.
As a preferably execution mode, this first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch are triode.It should be noted that, the first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch can adopt the electronic devices and components that can realize in correlation technique opening or closing.
Preferably, described first, second, third, fourth electronic switch is field-effect transistor to ratio.
Preferably, described first, second, third, fourth electronic switch is the electronic switching device of integrated circuit form to ratio.
Preferably, described second electronic switch is resistance to ratio; Described 3rd electronic switch is diode.
Preferably, described first electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch are the electronic switching device of transistor or field-effect transistor or integrated circuit form.
Particularly, as shown in Figure 5, the second electronic switch is resistance, and the 3rd electronic switch is diode.
Particularly, as shown in Figure 6, the second electronic switch is described first resistance; Described 3rd electronic switch is described first diode; Described first electronic switch is described first triode; Described 4th electronic switch is described second triode.
Particularly, as shown in Figure 7, described relay drive circuit also comprises the second resistance, and one end of this second resistance is connected with the base stage of described first triode, and the other end of described second resistance is connected with the collector electrode of described second triode.
Particularly, as shown in Figure 8, also comprise the second diode, this second Diode series is at the first transistor collector circuit; 3rd diode, the 3rd diode one end is connected with the first transistor emitter, and the other end is connected with the second transistor collector.
Particularly, as shown in Figure 9, the base stage of described second triode is connected with drive singal, and this drive singal is used for the action of control relay.
Particularly, as shown in Figure 10, also comprise in this circuit diagram: the 3rd resistance, the 3rd resistant series is between drive singal and the base stage of described second triode.
It should be noted that, above-mentioned preferably embodiment, can combinationally use, and such as, in one embodiment, can comprise: one or more in the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance.
Preferably, the electric capacity in this embodiment and multiple resistance value, can be arranged according to actual needs.Such as, the optimum configurations of this electric capacity can complete with reference to making within a certain period of time this capacitor charging, meets the demand driving relay rated voltage.Multiple resistance value, meets the requirement to electric current in relay drive circuit.
By the relay drive circuit that this preferred embodiment provides, following technique effect can be reached: only use a road drive singal; Within very short time, again relay can be opened after cut-off; Do not need additionally to increase software PWM resource; This relay drive circuit reduces the complexity of circuit, and promotes supply voltage, makes the relay of the relay coil that rated voltage can be driven higher by lower supply voltage.
Embodiment two
Present embodiments provide a kind of relay, this relay comprises: relay coil and relay drive circuit.
In the present embodiment, a kind of relay drive circuit in above-described embodiment and preferred embodiment can be adopted.This relay drive circuit can comprise: the first electronic switch S1, the second electronic switch S2, the 3rd electronic switch S3, the 4th electronic switch S4 and the first electric capacity C1.
Wherein, the first end of the first end contact relay coil of the first electric capacity; The first end of the first electronic switch is connected with the second end of the first electric capacity, and the second end of this first electronic switch is connected with positive source; The first end of the second electronic switch is connected with the second end of the first electric capacity, and the second end of this second electronic switch is connected with power cathode; The first end of the 3rd electronic switch is connected with the first end of the first electric capacity, and the second end of the 3rd electronic switch is connected with positive source; The first end of the 4th electronic switch is connected with the second end of relay coil, and the second end of the 4th electronic switch is connected with power cathode; By controlling first in the break-make sequential of the 4th electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.
By the technical scheme of the present embodiment, when there is no extra control circuit, achieve the control to power consumption on relay coil, the relay drive circuit solved in correlation technique needs extra increase drive singal or increases control circuit, implement more complicated problem, and then reach the effect reducing and lower relay drive circuit complexity.
It should be noted that, by the relay drive circuit that above-described embodiment provides, the voltage saved for electric capacity owing to driving the voltage (relay rated operational voltage) of relay adhesive and supply voltage, also namely, power supply supply voltage can be used to be less than relay rated operational voltage to power drives relay.Such as: relay rated operational voltage is 10V, voltage can be adopted to be the power drives relay of 6V.
As a preferably execution mode, this first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch are triode.It should be noted that, the first electronic switch, the second electronic switch, the 3rd electronic switch and the 4th electronic switch can adopt the electronic devices and components that can realize in correlation technique opening or closing.
Preferably, described first, second, third, fourth electronic switch is field-effect transistor to ratio.
Preferably, described first, second, third, fourth electronic switch is the electronic switching device of integrated circuit form to ratio.
Preferably, described second electronic switch is resistance to ratio; Described 3rd electronic switch is diode.
Preferably, described first electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch are the electronic switching device of transistor or field-effect transistor or integrated circuit form.
Particularly, as shown in Figure 5, the second electronic switch is resistance, and the 3rd electronic switch is diode.
Particularly, as shown in Figure 6, the second electronic switch is described first resistance; Described 3rd electronic switch is described first diode; Described first electronic switch is described first triode; Described 4th electronic switch is described second triode.
Particularly, as shown in Figure 7, also comprise the second resistance, one end of this second resistance is connected with the base stage of described first triode, and the other end of described second resistance is connected with the collector electrode of described second triode.
Particularly, as shown in Figure 8, also comprise the second diode, this second Diode series is at the first transistor collector circuit; 3rd diode, the 3rd diode one end is connected with the first transistor emitter, and the other end is connected with the second transistor collector.
Particularly, as shown in Figure 9, the base stage of described second triode is connected with drive singal, and this drive singal is used for the action of control relay.
Particularly, as shown in Figure 10, also comprise in this circuit diagram: the 3rd resistance, the 3rd resistant series is between drive singal and the base stage of described second triode.
It should be noted that, above-mentioned preferably embodiment, can combinationally use, and such as, in one embodiment, can comprise: one or more in the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance.
Preferably, the electric capacity in this embodiment and multiple resistance value, can be arranged according to actual needs.Such as, the optimum configurations of this electric capacity can complete with reference to making within a certain period of time this capacitor charging, meets the demand driving relay rated voltage.Multiple resistance value, meets the requirement to electric current in relay drive circuit.
By above-described embodiment and preferred embodiment, provide a kind of relay drive circuit and relay.By including the first electronic switch, the relay drive circuit of the second electronic switch, the second electronic switch, the 4th electronic switch and electric capacity and relay, achieve when employing a road drive singal and not needing additionally to increase software PWM resource, the power of relay coil is controlled, thus reduce the complexity of the circuit of correlation technique repeat circuit coil, thus also reduce the cost of relay drive circuit to a certain extent.Further, achieve and be less than relay rated voltage by voltage work is carried out to power drives relay.It should be noted that, these technique effects are not that above-mentioned all execution modes have, and some technique effect is that some preferred implementation just can obtain.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within principle of the present utility model, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (11)
1. a relay drive circuit, is characterized in that, comprising:
First electric capacity, the first end of the first end contact relay coil of this first electric capacity;
First electronic switch, the first end of this first electronic switch is connected with the second end of the first electric capacity, and the second end of this first electronic switch is connected with positive source;
Second electronic switch, the first end of this second electronic switch is connected with the second end of the first electric capacity, and the second end of this second electronic switch is connected with power cathode;
3rd electronic switch, the first end of the 3rd electronic switch is connected with the first end of the first electric capacity, and the second end of the 3rd electronic switch is connected with positive source;
4th electronic switch, the first end of the 4th electronic switch is connected with the second end of relay coil, and the second end of the 4th electronic switch is connected with power cathode;
By controlling the break-make sequential of first to fourth electronic switch, make the first electric capacity obtain energy, the energy when driving relay on this first electric capacity and power supply energy superpose after-applied to relay coil.
2. relay drive circuit according to claim 1, is characterized in that:
Described first electronic switch, described second electronic switch, described 3rd electronic switch and described 4th electronic switch are triode.
3. relay drive circuit according to claim 1, is characterized in that:
Described first electronic switch, described second electronic switch, described 3rd electronic switch and described 4th electronic switch are field-effect transistor.
4. relay drive circuit according to claim 1, is characterized in that:
Described first electronic switch, described second electronic switch, described 3rd electronic switch and described 4th electronic switch are the electronic switching device of integrated circuit form.
5. relay drive circuit according to claim 1, is characterized in that:
Described second electronic switch is resistance;
Described 3rd electronic switch is diode.
6. relay drive circuit according to claim 1, is characterized in that:
First electronic switch, the second electronic switch, the 3rd electronic switch, the 4th electronic switch are the electronic switching device of transistor or field-effect transistor or integrated circuit form.
7. relay drive circuit according to claim 1, is characterized in that:
Described second electronic switch is the first resistance;
Described 3rd electronic switch is the first diode;
Described first electronic switch is the first triode;
Described 4th electronic switch is the second triode.
8. relay drive circuit according to claim 7, is characterized in that, also comprises:
Second resistance, one end of this second resistance is connected with the base stage of described first triode, and the other end of this second resistance is connected with the collector electrode of described second triode.
9. relay drive circuit according to claim 8, is characterized in that, also comprises:
Second diode, the collector electrode of this second diode and the first triode is connected in series;
3rd diode, the 3rd diode one end is connected with the emitter of the first triode, and the other end is connected with the collector electrode of the second triode.
10. relay drive circuit according to claim 9, is characterized in that, also comprises:
The base stage of described second triode is connected with drive singal, and this drive singal is used for the action of control relay.
11. relay drive circuits according to claim 9, is characterized in that, also comprise:
3rd resistance, the 3rd resistant series is between drive singal and the base stage of described second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560072.7U CN204230160U (en) | 2014-09-26 | 2014-09-26 | Relay drive circuit and relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560072.7U CN204230160U (en) | 2014-09-26 | 2014-09-26 | Relay drive circuit and relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204230160U true CN204230160U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560072.7U Expired - Fee Related CN204230160U (en) | 2014-09-26 | 2014-09-26 | Relay drive circuit and relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204230160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112038A (en) * | 2019-06-11 | 2019-08-09 | 骆驼集团武汉光谷研发中心有限公司 | A kind of relay drive circuit |
-
2014
- 2014-09-26 CN CN201420560072.7U patent/CN204230160U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112038A (en) * | 2019-06-11 | 2019-08-09 | 骆驼集团武汉光谷研发中心有限公司 | A kind of relay drive circuit |
| CN110112038B (en) * | 2019-06-11 | 2020-11-06 | 骆驼集团武汉光谷研发中心有限公司 | Relay drive circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20210926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |