CN206191009U - High -speed solenoid valve drive circuit - Google Patents
High -speed solenoid valve drive circuit Download PDFInfo
- Publication number
- CN206191009U CN206191009U CN201621014603.8U CN201621014603U CN206191009U CN 206191009 U CN206191009 U CN 206191009U CN 201621014603 U CN201621014603 U CN 201621014603U CN 206191009 U CN206191009 U CN 206191009U
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- Prior art keywords
- electromagnetic valve
- speed electromagnetic
- valve
- driving voltage
- speed
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Abstract
The utility model relates to a high -speed solenoid valve drive circuit belongs to circuit structure technical field. Utilize the utility model discloses a high -speed solenoid valve drive circuit, open the valve stage, driving voltage VH exports earlier a high level, then export PWM impulse level, thereby under the circumstances of guaranteeing the solenoid valve on -off action, avoid generating heat, reduce energy loss, the service life of high -speed solenoid valve is prolonged, and then utilize driving voltage VL closing the reference voltage that the output of valve stage is used for keeping the high -speed solenoid valve reference current, thereby satisfy the requirement of the high -speed switching of solenoid valve, electromagnetically operated valve switching frequency, just the utility model discloses a high -speed solenoid valve drive circuit, its simple structure, low cost, the range of application is also fairly extensive.
Description
Technical field
The utility model is related to circuit structure technical field, more particularly to electromagnetic valve circuit technical field, specifically refers to one
Plant high-speed electromagnetic valve driver circuit.
Background technology
Magnetic valve is more and more wider in industrial circle application, especially high-speed electromagnetic valve.Due to not conforming to for drive circuit design
Rationality, current electromagnetic valve does not reach the requirement of high speed in many places, in addition, also result in excessive energy loss and magnetic valve
The reduction in life-span.
In magnetic valve application at this stage, drive circuit is mainly driven using univoltage, and its circuit structure is as shown in Figure 1.Should
Mode has two kinds of shortcomings：First, as shown in Fig. 2 driving current rises and driving current release time is long, cause magnetic valve to be opened
Frequency decline is closed, high-speed demand is not reached；Second, using high voltage V1 drive, voltage will saturation early stage, with voltage
Rise, the electric current rate of climb is decreased obviously, cause to produce amount of heat, so as to cause energy loss and the magnetic valve lost of life.
Therefore, how to provide it is a kind of can either meet magnetic valve at a high speed opening and closing requirement, while can reduce again energy damage
Lose, the drive circuit for improving high-speed electromagnetic valve service life turns into this area problem demanding prompt solution.
Utility model content
The purpose of this utility model is to overcome above-mentioned shortcoming of the prior art, there is provided a kind of circuit by optimizing sets
Meter, can either meet the requirement that magnetic valve is opened and closed at a high speed, improve magnetic valve opening and closing frequency, while energy loss can be reduced again,
Improve high-speed electromagnetic valve service life, and simple structure, with low cost, the high speed electromagnetic electrohydraulic valve actuator having wide range of applications
Road.
In order to realize above-mentioned purpose, high-speed electromagnetic valve driver circuit of the present utility model has following composition：
The high-speed electromagnetic valve driver circuit includes be connected between high-speed electromagnetic valve drive end and driving voltage VH first
High-side switch, first high-side switch is used to control between described high-speed electromagnetic valve drive end and described driving voltage VH
Conducting and disconnect, also including being connected to high-speed electromagnetic valve gating end and selecting valve pulse between the first gating switch, it is described
The first gating switch be used to the conducting and disconnection of the high-speed electromagnetic valve for optionally controlling described.
In the high-speed electromagnetic valve driver circuit, described high-speed electromagnetic valve works in valve opening stage, holding stage and valve closing
Stage；When described high-speed electromagnetic valve works in the valve opening stage, described driving voltage VH first exports a high level, then defeated
Go out pwm pulse level, described valve pulse of selecting exports a high level；When described high-speed electromagnetic valve works in the holding stage,
Described driving voltage VH output pwm pulse level, described valve pulse of selecting exports a high level；When described high speed electromagnetic
Valve works in the valve closing stage, and described driving voltage VH and described valve pulse of selecting exports low level.
In the high-speed electromagnetic valve driver circuit, including be connected between high-speed electromagnetic valve drive end and driving voltage VL
Two high-side switch, second high-side switch is used to control between described high-speed electromagnetic valve drive end and described driving voltage VL
Conducting and disconnection.
In the high-speed electromagnetic valve driver circuit, when described high-speed electromagnetic valve works in described valve opening stage, holding rank
Section and valve closing stage, described driving voltage VL outputs are used to keep the reference voltage of the high-speed electromagnetic valve reference current.
It is described when described high-speed electromagnetic valve is in off working state for a long time in the high-speed electromagnetic valve driver circuit
Driving voltage VL not output voltages.
The high-speed electromagnetic valve driver circuit includes the high-speed electromagnetic valve described in multiple, and the first described high-side switch is connected to
Between each described high-speed electromagnetic valve drive end and described driving voltage VH, each described high-speed electromagnetic valve gating end leads to respectively
Cross and select valve pulse described in corresponding gating switch connection.
The high-speed electromagnetic valve driver circuit of the utility model is employed, in the valve opening stage, driving voltage VH first exports one
High level, then exports pwm pulse level, so as in the case where magnetic valve on-off action is ensured, it is to avoid heating, reduces energy
Loss, improves high-speed electromagnetic valve service life, and then in the valve closing stage, output is used to keep high speed electromagnetic using driving voltage VL
The reference voltage of valve reference current, so as to meet the requirement that magnetic valve is opened and closed at a high speed, improves magnetic valve opening and closing frequency, and this practicality
New high-speed electromagnetic valve driver circuit, its simple structure is with low cost, and range of application is also quite extensive.
Brief description of the drawings
Fig. 1 is the electrical block diagram of high-speed electromagnetic valve driver circuit of the prior art.
Fig. 2 is the driving voltage waveform diagram of high-speed electromagnetic valve driver circuit of the prior art.
Fig. 3 is the electrical block diagram of high-speed electromagnetic valve driver circuit of the present utility model.
Fig. 4 is the driving voltage waveform diagram of high-speed electromagnetic valve driver circuit of the present utility model.
Specific embodiment
In order to be more clearly understood that technology contents of the present utility model, described in detail especially exemplified by following examples.
Refer to shown in Fig. 1, be the electrical block diagram of high-speed electromagnetic valve driver circuit of the present utility model.
In one embodiment, high-speed electromagnetic valve driver circuit, as shown in figure 3, including being connected to high-speed electromagnetic valve
The first high-side switch between drive end and driving voltage VH, first high-side switch is used to control described high-speed electromagnetic valve to drive
Conducting and disconnection between moved end and described driving voltage VH, also including being connected to the high-speed electromagnetic valve gating end and selecting valve
The first gating switch between pulse, the first described gating switch is used to optionally control leading for described high-speed electromagnetic valve
On and off is opened.As shown in figure 4, described high-speed electromagnetic valve works in valve opening stage, holding stage and valve closing stage；When described
High-speed electromagnetic valve works in the valve opening stage, and described driving voltage VH first exports a high level, then exports pwm pulse electricity
Flat, described valve pulse of selecting exports a high level；When described high-speed electromagnetic valve works in holding stage, described driving electricity
Pressure VH output pwm pulse level, described valve pulse of selecting exports a high level；When described high-speed electromagnetic valve works in valve closing
Stage, described driving voltage VH and described valve pulse of selecting exports low level.
In a preferred embodiment, including be connected between high-speed electromagnetic valve drive end and driving voltage VL it is second high
Bit switch, second high-side switch is used to control leading between described high-speed electromagnetic valve drive end and described driving voltage VL
On and off is opened.When described high-speed electromagnetic valve works in described valve opening stage, holding stage and valve closing stage, described driving
Voltage VL outputs are used to keep the reference voltage of the high-speed electromagnetic valve reference current.And the high-speed electromagnetic valve described in is for a long time
In off working state, described driving voltage VL not output voltage.
In preferred implementation method, as shown in figure 3, the high-speed electromagnetic valve driver circuit includes the high speed described in multiple
Magnetic valve, the first described high-side switch be connected to each described high-speed electromagnetic valve drive end and described driving voltage VH it
Between, valve pulse is selected in each described high-speed electromagnetic valve gating end by described in the connection of corresponding gating switch respectively.
High-speed electromagnetic valve worked according to the different stages, need to produce driving current I and maintenance electric current i by driving voltage.
Driving current I：Magnetic valve overcomes contained spring acting to open magnetic valve, when beginning drive magnetic valve extension spring
When, than larger, this design is magnetic valve is opened as early as possible using high current to required strength, so as to improve valve opening speed.
But, research finds, after driving voltage reaches to a certain degree, the rising of electric current can become very slow, and this has been resulted in needs
Driving power supply that will be very big could produce high current, and during this, unnecessary energy can produce very big heat, cause efficiency
Reduce the shortening with the magnetic valve life-span.
Maintain electric current i：After magnetic valve is opened, it is only necessary to maintain the spring in extended state, required strength is slightly smaller.
It is of the present utility model it is intended that using twin voltage drive, not only improve magnetic valve opening and closing frequency, also reduce energy
Consumption, extends the life-span of magnetic valve.
In actual applications, high-speed electromagnetic valve driver circuit of the present utility model be about being made that prior art with
Improved at lower two.
Improvement 1,
Valve opening stage, driving voltage VH is changed to a high level (T1 stages) and continuous several PWM ripples (T2 stages).
T1 stages, electric current can rapidly be raised with the rising of VH, and when T2 is reached, the driving current rate of climb can become very slow, such as
Now VH continues to keep high voltage, electric current to rise very little fruit, and unnecessary ability is used for generating heat, and causes efficiency reduction and magnetic valve longevity
Life loss (it can be found that original driving current understands I than the driving current I1 after improvement greatly a bit from oscillogram, but electromagnetism
The main energetic loss of valve just occurs during electric current is raised to I from I1, and the utility model has avoided the stage).And now
The strength of DM can overcome the spring inside magnetic valve to do work, and magnetic valve is opened.So, it is only necessary to several PWM
Pulse, keeps driving current, just can open magnetic valve, improves efficiency, reduces heat release.
Improvement 2,
Driven using twin voltage, increased a driving voltage VL.The effect of VL is (the T4 ranks after closed electromagnetic valve
Section), continue as magnetic valve and one reference current is provided, when next magnetic valve opening signal comes interim, can rapidly improve drive
Streaming current, so as to more quickly open magnetic valve, reaches the purpose of opening and closing at a high speed (because the reference current that VL is provided compares
Small, energy loss and the infringement to magnetic valve are very low).When long-time does not have valve opening signal, VL is closed, so as to reach raising energy
The effect of effect and protection magnetic valve.
The high-speed electromagnetic valve driver circuit of the utility model is employed, in the valve opening stage, driving voltage VH first exports one
High level, then exports pwm pulse level, so as in the case where magnetic valve on-off action is ensured, it is to avoid heating, reduces energy
Loss, improves high-speed electromagnetic valve service life, and then in the valve closing stage, output is used to keep high speed electromagnetic using driving voltage VL
The reference voltage of valve reference current, so as to meet the requirement that magnetic valve is opened and closed at a high speed, improves magnetic valve opening and closing frequency, and this practicality
New high-speed electromagnetic valve driver circuit, its simple structure is with low cost, and range of application is also quite extensive.
In this description, the utility model is described with reference to its specific embodiment.But it is clear that still can be with
Various modification can be adapted and conversion is without departing from spirit and scope of the present utility model.Therefore, specification and drawings are considered as
It is illustrative and not restrictive.
Claims (6)
1. a kind of high-speed electromagnetic valve driver circuit, it is characterised in that including being connected to high-speed electromagnetic valve drive end and driving voltage
The first high-side switch between VH, first high-side switch is used to control described high-speed electromagnetic valve drive end and described driving
Conducting and disconnection between voltage VH, also including being connected to high-speed electromagnetic valve gating end and selecting valve pulse between the first choosing
Pass is opened up, the first described gating switch is used to the conducting and disconnection of the high-speed electromagnetic valve for optionally controlling described.
2. high-speed electromagnetic valve driver circuit according to claim 1, it is characterised in that described high-speed electromagnetic valve is worked in
Valve opening stage, holding stage and valve closing stage；When described high-speed electromagnetic valve works in valve opening stage, described driving voltage VH
A high level is first exported, pwm pulse level is then exported, described valve pulse of selecting exports a high level；When described height
Fast electromagnetic valve work exports one in the stage of holding, described driving voltage VH output pwm pulse level, described valve pulse of selecting
High level；When described high-speed electromagnetic valve works in the valve closing stage, described driving voltage VH and described select valve pulse defeated
Go out low level.
3. high-speed electromagnetic valve driver circuit according to claim 2, it is characterised in that driven including being connected to high-speed electromagnetic valve
The second high-side switch between moved end and driving voltage VL, second high-side switch is used to control described high-speed electromagnetic valve to drive
Conducting and disconnection between end and described driving voltage VL.
4. high-speed electromagnetic valve driver circuit according to claim 3, it is characterised in that when described high-speed electromagnetic valve works
In the described valve opening stage, kept for stage and valve closing stage, described driving voltage VL outputs are used to keep the high speed electromagnetic
The reference voltage of valve reference current.
5. high-speed electromagnetic valve driver circuit according to claim 4, it is characterised in that when described high-speed electromagnetic valve is long
Between be in off working state, described driving voltage VL not output voltage.
6. high-speed electromagnetic valve driver circuit according to claim 1, it is characterised in that including the high speed electromagnetic described in multiple
Valve, the first described high-side switch is connected between each described high-speed electromagnetic valve drive end and described driving voltage VH, respectively
Valve pulse is selected by described in the connection of corresponding gating switch in described high-speed electromagnetic valve gating end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014603.8U CN206191009U (en) | 2016-08-30 | 2016-08-30 | High -speed solenoid valve drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014603.8U CN206191009U (en) | 2016-08-30 | 2016-08-30 | High -speed solenoid valve drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206191009U true CN206191009U (en) | 2017-05-24 |
Family
ID=58728019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621014603.8U Withdrawn - After Issue CN206191009U (en) | 2016-08-30 | 2016-08-30 | High -speed solenoid valve drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206191009U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122565A (en) * | 2016-08-30 | 2016-11-16 | 上海太易检测技术有限公司 | High-speed electromagnetic valve driver circuit |
| TWI835024B (en) * | 2020-11-17 | 2024-03-11 | 德商費斯托工具有限責任公司 | Electric power tools with safety brakes that include impulse solenoids and methods of operating the electric power tools |
-
2016
- 2016-08-30 CN CN201621014603.8U patent/CN206191009U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122565A (en) * | 2016-08-30 | 2016-11-16 | 上海太易检测技术有限公司 | High-speed electromagnetic valve driver circuit |
| CN106122565B (en) * | 2016-08-30 | 2018-07-20 | 上海太易检测技术有限公司 | High-speed electromagnetic valve driver circuit |
| TWI835024B (en) * | 2020-11-17 | 2024-03-11 | 德商費斯托工具有限責任公司 | Electric power tools with safety brakes that include impulse solenoids and methods of operating the electric power tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170524 Effective date of abandoning: 20180720 |