CN203521321U - Relay control circuit and contactor control circuit - Google Patents
Relay control circuit and contactor control circuit Download PDFInfo
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- CN203521321U CN203521321U CN201320591604.9U CN201320591604U CN203521321U CN 203521321 U CN203521321 U CN 203521321U CN 201320591604 U CN201320591604 U CN 201320591604U CN 203521321 U CN203521321 U CN 203521321U
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- contactor
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- absorbing unit
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Abstract
The utility model provides a relay control circuit and a contactor control circuit, wherein the relay control circuit comprises a switch unit, a freewheeling unit and a voltage stabilization energy-absorbing unit, wherein the switch unit and a relay coil are connected in series between a power supply and the ground, and the voltage stabilization energy-absorbing unit and the freewheeling unit are connected in series and then connected to the two ends of the relay coil in parallel. The voltage stabilization energy-absorbing unit is cut off when the voltage across the voltage stabilization energy-absorbing unit is lower than or equal to a threshold voltage, and at the moment, the relay coil fails to form a conducted loop, so that the cut-off speed of the relay is increased; and when the voltage across the voltage stabilization energy-absorbing unit exceeds the threshold voltage, the relay coil and the freewheeling unit are conducted to form a freewheeling loop, while the voltage stabilization energy-absorbing unit is capable of absorbing energy during the conducted time, so that the cut-off speed of the relay is also increased.
Description
Technical field
The utility model relates to control circuit, is specifically related to a kind of control relay circuit and contactor control circuit.
Background technology
General traditional relay/contactor control circuit, (in figure, take control relay circuit as example) as depicted in figs. 1 and 2, use semiconductor switch device Q as metal-oxide-semiconductor, triode etc. or hand switch, the coil power supply of control relay RY carrys out closure and the disjunction of control relay RY contact.
Because the pull-in winding of relay, contactor is inductive load, the electric current that flows through inductance can not suddenly change.When the switching device Q that controls power supply turn-offs, if there is no continuous current circuit, according to U=di/t, electric current sharply reduces can produce higher induced voltage.On the contact of switching device Q below this voltage drops on, may cause the phenomenons such as switching device Q punctures, contact sparking.Therefore a general sustained diode in parallel on relay R Y coil, prevents above-mentioned phenomenon.
Conventional relay/contactor control circuit has higher requirements to the breaking speed of the relay R Y-contact of controlling in some application scenario.The contactor of the connection electrical network in UPS application for example, grid cut-off back loading will switch to islet operation, for the supply power voltage of proof load is not subject to grid cut-off affect and fall, the contactor that connects electrical network need to be at electrical network disjunction in the cycle, T=1/50Hz=20ms.
And traditional circuit connecting is due on the pull-in winding at relay, contactor and have a sustained diode, although lower switch device Q disconnects when needs disjunction, but pull-in winding is perception, electric current continues to circulate in loop by sustained diode, because consuming less coil, current energy can maintain certain suction, the break-time of the relay that greatly slows down, contacts of contactor.
If but cancel sustained diode, the due to voltage spikes that relay, contactor produce while turn-offing may cause contact endurance reduction, the semiconductor switch device Q of the switching device Q that is connected on pull-in winding to puncture equivalent risk.
Utility model content
The above-mentioned technical problem that the utility model exists for solving existing relay/contactor control circuit, provides a kind of control relay circuit and contactor control circuit.
The technical solution of the utility model is:
A control relay circuit, comprising:
Switch element, described switch element and relay coil are serially connected between VDD-to-VSS;
Afterflow unit; And
Voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of relay coil after being connected in series.
Further, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, TVS pipe or piezo-resistance.
Further, described switch element is metal-oxide-semiconductor or triode.
Further, described afterflow unit is diode.
A kind of control relay circuit that the utility model provides, comprises switch element, and described switch element and relay coil are serially connected between VDD-to-VSS; Afterflow unit; And voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of relay coil after being connected in series.Because voltage stabilizing energy-absorbing unit ends during less than or equal to threshold voltage in its both end voltage, now relay coil does not form conducting loop, thereby can accelerate relay breaking speed; And when the voltage at two ends, voltage stabilizing energy-absorbing unit surpasses threshold voltage, now relay coil and afterflow cell conduction form continuous current circuit, but because voltage stabilizing energy-absorbing unit can absorb energy when the conducting, therefore also can accelerate relay breaking speed.
A contactor control circuit, comprises switch element, and described switch element and contactor coil are serially connected between VDD-to-VSS; Afterflow unit; And voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of contactor coil after being connected in series.
Further, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, TVS pipe or piezo-resistance.
Further, described switch element is metal-oxide-semiconductor or triode.
Further, described afterflow unit is diode.
A kind of contactor control circuit that the utility model provides, comprises switch element, and described switch element and contactor coil are serially connected between VDD-to-VSS; Afterflow unit; And voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of contactor coil after being connected in series.Because voltage stabilizing energy-absorbing unit ends during less than or equal to threshold voltage in its both end voltage, now contactor coil does not form conducting loop, thereby can accelerate contactor breaking speed; And when the voltage at two ends, voltage stabilizing energy-absorbing unit surpasses threshold voltage, now contactor coil and afterflow cell conduction form continuous current circuit, but because voltage stabilizing energy-absorbing unit can absorb energy when the conducting, therefore also can accelerate contactor breaking speed.
Accompanying drawing explanation
The attracting state structural representation that Fig. 1 provides for existing control relay circuit.
The disjunction status architecture schematic diagram that Fig. 2 provides for existing control relay circuit.
The structural representation of the embodiment that Fig. 3 provides for the utility model control relay circuit.
The structural representation of the embodiment that Fig. 4 provides for the utility model contactor control circuit.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In order to solve relay breaking speed that existing control relay circuit exists technical problem slowly, the utility model provides a kind of control relay circuit that can accelerate relay breaking speed, this control relay circuit comprises switch element, and described switch element and relay coil are serially connected between VDD-to-VSS; Afterflow unit; And voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of relay coil after being connected in series.
Above-mentioned voltage stabilizing energy-absorbing unit ends during less than or equal to threshold voltage in its both end voltage, and now relay coil does not form conducting loop, thereby can accelerate relay breaking speed; And when its both end voltage surpasses threshold voltage, now relay coil and afterflow cell conduction form continuous current circuit, but because voltage stabilizing energy-absorbing unit can absorb energy when the conducting, therefore also can accelerate relay breaking speed.
In concrete enforcement, described voltage stabilizing energy-absorbing unit can be voltage-stabiliser tube, TVS manages (TVS pipe is the abbreviation of Transient Voltage Suppressor) or piezo-resistance, and voltage stabilizing energy-absorbing unit can also possess the device of above-mentioned functions for other is arbitrary certainly, at this, does not enumerate.Preferably, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, so not only can play the effect of quick disjunction relay, but also can clamp the voltage in safe range to protect described switch element.
In concrete enforcement, described switch element can be metal-oxide-semiconductor (metal-oxide-semiconductor is the abbreviation of metal-oxide-semiconductor field effect transistor) or triode, and it can also possess the device of switching function for other is arbitrary certainly, at this, does not enumerate.Described afterflow unit can be diode.
The utility model provides also provides a kind of contactor control circuit, comprises switch element, and described switch element and contactor coil are serially connected between VDD-to-VSS; Afterflow unit; And voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of contactor coil after being connected in series.
Above-mentioned voltage stabilizing energy-absorbing unit ends during less than or equal to threshold voltage in its both end voltage, and now contactor coil does not form conducting loop, thereby can accelerate contactor breaking speed; And when its both end voltage surpasses threshold voltage, now contactor coil and afterflow cell conduction form continuous current circuit, but because voltage stabilizing energy-absorbing unit can absorb energy when the conducting, therefore also can accelerate contactor breaking speed.
In concrete enforcement, described voltage stabilizing energy-absorbing unit can be voltage-stabiliser tube, TVS manages (TVS pipe is the abbreviation of Transient Voltage Suppressor) or piezo-resistance, and voltage stabilizing energy-absorbing unit can also possess the device of above-mentioned functions for other is arbitrary certainly, at this, does not enumerate.Preferably, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, so not only can play the effect of quick disjunction contactor, but also can clamp the voltage in safe range to protect described switch element.
In concrete enforcement, described switch element can be metal-oxide-semiconductor (metal-oxide-semiconductor is the abbreviation of metal-oxide-semiconductor field effect transistor) or triode, and it can also possess the device of switching function for other is arbitrary certainly, at this, does not enumerate.Described afterflow unit can be diode.
In order to understand better and to implement the technical solution of the utility model, below by embodiment form by reference to the accompanying drawings, the technical solution of the utility model is described further.
As shown in Figure 3, control relay circuit comprises power supply VCC, metal-oxide-semiconductor Q1, diode D1 and voltage-stabiliser tube D2, described metal-oxide-semiconductor Q1 and relay R Y coil tandem, between power supply VCC and ground GND, are attempted by the two ends of relay R Y coil after described voltage-stabiliser tube D2 and diode D1 serial connection.Voltage-stabiliser tube D2 ends during less than or equal to threshold voltage in its both end voltage, and now relay R Y coil does not form conducting loop, thereby can accelerate relay R Y breaking speed; And when its both end voltage surpasses threshold voltage; now relay R Y coil and diode D1 conducting forms continuous current circuit; but because voltage-stabiliser tube D2 can absorb energy in ON time; therefore also can accelerate relay R Y breaking speed; and voltage-stabiliser tube D2 can also clamp the voltage in safe range with protection metal-oxide-semiconductor Q1.
When metal-oxide-semiconductor Q1 receives cut-off signals, metal-oxide-semiconductor Q1 disconnects, and the pull-in winding sense of current on relay R Y can not suddenly change, through diode D1 afterflow.Now voltage-stabiliser tube D2 oppositely ends and there is no continuous current circuit, if the peak voltage producing is less than or equal to the Zener breakdown voltage of selected voltage-stabiliser tube D2, the voltage that metal-oxide-semiconductor Q1 bears is safe, and now relay R Y coil does not form conducting loop, thereby can accelerate relay R Y breaking speed; If surpass puncture voltage, the Zener breakdown of voltage-stabiliser tube D2 clamps the voltage at voltage stabilizing value, and consumes the energy of adhesive inductive current, makes the quick disjunction of relay R Y-contact.
The control relay circuit of the present embodiment comprises power supply VCC, metal-oxide-semiconductor Q1, diode D1 and voltage-stabiliser tube D2, described metal-oxide-semiconductor Q1 and relay R Y coil tandem, between power supply VCC and ground GND, are attempted by the two ends of relay R Y coil after described voltage-stabiliser tube D2 and diode D1 serial connection.So not only owing to thering is the diode D1 of afterflow effect, thereby can prevent that the due to voltage spikes producing when relay R Y turn-offs from may cause the contact endurance of metal-oxide-semiconductor QI to reduce, puncture equivalent risk, guaranteed the safety of metal-oxide-semiconductor Q1; And, simultaneously owing to also thering is voltage-stabiliser tube D2, thereby played the effect that makes the quick disjunction of relay R Y-contact.
As shown in Figure 4, contactor control circuit comprises power supply VCC, metal-oxide-semiconductor Q1, diode D1 and voltage-stabiliser tube D2, described metal-oxide-semiconductor Q1 and contactor KM coil tandem, between power supply VCC and ground GND, are attempted by the two ends of contactor KM coil after described voltage-stabiliser tube D2 and diode D1 serial connection.Voltage-stabiliser tube D2 ends during less than or equal to threshold voltage in its both end voltage, and now contactor KM coil does not form conducting loop, thereby can accelerate contactor KM breaking speed; And when its both end voltage surpasses threshold voltage; now contactor KM coil and diode D1 conducting forms continuous current circuit; but because voltage-stabiliser tube D2 can absorb energy when the conducting; therefore also can accelerate contactor KM breaking speed; and voltage-stabiliser tube D2 can also clamp the voltage in safe range with protection metal-oxide-semiconductor Q1.
When metal-oxide-semiconductor Q1 receives cut-off signals, metal-oxide-semiconductor Q1 disconnects, and the pull-in winding sense of current on contactor KM can not suddenly change, through diode D1 afterflow.Now voltage-stabiliser tube D2 oppositely ends and there is no continuous current circuit, if the peak voltage producing is less than or equal to the Zener breakdown voltage of selected voltage-stabiliser tube D2, the voltage that metal-oxide-semiconductor Q1 bears is safe, and now contactor KM coil does not form conducting loop, thereby can accelerate contactor KM breaking speed; If surpass puncture voltage, the Zener breakdown of voltage-stabiliser tube D2 clamps the voltage at voltage stabilizing value, and consumes the energy of adhesive inductive current, makes the quick disjunction in contactor KM contact.
The contactor control circuit of the present embodiment comprises power supply VCC, metal-oxide-semiconductor Q1, diode D1 and voltage-stabiliser tube D2, described metal-oxide-semiconductor Q1 and contactor KM are serially connected between power supply VCC and ground GND, are attempted by the two ends of contactor KM coil after described voltage-stabiliser tube D2 and diode D1 serial connection.So not only owing to thering is the diode D1 of afterflow effect, thereby can prevent that the due to voltage spikes producing when contactor KM turn-offs from may cause the contact endurance of metal-oxide-semiconductor QI to reduce, puncture equivalent risk, guaranteed the safety of metal-oxide-semiconductor Q1; And, simultaneously owing to thering is voltage-stabiliser tube D2, thereby played the effect that makes the quick disjunction in contactor KM contact.
Be understandable that, the control relay circuit that the utility model is mentioned and contactor control circuit, its technical scheme is basic identical, therefore, the control relay circuit scheme of above-mentioned arbitrary embodiment can be applied to contactor.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a control relay circuit, is characterized in that, comprising:
Switch element, described switch element and relay coil are serially connected between VDD-to-VSS;
Afterflow unit; And
Voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of relay coil after being connected in series.
2. control relay circuit according to claim 1, is characterized in that, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, TVS pipe or piezo-resistance.
3. control relay circuit according to claim 1, is characterized in that, described switch element is metal-oxide-semiconductor or triode.
4. according to the control relay circuit described in claim 1-3 any one, it is characterized in that, described afterflow unit is diode.
5. a contactor control circuit, is characterized in that, comprising:
Switch element, described switch element and contactor coil are serially connected between VDD-to-VSS;
Afterflow unit; And
Voltage stabilizing energy-absorbing unit, described voltage stabilizing energy-absorbing unit and afterflow unit are attempted by the two ends of contactor coil after being connected in series.
6. contactor control circuit according to claim 5, is characterized in that, described voltage stabilizing energy-absorbing unit is voltage-stabiliser tube, TVS pipe or piezo-resistance.
7. contactor control circuit according to claim 5, is characterized in that, described switch element is metal-oxide-semiconductor or triode.
8. according to the contactor control circuit described in claim 5-7 any one, it is characterized in that, described afterflow unit is diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591604.9U CN203521321U (en) | 2013-09-25 | 2013-09-25 | Relay control circuit and contactor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591604.9U CN203521321U (en) | 2013-09-25 | 2013-09-25 | Relay control circuit and contactor control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521321U true CN203521321U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320591604.9U Expired - Lifetime CN203521321U (en) | 2013-09-25 | 2013-09-25 | Relay control circuit and contactor control circuit |
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| Country | Link |
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| CN (1) | CN203521321U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402471A (en) * | 2015-12-18 | 2016-03-16 | 无锡隆盛科技股份有限公司 | Oil injection electromagnetic valve drive circuit for drive current to be rapidly stopped |
| CN105788968A (en) * | 2015-01-14 | 2016-07-20 | 通用电气公司 | Systems And Methods For Freewheel Contactor Circuits |
| CN106252158A (en) * | 2016-09-19 | 2016-12-21 | 北京新能源汽车股份有限公司 | A kind of electromagnetic relay circuit |
| CN109818338A (en) * | 2017-11-22 | 2019-05-28 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method |
| CN110265262A (en) * | 2019-05-31 | 2019-09-20 | 昂宝电子（上海）有限公司 | Driving circuit and quick demagnetizing method for inductive relay |
-
2013
- 2013-09-25 CN CN201320591604.9U patent/CN203521321U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788968A (en) * | 2015-01-14 | 2016-07-20 | 通用电气公司 | Systems And Methods For Freewheel Contactor Circuits |
| CN105788968B (en) * | 2015-01-14 | 2019-12-27 | Abb瑞士股份有限公司 | System and method for a freewheeling contactor circuit |
| CN105402471A (en) * | 2015-12-18 | 2016-03-16 | 无锡隆盛科技股份有限公司 | Oil injection electromagnetic valve drive circuit for drive current to be rapidly stopped |
| CN106252158A (en) * | 2016-09-19 | 2016-12-21 | 北京新能源汽车股份有限公司 | A kind of electromagnetic relay circuit |
| CN109818338A (en) * | 2017-11-22 | 2019-05-28 | 湖南中车时代电动汽车股份有限公司 | A kind of circuit protection device and method |
| CN110265262A (en) * | 2019-05-31 | 2019-09-20 | 昂宝电子（上海）有限公司 | Driving circuit and quick demagnetizing method for inductive relay |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |