CN109065409A - Driving circuit, ON-OFF control circuit and cooking apparatus - Google Patents
Driving circuit, ON-OFF control circuit and cooking apparatus Download PDFInfo
- Publication number
- CN109065409A CN109065409A CN201811005811.5A CN201811005811A CN109065409A CN 109065409 A CN109065409 A CN 109065409A CN 201811005811 A CN201811005811 A CN 201811005811A CN 109065409 A CN109065409 A CN 109065409A
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- Prior art keywords
- branch
- switch
- driving
- relay
- driving circuit
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- 238000010411 cooking Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
Landscapes
- Relay Circuits (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a kind of driving circuit, ON-OFF control circuit and cooking apparatus.Driving circuit includes driving signal input, high-voltage end, low-pressure end and at least two switching branches, every switching branches are connected with driving signal input, at least two switching branches include first switch branch and second switch branch, first switch branch is connected by the first connection branch with high-voltage end, second switch branch is connected with low-pressure end, it is connected between switching branches by the second connection branch, in switching branches and the first connection branch road is provided with component, component can control the electric current of branch road where it, driving circuit is configured to, when any one failure in component, in the case where non-active driving, electricity piece will not act, to guarantee the reliability of circuit, it is particularly suitable on exported product.
Description
Technical field
The present invention relates to field of circuit control, especially a kind of driving circuit, ON-OFF control circuit and cooking apparatus.
Background technique
Existing relay drive circuit is usually driving circuit as shown in Figure 1, mainly uses a NPN triode
The PNP pipe of power end is controlled, in the circuit, if one of triode short circuit punctures, such as PNP pipe short circuit breakdown, then
Even if the coil of relay can be also attracted without square wave driving signal, maloperation is caused, security performance is poor.
Summary of the invention
In view of this, one of the objects of the present invention is to provide a kind of driving circuit, ON-OFF control circuit and cooking apparatus,
To overcome the problems, such as that a component damage may make relay to be attracted in circuit existing in the prior art, safety is poor.
In order to achieve the above objectives, on the one hand, the present invention adopts the following technical scheme:
A kind of driving circuit, for the driving circuit for driving electricity piece to act, the driving circuit includes driving signal
Input terminal, high-voltage end, low-pressure end and at least two switching branches, every switching branches are inputted with the driving signal
End is connected, and at least two switching branches include first switch branch and second switch branch, and the first switch branch is logical
It crosses the first connection branch to be connected with the high-voltage end, the second switch branch is connected with the low-pressure end, between switching branches
It is connected by the second connection branch, in the switching branches and the first connection branch road is provided with component, first device
Part can control the electric current of branch road where it, and the driving circuit is configured to, when any one in the component
When a failure, in the case where non-active driving, the electricity piece will not be acted.
Preferably, the component being arranged on first switch branch road includes the first triode and the first unidirectional element,
First unidirectional element is arranged between first triode and the driving signal input, first unidirectional element
Only electric current is allowed to be flowed from the driving signal input to first triode direction.
Preferably, the collector of first triode connect branch with described first and is connected, and emitter passes through described the
Two connection branches are connected with the second switch branch, and base stage is connected with first unidirectional element.
Preferably, the component being arranged on second switch branch road includes the second triode.
Preferably, the collector of second triode passes through the second connection branch and the first switch branch phase
Even, emitter is connected with the low-pressure end, and base stage is connected with the driving signal input.
Preferably, the component being arranged on first connection branch road includes the second unidirectional element, and described second is unidirectional
Element only allows the direction of electric current high-voltage end as described in the first switch Zhi Luxiang to flow.
Preferably, the electricity piece includes relay, and the coil of the relay connect branch circuit parallel connection with described first and sets
It sets.
On the other hand, the present invention adopts the following technical scheme:
A kind of ON-OFF control circuit, including relay and driving circuit as described above, the driving circuit is for controlling
The switch of the relay.
Preferably, the relay is provided with one, and the relay controls the switch of firewire and zero curve simultaneously, it is described after
Electric appliance is controlled by a driving circuit；Alternatively,
There are two the relay settings, and two relays control the switch of firewire and zero curve, two relays respectively
Device is controlled by a driving circuit；Alternatively,
There are two the relay settings, and two relays control the switch of firewire and zero curve, two relays respectively
Device is controlled by two driving circuits respectively.
Preferably, the ON-OFF control circuit further includes detection branch, for detecting the switch state of the relay.
Preferably, photoelectrical coupler and test side, the photoelectrical coupler and the fire are provided in the detection branch
Line and the zero curve are connected.
In another aspect, the present invention adopts the following technical scheme:
A kind of cooking apparatus, including ON-OFF control circuit as described above.
Preferably, the cooking apparatus includes electric cooker or electric pressure cooking saucepan.
In driving circuit provided by the invention, switching branches are connected with driving signal input, when appointing in component
It anticipates one when failing, in the case where non-active driving, electricity piece will not be acted, to guarantee the reliability of circuit, especially
It is suitable on exported product.
Detailed description of the invention
By referring to the drawings to the description of the embodiment of the present invention, the above and other purposes of the present invention, feature and
Advantage will be apparent from, in the accompanying drawings:
Fig. 1 shows the ON-OFF control circuit figure of specific embodiment of the invention offer.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.In order to
It avoids confusion essence of the invention, there is no narrations in detail for well known method, process, process, element.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar
Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains
Justice.
In the description of the present invention, it is to be understood that, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
It is two or more.
This application provides a kind of driving circuit and with the ON-OFF control circuit of the driving circuit, driving circuit is used for
Drive electricity piece movement, below the application mainly by electricity piece be relay for introduce driving circuit and ON-OFF control circuit
Specific embodiment, it is, of course, understood that it is also applied for the drive actions to other electricity pieces.
As shown in Figure 1, driving circuit includes driving signal input, high-voltage end, low-pressure end and two switching branches, divide
Not Wei first switch branch and second switch branch, every switching branches are connected with driving signal input, first switch branch
Road is connected by the first connection branch with high-voltage end (power end shown in for example, Fig. 1), and the coil of relay and first connects
Branch circuit parallel connection setting is connect, second switch branch is connected with low-pressure end (ground terminal shown in for example, Fig. 1), first switch branch
It is connected between second switch branch by the second connection branch, in switching branches and the first connection branch road is provided with member
Device, component can control the electric current of branch road where it, and driving circuit is configured to, when any one in component
When a failure (it is understood that failure herein refers to so that circuit bidirectionally conductive), in the case where non-active driving
(i.e. in the case where driving signal input does not have input drive signal), electricity piece will not act, i.e. the line of relay
Circle will not be powered, therefore relay will not be attracted, in this way, ensure that the security reliability of circuit, be particularly suitable for exported product
On.
Wherein, it includes the first triode Q1 and the first unidirectional element that component on first switch branch road, which is arranged in, and first
Unidirectional element is arranged between the first triode Q1 and driving signal input, and the first unidirectional element only allows circuit to be believed by driving
Number input terminal is flowed to the first direction triode Q1, and the first unidirectional element is, for example, diode D3, the current collection of the first triode Q1
Pole connect branch with first and is connected, and then is connected to power end, and emitter is connected by the second connection branch with second switch branch,
Base stage is connected with diode D3, and is finally connected to driving signal input, so that the relay of driving signal input input drives
Dynamic square wave can be input to the base stage of the first triode Q1, so that the first triode Q1 is connected.
The component being arranged on second switch branch road includes the second triode Q2, and the collector of the second triode Q2 passes through
Second connection branch is connected with first switch branch, and then is connected to the emitter of the first triode Q2, emitter and ground terminal phase
Even, base stage is connected with driving signal input, and the relay driving square wave that driving signal input is inputted is input to
The base stage of second triode Q2, so that the second triode Q2 is connected.
It is understood that the first triode Q1 and the second triode Q2 other can also can be realized class by mos pipe etc.
It is substituted like the component of function.
Be arranged in first connection branch road on component include the second unidirectional element, the second unidirectional element only allow electric current by
The direction of first switch Zhi Luxiang high-voltage end is flowed, and the second unidirectional element is, for example, diode D4.
In this way, when any component such as the first triode Q1 failure (such as short circuit breakdown occurs), relay
On coil will not galvanization, therefore relay will not be attracted, thus ensure that driving circuit using safe.
It is, of course, understood that switching branches are not limited to that above-mentioned first switch branch, second switch branch is arranged
It two, may be set to be three or more, increased between first switch branch and second switch branch and by second
It connects branch to be connected, when switching branches are set as three, can make when any two failure in component,
In the case where non-active driving, electricity piece will not be acted.
Further, rectification filter is provided between driving signal input and first switch branch, second switch branch
Wave circuit, including capacitor C1, diode D1, diode D2 and electrolytic capacitor EC1, relay driving square wave pass through the rectifying and wave-filtering
A fixed voltage is exported after circuit, which can drive the first triode Q1 and the second triode Q2 simultaneously.
Further, first switch branch road is provided with divider resistance, i.e. resistance R4 shown in Fig. 1, second switch branch
Road be provided with divider resistance and shunt circuit, i.e., resistance R1, resistance R2 and resistance R3 shown in figure, wherein resistance R1 and
Resistance R2 is used to drive relay, and resistance R3 is used to discharge to electrolytic capacitor EC1.
Further, present invention also provides a kind of ON-OFF control circuits, as shown in Figure 1, the ON-OFF control circuit includes
Relay and above-mentioned driving circuit, driving circuit are used to control the switch of relay, and relay for example can control electric appliance
The opening and closing of firewire and zero curve, relay can be set to one, and relay controls the switch of firewire and zero curve, relay simultaneously at this time
Device is controlled by a driving circuit.
Preferably, as shown in Figure 1, there are two relay settings, respectively relay K1 and relay K2, two relays
The switch of firewire and zero curve is controlled respectively, wherein relay K1 controls the switch of firewire, and relay K2 controls the switch of zero curve,
Relay K1 and relay K2 is controlled by a driving circuit.
It is further preferred that two relays are controlled by two driving circuits respectively, that is, two driving electricity of setting
Road, the opening and closing of one of driving circuit control relay K1, another driving circuit control the opening and closing of relay K2, in this way,
Even if two components on a driving circuit fail, such as the first triode Q1 and the two or three on a driving circuit
Short-circuit breakdown has occurred in pole pipe Q2, the relay closure being only connected at this time with the driving circuit, that is to say, that only firewire
Or one line of zero curve is connected, and what another line still disconnected, it can not also be formed into a loop in this way, reach the effect of double volume mistake
Fruit.
Further, ON-OFF control circuit further includes detection branch, for detecting the switch state of relay, according to relay
The switch state of device judges whether relay is normally attracted, and further increases the safety of circuit.That is, when detection branch detects
Occur accidentally to be attracted (i.e. relay occurs accidentally to be attracted in the case where driving signal input non-input drive signal) to relay
When, determine that the component on relay either driving circuit is damaged, to guarantee that related personnel can have found in time
Problem improves the safety and reliability of circuit.
In a specific embodiment, photoelectrical coupler U1 and test side are provided in detection branch, test side is for example
It is chip I/O mouthfuls, photoelectrical coupler U1 is connected through the first branch with firewire, is connected through second branch with zero curve, through third branch
It is connected with+5V power end, is connected through the 4th branch with chip I/O mouthfuls, in this way, after firewire and zero curve are also turned on, photoelectricity coupling
The control terminal of clutch U1 is connected, and high level is able to detect that for chip I/O mouthfuls at this time, if driving signal input does not input drive at this time
Dynamic signal then illustrates that relay has occurred damage either driving circuit and damaged.Wherein, it is provided in the first branch point
Piezoresistance R5, the 4th road are provided with divider resistance R7 and shunt resistance R6, shunt resistance R6 ground connection.
Further, present invention also provides a kind of cooking apparatus, including above-mentioned ON-OFF control circuit, to ensure that
The safety and reliability of cooking apparatus.Cooking apparatus for example can pass through electrically heated mode for electric cooker, electric pressure cooking saucepan etc.
The utensil that food is cooked.
Those skilled in the art will readily recognize that above-mentioned each preferred embodiment can be free under the premise of not conflicting
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is merely exemplary, and not restrictive, without departing from of the invention basic
In the case where principle, those skilled in the art can be directed to the various apparent or equivalent modification or replace that above-mentioned details is made
It changes, is all included in scope of the presently claimed invention.
Claims (13)
1. a kind of driving circuit, for driving electricity piece to act, which is characterized in that the driving circuit includes driving signal input
End, high-voltage end, low-pressure end and at least two switching branches, every switching branches with the driving signal input phase
Even, at least two switching branches include first switch branch and second switch branch, and the first switch branch passes through the
One connection branch is connected with the high-voltage end, and the second switch branch is connected with the low-pressure end, at least two switch
It is connected between branch by the second connection branch, at least two switching branches and the first connection branch road is all provided with
It is equipped with component, the component can control the electric current of branch road where it, and the driving circuit is configured to, and works as institute
When stating any one failure in component, in the case where non-active driving, the electricity piece will not be acted.
2. driving circuit according to claim 1, which is characterized in that the component on first switch branch road is arranged in
Including the first triode and the first unidirectional element, the first unidirectional element setting is believed in first triode and the driving
Between number input terminal, first unidirectional element only allows electric current from the driving signal input to the first triode side
To flowing.
3. driving circuit according to claim 2, which is characterized in that the collector of first triode and described first
It connects branch to be connected, emitter is connected by the second connection branch with the second switch branch, base stage and described first
Unidirectional element is connected.
4. driving circuit according to claim 1, which is characterized in that the component on second switch branch road is arranged in
Including the second triode.
5. driving circuit according to claim 4, which is characterized in that the collector of second triode passes through described the
Two connection branches are connected with the first switch branch, and emitter is connected with the low-pressure end, and base stage and the driving signal are defeated
Enter end to be connected.
6. driving circuit according to claim 1, which is characterized in that the component on first connection branch road is arranged in
Including the second unidirectional element, second unidirectional element only allows the side of electric current high-voltage end as described in the first switch Zhi Luxiang
To flowing.
7. driving circuit according to one of claims 1 to 6, which is characterized in that the electricity piece includes relay, described
The coil of relay connect branch circuit parallel connection setting with described first.
8. a kind of ON-OFF control circuit, which is characterized in that the driving electricity including relay and as described in one of claim 1 to 7
Road, the driving circuit are used to control the switch of the relay.
9. ON-OFF control circuit according to claim 8, which is characterized in that the relay is provided with one, it is described after
Electric appliance controls the switch of firewire and zero curve simultaneously, and the relay is controlled by a driving circuit；Alternatively,
There are two relay settings, and two relays control the switch of firewire and zero curve respectively, two relays by
One driving circuit is controlled；Alternatively,
There are two the relay settings, and two relays control the switch of firewire and zero curve, two relays point respectively
It is not controlled by two driving circuits.
10. ON-OFF control circuit according to claim 9, which is characterized in that the ON-OFF control circuit further includes detection
Branch, for detecting the switch state of the relay.
11. ON-OFF control circuit according to claim 10, which is characterized in that be provided with photoelectricity coupling in the detection branch
Clutch and test side, the photoelectrical coupler are connected with the firewire and the zero curve.
12. a kind of cooking apparatus, which is characterized in that including the ON-OFF control circuit as described in one of claim 8 to 11.
13. cooking apparatus according to claim 12, which is characterized in that the cooking apparatus includes electric cooker or Voltage force
Pot.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811005811.5A CN109065409A (en) | 2018-08-30 | 2018-08-30 | Driving circuit, ON-OFF control circuit and cooking apparatus |
| PCT/CN2018/122877 WO2020042473A1 (en) | 2018-08-30 | 2018-12-21 | Driver circuit, switch control circuit, and cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811005811.5A CN109065409A (en) | 2018-08-30 | 2018-08-30 | Driving circuit, ON-OFF control circuit and cooking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109065409A true CN109065409A (en) | 2018-12-21 |
Family
ID=64758068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811005811.5A Pending CN109065409A (en) | 2018-08-30 | 2018-08-30 | Driving circuit, ON-OFF control circuit and cooking apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109065409A (en) |
| WO (1) | WO2020042473A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5467248A (en) * | 1993-01-19 | 1995-11-14 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Relay control circuit |
| US20050027375A1 (en) * | 2003-07-31 | 2005-02-03 | Gonzalo Fernandez | Failsafe control circuit for electrical appliances |
| CN202996719U (en) * | 2012-11-13 | 2013-06-12 | 佛山市顺德区瑞德电子实业有限公司 | Relay drive circuit with double protection loops |
| CN104110800A (en) * | 2013-06-26 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner, and on-off control method and on-off control system for resistive load |
| CN205752025U (en) * | 2016-04-01 | 2016-11-30 | 浙江苏泊尔家电制造有限公司 | Relay drive circuit and relay circuit |
| CN207381964U (en) * | 2017-10-18 | 2018-05-18 | 深圳市赛源电气技术有限公司 | The protective device of power capacitor noncontacting switch |
| CN208834987U (en) * | 2018-08-30 | 2019-05-07 | 珠海格力电器股份有限公司 | Driving circuit, ON-OFF control circuit and cooking apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201629560U (en) * | 2008-12-05 | 2010-11-10 | 刘圣平 | High-reliability out-of-control preventive composite temperature control circuit |
| CN207352377U (en) * | 2017-10-23 | 2018-05-11 | 九阳股份有限公司 | The anti-jamming circuit and cooking apparatus of a kind of cooking apparatus |
-
2018
- 2018-08-30 CN CN201811005811.5A patent/CN109065409A/en active Pending
- 2018-12-21 WO PCT/CN2018/122877 patent/WO2020042473A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5467248A (en) * | 1993-01-19 | 1995-11-14 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Relay control circuit |
| US20050027375A1 (en) * | 2003-07-31 | 2005-02-03 | Gonzalo Fernandez | Failsafe control circuit for electrical appliances |
| CN202996719U (en) * | 2012-11-13 | 2013-06-12 | 佛山市顺德区瑞德电子实业有限公司 | Relay drive circuit with double protection loops |
| CN104110800A (en) * | 2013-06-26 | 2014-10-22 | 广东美的制冷设备有限公司 | Air conditioner, and on-off control method and on-off control system for resistive load |
| CN205752025U (en) * | 2016-04-01 | 2016-11-30 | 浙江苏泊尔家电制造有限公司 | Relay drive circuit and relay circuit |
| CN207381964U (en) * | 2017-10-18 | 2018-05-18 | 深圳市赛源电气技术有限公司 | The protective device of power capacitor noncontacting switch |
| CN208834987U (en) * | 2018-08-30 | 2019-05-07 | 珠海格力电器股份有限公司 | Driving circuit, ON-OFF control circuit and cooking apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020042473A1 (en) | 2020-03-05 |
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