CN205319929U - Low -power consumption standby device and electrical equipment - Google Patents
Low -power consumption standby device and electrical equipment Download PDFInfo
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- CN205319929U CN205319929U CN201521083468.8U CN201521083468U CN205319929U CN 205319929 U CN205319929 U CN 205319929U CN 201521083468 U CN201521083468 U CN 201521083468U CN 205319929 U CN205319929 U CN 205319929U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses an electrical equipment who has the switch door is applied to to low -power consumption standby device, and low -power consumption standby device includes power module and control module. Power module includes transformer, power control chip, feedback module, awakens the module up, feedback module is located the secondary side of transformer to be connected with the output of secondary side and power control chip's feedback port, power control chip is connected with the primary side winding of transformer, awaken the primary side that the module is located the transformer up to be connected with power control chip's the port that awakens up, be used for when electrical equipment's switch door is opened, produce and awaken the signal up, the shutdown module that control module includes main control chip, is connected with main control chip, main control chip produces shutdown control signal to it feeds back to power control chip to make the shutdown module pass through feedback module. The utility model also discloses an electrical equipment that applied this the low -power consumption standby device of. The utility model discloses not only reduce the stand -by power consumption, but also awaken the convenience up.
Description
Technical field
The utility model relates to the Opportunity awaiting control for linear field of electrical equipment, particularly relates to low-power dissipation standby device and electrical equipment.
Background technology
Existing electronic product is still consuming electric energy in the standby state, generally, it may also be useful to the standby power consumption of linear transformer scheme is 2W, and the standby power consumption using switch power supply scheme can accomplish below 1W. Existing electrical equipment all has standby control apparatus, and when electrical equipment does not use, this standby control apparatus will cut off load supply. But, owing to user is in order to avoid the trouble of socket power line, although electrical equipment does not work, but the supply lead of electrical equipment keeps connection state always, and namely standby control apparatus is unanimously in running order, will consume corresponding energy consumption. If standby chronic of electrical equipment, then in this process, waste many electric energy.
Practical novel content
Main purpose of the present utility model is to provide a kind of low-power dissipation standby device and electrical equipment, it is intended to not only reduces standby power consumption, but also wakes up conveniently.
For achieving the above object, the utility model additionally provides a kind of low-power dissipation standby device, is applied in the electrical equipment with switch door, and described low-power dissipation standby device comprises power supply module and control module; Wherein,
Described power supply module comprises transformer, power supply control chip, feedback module, wake module; Described feedback module is positioned at the primary side of described transformer, and is connected with the output terminal of primary side, for gathering the voltage output signal of primary side, and the voltage output signal gathered feeds back to the feedback port of described power supply control chip; The primary side winding switching of power supply control chip and described transformer, for controlling conducting and the disconnection of described transformer, and adjusts the conducting dutycycle of described transformer according to feedback signal;Described wake module is positioned at the primary side of described transformer, and is connected with the port that wakes up of described power supply control chip, for when the switch door of electrical equipment is opened, producing wake-up signal;
Described control module comprises the shutdown module that master control chip is connected with described master control chip; Master control chip produces to close machine control signal, and described shutdown module and described feedback module, be passed to feedback module by pass machine control signal, with by feeding back module feedback to power supply control chip, so that power supply control chip enters dormancy or protection state.
Preferably, described shutdown module comprises the first switching tube, and the base stage of described first switching tube is connected with an output port of described master control chip;
Described feedback module comprises the first optocoupler, the first resistance, the 2nd resistance, voltage stabilizing tube; The corresponding feedback port with described power supply control chip of first output port of described first optocoupler and the 2nd output port with wake port up and be connected; The collector electrode of the first switching tube is connected with the first input port of the first optocoupler through the first resistance, and collector electrode is also connected with the 2nd input port of the first optocoupler; The grounded emitter of the first switching tube; The positive pole of voltage stabilizing tube is connected with the emtting electrode of the first switching tube, and negative pole is connected with the collector electrode of the first switching tube; First input port of the first optocoupler is also connected through a voltage output end of the 2nd resistance with the primary side of described transformer.
Preferably, described shutdown module comprises the first switching tube, and the base stage of described first switching tube is connected with an output port of master control chip;
Described feedback module comprises the first optocoupler, the first resistance, the 2nd resistance, voltage stabilizing tube; The corresponding feedback port with described power supply control chip of first output port of the first optocoupler and the 2nd output port with wake port up and be connected; The collector electrode of the first switching tube is connected with the first input port of the first optocoupler through the first resistance, and collector electrode is also connected with the 2nd input port of the first optocoupler; The emtting electrode of described first switching tube is through the 2nd resistance ground connection; The positive pole of voltage stabilizing tube is connected with the emtting electrode of the first switching tube, and negative pole is connected with the collector electrode of the first switching tube; First input port of the first optocoupler and the connection node of the first resistance also voltage output end with the primary side of described transformer be connected.
Preferably, described wake module comprises the first electric capacity, the 2nd electric capacity, the 2nd switching tube, door switch, the 3rd resistance, the 4th resistance, the 5th resistance, the first diode; The first end of the auxiliary winding of described transformer is connected with the port that wakes up of described power supply control chip through the 5th resistance, the first diode; One end of first electric capacity is connected with the port that wakes up of described power supply control chip, the other end ground connection; The emtting electrode of the 2nd switching tube is connected with the port that wakes up of described power supply control chip, the other end ground connection; After the base stage of the 2nd switching tube connects described door switch, through the shunt circuit ground connection of the 2nd electric capacity and the 3rd resistance; The base stage of the 2nd switching tube is also connected with the port that wakes up of described power supply control chip through the 4th resistance.
Preferably, described wake module comprises: the first electric capacity, the 2nd electric capacity, the 3rd switching tube, the 4th switching tube, door switch, the 3rd resistance, the 4th resistance, the 5th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the first diode; One end of first electric capacity is connected with the port that wakes up of described power supply control chip, the other end ground connection; The emtting electrode of the 3rd switching tube is connected with the port that wakes up of described power supply control chip, and collector electrode is connected with the emtting electrode of described 4th switching tube, the grounded collector of described 4th switching tube; 8th resistance one end is connected with the emtting electrode of described 3rd switching tube, and the other end is connected with the collector electrode of described 3rd switching tube;
The first end of the auxiliary winding of described transformer is connected with the port that wakes up of described power supply control chip through the 5th resistance, the first diode;Base stage one tunnel the 4th resistance of the 3rd switching tube is connected with the port that wakes up of described power supply control chip, after another road connects described door switch, through the shunt circuit ground connection of the 2nd electric capacity and the 3rd resistance; The first end of the auxiliary winding of described transformer also ground connection after the 9th resistance and the tenth resistance successively, and the connection node of the 9th resistance and the tenth resistance is connected with the base stage of described 4th switching tube.
Preferably, described wake-up circuit also comprises the 6th resistance, the 7th resistance; The first end of the auxiliary winding of described transformer is also successively through the 7th resistance, the 6th resistance ground connection, and the connection node of the 7th resistance and the 6th resistance is connected with the feedback port of described power supply control chip.
Preferably, described wake-up circuit also comprises the 3rd electric capacity, and described one end of 3rd electric capacity is connected with the feedback port of described power supply control chip, and the other end is connected with the port that wakes up of described power supply control chip.
Preferably, described low-power dissipation standby device also comprises:
Super-zero control module, one end is connected with wake module, and the other end is connected with the zero passage signal generator module of control module, and for the working order according to power supply control chip, control zero passage signal generator module is opened or closed.
Preferably, described Super-zero control module comprises the first chemical capacitor, the 2nd optocoupler, the 11 resistance; First chemical capacitor is just holding the first end of the auxiliary winding with transformer to be connected, the first chemical capacitor negativing ending grounding; The just end of the first chemical capacitor also after the 11 resistance, more successively through the first primary port and the 2nd primary port of the 2nd optocoupler, then ground connection; First secondary ports of the 2nd optocoupler is connected with zero line L, and second subprime port is connected with described zero passage signal generator module.
, for achieving the above object, in addition the utility model additionally provides a kind of electrical equipment, comprises switch door; Described electrical equipment also comprises automatically controlled plate and door monitoring interlocking, described automatically controlled plate is provided with the low-power dissipation standby device of said structure, and the door switch of described low-power dissipation standby device is described door monitoring interlocking, and when switch door is in pass door state, door monitoring interlocking disconnects; When the switch door of electrical equipment is in door opening state, door monitoring interlocking is closed.
The utility model embodiment by master control chip when electrical equipment is in standby state; produce to close machine control signal; and by shutdown module, pass machine control signal is passed to power supply control chip, enter protection or dormant state to control power supply control chip, thus reduce standby power consumption. Prove through test, pass through which, it is possible to make the standby power consumption can at below 5mW. In addition, the utility model embodiment is also provided with wake module in power supply module, along with the operation of electrical equipment, can realize waking up of power supply control chip. Therefore, the utility model embodiment not only reduces standby power consumption, but also wakes up conveniently.
Accompanying drawing explanation
Fig. 1 is the high-level schematic functional block diagram of the utility model low-power dissipation standby device first embodiment;
Fig. 2 is the shutdown module of the low-power dissipation standby device shown in Fig. 1 and the electrical block diagram of feedback module one embodiment;
Fig. 3 is the shutdown module of the low-power dissipation standby device shown in Fig. 1 and the electrical block diagram of feedback another embodiment of module;
Fig. 4 is the electrical block diagram of wake module one embodiment of the low-power dissipation standby device shown in Fig. 1;
Fig. 5 is the electrical block diagram of another embodiment of wake module of the low-power dissipation standby device shown in Fig. 1;
Fig. 6 is the high-level schematic functional block diagram of the utility model low-power dissipation standby device the 2nd embodiment;
Fig. 7 is the high-level schematic functional block diagram of the utility model low-power dissipation standby device the 3rd embodiment;
Fig. 8 is the electrical block diagram of the low-power dissipation standby device shown in Fig. 7;
Fig. 9 is the electrical equipment connection diagram of the microwave oven that the utility model low-power dissipation standby device is applied;
Figure 10 is the workflow schematic diagram of the utility model microwave oven.
Drawing reference numeral illustrates:
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
It is to be understood that specific embodiment described herein is only in order to explain the utility model, and it is not used in restriction the utility model.
It should be noted that, the description relating to " first ", " the 2nd " etc. in the utility model is only for describing object, and can not be interpreted as instruction or imply its relative importance or the implicit quantity indicating indicated technology feature. Thus, be limited with " first ", the feature of " the 2nd " can express or implicit comprise at least one this feature. In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this kind of technical scheme does not exist, also not the utility model require protection domain within.
The utility model proposes a kind of low-power dissipation standby device, not only can realize low-power consumption standby, but also conveniently wake up. This low-power dissipation standby device is applied to microwave oven, baking box etc. to be had switch door and has on the electrical equipment of Opportunity awaiting control for linear.
As shown in Figure 1, this low-power dissipation standby device 100 can comprise power supply module 110 and control module 120. Power supply module 110 is for receiving city's electricity, and city's electricity converts to the driving power supply of drive control module 120. Control module 120 controls the working order of each assembly in electrical equipment.
Specifically, above-mentioned power supply module 110 can comprise transformer 111, power supply control chip 112, feedback module 113, wake module 114. Transformer 111 comprises primary side and primary side. The winding of this primary side and primary side can comprise one or more groups respectively. The winding switching of power supply control chip 112 and primary side, for conducting and the disconnection of transformer 111, with by the transmission ofenergy of primary side to primary side. Feedback module 113 is positioned at primary side, and is connected with the output terminal of primary side, for gathering the voltage output signal of primary side, and the voltage output signal gathered is fed back to power supply control chip 112. Power supply control chip 112 adjusts the conducting dutycycle of power supply control chip 112 according to feedback signal, to reduce the fluctuation of the output voltage of primary side, makes the voltage output signal of primary side stable output.
This wake module 114 is positioned at the primary side of transformer 111, and is connected with the port that wakes up of power supply control chip 112. When needs wake up, wake module 114 will produce wake-up signal, to be waken up by power supply control chip 112. When power supply control chip 112 is in running order, the conducting of transformer 111 and disconnection, by the transmission ofenergy of primary side to primary side; When being in protection or dormant state, then do not work, until wake module 114 produces wake-up signal.
Above-mentioned control module 120 can comprise master control chip 121 and shutdown module 122.Master control chip 121 is receiving shutdown/standby command, or when detecting that other assemblies of electrical equipment have stopped work, produces to close machine control signal. It should be appreciated that cause erroneous judgement to prevent, this master control chip 121 is receiving shutdown/standby command, or when detecting that other assemblies of electrical equipment have stopped work, carry out timing by built-in timing register, when reaching the scheduled time, then produce to close machine control signal. Shutdown module 122 is connected with an output port of master control chip 121, to receive the pass machine control signal that this master control chip 121 exports. Pass machine control signal is transferred to power supply module 110 after receiving the pass machine control signal of master control chip 121 by shutdown module 122, so that the power supply control chip 112 in power supply module 110 enters protection or dormant state. It should be appreciated that power supply control chip 112 enters protection state or dormant state, it is possible to arrange flexibly according to concrete chip service condition, do not limit at this.
The utility model embodiment by master control chip 121 when electrical equipment is in standby state; produce to close machine control signal; and by shutdown module 122, pass machine control signal is passed to power supply control chip 111; enter protection or dormant state to control power supply control chip 111, thus reduce standby power consumption. Prove through test, pass through which, it is possible to make the standby power consumption can at below 5mW. In addition, the utility model embodiment is also provided with wake module 114 in power supply module, along with the operation of electrical equipment, can realize waking up of power supply control chip 111. Therefore, the utility model embodiment not only reduces standby power consumption, but also wakes up conveniently.
Further, as shown in Figure 2, shutdown module 122 can comprise the first switching tube Q1, and the base stage of this first switching tube Q1 is connected with an output port of master control chip 121, with the pass machine control signal conducting according to master control chip 121 or cut-off. Feedback module 113 comprises the first optocoupler IC101, the first resistance R101, the 2nd resistance R102, voltage stabilizing tube Z101. First optocoupler IC101 has four ports, i.e. the first input port (port 1), the 2nd input port (port 2), the first output port (port 3), the 2nd output port (port 4). Its middle port 3 and port 4 corresponding with power supply control chip 112 wake port (i.e. BP port) up and feedback port (i.e. FB port) is connected. The collector electrode of the first switching tube Q1 is connected with the port 2 of the first optocoupler IC101, and collector electrode is also connected through the port 1 of the first resistance R101 with the first optocoupler IC101. The grounded emitter of the first switching tube Q1. The positive pole of voltage stabilizing tube Z101 is connected with the emtting electrode of the first switching tube Q1, and negative pole is connected with the collector electrode of the first switching tube Q1. The port 1 of the first optocoupler IC101 is also connected with a voltage output end of primary side through the 2nd resistance R102.
When electrical equipment is under standard state, power supply control chip 112 normal operation, the conducting of transformer 111 and disconnection, thus realize the transmission ofenergy of primary side to primary side. The direct current signal that primary side exports is for driving master control chip 121. The direct current signal OUT that this primary side exports also will feed back to power supply control chip 112 by feedback module 113, so that the conducting dutycycle of power supply control chip 112 transformer 111, the direct current signal of stable output. It is specially: assume that an actuate signal of master control chip 121 is for+5V voltage, then when direct current signal OUT exceedes+5V, just the voltage at the first resistance R101 two ends can drive the input terminus diode of the first optocoupler IC101, thus feedback signal is passed to the FB end (i.e. feedback port) of power supply control chip 112, now power supply control chip 112 just reduces the conducting dutycycle of transformer 111;When direct current signal OUT is less than+5V, the under voltage at the first resistance R101 two ends is to drive the input terminus diode of the first optocoupler IC101, the FB end of power supply control chip 112 can't accept feedback signal, and now power supply control chip 112 just increases the conducting dutycycle of transformer 111. By feeding back the signal feedback of module 113 so that the voltage signal of primary side stable output.
When electrical equipment is in standby state, generation is closed machine control signal STB by master control chip 121, and this pass machine control signal STB is high level signal. Now, first switching tube Q1 conducting, voltage stabilizing tube Z101 short circuit, direct current signal OUT (+5V) that primary side exports is in the loop in parallel of the 2nd resistance R102, the first resistance R101 and the input terminus diode of the first optocoupler IC101, thus the first optocoupler IC101 works always, therefore the FB of power supply control chip 112 supports continued access and receives feedback signal. Power supply control chip 112 carries out timing by built-in timing register, and when this feedback signal continues the predetermined time, then power supply control chip 112 enters protection or low power consumpting state, namely stops work, reaches the object of super low standby power loss.
In another embodiment, as shown in Figure 3, shutdown module 122 can comprise the first switching tube Q1, and the base stage of this first switching tube Q1 is connected with an output port of master control chip 121, with the pass machine control signal conducting according to master control chip 121 or cut-off. Feedback module 113 comprises the first optocoupler IC101, the first resistance R101, the 2nd resistance R102, voltage stabilizing tube Z101. First optocoupler IC101 has four ports, i.e. the first input port (port 1), the 2nd input port (port 2), the first output port (port 3), the 2nd output port (port 4). Its middle port 3 and port 4 corresponding with power supply control chip 112 wake port up and feedback port is connected. The collector electrode of the first switching tube Q1 is connected with the port 2 of the first optocoupler IC101, and collector electrode is also connected through the port 1 of the first resistance R101 with the first optocoupler IC101. The emtting electrode of the first switching tube Q1 is through the 2nd resistance R102 ground connection. The positive pole of voltage stabilizing tube Z101 is connected with the emtting electrode of the first switching tube Q1, and negative pole is connected with the collector electrode of the first switching tube Q1. The port 1 of the first optocoupler IC101 and the connection node of the first resistance R101 are also connected with a voltage output end of primary side.
Shutdown module 122 and the principle of work of the signal feedback of feedback module 113 in this embodiment are similar to a upper embodiment, do not repeat at this.
Further, as shown in Figure 4, this wake-up circuit 114 can comprise: the first electric capacity C101, the 2nd electric capacity C102, the 3rd electric capacity C103, the 2nd switching tube Q2, the 3rd resistance R103, the 4th resistance R104, the 5th resistance R105, the 6th resistance R106, the 7th resistance R107, the first diode D101, the 2nd diode D102.
The armature winding of transformer 111 can comprise main winding and auxiliary winding. This auxiliary winding comprises first end and the 2nd end, and wherein first end is connected with the BP port of power supply control chip 112 through the 5th resistance R105, the first diode D101. One end of first electric capacity C101 is connected with the BP port of power supply control chip 112, the other end ground connection. The emtting electrode of the 2nd switching tube Q2 is connected with the BP port of power supply control chip 112, the other end ground connection. After the base stage of the 2nd switching tube Q2 connects a door switch DOOR, through the shunt circuit ground connection of the 2nd electric capacity C102 and the 3rd resistance R103.The base stage of the 2nd switching tube Q2 is also connected with the BP port of power supply control chip 112 through the 4th resistance R104. One end of 3rd electric capacity C103 is connected with the FB port of power supply control chip 112, and the other end is connected with the BP port of power supply control chip 112. Assist the first end of winding also successively through the 7th resistance R107, the 6th resistance R106 ground connection, and the connection node of the 7th resistance R107 and the 6th resistance R106 is connected with the FB port of power supply control chip 112. The negative pole of the 2nd diode D102 is connected with the 2nd end of auxiliary winding, plus earth.
Under electrical equipment normal operation state, the conducting of power supply control chip 112 transformer 111 and disconnection, now also generation current in auxiliary winding. The electric current of this generation is exported by first end, is divided into two-way, and the first electric capacity C101, to the BP port of power supply control chip 112, is also charged by a road the 5th resistance R105, the first diode D101 simultaneously; Another Lu Jing seven resistance R107 and the 6th resistance R106, and after the dividing potential drop of the 7th resistance R107 and the 6th resistance R106, produce voltage division signal, export the FB port of power supply control chip 112 to.
Be in protection or dormant state when electrical equipment under, power supply control chip 112 stops work, not generation current in auxiliary winding. Due to the built-in constant current source of BP port of power supply control chip 112, be therefore in protection or dormant state when electrical equipment under, the BP port of this power supply control chip 112 is high level always.
If under electrical equipment is in protection or dormant state, door switch DOOR closes, and the base stage of the 2nd switching tube Q2 is lower level. Now form pressure reduction between the emtting electrode of the 2nd switching tube Q2 and base stage, and conducting. Owing to the first electric capacity C101 is charged under being in normal operation state by electrical equipment, therefore when the 2nd switching tube Q2 conducting, the first electric capacity C101 discharges, and through the 2nd switching tube Q2, door switch DOOR, the 3rd resistance R103 ground connection, forms discharge loop. Meanwhile, the 2nd electric capacity C102 is charged. In order to make the BP port of power supply control chip 112 can receive a negative edge signal (i.e. wake-up signal), then the voltage of the first electric capacity C101 by high level rapid reduction to lower level. Due to door switch DOOR closed time, the first electric capacity C101 and the 2nd electric capacity C102 is in parallel, and therefore the 2nd electric capacity C102 can accelerate the electric discharge of the first electric capacity C101. In the present embodiment, the capacitance of the 2nd electric capacity C102 is bigger than the capacitance of the first electric capacity C101. Preferably, the capacitance of the 2nd electric capacity C102 is at least 10 times of the capacitance of the first electric capacity C101, and the such as capacitance of the first electric capacity C101 is 0.1 μ F, and the capacitance of the 2nd electric capacity C102 is 1 μ F. When BP port receives a negative edge signal, power supply control chip 112 will be waken up, and exit dormancy or protection state, rework, and electrical equipment can carry out normal operation. When power supply is from after dormancy or protection recovering state normal operation, no matter door switch DOOR disconnects or closes, and power supply control chip 112 is still in normal operation state.
In the present embodiment, the resistance of the 3rd resistance R103 can be arranged bigger than the resistance of the 4th resistance R104, so that after the 2nd switching tube Q2 conducting, the 2nd electric capacity C102 ends after it can be made to maintain for some time again, the BP port of power supply control chip 112 turns into high level again. Preferably, the resistance of the 3rd resistance R103 is at least 10 times of the resistance of the 4th resistance R104.
In addition, in order to when feeding back module 113 and export without feedback signal, ensure that the FB port of power supply control chip 112 is lower level, in the present embodiment, the resistance of the 7th resistance R107 is bigger than the resistance of the 6th resistance R106. Preferably, the resistance of the 7th resistance R107 is at least 10 times of the resistance of the 6th resistance R106, and such as the 6th resistance R106 value is 2K Ω, then the value of the 7th resistance R107 is 20K Ω. 2nd diode D102 plays half-wave rectification, and only allows positive voltage to pass through. 3rd electric capacity C103 is connected across between the BP port of power supply control chip 112 and FB port, plays filter effect.
In another embodiment, as shown in Figure 5, be with the difference of above-described embodiment, this wake module 113 by the generation of two switch controlled wake-up signals, i.e. the 3rd switching tube Q3 and the 4th switching tube Q4. The base stage of the 3rd switching tube Q3 and the connection node of the 4th resistance R104 and door switch DOOR connect, and emtting electrode is connected with the BP port of power supply control chip 112, and collector electrode is connected with the emtting electrode of the 4th switching tube Q4. The grounded collector of the 4th switching tube Q4. In addition, this wake module 113 also comprises the 8th resistance R108, the 9th resistance R109, the tenth resistance R110. One end of 8th resistance R108 is connected with the emtting electrode of the 3rd switching tube Q3, and the other end is connected with the collector electrode of the 3rd switching tube Q3. 9th resistance R109 connects with the tenth resistance R110, and one end of series circuit is connected with the first end of auxiliary winding, the other end ground connection, the connection node of the 9th resistance R109 and the tenth resistance R110 also base stage with the 4th switching tube Q4 be connected.
Under electrical equipment normal operation state, the conducting of power supply control chip 112 transformer 111 and disconnection, now also generation current in auxiliary winding. The electric current of this generation is exported by first end, is divided into three tunnels, and the first electric capacity C101, to the BP port of power supply control chip 112, is also charged by a road the 5th resistance R105, the first diode D101 simultaneously; Another Lu Jing seven resistance R107 and the 6th resistance R106 ground connection, and after the dividing potential drop of the 7th resistance R107 and the 6th resistance R106, produce voltage division signal, export the FB port of power supply control chip 112 to; Another Lu Jing nine resistance R109, the tenth resistance R110 ground connection. Owing to the 8th resistance R108 arranges bigger resistance, such as 2M, to prevent the conducting of the 4th switching tube Q4.
Be in protection or dormant state when electrical equipment under, power supply control chip 112 stops work, not generation current in auxiliary winding. Due to the built-in constant current source of BP port of power supply control chip 112, be therefore in protection or dormant state when electrical equipment under, the BP port of this power supply control chip 112 is high level always.
If under electrical equipment is in protection or dormant state, door switch DOOR closes, and the base stage of the 3rd switching tube Q3 is lower level. Now form pressure reduction between the emtting electrode of the 3rd switching tube Q3 and base stage, and conducting. Due to the 3rd switching tube Q3 conducting, coating-forming voltage on the collector electrode of this switching tube Q3, forms pressure reduction between the emtting electrode of the 4th switching tube Q4 and base stage, and conducting. Owing to the first electric capacity C101 is charged under being in normal operation state by electrical equipment, therefore when the 2nd switching tube Q2 conducting, first electric capacity C101 discharges, a road the 3rd switching tube Q3, door switch DOOR, the 3rd resistance R103 ground connection, forms discharge loop; Another Lu Jing tri-switching tube Q3, the 4th switching tube Q4, the tenth resistance R110 ground connection form discharge loop.Meanwhile, the 2nd electric capacity C102 is charged. In order to make the BP port of power supply control chip 112 can receive a negative edge signal (i.e. wake-up signal), then the voltage of the first electric capacity C101 by high level rapid reduction to lower level. Due to door switch DOOR closed time, the first electric capacity C101 and the 2nd electric capacity C102 is in parallel, and therefore the 2nd electric capacity C102 can accelerate the electric discharge of the first electric capacity C101. In the present embodiment, the capacitance of the 2nd electric capacity C102 is bigger than the capacitance of the first electric capacity C101. Preferably, the capacitance of the 2nd electric capacity C102 is at least 10 times of the capacitance of the first electric capacity C101, and the such as capacitance of the first electric capacity C101 is 0.1 μ F, and the capacitance of the 2nd electric capacity C102 is 1 μ F. When BP port receives a negative edge signal, power supply control chip 112 will be waken up, and exit dormancy or protection state, rework, and electrical equipment can carry out normal operation. When power supply is from after dormancy or protection recovering state normal operation, no matter door switch DOOR disconnects or closes, and power supply control chip 112 is still in normal operation state.
In the present embodiment, the resistance of the 3rd resistance R103 can be arranged bigger than the resistance of the 4th resistance R104, so that after the 3rd switching tube Q3 and the 4th switching tube Q4 conducting, the 2nd electric capacity C102 ends after it can be made to maintain for some time again, and the BP port of power supply control chip 112 turns into high level again. Preferably, the resistance of the 3rd resistance R103 is at least 10 times of the resistance of the 4th resistance R104.
In addition, in order to when feeding back module 113 and export without feedback signal, ensure that the FB port of power supply control chip 112 is lower level, in the present embodiment, the resistance of the 7th resistance R107 is bigger than the resistance of the 6th resistance R106. Preferably, the resistance of the 7th resistance R107 is at least 10 times of the resistance of the 6th resistance R106, and such as the 6th resistance R106 value is 2K Ω, then the value of the 7th resistance R107 is 20K Ω. 2nd diode D102 plays half-wave rectification, and only allows positive voltage to pass through. 3rd electric capacity C103 is connected across between the BP port of power supply control chip 112 and FB port, plays filter effect.
Further, as shown in Fig. 6 and Fig. 8, the low-power dissipation standby device of the present embodiment also comprises: Super-zero control module 115. This Super-zero control module 115 one end is connected with wake module 114, and the other end is connected with the zero passage signal generator module 123 of control module 120. Super-zero control module 115 is opened according to the working order of power supply control chip 112, control zero passage signal generator module 123 or is closed.
Due to zero passage signal in the control of electrical equipment important; when entering protection pattern or low-power consumption pattern when power supply control chip 112; if zero passage signal generator module 123 is also in work; still bigger energy consumption can be produced; it is thus desirable to cut off equally by this zero passage signal generator module, such that it is able to low standby power loss falls further.
Specifically, this Super-zero control module 115 can comprise the first chemical capacitor E101, the 2nd optocoupler IC102, the 11 resistance R111. First chemical capacitor E101 is in parallel with the series circuit of the 9th resistance R109 and the tenth resistance R110, and namely the 2nd end of the auxiliary winding with transformer 111 of just holding of the first chemical capacitor E101 is connected, and the negative terminal of the first chemical capacitor E101 is connected to ground. The just end of the first chemical capacitor E101 after the 11 resistance R111, more successively through the first primary port (port 1) and the 2nd primary port (port 2) of the 2nd optocoupler IC102, then ground connection.First secondary ports (port 4) of the 2nd optocoupler IC102 is connected with zero line L, and second subprime port (port 6) is connected with zero passage signal generator module 123. It is understandable that, if wake module is the circuit structure shown in Fig. 4, connection structure before the connection similar of the first chemical capacitor E101 and the 2nd optocoupler IC102 and wake module circuit in this Super-zero control module 115, namely the 2nd end of the auxiliary winding with transformer 111 of just holding of the first chemical capacitor E101 is connected, and the negative terminal of the first chemical capacitor E101 is connected to ground. The just end of the first chemical capacitor E101 after the 11 resistance R111, more successively through the first primary port and the 2nd primary port of the 2nd optocoupler IC102, then ground connection.
Zero passage signal generator module 123 can comprise the 3rd optocoupler IC103, the 12 resistance R112, the 13 resistance R113, the 4th electric capacity C104. Optocoupler IC103 has four ports, and port 1 is connected with the secondary ports 4 of optocoupler IC102, port 2 ground connection, and port 3 ground connection, port 4 is connected with+5V power supply through the 12 resistance R112. Port 4 also exports zero passage signal ZERO through the 13 resistance R113. The output terminal of zero passage signal ZERO is also through the 4th electric capacity C104 ground connection.
Further, as shown in Figures 7 and 8, above-mentioned power supply module 110 also comprises elementary rectification filtering module 116 and secondary commutation filtering module 117. Elementary rectification filtering module 116 comprises full wave rectifying unit 1161 and elementary filter unit 1162. This elementary filter unit 1162 can be pi type filter, certainly can also replace by other wave filters, the bandpass filter being such as made up of inductance and electric capacity. Transformer 111 is from the transmission ofenergy of primary side to secondary side post, then through secondary commutation filtering module 117, exports d. c. voltage signal, to drive master control chip 121 to work. Namely master control chip 121 is started working under the excitation of volts DS; when electrical equipment is in standby pattern; and exceed the regular hour; master control chip 121 is by shutdown module 122; act on the feedback module 113 in power supply module 110; make power supply control chip 112 enter specific state, such as protection or dormant state, thus greatly fall low standby power loss.
Further, when power supply control chip 112 transformer 111 turns into cutting out from conducting, the primary side of transformer 111 can produce bigger sharp peak voltage, in order to reduce this point peak voltage, have employed RCD absorption circuit 118, it is ensured that safety.
Specifically, as shown in Figure 8, in above-mentioned transformer 111 primary side, full wave rectifying unit 1161 can comprise the full-wave rectification bridge that 4 diodes are formed, namely the 3rd diode D103, the 4th diode D104, the 5th diode D105, the 6th diode D106. Elementary filter unit 1162 comprises an inductance and two chemical capacitors, namely the first inductance L 101, the 2nd chemical capacitor E102, the 3rd chemical capacitor E103. RCD absorption circuit 118 comprises the 7th diode D107, the 14 resistance R114, the 15 resistance R115, the 16 resistance R116 and the 5th electric capacity C105. In order to realize preferably point peak voltage assimilation effect, in the present embodiment, the 14 resistance R114 value is 100 Ω, the 15 resistance R115 and the 16 resistance R116 respectively value be 100K Ω, the 5th electric capacity C105 value is 1nF, and withstand voltage is 1KV.
Owing to the household electrical appliances of routine have at least two direct supplys, i.e.+5V and+12V, wherein+5V is the offer electric power support of master control chip, and+12V is that load provides driving, such as rly. etc.For ensureing to export positive voltage, adopt half-wave rectification filtering, it is made up of diode and electric capacity. Wherein, half-wave rectification comprises the 8th diode D108, the 9th diode D109. Pi type filter comprises the 2nd inductance L 102, the 4th chemical capacitor E104, the 5th chemical capacitor E105, the 6th chemical capacitor E106. In addition, the 17 resistance R117 and the 6th electric capacity C106 connects and forms snubber, it is possible to absorb the sharp peak voltage that primary side produces, and can also reduce the 8th diode D108 and the reverse recovery time of the 9th diode D109 simultaneously.
Above-mentioned low-power dissipation standby device can be applicable to have in the electrical equipment of switch door, such as microwave oven, baking box. When being in standby state or off-mode when this electrical equipment, pass machine control signal is fed back to power supply control chip 112 by shutdown module 122 by master control chip 121, so that power supply control chip 112 stops work, enters protection or dormant state. When the switch door of this electrical equipment is opened, power supply control chip 112 will be waken up and rework. With microwave oven, the application of low-power dissipation standby device in electrical equipment is specifically described below.
As shown in Figure 9, Fig. 9 is the electrical equipment connection diagram of low-power consumption microwave oven, and in figure, BR represents brown wire harness, BL represents blue wire harness, BK represents black wire harness, WH represents white wire harness, RD represents red wire harness, YW represents yellow wire harness. The live wire L of city's electricity is through safety fuse and temperature controller, and a road requires no the first interlocking and directly receives fan motor, and the forceful electric power end to microwave rly.; Other loads are then through the first interlocking and main interlocking, and the forceful electric power end of barbecue rly. is received on a road, and barbecue temperature controller and barbecue tube, receive zero line; The primary side of transformer is then received on another road, rotary tray motor, microwave rly., then receives zero line. Wherein, the terminal of transformer primary, namely the terminal and the 2nd of rotary tray motor is interlocked, and namely monitoring interlocking is in parallel. 3rd interlocking is connected with automatically controlled plate, i.e. door monitoring interlocking switch.
In the electrical structure of this low-power consumption microwave oven, by the state of the switch door of microwave oven, the state correspondence change of the 2nd interlocking and the 3rd interlocking. It is specially: when the switch door of microwave oven is in pass door state, the 2nd interlocking disconnects; When the switch door of microwave oven is in door opening state, the 2nd interlocking is closed. Therefore, by the 2nd interlocking so that when the switch door of microwave oven is in door opening state, if when namely the first interlocking inefficacy is adhered, city's electricity short circuit can be caused air switch action by the 2nd interlocking, prevents microwave leakage. Namely 3rd interlocking is equivalent to the enabling DOOR in above-mentioned low-power dissipation standby device, and when the switch door of microwave oven is in pass door state, the 3rd interlocking disconnects; When the switch door of microwave oven is in door opening state, the 3rd interlocking is closed.
Above-mentioned low-power dissipation standby device is arranged in automatically controlled plate, or this low-power dissipation standby device is automatically controlled plate. Automatically controlled plate by port CN1 obtain city electricity electric power signal, can Direct driver stove lamp-direct-current LED lamp, drive barbecue and microwave rly., start corresponding load. When microwave oven is in standby, after timing for some time, the main control MCU of the control module of automatically controlled plate, by starting shutdown module, makes the power supply control chip of microwave oven be in protection or dormant state, to reduce the standby power consumption of microwave oven.
When user opens the switch door of microwave oven, by by the 3rd interlocking switch on automatically controlled plate so that the power supply control chip of automatically controlled plate restarts work.
As shown in Figure 10, above-mentioned low-power consumption microwave oven operationally, can comprise following process step:
S1, microwave oven switch door are opened, and the 3rd interlocking is closed;
Detect that switch door is opened, then the 3rd interlocking is in closed state.
S2, wake module produce wake-up signal, make power supply control chip normal operation;
When the 3rd interlocking; namely in low-power dissipation standby device, the switch door DOOR of wake module closes, then wake module produces the wake-up signal of negative edge, transfers to the BP port of power supply control chip; so that power supply control chip exits dormancy or protection state, start normal operation. The i.e. conducting of transformer and disconnection, so that the transmission ofenergy of transformer primary is to primary side, to load and master control chip power supply.
S3, automatically controlled plate master control chip obtain electric, normal operation;
Master control chip obtains the output voltage signal of transformer secondary, starts normal operation.
S4, operation according to user, start culinary art;
User can carry out cooking operation by microwave oven, such as, boil, steam, bake etc.
S5, judge culinary art whether terminate; It is proceed to step S6, otherwise returns step S4;
Master control chip also will judge whether culinary art terminates, and such as whether other each assemblies stop work, whether receives shutdown or standby command etc.
S6, enter standby state, and carry out timing;
At the end of judging culinary art, then entering standby state, it will be carried out timing by master control chip simultaneously.
Whether S7, standby time more than N minute, are, proceed to step S8, otherwise return step S6;
S8, master control chip start shutdown module, make power supply control chip enter protection or dormant state, to realize low-power consumption.
When standby time was more than N minute, then master control chip produces the pass machine control signal of high level, to pass through the FB port of shutdown module feedback to power supply control chip, so that Energy control signal enters protection or dormant state.
These are only preferred embodiment of the present utility model; not thereby patent scope of the present utility model is limited; every utilize the utility model specification sheets and accompanying drawing content to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all it is included in scope of patent protection of the present utility model with reason.
Claims (10)
1. a low-power dissipation standby device, is applied in the electrical equipment with switch door, it is characterised in that, described low-power dissipation standby device comprises power supply module and control module; Wherein,
Described power supply module comprises transformer, power supply control chip, feedback module, wake module; Described feedback module is positioned at the primary side of described transformer, and is connected with the output terminal of primary side, for gathering the voltage output signal of primary side, and the voltage output signal gathered feeds back to the feedback port of described power supply control chip; The primary side winding switching of power supply control chip and described transformer, for controlling conducting and the disconnection of described transformer, and adjusts the conducting dutycycle of described transformer according to feedback signal; Described wake module is positioned at the primary side of described transformer, and is connected with the port that wakes up of described power supply control chip, for when the switch door of electrical equipment is opened, producing wake-up signal;
Described control module comprises the shutdown module that master control chip is connected with described master control chip; Master control chip produces to close machine control signal, and described shutdown module and described feedback module, be passed to feedback module by pass machine control signal, with by feeding back module feedback to power supply control chip, so that power supply control chip enters dormancy or protection state.
2. low-power dissipation standby device as claimed in claim 1, it is characterised in that, described shutdown module comprises the first switching tube, and the base stage of described first switching tube is connected with an output port of described master control chip;
Described feedback module comprises the first optocoupler, the first resistance, the 2nd resistance, voltage stabilizing tube; The corresponding feedback port with described power supply control chip of first output port of described first optocoupler and the 2nd output port with wake port up and be connected; The collector electrode of the first switching tube is connected with the first input port of the first optocoupler through the first resistance, and collector electrode is also connected with the 2nd input port of the first optocoupler; The grounded emitter of the first switching tube; The positive pole of voltage stabilizing tube is connected with the emtting electrode of the first switching tube, and negative pole is connected with the collector electrode of the first switching tube; First input port of the first optocoupler is also connected through a voltage output end of the 2nd resistance with the primary side of described transformer.
3. low-power dissipation standby device as claimed in claim 1, it is characterised in that, described shutdown module comprises the first switching tube, and the base stage of described first switching tube is connected with an output port of master control chip;
Described feedback module comprises the first optocoupler, the first resistance, the 2nd resistance, voltage stabilizing tube; The corresponding feedback port with described power supply control chip of first output port of the first optocoupler and the 2nd output port with wake port up and be connected; The collector electrode of described first switching tube is connected with the first input port of the first optocoupler through the first resistance, and collector electrode is also connected with the 2nd input port of the first optocoupler; The emtting electrode of described first switching tube is through the 2nd resistance ground connection; The positive pole of voltage stabilizing tube is connected with the emtting electrode of the first switching tube, and negative pole is connected with the collector electrode of the first switching tube; First input port of the first optocoupler and the connection node of the first resistance also voltage output end with the primary side of described transformer be connected.
4. low-power dissipation standby device as claimed in claim 1, it is characterised in that, described wake module comprises the first electric capacity, the 2nd electric capacity, the 2nd switching tube, door switch, the 3rd resistance, the 4th resistance, the 5th resistance, the first diode; One end the 5th resistance of the auxiliary winding of described transformer, the first diode are connected with the port that wakes up of described power supply control chip; One end of first electric capacity is connected with the port that wakes up of described power supply control chip, the other end ground connection; The emtting electrode of the 2nd switching tube is connected with the port that wakes up of described power supply control chip, the other end ground connection; After the base stage of the 2nd switching tube connects described door switch, through the shunt circuit ground connection of the 2nd electric capacity and the 3rd resistance; The base stage of the 2nd switching tube is also connected with the port that wakes up of described power supply control chip through the 4th resistance.
5. low-power dissipation standby device as claimed in claim 1, it is characterized in that, described wake module comprises: the first electric capacity, the 2nd electric capacity, the 3rd switching tube, the 4th switching tube, door switch, the 3rd resistance, the 4th resistance, the 5th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the first diode; One end of first electric capacity is connected with the port that wakes up of described power supply control chip, the other end ground connection; The emtting electrode of the 3rd switching tube is connected with the port that wakes up of described power supply control chip, and collector electrode is connected with the emtting electrode of described 4th switching tube, the grounded collector of described 4th switching tube; 8th resistance one end is connected with the emtting electrode of described 3rd switching tube, and the other end is connected with the collector electrode of described 3rd switching tube;
The first end of the auxiliary winding of described transformer is connected with the port that wakes up of described power supply control chip through the 5th resistance, the first diode; Base stage one tunnel the 4th resistance of the 3rd switching tube is connected with the port that wakes up of described power supply control chip, after another road connects described door switch, through the shunt circuit ground connection of the 2nd electric capacity and the 3rd resistance;The first end of the auxiliary winding of described transformer also ground connection after the 9th resistance and the tenth resistance successively, and the connection node of the 9th resistance and the tenth resistance is connected with the base stage of described 4th switching tube.
6. low-power dissipation standby device as described in claim 4 or 5, it is characterised in that, described wake module also comprises the 6th resistance, the 7th resistance; The first end of the auxiliary winding of described transformer is also successively through the 7th resistance, the 6th resistance ground connection, and the connection node of the 7th resistance and the 6th resistance is connected with the feedback port of described power supply control chip.
7. low-power dissipation standby device as described in claim 4 or 5, it is characterized in that, described wake module also comprises the 3rd electric capacity, and described one end of 3rd electric capacity is connected with the feedback port of described power supply control chip, and the other end is connected with the port that wakes up of described power supply control chip.
8. low-power dissipation standby device as described in item as arbitrary in claim 1-5, it is characterised in that, described low-power dissipation standby device also comprises:
Super-zero control module, one end is connected with wake module, and the other end is connected with the zero passage signal generator module of control module, and for the working order according to power supply control chip, control zero passage signal generator module is opened or closed.
9. low-power dissipation standby device as claimed in claim 8, it is characterised in that, described Super-zero control module comprises the first chemical capacitor, the 2nd optocoupler, the 11 resistance; First chemical capacitor is just holding the first end of the auxiliary winding with transformer to be connected, the first chemical capacitor negativing ending grounding; The just end of the first chemical capacitor also after the 11 resistance, more successively through the first primary port and the 2nd primary port of the 2nd optocoupler, then ground connection; First secondary ports of the 2nd optocoupler is connected with zero line L, and second subprime port is connected with described zero passage signal generator module.
10. an electrical equipment, comprises switch door; It is characterized in that, described electrical equipment also comprises automatically controlled plate and door monitoring interlocking, described automatically controlled plate is provided with the low-power dissipation standby device as described in item as arbitrary in claim 1-9, and the door switch of described low-power dissipation standby device is described door monitoring interlocking, and when switch door is in pass door state, door monitoring interlocking disconnects; When the switch door of electrical equipment is in door opening state, door monitoring interlocking is closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521083468.8U CN205319929U (en) | 2015-12-21 | 2015-12-21 | Low -power consumption standby device and electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521083468.8U CN205319929U (en) | 2015-12-21 | 2015-12-21 | Low -power consumption standby device and electrical equipment |
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| CN205319929U true CN205319929U (en) | 2016-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449991A (en) * | 2015-12-21 | 2016-03-30 | 广东美的厨房电器制造有限公司 | Low-power consumption standby device and electrical device |
| WO2023029040A1 (en) * | 2021-09-06 | 2023-03-09 | 深圳市优优绿能电气有限公司 | Auxiliary power source circuit having ultra-low standby power consumption |
-
2015
- 2015-12-21 CN CN201521083468.8U patent/CN205319929U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449991A (en) * | 2015-12-21 | 2016-03-30 | 广东美的厨房电器制造有限公司 | Low-power consumption standby device and electrical device |
| CN105449991B (en) * | 2015-12-21 | 2018-06-08 | 广东美的厨房电器制造有限公司 | Low-power dissipation standby device and electrical equipment |
| WO2023029040A1 (en) * | 2021-09-06 | 2023-03-09 | 深圳市优优绿能电气有限公司 | Auxiliary power source circuit having ultra-low standby power consumption |
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