CN105696250A - An energy-saving control method for a washing machine and a washing machine - Google Patents
An energy-saving control method for a washing machine and a washing machine Download PDFInfo
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- CN105696250A CN105696250A CN201410700066.1A CN201410700066A CN105696250A CN 105696250 A CN105696250 A CN 105696250A CN 201410700066 A CN201410700066 A CN 201410700066A CN 105696250 A CN105696250 A CN 105696250A
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention provides an energy-saving control method for a washing machine and a washing machine. When the washing machine is controlled to end the operation(s) of rinsing & spinning and/or spinning drying, induction current generated by a motor in the washing machine because of inertia operation is collected and stored; when the stored electricity meets the requirement for power supply of a low voltage load in the washing machine, the electricity is supplied to the low voltage load. When the washing machine finishes the operations of rinsing & spinning and spinning drying, the energy of reverse electro-dynamic potential generated by the motor because of inertia operation is collected and stored and when the stored electricity meets the requirement for power supply of a control circuit in the washing machine, an energy storage element supplies the electricity to the control circuit, replacing a main power source circuit. Thus, the problem of energy waste caused when a washing machine finishes rinsing & spinning and spinning drying is effectively solved, the consumption of external energy is effectively reduced, energy is maximally utilized and the energy efficiency of the washing machine is remarkably increased.
Description
Technical field
The invention belongs to washing machine technology field, specifically, relate to a kind of energy-conserving control technology recycled for the energy that washing machine is produced in running and the washing machine designed based on described energy-conserving control technology。
Background technology
Under the severe situation that actual provision constantly declines in global energy requirements sustainable growth, the Energy Efficiency Standard of household electric appliances is constantly promoted by country, and power conservation requirement is greatly improved。Existing DC frequency-changing washing machine, its internal motor used is DC Brushless Motor, and the body stator of this DC Brushless Motor is the three-phase windings of star-like connection。Control to realize driving to DC Brushless Motor, DC frequency-changing washing machine is usually provided with power-supply system and control system。Wherein, the direct current supply that power-supply system is processed in control system needed for each electric loading for the electric main rectification accessed outside, filtering, voltage stabilizing, meet the need for electricity of each load。Control system is then mainly made up of power circuit and control circuit, is responsible for running washing procedure, and drives DC Brushless Motor to run in order according to the process of program, completes whole washing process。Wherein, control circuit is made up of other auxiliary circuits such as single-chip microcomputer and the drive circuits with high-speed computation ability。The three-phase inverter that power circuit is made up of six high-power IGBT modules, under the effect of the control signal that described three-phase inverter exports in control circuit, the DC bus-bar voltage that power circuit exports is reverse into three-phase alternating current, drives DC Brushless Motor to run, export power。
Traditional washing machine all can carry out processed when rinsing clothes terminates and washing is finally completed, and once complete washing process at least needs to perform triple dewatering and processes。DC Brushless Motor, when running up, can produce inverse electromotive force in coil, dehydration completes to close after the control of motor, and due to drag effect, the rotating speed of motor can be more and more less, and inverse electromotive force also can be more and more less。Final kinetic energy converts electric energy to, and electric energy changes into thermal energy consumption and falls。As can be seen here, the DC Brushless Motor in existing washing machine uses as just motor, it does not have makes full use of the energy of the inverse electromotive force of its generation, causes the unnecessary waste of the energy。
Summary of the invention
The present invention is in order to reduce the power consumption of washing machine, it is proposed that the energy-saving control method of a kind of washing machine, is reclaimed by the inverse electromotive force energy that motor in washing machine is produced, store and is utilized, to reach to save the purpose of design of the energy。
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of energy-saving control method of washing machine, when controlling washing machine and terminating rinsing dehydration and/or drying dehydration operation, to the motor in washing machine because faradic current produced by coasting reclaims and stores, and when the electricity stored meets the power reguirements needed for washing machine mesolow load, power for described low-voltage load。
Faradic current in order to motor is produced carries out effectively reclaiming and storage, and keep the aesthetics of washing machine monnolithic case, preferably in energy-storage travelling wave tube built-in in described washing machine, to motor after when described coasting, produced faradic current carries out rectification, for described energy-storage travelling wave tube charging accumulation of energy；Detect in real time the total voltage of described energy-storage travelling wave tube, and when described total voltage is lower than described power reguirements, cuts off the discharge loop of energy-storage travelling wave tube, go back to main power source and power。
Preferably, described energy-storage travelling wave tube is set of cells, when set of cells is charged, first detects the size of the inverse electromotive force produced by motor, and then the size according to described inverse electromotive force selects the set of cells of relevant voltage rank to be charged accumulation of energy, to improve charge efficiency。
In order to ensure the safety that energy-storage travelling wave tube and control circuit are run, detect temperature and the charging and discharging currents of described energy-storage travelling wave tube in real time, and when the temperature of described energy-storage travelling wave tube is too high or charging and discharging currents is excessive, cut off the charging and discharging circuit of energy-storage travelling wave tube, to avoid energy-storage travelling wave tube is caused damage。
Based on above-mentioned energy-saving control method, the invention allows for a kind of washing machine, be provided with main power circuit, control circuit, motor and drive the power circuit of described motor operation；Described motor produces faradic current because of coasting when terminating rinsing dehydration and/or drying dehydration operation at washing machine, and after described faradic current becomes DC current via a rectifier circuit rectifies, transmission a to energy-storage travelling wave tube is charged accumulation of energy；Described energy-storage travelling wave tube is when the electricity of its storage reaches the power reguirements of control circuit, and the control circuit that output electric energy is described is powered。
In order to the discharge and recharge sequential of described energy-storage travelling wave tube is carried out orderly control, described control circuit is provided with controller and voltage detecting circuit, described voltage detecting circuit detects the electricity that described energy-storage travelling wave tube stores, and feeding back to described controller, controller connects the current supply circuit of main power circuit and control circuit connects and carries out gating switching between the current supply circuit of energy-storage travelling wave tube according to the electricity detected in control circuit。
Preferably, described energy-storage travelling wave tube is set of cells, in order to improve charge efficiency, total voltage and the single battery voltage of set of cells are detected by described voltage detecting circuit, and inverse electromotive force when terminating rinsing dehydration and/or drying dehydration operation at washing machine, motor produced detects；Described controller is charged according to the set of cells of the inverse electromotive force gating relevant voltage rank detected。
Further, described control circuit is additionally provided with current detection circuit and temperature sensing circuit, detects the charging and discharging currents of set of cells and the temperature of set of cells respectively, and feed back to described controller；Described controller, when temperature set of cells being detected is too high or charging and discharging currents is excessive, cuts off the charging and discharging circuit of set of cells, to guarantee that set of cells can safe operation。
In order to reduce the transformation to electronic devices and components circuit existing in control circuit as far as possible, the present invention is preferably in setting up a power management chip in described control circuit, the detection signal that described voltage detecting circuit, current detection circuit and temperature sensing circuit generate is first transmitted to after power management chip is processed into digital signal, again through bus transfer to described controller。
Further, described motor is DC Brushless Motor；Described power circuit is provided with the three-phase inverting circuit being formed by connecting by six power tubes, on each power tube, reverse parallel connection has a fly-wheel diode respectively, six fly-wheel diodes constitute described rectification circuit, and the faradic current of motor output is carried out rectification output。
Compared with prior art, advantages of the present invention and have the benefit effect that the present invention by washing machine complete rinsing dehydration and during drying dehydration operation the energy of the inverse electromotive force that motor produces because of coasting reclaim, storage, and when the electricity stored reaches in washing machine the power reguirements needed for control circuit, replacing main power circuit in turn is that control circuit is powered, thus the energy waste problem that the washing machine of efficiently solving over causes after rinsing dehydration and drying dehydration terminate, effectively reduce the consumption to extra power, achieve the maximum utilization of the energy, then the energy valid value of washing machine is significantly improved。
After reading in conjunction with the accompanying the detailed description of embodiment of the present invention, the other features and advantages of the invention will become clearer from。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
Fig. 1 is the circuit overall architecture block diagram of a kind of embodiment of washing machine proposed by the invention；
Fig. 2 is the partial circuit theory diagram of a kind of embodiment of control circuit and power circuit in Fig. 1；
Fig. 3 is the schematic block circuit diagram of a kind of embodiment that the energy-storage travelling wave tube in Fig. 1 carries out charge and discharge control；
Fig. 4 is the physical circuit schematic diagram of Fig. 3。
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail。
The present embodiment DC frequency-changing washing machine to be configured with DC Brushless Motor, is specifically described the washing machine energy-saving control method of the present invention。
The present embodiment is in order to be effectively improved the energy valid value of DC frequency-changing washing machine, after washing machine completes rinsing dehydration and/or drying dehydration function and closes the control to its built-in motor, the energy of produced inverse electromotive force of keeping due to effect of inertia during this period motor running up stores, namely, motor is reverse into during this period electromotor and outwards exports energy, by effectively reclaiming this portion of energy, and when the energy stored disclosure satisfy that the power reguirements needed for washing machine mesolow load, replacing original main power circuit in washing machine in turn is that the low-voltage load in washing machine is powered, thus can reduce the washing machine consumption to extra power, reach energy-conservation purpose of design。
In the present embodiment, described low-voltage load can refer specifically to each electric loading being laid in the control circuit on the built-in system plate of washing machine, and its supply voltage usually requires that at below 15V。And for washing machine is used for driving the power circuit of motor running, owing to the amplitude of its required DC bus-bar voltage is higher, often at more than 300V, therefore still need to the power supply mode continuing to use existing main power circuit for its power supply。
The present embodiment carries out effectively reclaiming and utilizing for produced faradic current that motor is operated under effect of inertia, sets up energy-storage travelling wave tube at washing machine internal, shown in Figure 1。Described energy-storage travelling wave tube can be accumulator, it is also possible to be the set of cells formed by the series connection of multiple lithium batteries or bulky capacitor etc.。Owing to the stator in DC Brushless Motor is the three-phase windings adopting star-like connected mode, the electric current generated by three-phase windings sensing when motor inertia operates is alternating current, it is thus desirable to after the faradic current that motor exports is rectified into direct current, the charging requirement of energy-storage travelling wave tube could be met。For this, the present embodiment arranges rectification circuit on the internal circuit board of washing machine, connects described DC Brushless Motor, receive the alternating current by DC Brushless Motor sensing output, and after being rectified into DC current, output is to energy-storage travelling wave tube, for energy-storage travelling wave tube charging accumulation of energy。
In order to simplify circuit design, the power circuit being used for driving motor running in washing machine is preferably also used as rectification circuit by the present embodiment, it is achieved to faradic rectifying conversion。Specifically, in existing washing machine circuit, the three-phase inverter that its power circuit is usually formed by connecting by six powerful IGBT pipe V1-V6 or MOSFET pipe, shown in Fig. 2, for the DC bus-bar voltage exported by main power circuit is carried out inversion, to generate the three-phase alternating-current powered of required frequency, DC Brushless Motor rotating speed as requested is driven to run, output kinetic energy。The present embodiment is difference one sustained diode 1-D6 of reverse parallel connection on each power tube V1-V6, illustrate for the IGBT pipe V1-V6 shown in Fig. 2, a sustained diode 1-D6 can be bridged between the collector and emitter of each IGBT pipe V1-V6, and the negative electrode of sustained diode 1-D6 connects the colelctor electrode of IGBT pipe V1-V6, the anode of sustained diode 1-D6 connects the emitter stage of IGBT pipe V1-V6。Thus one, six sustained diode 1-D6 connect formation three-phase bridge rectification circuit, connect the three-phase windings of DC Brushless Motor, when motor exports faradic current as electromotor, after faradic current is carried out rectifying conversion, output DC current is to energy-storage travelling wave tube, for described energy-storage travelling wave tube charging accumulation of energy。
Electric energy in order to energy-storage travelling wave tube is stored carries out Appropriate application, the present embodiment is further provided with electric power management circuit on the internal circuit board of washing machine, shown in Fig. 1, Fig. 3, connect described energy-storage travelling wave tube, the electric energy stored in detection energy-storage travelling wave tube in real time, and when the electric energy stored is sufficient for the need for electricity of control circuit, cut off the main power circuit power supply to control circuit, turning by energy-storage travelling wave tube is each electricity consumption load supplying in control circuit, to reduce the consumption to extra power, reach energy-conservation purpose of design。
In the present embodiment, main power circuit can be made up of major parts such as bridge rectifier, filter circuit and direct current transducers, shown in Figure 1。Wherein, bridge rectifier is for receiving the electric main of outside, and after electric main is rectified into DC source, export and be filtered processing to filter circuit, and then generate stable high-voltage DC power supply, the DC source of such as+310V, exports the three-phase inverter to power circuit, provides its required DC bus-bar voltage for three-phase inverter。Direct current transducer is for carrying out decompression transformation to the DC bus-bar voltage of filter circuit output, to generate low-voltage dc power supply VDD, the low-voltage dc power supply of such as+15V, export to dc-dc, by the direct current supply VCC needed for difference electric loading in dc-dc generation control circuit, for instance the direct current supply of+5V or+3.3V。
In order to ensure the energy-storage travelling wave tube effective power supply to control circuit, design electric power management circuit is after detecting that the electricity that energy-storage travelling wave tube stores reaches VDD, for instance during+15V, being switched to energy-storage travelling wave tube is that control circuit is powered。Specifically, it is possible to the electric energy transmission exported by energy-storage travelling wave tube to the input of dc-dc, utilizes dc-dc that the electric energy that energy-storage travelling wave tube exports converts in control circuit the DC source VCC needed for each electric loading, powers for control circuit。
The electric power management circuit of the present embodiment is provided with voltage detecting circuit, current detection circuit and temperature sensing circuit, shown in Fig. 3, it is respectively used to the voltage to energy-storage travelling wave tube, charging and discharging currents and operating temperature detect, and according to testing result generation corresponding detection signal output to power management chip, after each road received detection signal processing being become digital signal via power management chip, by the controller in communicating circuit (such as bus) transmission to control circuit, such as there is the single-chip microcomputer of high-speed data disposal ability, corresponding control signal is generated by controller, connect with the current supply circuit and control circuit connecting main power circuit in control circuit and carry out gating switching exactly between the current supply circuit of energy-storage travelling wave tube。Meanwhile, controller is according to the size of the charging and discharging currents received and variations in temperature, can judge that whether the current duty of energy-storage travelling wave tube is normal exactly, when occurring abnormal, charge circuit and the discharge loop of energy-storage travelling wave tube is cut off in time, to guarantee energy-storage travelling wave tube and the safety of whole system circuit work by controller。
The present embodiment illustrates for set of cells as described energy-storage travelling wave tube。The total voltage of set of cells and single battery voltage are detected by the voltage detecting circuit of the present embodiment respectively, and when terminating rinsing dehydration and/or drying dehydration operation at washing machine, switch element K8 Guan Bi is controlled by controller, the inverse electromotive force that motor is produced by voltage detecting circuit is utilized to detect, and then one or more conducting in switch element K2-K6 is selected according to the inverse electromotive force detected, it is charged with the set of cells of gating relevant voltage rank, to improve charge efficiency。Controller is according to the assembled battery total voltage detected determines which kind of power supply mode of selection, when total voltage set of cells being detected exceedes setting threshold value, time such as more than VDD, control switch element K7 Guan Bi, cut off the main power circuit power supply to control circuit simultaneously, then turning by set of cells is that control circuit is powered, to save extra power。
A kind of preferred circuit building mode as described voltage detecting circuit, the present embodiment is provided with multichannel resistance pressure-dividing network in described voltage detecting circuit, for the battery being provided with N number of series connection in set of cells BAT, then should arranging N+1 road resistance pressure-dividing network in voltage detecting circuit, described N is the positive integer more than 1。As shown in Figure 4, illustrate for N=5, in order to realize the detection to single battery voltage and the detection to inverse electromotive force produced by motor, the present embodiment is connected a road resistance pressure-dividing network correspondingly between the positive pole and ground of each battery, such as by resistance R32-R36, five road resistance pressure-dividing networks of R39-R43 composition, the sampled voltage VS1-VS5 of five reflection cell voltages is exported by the divider node of five road resistance pressure-dividing networks, it is transmitted separately to five ADC pin AD2-AD6 of power management chip U1, digital signal is converted to by the analog-digital converter within power management chip U1, and thus can calculate the voltage of each monocell and the total voltage of whole set of cells。The magnitude of voltage calculated is sent to controller MCU by communicating circuit by power management chip U1, controls for follow-up charging。Resistance R48, R49 are connected and forms the 6th road resistance pressure-dividing network, one end ground connection by described 6th road resistance pressure-dividing network, the other end is connected to the DC side of power circuit IPM by switch element K8, its divider node connects the another one ADC pin AD1 of power management chip U1, carries out sample detecting for the inverse electromotive force VF that motor is produced。
By in set of cells BAT, the positive pole of each battery is connected to the DC side of described power circuit IPM each via a branch road routeing current-limiting resistance R22-R36 and switch element K2-K6 series connection formation, the described controller MCU size according to the inverse electromotive force VF detected, control one or more conducting in described switch element K2-K6, and then the set of cells of selection and inverse electromotive force VF relevant voltage rank is charged, to improve charge efficiency。
In the temperature sensing circuit of the present embodiment, being provided with the bleeder circuit being formed by connecting by critesistor RZ and divider resistance R37, as shown in Figure 4, be connected between DC source VCC and ground, its divider node connects the ADC pin AD0 of described power management chip U1。Described critesistor RZ is built in set of cells BAT, the variations in temperature of induced cell group BAT, and the resistance of himself is changed with the variations in temperature of set of cells BAT, and then change the magnitude of voltage at described divider node place。Described power management chip U1 converses the temperature value of set of cells BAT according to the magnitude of voltage received, and transmits to controller MCU。According to the temperature value received, controller MCU judges that whether the operating temperature of set of cells BAT is normal, if beyond the safe temperature range set, then output control signal controls switch element K7 disconnection, cut off the discharge loop of set of cells BAT, namely the connection of set of cells BAT and dc-dc U3 is disconnected, and control the switch element K9 Guan Bi being connected between direct current transducer U2 and dc-dc U3 simultaneously, turning by main power circuit is that control circuit is powered。When controller MCU detects set of cells BAT temperature anomaly, in order to ensure set of cells BAT charging safety, each way switch element K2-K6 that output control signal controls to be connected between power circuit IPM and set of cells BAT simultaneously disconnects, to cut off the charge circuit of set of cells BAT。
In order to the charging and discharging currents of set of cells BAT is detected, the present embodiment is connected sampling resistor RS2 in set of cells BAT, is specifically attached between the negative pole of set of cells BAT and ground。One end that sampling resistor RS2 connects set of cells BAT connects reference power source VREF by the first divider resistance R31 connected and the second divider resistance R38, the intermediate node of the first divider resistance R31 and the second divider resistance R38 is connected to the in-phase input end of an operational amplifier U4+, the other end of the described sampling resistor RS2 of the inverting input of described operational amplifier U4-be connected to by current-limiting resistance R30, and the outfan of described operational amplifier U4 is connected by feedback resistance R44。Sampled by the electric current of operational amplifier U4 convection current over-sampling resistance RS2, and by resistance R45 output to power management chip U1, the ADC pin AD7 of such as power management chip U1, and then convert digital signal to and send to controller MCU, it is achieved the real-time monitoring to set of cells BAT charging and discharging currents。
In order to realize overcurrent protection, the present embodiment is additionally provided with a comparator U5 in described current detection circuit, as shown in Figure 4。The described sampling resistor RS2 of the inverting input of described comparator U5-be connected to is connected one end of set of cells BAT, by the in-phase input end of comparator U5+connection reference voltage, described reference voltage can utilize divider resistance R28, R29 that DC source VCC dividing potential drop is formed。According to the current threshold set, regulate the resistance of divider resistance R28, R29 so that it is the reference voltage that dividing potential drop is formed is just corresponding with described current threshold。When the charging and discharging currents of set of cells BAT is normal, the pressure drop at sampling resistor RS2 two ends, less than described reference voltage, therefore exports high level signal by comparator U5, transmits the I/O mouth to power management chip U1。When the charging and discharging currents of set of cells BAT raises, when exceeding current threshold, the pressure drop at sampling resistor RS2 two ends is more than described reference voltage, therefore by the overcurrent protection signal Io of comparator U5 output low level, and the I/O mouth of transmission extremely described power management chip U1。Described power management chip U1 is when detecting that its I/O mouth is set to low level, and output alarm signal, to controller MCU, cuts off the charging and discharging circuit of set of cells BAT by controller MCU, namely controls switch element K2-K7 and disconnects, set of cells BAT is carried out overcurrent protection。
Below in conjunction with Fig. 4, the specific works process of the washing machine of the present embodiment is described in detail。
When washing machine is in washing, rinsing or drying dehydration state, DC Brushless Motor is run as motor function。Now, first controller MCU controls the switch element K1 Guan Bi being connected between power circuit IPM and main power circuit, electric main rectifying and wave-filtering is transformed into DC bus-bar voltage through bridge rectifier BD1 and filter circuit E1, C1 by the electric main of 220V, by the DC side of switch element K1 transmission to power circuit IPM。During this period, switch element K2-K6 and K8 all disconnects, and switch element K7 and K9 selects one Guan Bi according to the dump energy situation of set of cells BAT, powers for dc-dc U3, to generate the direct current supply needed for control circuit。
Controller MCU is according to the current running status of washing machine, output PWM modulation signal controls the three-phase inverter in power circuit IPM and runs (the break-make sequential namely controlling six high-power IGBT pipe V1-V6), DC bus-bar voltage is reverse into three-phase alternating current, for motor。When certain biphase energising of the stator winding of motor interior, magnetic field interaction produced by the magnetic pole of this electric current and rotor permanent-magnet steel and produce torque, driving rotor rotates, then is become the signal of telecommunication to feed back to controller MCU rotor magnetic steel evolution by position sensor U6。Controller MCU determines rotor-position according to the described signal of telecommunication checked, the break-make sequential of IGBT pipe V1-V6 is controlled further according to rotor-position, so that the every winding of stator is by a graded conducting, stator phase currents commutation according to a certain order with the change of rotor-position。Owing to the conducting order of IGBT pipe V1-V6 is Tong Bu with angle of rotor, thus serve the commutation effect of mechanical commutator, drive DC Brushless Motor to run, output kinetic energy。
When washing machine is after rinsing dehydration or drying dehydration complete, when DC Brushless Motor is in coasting state, for the inverse electromotive force effectively utilizing DC Brushless Motor to produce, first switch element K1 is opened by controller MCU, it is switched to charge circuit, Guan Bi switch element K8 detects the size of the inverse electromotive force that motor produces, and then according to the inverse electromotive force VF detected, select the one or more Guan Bis in switch element K2-K6, and then by different current-limiting resistance R22-R26, the set of cells of relevant voltage rank is charged。Meanwhile, by power management chip U1, total voltage and cell voltage to set of cells BAT detects in real time, and the charging current and operating temperature to set of cells BAT detects in real time, it is to avoid excessive charging current and too high temperature rise occur。
After charging complete, disconnect switch element K2-K6, cut off the charge circuit of set of cells BAT, the total voltage according to the set of cells BAT detected, it is determined that adopt which kind of power supply mode。If the electricity of set of cells BAT reaches power reguirements, for instance reach VDD, then Guan Bi switch element K7, converts the voltage of set of cells BAT to DC source VCC needed for control circuit by dc-dc U3, for each load supplying in control circuit。In adopting the set of cells BAT process powered, the detection voltage of set of cells BAT, electric current and temperature in real time, make once occurring that the undertension of set of cells BAT, electric current are excessive or temperature is too high, controller MCU will control switch element K7 in time and disconnect, cut off the discharge loop of set of cells BAT, and it is closed at switch element K9, turning by main power circuit is that control circuit continues power supply。
In the present embodiment, described switch element K1-K9 can adopt relay or other controllable switch element to carry out circuit design, and this is not specifically limited by the present embodiment。
The energy-conserving control technology of the present embodiment is applied in the design of current existing DC frequency-changing washing machine, the electric energy rotational that DC Brushless Motor can not only carry out forward controls, DC Brushless Motor can also be made to be reverse into electromotor charge accumulation of energy to energy-storage travelling wave tube, by effectively utilizing DC Brushless Motor because of inverse electromotive force produced by coasting, thus having saved energy, improve the energy valid value of DC frequency-changing washing machine。
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that, the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature carries out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme。
Claims (10)
1. the energy-saving control method of a washing machine, it is characterized in that: when controlling washing machine and terminating rinsing dehydration and/or drying dehydration operation, to the motor in washing machine because faradic current produced by coasting reclaims and stores, and when the electricity stored meets the power reguirements needed for washing machine mesolow load, power for described low-voltage load。
2. the energy-saving control method of washing machine according to claim 1, it is characterised in that: built-in energy-storage travelling wave tube in described washing machine, to motor after when described coasting, produced faradic current carries out rectification, for described energy-storage travelling wave tube charging accumulation of energy；Detect the total voltage of described energy-storage travelling wave tube, and when described total voltage is lower than described power reguirements, cuts off the discharge loop of energy-storage travelling wave tube, go back to main power source and power。
3. the energy-saving control method of washing machine according to claim 2, it is characterized in that: described energy-storage travelling wave tube is set of cells, when set of cells is charged, first detect the size of the inverse electromotive force produced by motor, and then the size according to described inverse electromotive force selects the set of cells of relevant voltage rank to be charged accumulation of energy。
4. the energy-saving control method of the washing machine according to Claims 2 or 3, it is characterized in that: detect temperature and the charging and discharging currents of described energy-storage travelling wave tube, and when the temperature of described energy-storage travelling wave tube is too high or charging and discharging currents is excessive, cut off the charging and discharging circuit of energy-storage travelling wave tube。
5. a washing machine, is provided with main power circuit, control circuit, motor and drives the power circuit of described motor operation；It is characterized in that: described motor produces faradic current because of coasting when terminating rinsing dehydration and/or drying dehydration operation at washing machine, and after described faradic current becomes DC current via a rectifier circuit rectifies, transmission a to energy-storage travelling wave tube is charged accumulation of energy；Described energy-storage travelling wave tube is when the electricity of its storage reaches the power reguirements of control circuit, and the control circuit that output electric energy is described is powered。
6. washing machine according to claim 5, it is characterized in that: in described control circuit, be provided with controller and voltage detecting circuit, described voltage detecting circuit detects the electricity that described energy-storage travelling wave tube stores, and feeding back to described controller, controller connects the current supply circuit of main power circuit and control circuit connects and carries out gating switching between the current supply circuit of energy-storage travelling wave tube according to the electricity detected in control circuit。
7. washing machine according to claim 6, it is characterized in that: described energy-storage travelling wave tube is set of cells, total voltage and the single battery voltage of set of cells are detected by described voltage detecting circuit, and inverse electromotive force when terminating rinsing dehydration and/or drying dehydration operation at washing machine, motor produced detects；Described controller is charged according to the set of cells of the inverse electromotive force gating relevant voltage rank detected。
8. washing machine according to claim 7, it is characterised in that: in described control circuit, it is additionally provided with current detection circuit and temperature sensing circuit, detects the charging and discharging currents of set of cells and the temperature of set of cells respectively, and feed back to described controller；Described controller, when temperature set of cells being detected is too high or charging and discharging currents is excessive, cuts off the charging and discharging circuit of set of cells。
9. washing machine according to claim 8, it is characterized in that: in described control circuit, be additionally provided with a power management chip, the detection signal of generation is transmitted after being processed into digital signal to power management chip by described voltage detecting circuit, current detection circuit and temperature sensing circuit, by bus transfer to described controller。
10. the washing machine according to any one of claim 5 to 9, it is characterised in that: described motor is DC Brushless Motor；Described power circuit is provided with the three-phase inverting circuit being formed by connecting by six power tubes, on each power tube, reverse parallel connection has a fly-wheel diode respectively, six fly-wheel diodes constitute described rectification circuit, and the faradic current of motor output is carried out rectification output。
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| CN201410700066.1A CN105696250B (en) | 2014-11-28 | 2014-11-28 | A kind of energy-saving control method and washing machine of washing machine |
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| CN201410700066.1A CN105696250B (en) | 2014-11-28 | 2014-11-28 | A kind of energy-saving control method and washing machine of washing machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499615A (en) * | 2019-07-17 | 2019-11-26 | 青岛新芯智能电子科技有限公司 | A kind of control method of large torque roller washing machine direct driving motor |
| CN113811648A (en) * | 2019-05-13 | 2021-12-17 | 伊莱克斯家用电器股份公司 | Laundry treating machine and method for controlling the same |
| CN114123342A (en) * | 2021-12-06 | 2022-03-01 | 四川虹美智能科技有限公司 | Shared drum washing machine system and energy-saving control method thereof |
| CN116094412A (en) * | 2021-11-05 | 2023-05-09 | 荣耀终端有限公司 | Linear motor driving method, circuit and related device |
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| JP4326320B2 (en) * | 2003-12-18 | 2009-09-02 | 三洋電機株式会社 | Drum washing machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113811648A (en) * | 2019-05-13 | 2021-12-17 | 伊莱克斯家用电器股份公司 | Laundry treating machine and method for controlling the same |
| CN113811648B (en) * | 2019-05-13 | 2024-01-02 | 伊莱克斯家用电器股份公司 | Laundry machine and method for controlling such laundry machine |
| CN110499615A (en) * | 2019-07-17 | 2019-11-26 | 青岛新芯智能电子科技有限公司 | A kind of control method of large torque roller washing machine direct driving motor |
| CN116094412A (en) * | 2021-11-05 | 2023-05-09 | 荣耀终端有限公司 | Linear motor driving method, circuit and related device |
| WO2023077930A1 (en) * | 2021-11-05 | 2023-05-11 | 荣耀终端有限公司 | Linear motor driving method and circuit, and related apparatus |
| CN114123342A (en) * | 2021-12-06 | 2022-03-01 | 四川虹美智能科技有限公司 | Shared drum washing machine system and energy-saving control method thereof |
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| CN105696250B (en) | 2018-07-20 |
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