CN105696250B - A kind of energy-saving control method and washing machine of washing machine - Google Patents
A kind of energy-saving control method and washing machine of washing machine Download PDFInfo
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- CN105696250B CN105696250B CN201410700066.1A CN201410700066A CN105696250B CN 105696250 B CN105696250 B CN 105696250B CN 201410700066 A CN201410700066 A CN 201410700066A CN 105696250 B CN105696250 B CN 105696250B
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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
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Abstract
The invention discloses a kind of energy-saving control method of washing machine and washing machines, when control washing machine terminates rinsing dehydration and/or drying dehydration operates, to the motor in washing machine because induced current caused by coasting is recycled and is stored, and it when the electricity of storage meets the power reguirements needed for the load of washing machine mesolow, powers for the low-voltage load.The present invention is recycled by the energy to the washing machine inverse electromotive force that motor is generated by coasting when completing rinsing dehydration and drying dehydration operation, is stored, and when power reguirements needed for control circuit during the electricity of storage reaches washing machine, instead of main power circuit, circuit is powered in order to control in turn, to which the washing machine of efficiently solving the problems, such as over is in energy waste caused by rinsing dehydration and after drying dehydration, effectively reduce the consumption to extra power, it realizes the maximum of the energy to utilize, then significantly improves the energy valid value of washing machine.
Description
Technical field
The invention belongs to washing machine technology fields, specifically, being to be related to a kind of be used for washing machine in the process of running
The energy-conserving control technology that the energy of generation is recycled and the washing machine based on energy-conserving control technology design.
Background technology
Under global energy requirements sustainable growth and severe situation that actual provision constantly declines, country is to household electric appliances
Energy Efficiency Standard is constantly promoted, and power conservation requirement greatly improves.Existing DC frequency-changing washing machine, motor used in inside are
DC Brushless Motor, the ontology stator of this DC Brushless Motor are the three-phase windings of star-like connection.In order to direct current without
Brush motor realizes drive control, and power-supply system and control system are usually provided in DC frequency-changing washing machine.Wherein, power supply
System is used for electric main rectification, filtering, steady pressure treatment by outside access at straight needed for each power load in control system
Stream power supply, meets the power demand of each load.Control system is then mainly made of power circuit and control circuit, and responsible operation is washed
Program is washed, and DC Brushless Motor is driven to run in order according to the process of program, completes entire washing process.Wherein, it controls
Circuit by with high-speed computation ability microcontroller and other auxiliary circuits such as driving circuit form.Power circuit is big by six
Power IGBT module composition three-phase inverter, the three-phase inverter under the action of control signal that control circuit exports,
The DC bus-bar voltage that power circuit exports is reverse into three-phase alternating current, driving DC Brushless Motor operation exports power.
Traditional washing machine can be all carried out dehydrating when rinsing clothes terminates and washing is finally completed, primary complete
Washing process at least needs to execute triple dewatering processing.DC Brushless Motor will produce reversely when running at high speed, in coil
Electromotive force, dehydration are completed after closing to the control of motor, and due to drag effect, the rotating speed of motor can be smaller and smaller, reversely
Electromotive force also can be smaller and smaller.Final kinetic energy is converted into electric energy, and electric energy is converted to thermal energy consumption and falls.It can be seen that existing laundry
DC Brushless Motor in machine is used as just motor, does not make full use of the energy of its inverse electromotive force generated,
Cause the unnecessary waste of the energy.
Invention content
The present invention is in order to reduce the power consumption of washing machine, it is proposed that a kind of energy-saving control method of washing machine, by laundry
The inverse electromotive force energy that motor generates in machine is recycled, stored and is utilized, to reach energy saving purpose of design.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme：
A kind of energy-saving control method of washing machine, when control washing machine terminates rinsing dehydration and/or drying dehydration operates,
To the motor in washing machine because induced current caused by coasting is recycled and is stored, and meet in the electricity of storage
When washing machine mesolow loads required power reguirements, power for the low-voltage load.
In order to which the induced current generated to motor effectively recycle and store, and keep washing machine monnolithic case
Aesthetics, the built-in energy-storage travelling wave tube preferably in the washing machine, to motor in the coasting generated induced electricity
After stream carries out rectification, for the energy-storage travelling wave tube charging accumulation of energy；The total voltage of the energy-storage travelling wave tube is detected in real time, and described total
When voltage is less than the power reguirements, the discharge loop of energy-storage travelling wave tube is cut off, goes back to main power source power supply.
Preferably, the energy-storage travelling wave tube is battery pack, and when charging to battery pack, detection first is produced by motor
The size of raw inverse electromotive force, and then select the battery pack of relevant voltage rank to carry out according to the size of the inverse electromotive force
Charging accumulation of energy, to improve charge efficiency.
In order to ensure the safety of energy-storage travelling wave tube and control circuit operation, detecting the temperature of the energy-storage travelling wave tube in real time and fill
Discharge current, and it is excessively high in the temperature of the energy-storage travelling wave tube or when charging and discharging currents are excessive, cut off the charge and discharge of energy-storage travelling wave tube
Circuit damages to avoid to energy-storage travelling wave tube.
Based on above-mentioned energy-saving control method, the invention also provides a kind of washing machines, are provided with main power circuit, control electricity
Road, motor and the power circuit for driving the motor operation；The motor washing machine terminate rinsing dehydration and/or
Drying dehydration generates induced current because of coasting when operating, and the induced current is via a rectifier circuit rectifies at direct current
After stream, it is transmitted to an energy-storage travelling wave tube and carries out charging accumulation of energy；The energy-storage travelling wave tube reaches the confession of control circuit in the electricity of its storage
When electricity requires, output electric energy is that the control circuit is powered.
In order to which the charge and discharge sequential to the energy-storage travelling wave tube carries out orderly control, control is provided in the control circuit
Device and voltage detecting circuit processed, the voltage detecting circuit detect the electricity of energy-storage travelling wave tube storage, and feed back to described
Controller, controller connects the current supply circuit of main power circuit in control circuit according to the electricity detected and control circuit connects
It connects and carries out gating switching between the current supply circuit of energy-storage travelling wave tube.
Preferably, the energy-storage travelling wave tube is battery pack, and in order to improve charge efficiency, the voltage detecting circuit is to battery pack
Total voltage and single battery voltage be detected, and washing machine terminate rinsing dehydration and/or drying dehydration operate when pair
The inverse electromotive force that motor generates is detected；The controller gates relevant voltage grade according to the inverse electromotive force detected
Other battery pack charges.
Further, it is additionally provided with current detection circuit and temperature sensing circuit in the control circuit, detects respectively
The charging and discharging currents of battery pack and the temperature of battery pack, and feed back to the controller；The controller is detecting battery
When the temperature of group is excessively high or charging and discharging currents are excessive, the charging and discharging circuit of battery pack is cut off, to ensure that battery pack can be safe
Operation.
In order to reduce the transformation to existing electronic component circuit in control circuit to the greatest extent, the present invention is preferably in the control
A power management chip is added in circuit, and the voltage detecting circuit, current detection circuit and temperature sensing circuit are generated
Detection signal is first transmitted to after power management chip is processed into digital signal, then passes through bus transfer to the controller.
Further, the motor is DC Brushless Motor；It is provided in the power circuit by six power
The three-phase inverting circuit that pipe is formed by connecting distinguishes reverse parallel connection there are one fly-wheel diode on each power tube, and six continuous
It flows diode and constitutes the rectification circuit, rectification output is carried out to the induced current of motor output.
Compared with prior art, the advantages and positive effects of the present invention are：The present invention to washing machine by completing to rinse
The energy for the inverse electromotive force that motor is generated by coasting when dehydration and drying dehydration operation is recycled, is stored, and
It is electric in order to control instead of main power circuit in turn when the electricity of storage reaches in washing machine the power reguirements needed for control circuit
Road power, to the washing machine of efficiently solving the problems, such as over rinsing dehydration with drying dehydration after caused by energy waste,
The consumption to extra power is effectively reduced, the maximum of the energy is realized and utilizes, then significantly improve the energy valid value of washing machine.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of circuit overall architecture block diagram of embodiment of washing machine proposed by the invention；
Fig. 2 is the partial circuit functional block diagram of control circuit and a kind of embodiment of power circuit in Fig. 1；
Fig. 3 is a kind of schematic block circuit diagram for embodiment that charge and discharge control is carried out to the energy-storage travelling wave tube in Fig. 1；
Fig. 4 is the physical circuit schematic diagram of Fig. 3.
Specific implementation mode
The specific implementation mode of the present invention is described in more detail below in conjunction with the accompanying drawings.
The present embodiment is by taking the DC frequency-changing washing machine configured with DC Brushless Motor as an example, to the washing machine section of the present invention
Energy control method is specifically described.
The present embodiment in order to effectively improve the energy valid value of DC frequency-changing washing machine, washing machine complete rinsing dehydration and/or
Drying dehydration function and after closing to the control of its built-in motor, it is high to keep motor due to effect of inertia during this period
The energy stores of inverse electromotive force caused by speed operating are got up, that is, it is defeated outward that motor is reverse into generator during this period
Go out energy, disclosure satisfy that needed for the load of washing machine mesolow by effectively recycling this portion of energy, and in the energy of storage
When power reguirements, it is in turn the low-voltage load power supply in washing machine instead of original main power circuit in washing machine, thus may be used
To reduce consumption of the washing machine to extra power, reach energy-efficient purpose of design.
In the present embodiment, the low-voltage load can refer specifically to the control being laid on the built-in system plate of washing machine
Each power load in circuit, supply voltage are usually required that in 15V or less.And it is transported for being used for drive motor in washing machine
For capable power circuit, since the amplitude of the DC bus-bar voltage needed for it is higher, often in 300V or more, therefore edge is still needed to
It is powered for it with the power supply mode of existing main power circuit.
The present embodiment in order to induced current caused by being operated under effect of inertia to motor carry out effectively recycling and
It utilizes, energy-storage travelling wave tube is added in washing machine internal, it is shown in Figure 1.The energy-storage travelling wave tube can be accumulator, can also be by
Multiple lithium batteries are connected the battery pack to be formed or bulky capacitor etc..Since the stator in DC Brushless Motor is to use star-like company
The three-phase windings for connecing mode, the electric current generated by three-phase windings induction when motor inertia is operated is alternating current, therefore
It needs after the induced current of motor output is rectified into direct current, the charging requirement of energy-storage travelling wave tube could be met.For this purpose, this implementation
Rectification circuit is arranged on the internal circuit board of washing machine in example, connects the DC Brushless Motor, receive by direct current without
The alternating current of brush motor-induced output, and after being rectified into DC current, export to energy-storage travelling wave tube, filled for energy-storage travelling wave tube
Electric accumulation of energy.
In order to simplify circuit design, the present embodiment is preferably simultaneous by the power circuit for being used for drive motor operation in washing machine
As rectification circuit, realize to faradic rectifying conversion.Specifically, in existing washing machine circuit, power electricity
Road is typically the three-phase inverter being formed by connecting by six powerful IGBT pipes V1-V6 or MOSFET pipes, in conjunction with Fig. 2 institutes
Show, for carrying out inversion to the DC bus-bar voltage exported by main power circuit, is supplied with the three-phase alternating current of frequency needed for generation
Electricity, the rotating speed operation of driving DC Brushless Motor as requested, output kinetic energy.The present embodiment is in each power tube V1-V6
Upper one sustained diode 1-D6 of reverse parallel connection respectively, illustrates by taking IGBT pipes V1-V6 shown in Fig. 2 as an example, can be every
A sustained diode 1-D6, and sustained diode 1-D6 are bridged between the collector and emitter of one IGBT pipes V1-V6
Cathode connection IGBT pipes V1-V6 collector, the emitter of the anode connection IGBT pipes V1-V6 of sustained diode 1-D6.By
This one, six sustained diode 1-D6 connect to form three-phase bridge rectification circuit, connect the three-phase of DC Brushless Motor around
Group, when motor exports induced current as generator, after carrying out rectifying conversion to induced current, output DC current to storage
Energy element, for the energy-storage travelling wave tube charging accumulation of energy.
In order to rationally be utilized to the electric energy that energy-storage travelling wave tube stores, the present embodiment is gone back on the internal circuit board of washing machine
It is further provided with electric power management circuit, referring to figs 1 and 3, the energy-storage travelling wave tube is connected, detects energy-storage travelling wave tube in real time
The electric energy of middle storage, and when the electric energy of storage is sufficient for the power demand of control circuit, main power circuit is cut off to control
The power supply of circuit turns to be powered by each power load in energy-storage travelling wave tube in order to control circuit, to reduce the consumption to extra power, reach
To energy-efficient purpose of design.
In the present embodiment, main power circuit can be by the main portion such as bridge rectifier, filter circuit and direct current transducer
It is grouped as, it is shown in Figure 1.Wherein, bridge rectifier is used to receive external electric main, and electric main is rectified into directly
Behind galvanic electricity source, output to filter circuit is filtered, and then the high-voltage DC power supply that generation is stable, such as+310V's are straight
Galvanic electricity source, output provide the DC bus-bar voltage needed for it for three-phase inverter to the three-phase inverter in power circuit.Direct current
Converter is used to carry out decompression transformation to the DC bus-bar voltage that filter circuit exports, to generate low-voltage dc power supply VDD, such as
It is negative to generate different electricity consumptions in control circuit by DC-DC converter for the low-voltage dc power supply of+15V, output to DC-DC converter
Carry required direct current supply VCC, such as the direct current supply of+5V or+3.3V.
In order to ensure that effective power supply of the energy-storage travelling wave tube to control circuit, design electric power management circuit are detecting energy-storage travelling wave tube
After the electricity of storage reaches VDD, such as when+15V, being switched to energy-storage travelling wave tube, circuit is powered in order to control.Specifically, it can will store up
The electric energy of energy element output is transmitted to the input terminal of DC-DC converter, the electric energy for exporting energy-storage travelling wave tube using DC-DC converter
DC power supply VCC needed for each power load is converted into control circuit, and circuit is powered in order to control.
Voltage detecting circuit, current detection circuit and temperature detection electricity are provided in the electric power management circuit of the present embodiment
Road is respectively used to be detected the voltage, charging and discharging currents and operating temperature of energy-storage travelling wave tube in conjunction with shown in Fig. 3, and according to
Testing result generates corresponding detection signal and exports to power management chip, examines each road received via power management chip
After signal processing is surveyed into digital signal, pass through communicating circuit（Such as bus）The controller being transmitted in control circuit, such as have
The microcontroller for having high-speed data processing capacity generates corresponding control signal, to connect main electricity in control circuit by controller
Switching is accurately gated between the current supply circuit of current supply circuit and control circuit the connection energy-storage travelling wave tube of source circuit.With this
Meanwhile controller can accurately judge that energy-storage travelling wave tube is worked as according to the size and temperature change of the charging and discharging currents received
Whether preceding working condition is normal, when occurring abnormal, cuts off the charge circuit of energy-storage travelling wave tube in time by controller and puts
Electrical circuit, to ensure the safety of energy-storage travelling wave tube and the work of whole system circuit.
The present embodiment using battery pack as the energy-storage travelling wave tube for illustrate.The voltage detecting circuit of the present embodiment
The total voltage of battery pack and single battery voltage are detected respectively, and terminates rinsing dehydration in washing machine and/or gets rid of
When dry dehydrating operations, it is closed, motor is generated using voltage detecting circuit reversed by controller control switch element K8
Electromotive force is detected, and then is led according to one or more in the inverse electromotive force selecting switch element K2-K6 detected
Logical, the battery pack to gate relevant voltage rank charges, to improve charge efficiency.Controller is according to the battery pack detected
Total voltage determines which kind of power supply mode selected, when detecting that the total voltage of battery pack is more than given threshold, such as more than VDD
When, control switch element K7 is closed, while cutting off power supply of the main power circuit to control circuit, is then turned by battery pack in order to control
Circuit is powered, to save extra power.
As a kind of preferred circuit building mode of the voltage detecting circuit, the present embodiment is in the voltage detecting circuit
In be provided with multichannel resistance pressure-dividing network, for being provided with N number of concatenated battery in battery pack BAT, then in voltage detecting
The roads N+1 resistance pressure-dividing network should be set in circuit, and the N is the positive integer more than 1.As shown in figure 4, being said by taking N=5 as an example
It is bright, in order to realize the detection to single battery voltage and the detection to inverse electromotive force caused by motor, the present embodiment
Connect resistance pressure-dividing network all the way correspondingly between the anode and ground of each battery, for example, by resistance R32-R36,
Five road resistance pressure-dividing networks of R39-R43 compositions export five reflection batteries by the divider node of five road resistance pressure-dividing networks
The sampled voltage VS1-VS5 of voltage is transmitted separately to five ADC pin AD2-AD6 of power management chip U1, passes through power supply pipe
Analog-digital converter inside reason chip U1 is converted into digital signal, and it is possible thereby to calculate each monocell voltage and
The total voltage of entire battery pack.Calculated voltage value is sent to controller MCU by power management chip U1 by communicating circuit,
For subsequent charge control.Resistance R48, R49 are connected to form the 6th road resistance pressure-dividing network, by the 6th road resistance
One end of potential-divider network is grounded, and the other end is connected to the DC side of power circuit IPM by switch element K8, and divider node connects
Another ADC pin AD1 of power management chip U1 is met, the inverse electromotive force VF for being generated to motor carries out sampling inspection
It surveys.
By in battery pack BAT, the anode of each battery is each by a routing current-limiting resistance R22-R36 and switch element
K2-K6 branches to be formed of connecting are connected to the DC side of the power circuit IPM, and the controller MCU is anti-according to what is detected
To the size of electromotive force VF, control in the switch element K2-K6 one or more conducting, and then select with reversely it is electronic
The battery pack of gesture VF relevant voltage ranks charges, to improve charge efficiency.
In the temperature sensing circuit of the present embodiment, it is provided with and is formed by connecting by thermistor RZ and divider resistance R37
Bleeder circuit, as shown in figure 4, being connected between DC power supply VCC and ground, divider node connects the power management chip U1
ADC pins AD0.The thermistor RZ is built in battery pack BAT, the temperature change of induced cell group BAT, and with electricity
The temperature change of pond group BAT changes the resistance value of its own, and then changes the voltage value at the divider node.The power management
Chip U1 converses the temperature value of battery pack BAT according to the voltage value received, is transmitted to controller MCU.Controller MCU according to
The temperature value received judges whether the operating temperature of battery pack BAT is normal, defeated if having exceeded the safe temperature range of setting
Go out to control Signal-controlled switch element K7 to disconnect, the discharge loop of cut-out battery pack BAT, that is, disconnects battery pack BAT and DC-DC and turn
The connection of parallel operation U3, and control simultaneously is connected to the switch element K9 between direct current transducer U2 and DC-DC converter U3 and is closed,
Turn by main power circuit circuit power supply in order to control.When controller MCU detects battery pack BAT temperature anomalies, in order to ensure electricity
Pond group BAT charging safety, while exporting each road that control signal control is connected between power circuit IPM and battery pack BAT and opening
It closes element K2-K6 to disconnect, to cut off the charge circuit of battery pack BAT.
In order to which the charging and discharging currents to battery pack BAT are detected, the present embodiment is connected sampling resistor in battery pack BAT
RS2 is specifically attached between the cathode and ground of battery pack BAT.One end of sampling resistor RS2 connection battery packs BAT is passed through
Concatenated first divider resistance R31 and the second divider resistance R38 connection reference power source VREF, by the first divider resistance R31 and
The intermediate node of two divider resistance R38 be connected to the in-phase input end of an operational amplifier U4+, the operational amplifier U4's is anti-
Phase input terminal-is connected to the other end of the sampling resistor RS2 by current-limiting resistance R30, and passes through feedback resistance R44 connections institute
State the output end of operational amplifier U4.It is sampled, and is passed through by the electric current of operational amplifier U4 convection current over-sampling resistance RS2
Resistance R45 is exported to the ADC pin AD7 of power management chip U1, such as power management chip U1, and then is converted into digital signal
It is sent to controller MCU, realizes the real-time monitoring to battery pack BAT charging and discharging currents.
In order to realize that overcurrent protection, the present embodiment are additionally provided with a comparator U5, such as Fig. 4 in the current detection circuit
It is shown.The inverting input-of the comparator U5 is connected to one end of the sampling resistor RS2 connection battery packs BAT, will be compared
In-phase input end+connection reference voltage compared with device U5, the reference voltage can utilize divider resistance R28, R29 to DC power supply
VCC divides to be formed.According to the current threshold of setting, the resistance value of divider resistance R28, R29 are adjusted, the reference electricity for making its partial pressure be formed
Pressure is just corresponding with the current threshold.When the charging and discharging currents of battery pack BAT are normal, the pressure at the both ends sampling resistor RS2
Drop is less than the reference voltage, therefore exports high level signal by comparing device U5, is transmitted to the I/O of power management chip U1
Mouthful.When the charging and discharging currents of battery pack BAT increase, when being more than current threshold, the pressure drop at the both ends sampling resistor RS2 is more than described
Reference voltage, therefore low level overcurrent protection signal Io is exported by comparing device U5, it is transmitted to the power management chip U1
I/O mouths.The power management chip U1 is when detecting that its I/O mouthfuls is set to low level, output alarm signal to controller
MCU cuts off the charging and discharging circuit of battery pack BAT by controller MCU, i.e. control switch element K2-K7 is disconnected, to battery pack
BAT carries out overcurrent protection.
With reference to Fig. 4, the specific work 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 as motor function
Operation.It is closed at this point, controller MCU controls the switch element K1 being connected between power circuit IPM and main power circuit first
It closes, electric main rectifying and wave-filtering is transformed into direct current by the electric main of 220V by bridge rectifier BD1 and filter circuit E1, C1
Busbar voltage is transmitted to the DC side of power circuit IPM by switch element K1.During this period, switch element K2-K6 and K8
It disconnects, switch element K7 and K9 selects one to be closed according to the remaining capacity situation of battery pack BAT, is DC-DC converter U3
Power supply, to generate the direct current supply needed for control circuit.
Controller MCU is controlled according to the current operating status of washing machine, output PWM modulation signal in power circuit IPM
Three-phase inverter is run（Control the break-make sequential of six high-power IGBT pipe V1-V6）, DC bus-bar voltage is reverse into three
Phase alternating current is motor.When certain two-phase of the stator winding of motor interior is powered, the electric current and rotor permanent magnetic
Magnetic field interaction caused by the magnetic pole of steel and generate torque, driving rotor rotation, then by position sensor U6 by rotor magnetic
Steel evolution feeds back to controller MCU at electric signal.Controller MCU determines rotor position according to the electric signal checked
It sets, further according to the break-make sequential of rotor-position control IGBT pipes V1-V6, to make stator items winding be connected in a certain order,
Stator phase currents commutation according to a certain order with the variation of rotor-position.Since the conducting order of IGBT pipes V1-V6 is and turns
What sub- corner synchronized, thus play the role of the commutation of mechanical commutator, driving DC Brushless Motor operation, output kinetic energy.
When washing machine is in rinsing dehydration or after the completion of drying dehydration, when DC Brushless Motor is in coasting state,
In order to efficiently use the inverse electromotive force of DC Brushless Motor generation, controller MCU first opens switch element K1, switches
The size of the inverse electromotive force generated to charge circuit, closure switch element K8 detection motor, so it is anti-according to what is detected
It is closed to electromotive force VF, one or more of selecting switch element K2-K6, and then passes through different current-limiting resistance R22-R26
Battery pack charging to relevant voltage rank.At the same time, by power management chip U1 in real time to the total voltage of battery pack BAT
It is detected with cell voltage, and the charging current and operating temperature of battery pack BAT is measured in real time, avoided out
Existing excessive charging current and excessively high Wen Sheng.
After charging complete, switch element K2-K6, the charge circuit of cut-out battery pack BAT, according to what is detected are disconnected
The total voltage of battery pack BAT determines which kind of power supply mode used.If the electricity of battery pack BAT reaches power reguirements, such as up to
To VDD, then closure switch element K7, the voltage of battery pack BAT is converted by DC-DC converter U3 needed for control circuit
DC power supply VCC, in order to control each load supplying in circuit.During using battery pack BAT power supplies, battery is detected in real time
Voltage, electric current and the temperature of group BAT, once occur that the undertension of battery pack BAT, electric current are excessive or temperature is excessively high makes, control
Device MCU processed disconnects timely control switch element K7, the discharge loop of cut-out battery pack BAT, and is closed at switch element K9,
Turn by main power circuit, circuit continues to power in order to control.
In the present embodiment, relay may be used in the switch element K1-K9 or other controllable switch elements carry out
Circuit design, the present embodiment is to this without concrete restriction.
The energy-conserving control technology of the present embodiment is applied in the design of current existing DC frequency-changing washing machine, it can not only
Carrying out positive electric energy rotation to DC Brushless Motor can control, moreover it is possible to DC Brushless Motor be made to be reverse into generator to storage
Energy element charging accumulation of energy, by effectively utilizing DC Brushless Motor because of inverse electromotive force caused by coasting, thus
Energy has been saved, the energy valid value of DC frequency-changing washing machine is improved.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of energy-saving control method of washing machine, it is characterised in that：Terminate rinsing dehydration in control washing machine and/or drying is de-
When water operates, to the motor in washing machine because induced current caused by coasting carries out recycling and to built in washing machine
Battery pack charging accumulation of energy detect the big of the inverse electromotive force generated by motor first when charging to battery pack
Small, battery pack total voltage and single battery voltage, and then relevant voltage grade is selected according to the size of the inverse electromotive force
Other battery pack carries out charging accumulation of energy；When the electricity of storage meets in washing machine the power reguirements needed for control circuit, for institute
The control circuit power supply stated.
2. the energy-saving control method of washing machine according to claim 1, it is characterised in that：Motor is transported in the inertia
After generated induced current carries out rectification when turning, for the battery pack charging accumulation of energy；The total voltage of the battery pack is detected,
And when the total voltage is less than the power reguirements, the discharge loop of battery pack is cut off, go back to main power source power supply.
3. the energy-saving control method of washing machine according to claim 2, it is characterised in that：Detect the temperature of the battery pack
And charging and discharging currents, and it is excessively high in the temperature of the battery pack or when charging and discharging currents are excessive, cut off the charge and discharge of battery pack
Circuit.
4. a kind of washing machine is provided with main power circuit, control circuit, motor and the power for driving the motor operation
Circuit；It is characterized in that：The motor is when washing machine terminates rinsing dehydration and/or drying dehydration is operated due to coasting
Generate induced current, the induced current via a rectifier circuit rectifies at DC current after, be transmitted to a battery pack and filled
Electric accumulation of energy；Controller and voltage detecting circuit are provided in the control circuit, the voltage detecting circuit is to battery pack
Total voltage and single battery voltage are detected, and when washing machine terminates rinsing dehydration and/or drying dehydration is operated to electricity
The inverse electromotive force that motivation generates is detected, and feeds back to the controller, and the controller is reversed according to what is detected
The battery pack of electromotive force gating relevant voltage rank charges；The battery pack reaches control circuit in the electricity of its storage
When power reguirements, output electric energy is that the control circuit is powered.
5. washing machine according to claim 4, it is characterised in that：The voltage detecting circuit detects the battery storage
Electricity, and feed back to the controller, controller is according to the electricity detected in control circuit connection main power circuit
Gating switching is carried out between current supply circuit and the current supply circuit of control circuit connection battery pack.
6. washing machine according to claim 5, it is characterised in that：Current detecting electricity is additionally provided in the control circuit
Road and temperature sensing circuit, detect the temperature of the charging and discharging currents and battery pack of battery pack respectively, and feed back to the control
Device；The controller is excessively high or when charging and discharging currents are excessive in the temperature for detecting battery pack, cuts off the charge and discharge of battery pack
Circuit.
7. washing machine according to claim 6, it is characterised in that：A power management is additionally provided in the control circuit
Chip, the voltage detecting circuit, current detection circuit and temperature sensing circuit are by the detection signal transmission of generation to power supply pipe
After chip processing is managed into digital signal, pass through bus transfer to the controller.
8. washing machine according to any one of claims 4 to 7, it is characterised in that：The motor is brush DC electricity
Motivation；The three-phase inverting circuit being formed by connecting by six power tubes is provided in the power circuit, in each power tube
There are one fly-wheel diodes for upper reverse parallel connection respectively, and six fly-wheel diodes constitute the rectification circuit, to motor output
Induced current carry 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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| CN105696250A CN105696250A (en) | 2016-06-22 |
| CN105696250B true CN105696250B (en) | 2018-07-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020228941A1 (en) * | 2019-05-13 | 2020-11-19 | Electrolux Appliances Aktiebolag | Laundry-treating machine and method for controlling such a laundry-treating machine |
| CN110499615B (en) * | 2019-07-17 | 2024-05-07 | 青岛芯瑞智能控制有限公司 | Control method of direct-drive motor of large-torque drum washing machine |
| CN116094412A (en) * | 2021-11-05 | 2023-05-09 | 荣耀终端有限公司 | Linear motor driving method, circuit and related device |
| CN114123342B (en) * | 2021-12-06 | 2023-05-12 | 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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|---|---|---|---|---|
| CN2073893U (en) * | 1990-03-16 | 1991-03-27 | 文海涛 | Energy storage type retarding device |
| JP4326320B2 (en) * | 2003-12-18 | 2009-09-02 | 三洋電機株式会社 | Drum washing machine |
| CN201729996U (en) * | 2010-04-28 | 2011-02-02 | 海尔集团公司 | Washing machine capable of connecting two energy systems |
| CN103572552A (en) * | 2013-10-21 | 2014-02-12 | 邵宏 | Washing machine with hydroelectric generation and water recovery function |
| CN204644703U (en) * | 2014-11-28 | 2015-09-16 | 青岛海尔科技有限公司 | A kind of energy-saving control circuit for washing machine and washing machine |
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- 2014-11-28 CN CN201410700066.1A patent/CN105696250B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073893U (en) * | 1990-03-16 | 1991-03-27 | 文海涛 | Energy storage type retarding device |
| JP4326320B2 (en) * | 2003-12-18 | 2009-09-02 | 三洋電機株式会社 | Drum washing machine |
| CN201729996U (en) * | 2010-04-28 | 2011-02-02 | 海尔集团公司 | Washing machine capable of connecting two energy systems |
| CN103572552A (en) * | 2013-10-21 | 2014-02-12 | 邵宏 | Washing machine with hydroelectric generation and water recovery function |
| CN204644703U (en) * | 2014-11-28 | 2015-09-16 | 青岛海尔科技有限公司 | A kind of energy-saving control circuit for washing machine and washing machine |
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| CN105696250A (en) | 2016-06-22 |
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