CN111928427A - Air conditioner control system, air conditioner and control method thereof - Google Patents
Air conditioner control system, air conditioner and control method thereof Download PDFInfo
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- CN111928427A CN111928427A CN202010751513.1A CN202010751513A CN111928427A CN 111928427 A CN111928427 A CN 111928427A CN 202010751513 A CN202010751513 A CN 202010751513A CN 111928427 A CN111928427 A CN 111928427A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The invention discloses an air conditioner control system, an air conditioner and a control method thereof, wherein the control system comprises: the alternating current power supply circuit is used for supplying alternating current; the current conversion circuit is used for receiving alternating current and converting the alternating current into high-voltage direct current so as to supply power to a high-voltage direct current load of the air conditioner; and the power-on control circuit is respectively connected with the alternating current power supply circuit and the current conversion circuit and is used for controlling the alternating current power supply circuit not to output alternating current to the current conversion circuit when the air conditioner is in a standby state and controlling the alternating current power supply circuit to output the alternating current to the current conversion circuit when the air conditioner is started. The invention can cut off the direct current strong current circuit and stop supplying power to the high-voltage direct current load when the air conditioner is in standby state, so that the high-voltage direct current load does not generate standby power consumption, thereby effectively reducing the standby power consumption of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control system, an air conditioner and a control method of the air conditioner.
Background
The inverter air conditioner, especially the inverter air conditioner product that the outdoor electricity was electrified, its outer quick-witted board circuit is many, if include strong, weak current circuit etc. and the function is complicated.
In a standby state of the existing air conditioner, almost all circuit devices on the outer unit electric control board are powered on, so that corresponding standby power consumption can be generated. However, in the standby state, some circuit devices, such as a high-voltage dc load in a dc strong current circuit, are not operated, but standby power consumption is generated due to power-on, and the generated standby power consumption is relatively high, which results in relatively large standby power consumption of the current air conditioner.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, an object of the present invention is to provide an air conditioner control system, which can cut off a dc strong current circuit and stop supplying power to a high-voltage dc load when an air conditioner is in a standby state, so that the high-voltage dc load does not generate standby power consumption, thereby effectively reducing the standby power consumption of the air conditioner.
Therefore, the second purpose of the invention is to provide an air conditioner.
To this end, a third object of the present invention is to provide a control method of an air conditioner.
To this end, a fourth object of the invention is to propose a computer-readable storage medium.
To achieve the above object, an embodiment of a first aspect of the present invention discloses an air conditioner control system, including: an alternating current power supply circuit for supplying alternating current; the current conversion circuit is used for receiving the alternating current and converting the alternating current into high-voltage direct current so as to supply power to a high-voltage direct current load of the air conditioner; the power-on control circuit is respectively connected with the alternating current power supply circuit and the current conversion circuit and is used for controlling the alternating current power supply circuit not to output the alternating current to the current conversion circuit when the air conditioner is in a standby state and controlling the alternating current power supply circuit to output the alternating current to the current conversion circuit when the air conditioner is started.
According to the air conditioner control system disclosed by the embodiment of the invention, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected when the air conditioner is in the standby state, the power supply to the high-voltage direct current load is stopped, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
In addition, the air conditioner control system according to the above embodiment of the present invention may further include the following additional technical features:
in some examples, the power-up control circuit includes: the first end of the first relay is connected with the output end of the alternating current power supply circuit, the second end of the first relay is connected with the current conversion circuit, and the control end of the first relay is connected with a first low-voltage power supply; the first end of the second relay is connected with the output end of the alternating current power supply circuit, the second end of the second relay is connected with the current conversion circuit through a PTC thermistor of the air conditioner, and the control end of the second relay is connected with a second low-voltage power supply; and the control unit is respectively connected with the first low-voltage power supply and the second low-voltage power supply and used for controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay and controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay so as to enable the alternating-current power supply circuit not to output the alternating current to the current conversion circuit when the air conditioner is in standby.
In some examples, the control unit is further to: when the air conditioner starts, control the second low voltage power supply to the control end power supply of second relay makes first relay actuation, and second relay actuation is first predetermineeing the time after, control first low voltage power supply to the control end power supply of first relay makes first relay actuation, so that alternating current power supply circuit way is to the current conversion circuit output the alternating current.
In some examples the control unit is further to: and after the first relay is attracted for a second preset time, controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected.
In some examples, the control unit is further to: and when the air conditioner is not restarted within a third preset time after being turned off, controlling the first low-voltage power supply not to supply power to the control end of the first relay, so that the first relay is disconnected, and controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected, and the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
In some examples, further comprising: and the switching power supply circuit is connected with the alternating current power supply circuit and is used for outputting low-voltage direct current according to the alternating current provided by the switching power supply circuit so as to supply power to a low-voltage direct current load of the air conditioner.
In some examples, the switching power supply circuit includes: the alternating current receiving sub-circuit is connected with the alternating current power supply circuit and used for receiving the alternating current; the rectifier sub-circuit is used for rectifying and filtering the alternating current; and the direct current output sub-circuit is used for converting the alternating current after rectification and filtering into the low-voltage direct current and outputting the low-voltage direct current in a double-output mode.
To achieve the above object, an embodiment of a second aspect of the present invention discloses an air conditioner including an air conditioner control system according to the above embodiment of the present invention.
According to the air conditioner disclosed by the embodiment of the invention, when in standby, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected and the power supply to the high-voltage direct current load is stopped when in standby, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
In order to achieve the above object, an embodiment of a third aspect of the present invention discloses a control method of an air conditioner, including: the method comprises the following steps: when the air conditioner is in a standby state, controlling the alternating current power supply circuit not to output alternating current to the current conversion circuit, and enabling the current conversion circuit not to supply power to a high-voltage direct current load of the air conditioner; when the air conditioner is started, the alternating current power supply circuit is controlled to output the alternating current to the current conversion circuit, so that the current conversion circuit converts the alternating current into high-voltage direct current to supply power to the high-voltage direct current load.
According to the control method of the air conditioner, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected when the air conditioner is in the standby state, power supply to the high-voltage direct current load is stopped, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
In addition, the control method of the air conditioner according to the above embodiment of the present invention may further include the following additional technical features;
in some examples, controlling the ac power supply circuit not to output the ac power to the current conversion circuit when the air conditioner is in a standby state includes: and controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay, controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay, so that the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
In some examples, the controlling the ac power supply circuit to output the ac power to the current conversion circuit at the time of starting the air conditioner includes: control the second low voltage power supply to the control end power supply of second relay makes first relay actuation, and after the first predetermined time of second relay actuation, control first low voltage power supply to the control end power supply of first relay makes first relay actuation, so that alternating current power supply circuit way is to the output of current conversion circuit the alternating current.
In some examples, further comprising: and after the first relay is attracted for a second preset time, controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected.
In some examples, further comprising: and when the air conditioner is not restarted within a third preset time after being turned off, controlling the first low-voltage power supply not to supply power to the control end of the first relay, so that the first relay is disconnected, and controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected, and the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
To achieve the above object, an embodiment of a fourth aspect of the present invention discloses a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements a control method of the air conditioner according to the above embodiment of the present invention.
According to the computer-readable storage medium provided by the embodiment of the invention, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected and the power supply to the high-voltage direct current load is stopped when the air conditioner is in the standby state, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an air conditioner control system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power-up control circuit in accordance with one embodiment of the present invention;
FIG. 3 is a schematic diagram of a current conversion circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a switching power supply circuit according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
An air conditioner control system, an air conditioner and a control method thereof according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.
The inverter air conditioner, especially the inverter air conditioner product of outdoor electrification, the outer machine board circuit, such as strong, weak current circuit is many, and the function is complicated. The inventor researches and discovers that after the frequency conversion outdoor unit is electrified and is not controlled, all circuits on an electric control board of the outdoor unit, such as weak current circuits including a switching Power supply circuit, a chip and a periphery, a sensor, a current and voltage detection circuit, a protection circuit, a relay control circuit and the like, and direct current strong current circuits including a filter rectification circuit, a Power Factor Correction (PFC) circuit, a fan, a press inverter circuit (a general integrated Power module) and the like are electrified, and standby Power consumption is generated when the circuits are electrified. The standby power consumption of the current partial variable frequency air conditioner is large and even exceeds 10W, which causes energy waste. Therefore, a related solution is needed to reduce standby power consumption.
Based on the above problems, embodiments of the present invention provide an air conditioner control system, an air conditioner and a control method thereof. According to the embodiment of the invention, through a simple change and control method, a part of circuit devices which are not necessarily electrified are not electrified during standby, so that part of standby power consumption is saved, and the standby power consumption of the air conditioner is reduced; and when the computer is started, the part of circuits are electrified to work normally. On one hand, the power-on circuit and the control are improved, and the rectifying circuit of the main loop is disconnected in the standby state, so that the direct current strong current circuit does not generate standby power consumption, and the aim of reducing the standby power consumption is fulfilled; on the other hand, a rectifying circuit is added to supply power to the switching power supply circuit separately so as to provide a control power supply and ensure the normal work and standby of the weak current circuit.
Specifically, fig. 1 is a schematic structural diagram of an air conditioner control system according to an embodiment of the present invention. As shown in fig. 1, the air conditioner control system 100 includes: an ac power circuit 110, a current conversion circuit 120, and a power-up control circuit 130.
The ac power circuit 110 is used to supply ac power.
Specifically, as shown in fig. 2, the ac power circuit 110 includes, for example, an ac L, N line and a filter circuit, transmits current through an ac L, N line, and outputs ac power after being filtered by the filter circuit.
The current converting circuit 120 is configured to receive the ac power output by the ac power circuit 110 and convert the ac power into high-voltage dc power to supply power to the high-voltage dc load of the air conditioner.
Specifically, the high-voltage dc load includes, for example: a filter rectification circuit, a PFC circuit, a fan, a press inverter circuit and other direct current strong current circuits.
The power-on control circuit 130 is respectively connected to the ac power circuit 110 and the current converting circuit 120, and the power-on control circuit 130 is configured to control the ac power circuit 110 not to output ac power to the current converting circuit 120 when the air conditioner is in a standby state, and to control the ac power circuit 110 to output ac power to the current converting circuit 120 when the air conditioner is started.
Therefore, during standby, the current converting circuit 120 cannot receive the ac power from the ac power supply 110, and therefore cannot output high-voltage dc power, i.e., cannot supply power to the high-voltage dc load of the air conditioner, so that the high-voltage dc load does not generate standby power consumption, thereby effectively reducing the standby power consumption of the air conditioner; when the air conditioner is started, the current conversion circuit 120 receives the alternating current from the alternating current power supply 110, converts the alternating current into high-voltage direct current to supply power to a high-voltage direct current load of the air conditioner, and enables the high-voltage direct current load to be electrified and operated, so that the air conditioner is started and operated normally.
In one embodiment of the present invention, as shown in fig. 2, the power-on control circuit 130 includes: a first relay RL1, a second relay RL2 and a control unit (not shown in the figure).
The first end 1 of the first relay RL1 is connected with the output end of the alternating current power supply circuit 110, the second end 2 of the first relay RL1 is connected with the current conversion circuit 120, and the control end 3 of the first relay RL1 is connected with the first low-voltage power supply. The first low voltage power supply may output a voltage of 12V, for example.
A first end 4 of the second relay RL2 is connected to the output end of the ac power supply circuit 110, a second end 5 of the second relay RL2 is connected to the current converting circuit 120 through a PTC (Positive Temperature Coefficient) thermistor RT1 of the air conditioner, and a control end 6 of the second relay RL2 is connected to the second low voltage power supply. The second low voltage power supply may output a voltage of 12V, for example.
The control unit is respectively connected with the first low-voltage power supply and the second low-voltage power supply and is used for controlling the first low-voltage power supply not to supply power to the control end 3 of the first relay RL1 to enable the first relay RL1 to be disconnected, controlling the second low-voltage power supply not to supply power to the control end 6 of the second relay RL2 to enable the second relay RL2 to be disconnected, and enabling the alternating-current power supply circuit 110 not to output alternating current to the current conversion circuit 120 when the air conditioner is in standby. Furthermore, the current converting circuit 120 cannot receive the ac power from the ac power supply 110, and therefore cannot output the high voltage dc power, that is, cannot supply power to the high voltage dc load of the air conditioner, so that the high voltage dc load does not generate standby power consumption, thereby effectively reducing the standby power consumption of the air conditioner.
In one embodiment of the invention, the control unit is further configured to: when the air conditioner is started, the second low-voltage power supply is controlled to supply power to the control end 6 of the second relay RL2, the first relay RL1 is enabled to be attracted, and after the second relay RL2 is attracted for a first preset time, the first low-voltage power supply is controlled to supply power to the control end 3 of the first relay RL1, the first relay RL1 is enabled to be attracted, so that the alternating-current power supply circuit 110 outputs alternating current to the current conversion circuit 120. Further, the current converting circuit 120 receives the ac power from the ac power source 110, and converts the ac power into high voltage dc power to supply power to the high voltage dc load of the air conditioner, so as to energize the high voltage dc load to operate, thereby normally starting the air conditioner. The first preset time is a preset empirical value, and in a specific embodiment, the first preset time is, for example, 3 seconds.
In a specific embodiment, as shown in fig. 3, the current converting circuit 120 includes, for example: rectifier bridge BG1, PFC circuit and direct current high voltage power supply. The current converting circuit 120 is used to convert the alternating current into high-voltage direct current. Specifically, when the output terminals L-out and N-out of the ac L, N line input ac power to the current converting circuit 120, the current converting circuit 120 generates a dc high voltage power supply to supply the dc high voltage power to the high voltage dc loads such as the compressor and the fan power module.
Specifically, a first relay RL2 for PTC control is added to the whole ac power supply circuit, so that the PTC thermistor RT1 is not directly energized, but the energization of RT1 is controlled by the first relay. When the air conditioner is in a standby state, the first relay RL2 does not pull in, and thus the electrolytic capacitor E1 in the current conversion circuit 120 cannot be charged. On the other hand, the first relay RL1 is pulled in again after the first preset time after the second relay RL2 is pulled in the control timing, and therefore the first relay RL1 is not pulled in during standby. Thus, the output terminals L-out, N-out of the AC L, N line are not able to power the circuits connected to the rear when the air conditioner is in standby. That is, during standby, the ac power circuit 110 cannot supply power to the current converting circuit 120, so that the current converting circuit 120 cannot supply high-voltage dc power to the high-voltage dc load, and the high-voltage dc load does not operate, thereby reducing the standby power consumption of the air conditioner.
In one embodiment of the invention, the control unit is further configured to: after the first relay RL1 is attracted for a second preset time, the second low-voltage power supply is controlled not to supply power to the control end 6 of the second relay RL2, so that the second relay RL2 is disconnected. That is, after the first relay RL1 and the first relay RL1 are attracted to start the air conditioner and last for a second preset time, the second relay RL2 is controlled to be disconnected. The second preset time is a preset empirical value, and in a specific embodiment, the second preset time is, for example, 500 milliseconds.
Specifically, when the air conditioner is in power-on standby, the control unit controls the second relay RL2 and the first relay RL1 to be in an off state. When the air conditioner is started, the second relay RL2 is firstly attracted, the electrolytic capacitor E1 is charged through PTC, the first relay RL1 is attracted after the first preset time (for example, 3s) of charging is carried out, the second relay RL2 is disconnected after the second preset time (for example, 500ms) of charging is delayed, and starting commands of a compressor, an outdoor fan and the like can be sent after the charging process is completed, so that the standby power consumption of the air conditioner can be reduced, and the normal starting of the air conditioner can also be realized. This process is the PTC power-on sequence.
In one embodiment of the invention, the control unit is further configured to: when the air conditioner is not restarted within the third preset time after being turned off, the first low-voltage power supply is controlled not to supply power to the control end 3 of the first relay RL1, the first relay RL1 is turned off, the second low-voltage power supply is controlled not to supply power to the control end 6 of the second relay RL2, and the second relay RL2 is turned off, so that the alternating-current power supply circuit 110 does not output alternating current to the current conversion circuit 120. The third predetermined time is a predetermined empirical value, and in a specific embodiment, the third predetermined time is, for example, 3 minutes.
Specifically, if the air conditioner is not restarted within the third preset time after the air conditioner is turned off, it is considered that the user has no intention to restart the air conditioner for a while, that is, the air conditioner is in the standby state and is not started for a while, the first low voltage power supply is controlled not to supply power to the control terminal 3 of the first relay RL1, so that the first relay RL1 is turned off, the second low voltage power supply is controlled not to supply power to the control terminal 6 of the second relay RL2, so that the second relay RL2 is turned off, so that the ac power supply circuit 110 does not output ac power to the current conversion circuit 120, and thus standby power consumption of the air conditioner is reduced.
In a specific example, for example, when the start-up command is not received again within a third preset time (e.g., 3min) after the air conditioner is turned off, the user is considered not to use the air conditioner for a while, and the control unit controls to turn off the first relay RL1 and the second relay RL 2. Further, if the air conditioner has a start-up command within the timing time (e.g. 3min), the timing is cancelled, and the actions of opening the first relay RT1 and the second relay RT2 are turned off, i.e. the first relay RT1 and the second relay RT2 are kept closed. If the air conditioner is in a standby state, that is, the PTC control is in a power-off state, when there is a power-on start command, the above-mentioned PTC power-on sequence action is repeated, which is not described herein again.
Further, when the air conditioner is turned off at a preset temperature, at this time, the temperature control turn-off control part may consider that the air conditioner is in an operating state, and may restart the compressor and the fan at any time along with a temperature change, so that power-off control of the first relay RL1 and the second relay RL2 is not performed, that is, the dc high-voltage load is powered on to operate, and there is no low standby control at this time.
In one embodiment of the present invention, as shown in fig. 4, the air conditioner control system 100 further includes a switching power supply circuit 140.
The switching power supply circuit 140 is connected to the ac power supply circuit 110, and is configured to output low-voltage dc power according to the ac power provided by the switching power supply circuit 140, so as to supply power to a low-voltage dc load of the air conditioner. That is, the switching power supply circuit 140 is directly connected to the ac power supply circuit 110 to realize independent power supply, so that no matter in a standby state or a start-up operation state, the switching power supply circuit 140 is always powered, the ac power output by the ac power supply circuit 110 can be converted into low-voltage dc power to supply power to the low-voltage dc load of the air conditioner, so that the low-voltage dc load can be normally powered on to operate. The low-voltage dc load includes, for example, a chip, a periphery, a sensor, a current/voltage detection circuit, a protection circuit, a relay control circuit, and other weak current circuits.
Specifically, the switching power supply circuit 140 includes: an alternating current receiving sub-circuit 141, a rectifier sub-circuit 142 and a direct current output sub-circuit 143.
The ac power receiving sub-circuit 141 is connected to the ac power supply circuit 110, and is configured to receive ac power; the rectifier sub-circuit 142 is used for rectifying and filtering the alternating current; the dc output sub-circuit 143 is configured to convert the ac power after the rectification and filtering process into a low-voltage dc power and output the low-voltage dc power.
Specifically, as shown in connection with fig. 3, the alternating current receiving sub-circuit 141 includes, for example, L-out1 and N-out to receive the alternating current of the output of the alternating current power supply circuit 110. The rectifier sub-circuit 142 includes, for example, an NTC (Negative Temperature Coefficient) thermistor RT2, a rectifier bridge BG2, and a smoothing electrolyte E2 to perform a rectifying and smoothing process on the alternating current. The dc output sub-circuit 143 is configured to convert the ac power after the rectification and filtering process into a low-voltage dc power and output the low-voltage dc power. The low-voltage dc includes, for example, low-voltage dc of various voltages, that is, the dc output sub-circuit 143 can output a plurality of control power supplies of various voltages, such as 5V, 12V, 15V, and so on, so as to meet power supply requirements of different low-voltage dc loads.
Specifically, the NTC thermistor RT2, the rectifier bridge BG2, and the filter electrolyte E2 are added to the switching power supply circuit 140, and the output terminals L-out1 and N-out of the ac L, N line are used to supply ac power to the switching power supply circuit 140, so as to ensure that the switching power supply circuit 140 is always powered and can generate various control power supplies with different voltages, such as +5V, +12V, +15V, and the like, regardless of the standby or the startup of the outdoor Unit, thereby facilitating power supply to weak circuits, such as a main control MCU (Microcontroller Unit) chip circuit, a sensor circuit, a protection circuit, and the like, meeting the power supply requirements of different low-voltage dc loads, and not affecting the normal standby and operating states of the air conditioner.
According to the air conditioner control system disclosed by the embodiment of the invention, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected when the air conditioner is in the standby state, the power supply to the high-voltage direct current load is stopped, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
A further embodiment of the present invention further provides an air conditioner including the air conditioner control system described in any one of the above embodiments of the present invention.
It should be noted that the specific implementation manner of the air conditioner in the embodiment of the present invention is similar to the specific implementation manner of the air conditioner control system in the embodiment of the present invention, and please refer to the description of the system part specifically, and details are not described here for reducing redundancy.
According to the air conditioner disclosed by the embodiment of the invention, when in standby, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected and the power supply to the high-voltage direct current load is stopped when in standby, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
In addition, other configurations and functions of the air conditioner according to the above-mentioned embodiment of the present invention are known to those skilled in the art, and are not described in detail to reduce redundancy.
The invention further provides a control method of the air conditioner.
Fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. The air conditioner is, for example, the air conditioner described in any of the above embodiments of the present invention, that is, the air conditioner includes the air conditioner control system described in any of the above embodiments of the present invention.
As shown in fig. 5, the control method of the air conditioner includes the following steps:
step S1: when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the current conversion circuit does not supply power to a high-voltage direct current load of the air conditioner.
Specifically, an alternating current power supply circuit is used to supply alternating current. The ac power supply circuit includes, for example, an ac L, N line and a filter circuit, transmits current through an ac L, N line, and outputs ac power after being filtered by the filter circuit.
The current conversion circuit is used for receiving alternating current output by the alternating current power supply circuit and converting the alternating current into high-voltage direct current so as to supply power to a high-voltage direct current load of the air conditioner. Specifically, the high-voltage dc load includes, for example: a filter rectification circuit, a PFC circuit, a fan, a press inverter circuit and other direct current strong current circuits.
Step S2: when the air conditioner is started, the alternating current power supply circuit is controlled to output alternating current to the current conversion circuit, so that the current conversion circuit converts the alternating current into high-voltage direct current to supply power to the high-voltage direct current load.
That is, during standby, the current conversion circuit cannot receive the alternating current from the alternating current power supply, so that high-voltage direct current cannot be output, that is, power cannot be supplied to a high-voltage direct current load of the air conditioner, so that the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; when the air conditioner is started, the current conversion circuit receives alternating current from the alternating current power supply and converts the alternating current into high-voltage direct current so as to supply power to a high-voltage direct current load of the air conditioner and electrify the high-voltage direct current load to work, so that the air conditioner is started and operated normally.
In one embodiment of the present invention, the steps S1 and S2 may be implemented by being executed by a power-on control circuit. Specifically, the power-on control circuit includes, for example: the relay system comprises a first relay, a second relay and a control unit.
The first end of the first relay is connected with the output end of the alternating current power supply circuit, the second end of the first relay is connected with the current conversion circuit, and the control end of the first relay is connected with the first low-voltage power supply. The first low voltage power supply may output a voltage of 12V, for example.
The first end of the second relay is connected with the output end of the alternating current power supply circuit, the second end of the second relay is connected with the current conversion circuit through the PTC thermistor of the air conditioner, and the control end of the second relay is connected with the second low-voltage power supply. The second low voltage power supply may output a voltage of 12V, for example.
The control unit is respectively connected with the first low-voltage power supply and the second low-voltage power supply and used for controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay and controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay when the air conditioner is in a standby state, so that the alternating current power supply circuit does not output alternating current to the current conversion circuit. Furthermore, the current conversion circuit cannot receive alternating current from an alternating current power supply, so that high-voltage direct current cannot be output, namely, power cannot be supplied to a high-voltage direct current load of the air conditioner, the high-voltage direct current load cannot generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced.
In one embodiment of the invention, the method further comprises: when the air conditioner is started, the second low-voltage power supply is controlled to supply power to the control end of the second relay, so that the first relay is attracted, and after the second relay is attracted for a first preset time, the first low-voltage power supply is controlled to supply power to the control end of the first relay, so that the first relay is attracted, and therefore the alternating current power supply circuit outputs alternating current to the current conversion circuit. Furthermore, the current conversion circuit receives alternating current from an alternating current power supply, converts the alternating current into high-voltage direct current to supply power to a high-voltage direct current load of the air conditioner, and the high-voltage direct current load is electrified to work, so that the air conditioner is started normally to operate. The first preset time is a preset empirical value, and in a specific embodiment, the first preset time is, for example, 3 seconds.
Specifically, a first relay for controlling the PTC is added in the whole ac power supply circuit, so that the PTC thermistor is not directly energized, but is energized and controlled by the first relay. When the air conditioner is in a standby state, the first relay is not attracted, so that the electrolytic capacitor in the current conversion circuit cannot be charged. On the other hand, the first relay is attracted again after the first preset time after the second relay is attracted on the control time sequence, so that the first relay is not attracted during standby. Thus, the output of the ac L, N line cannot power the circuits connected to the rear when the air conditioner is on standby. Namely, when the air conditioner is in a standby state, the alternating current power supply circuit cannot supply power to the current conversion circuit, so that the current conversion circuit cannot supply high-voltage direct current to the high-voltage direct current load, the high-voltage direct current load does not work, and the standby power consumption of the air conditioner is reduced.
In one embodiment of the invention, the method further comprises: and after the first relay is attracted for a second preset time, controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected. Namely, the air conditioner is started after the first relay and the first relay are attracted, and the second relay is controlled to be disconnected after the second preset time lasts. The second preset time is a preset empirical value, and in a specific embodiment, the second preset time is, for example, 500 milliseconds.
Specifically, when the air conditioner is powered on and standby, the control unit controls the second relay and the first relay to be in an off state. When the air conditioner is started, the second relay is firstly attracted, the electrolytic capacitor is charged through the PTC, the first relay is attracted after the first preset time (such as 3s) is charged, the second relay is disconnected after the second preset time (such as 500ms) is delayed, and starting commands can be sent to the compressor, the outdoor fan and the like after the charging process is completed, so that the standby power consumption of the air conditioner can be reduced, and the normal starting of the air conditioner can also be realized. This process is the PTC power-on sequence.
In one embodiment of the invention, the method further comprises: and when the air conditioner is not restarted within a third preset time after being turned off, controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay, and controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay so that the alternating-current power supply circuit does not output alternating current to the current conversion circuit. The third predetermined time is a predetermined empirical value, and in a specific embodiment, the third predetermined time is, for example, 3 minutes.
Specifically, if the air conditioner is not restarted within a third preset time after the air conditioner is turned off, the user is considered to have no intention of restarting the air conditioner temporarily, that is, the air conditioner is considered to be in a standby state, and the air conditioner is not started to operate temporarily, then the first low-voltage power supply is controlled not to supply power to the control end of the first relay, so that the first relay is turned off, the second low-voltage power supply is controlled not to supply power to the control end of the second relay, the second relay is turned off, so that the alternating-current power supply circuit does not output alternating current to the current conversion circuit, and the standby power consumption of the air conditioner is reduced.
In a specific example, for example, when the start-up command is not received again within a third preset time (e.g., 3min) after the air conditioner is turned off, the user is considered not to use the air conditioner for a while, and the control unit controls to turn off the first relay and the second relay. Further, if the air conditioner has a starting command within the timing time (such as 3min), timing is cancelled, and the actions of disconnecting the first relay and the second relay are closed, namely the first relay and the second relay are kept closed. If the air conditioner is in a standby state, that is, the PTC control is in a power-off state, when there is a power-on start command, the above-mentioned PTC power-on sequence action is repeated, which is not described herein again.
Further, when the air conditioner reaches the preset temperature and is shut down, at this moment, the temperature control shutdown control part can consider that the air conditioner is in the running state, and possibly restarts the compressor and the fan at any time along with the temperature change, so the power-off control of the first relay and the second relay is not carried out, namely, the direct-current high-voltage load is electrified to run, and at this moment, no low standby control exists.
In one embodiment of the invention, the method further comprises: the switching power supply circuit is connected with the alternating current power supply circuit, so that the switching power supply circuit outputs low-voltage direct current according to alternating current provided by the switching power supply circuit to supply power to a low-voltage direct current load of the air conditioner. That is to say, the switching power supply circuit is directly connected with the alternating current power supply circuit to realize independent power supply, so that no matter in a standby state or a starting operation state, the switching power supply circuit is always electrified, alternating current output by the alternating current power supply circuit can be converted into low-voltage direct current to supply power to a low-voltage direct current load of the air conditioner, and the low-voltage direct current load is enabled to be normally electrified and operated. The low-voltage dc load includes, for example, a chip, a periphery, a sensor, a current/voltage detection circuit, a protection circuit, a relay control circuit, and other weak current circuits.
Specifically, the switching power supply circuit includes, for example: the circuit comprises an alternating current receiving sub-circuit, a rectifier sub-circuit and a direct current output sub-circuit.
The alternating current receiving sub-circuit is connected with the alternating current power supply circuit and used for receiving alternating current; the rectifier sub-circuit is used for rectifying and filtering the alternating current; the direct current output sub-circuit is used for converting the alternating current after rectification and filtering into low-voltage direct current and outputting the low-voltage direct current. The low-voltage direct current comprises a plurality of low-voltage direct currents with different voltages, namely, the direct current output sub-circuit can output a plurality of control power supplies with different voltages, such as 5V, 12V, 15V and the like, so that the power supply requirements of different low-voltage direct current loads are met, and the normal standby and working states of the air conditioner are not influenced.
It should be noted that the specific implementation manner of the control method of the air conditioner in the embodiment of the present invention is similar to the specific implementation manner of the control system of the air conditioner in the embodiment of the present invention, and please refer to the description of the system part specifically, and details are not described here again in order to reduce redundancy.
According to the control method of the air conditioner, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected when the air conditioner is in the standby state, power supply to the high-voltage direct current load is stopped, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
A further embodiment of the present invention also provides a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements a control method of the air conditioner as described in any one of the above-described embodiments of the present invention.
According to the computer-readable storage medium provided by the embodiment of the invention, when the air conditioner is in a standby state, the alternating current power supply circuit is controlled not to output alternating current to the current conversion circuit, so that the direct current strong current circuit can be disconnected and the power supply to the high-voltage direct current load is stopped when the air conditioner is in the standby state, the high-voltage direct current load does not generate standby power consumption, and the standby power consumption of the air conditioner is effectively reduced; and when the air conditioner is started, controlling the alternating current power supply circuit to output alternating current to the current conversion circuit so as to normally start and operate the air conditioner.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "a plurality" means two or more.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. An air conditioner control system, comprising:
an alternating current power supply circuit for supplying alternating current;
the current conversion circuit is used for receiving the alternating current and converting the alternating current into high-voltage direct current so as to supply power to a high-voltage direct current load of the air conditioner;
the power-on control circuit is respectively connected with the alternating current power supply circuit and the current conversion circuit and is used for controlling the alternating current power supply circuit not to output the alternating current to the current conversion circuit when the air conditioner is in a standby state and controlling the alternating current power supply circuit to output the alternating current to the current conversion circuit when the air conditioner is started.
2. The air conditioner control system according to claim 1, wherein said power-on control circuit comprises:
the first end of the first relay is connected with the output end of the alternating current power supply circuit, the second end of the first relay is connected with the current conversion circuit, and the control end of the first relay is connected with a first low-voltage power supply;
the first end of the second relay is connected with the output end of the alternating current power supply circuit, the second end of the second relay is connected with the current conversion circuit through a PTC thermistor of the air conditioner, and the control end of the second relay is connected with a second low-voltage power supply;
and the control unit is respectively connected with the first low-voltage power supply and the second low-voltage power supply and used for controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay and controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay so as to enable the alternating-current power supply circuit not to output the alternating current to the current conversion circuit when the air conditioner is in standby.
3. The air conditioner control system according to claim 2, wherein said control unit is further configured to: when the air conditioner starts, control the second low voltage power supply to the control end power supply of second relay makes first relay actuation, and second relay actuation is first predetermineeing the time after, control first low voltage power supply to the control end power supply of first relay makes first relay actuation, so that alternating current power supply circuit way is to the current conversion circuit output the alternating current.
4. The air conditioner control system according to claim 3, wherein said control unit is further configured to:
and after the first relay is attracted for a second preset time, controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected.
5. The air conditioner control system according to claim 4, wherein said control unit is further configured to:
and when the air conditioner is not restarted within a third preset time after being turned off, controlling the first low-voltage power supply not to supply power to the control end of the first relay, so that the first relay is disconnected, and controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected, and the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
6. The air conditioner control system according to claim 1, further comprising:
and the switching power supply circuit is connected with the alternating current power supply circuit and is used for outputting low-voltage direct current according to the alternating current provided by the switching power supply circuit so as to supply power to a low-voltage direct current load of the air conditioner.
7. The air conditioner control system according to claim 6, wherein said switching power supply circuit comprises:
the alternating current receiving sub-circuit is connected with the alternating current power supply circuit and used for receiving the alternating current;
the rectifier sub-circuit is used for rectifying and filtering the alternating current;
and the direct current output sub-circuit is used for converting the alternating current after rectification and filtering into the low-voltage direct current and outputting the low-voltage direct current.
8. An air conditioner characterized by comprising the air conditioner control system as set forth in any one of claims 1 to 7.
9. A control method of an air conditioner according to claim 9, comprising the steps of:
when the air conditioner is in a standby state, controlling the alternating current power supply circuit not to output alternating current to the current conversion circuit, and enabling the current conversion circuit not to supply power to a high-voltage direct current load of the air conditioner;
when the air conditioner is started, the alternating current power supply circuit is controlled to output the alternating current to the current conversion circuit, so that the current conversion circuit converts the alternating current into high-voltage direct current to supply power to the high-voltage direct current load.
10. The method of claim 9, wherein controlling the ac power supply circuit not to output ac power to the current converting circuit when the air conditioner is in a standby state comprises:
and controlling the first low-voltage power supply not to supply power to the control end of the first relay to disconnect the first relay, controlling the second low-voltage power supply not to supply power to the control end of the second relay to disconnect the second relay, so that the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
11. The method for controlling an air conditioner according to claim 10, wherein the controlling the ac power supply circuit to output the ac power to the current conversion circuit at the time of starting the air conditioner includes:
control the second low voltage power supply to the control end power supply of second relay makes first relay actuation, and after the first predetermined time of second relay actuation, control first low voltage power supply to the control end power supply of first relay makes first relay actuation, so that alternating current power supply circuit way is to the output of current conversion circuit the alternating current.
12. The control method of an air conditioner according to claim 11, further comprising:
and after the first relay is attracted for a second preset time, controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected.
13. The control method of an air conditioner according to claim 12, further comprising:
and when the air conditioner is not restarted within a third preset time after being turned off, controlling the first low-voltage power supply not to supply power to the control end of the first relay, so that the first relay is disconnected, and controlling the second low-voltage power supply not to supply power to the control end of the second relay, so that the second relay is disconnected, and the alternating current power supply circuit does not output the alternating current to the current conversion circuit.
14. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a control program of an air conditioner, which when executed by a processor, implements the control method of the air conditioner according to any one of claims 9 to 13.
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| CN202010751513.1A CN111928427A (en) | 2020-07-30 | 2020-07-30 | Air conditioner control system, air conditioner and control method thereof |
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| CN202010751513.1A CN111928427A (en) | 2020-07-30 | 2020-07-30 | Air conditioner control system, air conditioner and control method thereof |
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Application publication date: 20201113 |