CN114061124B - Control circuit, control method, equipment and storage medium of air conditioner outdoor unit - Google Patents

Control circuit, control method, equipment and storage medium of air conditioner outdoor unit Download PDF

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Publication number
CN114061124B
CN114061124B CN202111201650.9A CN202111201650A CN114061124B CN 114061124 B CN114061124 B CN 114061124B CN 202111201650 A CN202111201650 A CN 202111201650A CN 114061124 B CN114061124 B CN 114061124B
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China
Prior art keywords
relay
state
input end
unit
power input
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CN202111201650.9A
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Chinese (zh)
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CN114061124A (en
Inventor
马瑞达
白东培
周宏明
蔡希桐
罗琼
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GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology Co Ltd
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Priority to CN202111201650.9A priority Critical patent/CN114061124B/en
Publication of CN114061124A publication Critical patent/CN114061124A/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The embodiment of the application discloses a control method, which comprises the following steps: determining the working mode of the air conditioning equipment; determining a first state of a first relay and a second state of a second relay included in the air conditioner outdoor unit control circuit based on the operation mode; controlling a connection state of the first relay based on the first state; and controlling the connection state of the second relay based on the second state. The embodiment of the application also discloses an air conditioner outdoor unit control circuit, equipment and a storage medium.

Description

Control circuit, control method, equipment and storage medium of air conditioner outdoor unit
Technical Field
The present disclosure relates to the field of air conditioning technologies, and in particular, to an air conditioner outdoor unit control circuit, a control method, a device, and a storage medium.
Background
At present, air conditioning equipment has a function of heating or refrigerating according to the needs of users, and is widely installed and applied in various application scenes. With the wide application of air conditioning equipment, the requirements of users on the air conditioning equipment are also increasing. In various environments such as home and work, there are more and more installed air conditioning apparatuses, and miniaturization of the air conditioning apparatuses to reduce the space occupied by the air conditioning apparatuses has become a trend. In the current miniaturized design process of air conditioning equipment, the method is particularly important for miniaturized design of indoor machine electric control circuits. At present, the common technical scheme in the process of miniaturized design of the indoor machine control circuit mainly comprises the following steps: selecting smaller components to package and/or optimizing circuit reduction components, etc.
However, when the above-mentioned common technical scheme adopts components with smaller package, the production cost is increased, and the optimization circuit reduces the components to cause the reliability of the indoor unit control circuit to be lower, so that there is no scheme for effectively improving the indoor unit control circuit to improve the miniaturized design of the air conditioning equipment at present.
Content of the application
In order to solve the above technical problems, the embodiments of the present application expect to provide an air conditioner outdoor unit control circuit, a control method, a device and a storage medium, which solve the problem that there is no effective improvement on an indoor unit control circuit to improve the solution for implementing the miniaturized design of an air conditioner, and propose an air conditioner outdoor unit control circuit capable of controlling an indoor unit, thereby reducing the space occupied by the indoor unit control circuit and further implementing the miniaturization of the air conditioner.
The technical scheme of the application is realized as follows:
in a first aspect, an air conditioner outdoor unit control circuit includes: the outdoor unit comprises a first relay, a thermistor, a second relay, a first rectifying unit, a rectifying bridge, a circuit protection unit, a second rectifying unit, a switching power supply module and an outdoor unit controller; wherein:
the power input end of the first relay is connected with a first external power input end, and the power output end of the first relay is connected with the first power input end of the rectifier bridge;
the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, and the power output end of the thermistor is also connected with the power input end of the first rectifying unit;
the power output end of the second relay is connected with the first power input end of the rectifier bridge;
the power output end of the first rectifying unit is connected with the power input end of the switching power supply module;
the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, and the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit;
the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit;
the power input end of the second rectifying unit is grounded, and the power output end of the second rectifying unit is connected with the power input end of the switching power supply module;
the power output end of the switch power supply module is connected with the power input end of the outdoor unit controller;
the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit.
In a second aspect, a control method applied to an air conditioning apparatus including the air conditioning outdoor unit control circuit according to any one of the preceding claims and an air conditioning indoor unit control circuit not including a relay, the method comprising:
determining the working mode of the air conditioning equipment;
determining a first state of a first relay and a second state of a second relay included in the air conditioner outdoor unit control circuit based on the operation mode;
controlling a connection state of the first relay based on the first state;
and controlling the connection state of the second relay based on the second state.
In a third aspect, an air conditioning apparatus includes: the air conditioner outdoor unit control circuit, the air conditioner indoor unit control circuit excluding the relay, the indoor unit and the outdoor unit according to any one of the preceding claims; wherein:
the air conditioner outdoor unit control circuit is arranged in the outdoor unit and is used for realizing the control method according to any one of the above to control the work of the outdoor unit;
the indoor unit control circuit of the air conditioner is arranged in the indoor unit and used for controlling the indoor unit to work and is in communication connection with the outdoor unit control circuit of the air conditioner, so that the indoor unit and the outdoor unit work cooperatively to realize an air conditioning function.
In a third aspect, a storage medium has stored thereon a control program which, when executed by a processor, implements the steps of the control method according to any of the preceding claims.
In the embodiment of the application, the power input end of the first relay is connected with the first external power input end, the power output end of the first relay is connected with the first power input end of the rectifier bridge, the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, the power output end of the thermistor is also connected with the power input end of the first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of the switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifier unit, the power input end of the second rectifier unit is grounded, the power output end of the second rectifier unit is connected with the power input end of the switch power module, the power output end of the switch power module is connected with the power input end of the outdoor unit controller, the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, thus, by arranging two relays on the air conditioner outdoor unit control circuit, the relays which are arranged on the air conditioner indoor unit control circuit and used for controlling the energy consumption of the air conditioner are replaced, the indoor unit control circuit of the air conditioner effectively reduces the space occupied by the relay in the indoor unit control circuit of the air conditioner, solves the problem that the indoor unit control circuit is not effectively improved at present to improve the scheme for realizing the miniaturized design of the air conditioner, and provides the outdoor unit control circuit of the air conditioner, which can control the indoor unit, thereby reducing the space occupied by the indoor unit control circuit and further realizing the miniaturization of the air conditioner.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner outdoor unit control circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another control circuit of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart of a control method according to an embodiment of the present application;
fig. 4 is a second schematic flow chart of the control method provided in the embodiment of the present application;
fig. 5 is a flowchart of a control method according to an embodiment of the present application;
fig. 6 is a control circuit diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;
fig. 7 is a flow chart diagram of a control method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides an air conditioner outdoor unit control circuit, referring to fig. 1, the circuit includes: a first relay 101, a thermistor 102, a second relay 103, a first rectifying unit 104, a rectifying bridge 105, a circuit protection unit 106, a second rectifying unit 107, a switching power supply module 108, and an outdoor unit controller 109; wherein:
the power input end of the first relay 101 is connected with a first external power input end, and the power output end of the first relay 101 is connected with a first power input end of the rectifier bridge 105;
the power input end of the thermistor 102 is connected with the first external power input end 21, the power output end of the thermistor 102 is connected with the power input end of the second relay 103, and the power output end of the thermistor 102 is also connected with the power input end of the first rectifying unit 104;
the first external power input terminal may be a power input terminal of a commercial alternating current, for example, a zero line input terminal of the commercial alternating current, and the thermistor may be a semiconductor material or a component (Positive Temperature Coefficient, PTC) with a very high positive temperature coefficient. The thermistor has the function of avoiding the damage to the modules following the thermistor caused by the sudden increase of the input current.
The power output end of the second relay 103 is connected with the first power input end of the rectifier bridge 105;
the power output end of the first rectifying unit 104 is connected with the power input end of the switching power supply module 108;
wherein the first rectifying unit may be a diode element.
The second power input end of the rectifier bridge 105 is connected with the second external power input end 22, the direct current positive output end of the rectifier bridge 105 is connected with the power input end of the circuit protection unit 106, and the direct current negative output end of the rectifier bridge 105 is connected with the power output end of the circuit protection unit 106;
the second external power input may be a different power input from the first external power input in the ac mains power, for example, a live power input in the ac mains power. The circuit protection unit can be used for protecting a circuit to prevent components in the control circuit of the air conditioner outdoor unit such as a rectifier bridge and the like from being damaged due to larger electric current at the moment of closing the relay.
The power input end of the circuit protection unit 106 is connected with the power input end of the second rectifying unit 107;
the second rectifying unit may be a diode component.
The power input end of the second rectifying unit 107 is grounded, and the power output end of the second rectifying unit 107 is connected with the power input end of the switching power supply module 108;
the power output end of the switch power supply module 108 is connected with the power input end of the outdoor unit controller 109;
the signal input terminal of the outdoor unit controller 109 is also connected to the signal output terminal of the corresponding indoor unit control circuit 3.
Wherein, the outdoor unit controller may be a micro control unit (Microcontroller Unit; MCU). The indoor unit control circuit is a control circuit for controlling the operation of the indoor unit of the air conditioner, and can be in communication connection with third party control equipment such as remote control equipment of the air conditioner, an intelligent mobile terminal, an intelligent central control platform and the like so as to receive control instructions of users, and can also be used for receiving or processing control instructions sent by physical keys arranged on the indoor unit of the air conditioner or corresponding virtual buttons on a corresponding display screen, and corresponding response processing is performed. The indoor unit control circuit does not comprise relay equipment, so that the volume of the indoor unit control circuit of the indoor unit can be obviously reduced, and the miniaturization design of the indoor unit is facilitated.
In the embodiment of the application, the power input end of the first relay is connected with the first external power input end, the power output end of the first relay is connected with the first power input end of the rectifier bridge, the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, the power output end of the thermistor is also connected with the power input end of the first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of the switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit, the power input end of the second rectifying unit is grounded, the power output end of the second rectifying unit is connected with the power input end of the switch power module, the power output end of the switch power module is connected with the power input end of the outdoor unit controller, the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, thus, by arranging two relays on the air conditioner outdoor unit control circuit, the relay for controlling the energy consumption of the air conditioner arranged on the air conditioner indoor unit control circuit is replaced, the space occupied by the relay in the air conditioner indoor unit control circuit is effectively reduced, the problem that the indoor unit control circuit is not effectively improved to improve the scheme for realizing the miniaturized design of the air conditioner is solved, the air conditioner outdoor unit control circuit can control the indoor unit, so that the occupied space of the indoor unit control circuit is reduced, and the miniaturization of air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal command sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, in other embodiments of the present application, if the outdoor unit controller receives a first control signal sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in a first target mode, the outdoor unit controller controls the first relay to be in an off state and controls the second relay to be in an on state, so that the circuit protection unit is in a charging state;
the circuit protection unit may be a large capacitor, for example, a polar capacitor. The first target mode may be a mode in which the indoor unit control circuit controls the air conditioning equipment to operate, that is, an operation mode of the indoor unit control circuit corresponding to when the air conditioning equipment is at least in a cooling mode or a heating mode, after receiving the first control signal, the outdoor unit controller controls the first relay to be in an off state, and controls the second relay to be in an on state, when the working current provided by the commercial alternating current can pass through the thermistor, the circuit protection unit performs charging operation.
If the outdoor unit controller receives a second control signal sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in a second target mode, the outdoor unit controller controls the first relay to be in an off state and controls the second relay to be in an off state.
Wherein the second target mode includes at least one of the following modes: sleep mode or shutdown mode.
In this embodiment of the present application, after the indoor unit control circuit and the air conditioner outdoor unit control circuit are connected to an external power source, i.e. powered on, the indoor unit control circuit is in a sleep mode when the indoor unit control circuit does not receive any control instruction for controlling the operation of the indoor unit control circuit, for example, a cooling or heating instruction, and at this time, the indoor unit control circuit does not send any signal to the air conditioner outdoor unit control circuit, at this time, the corresponding second control signal is an empty signal, and the air conditioner outdoor unit control circuit controls the first relay and the second relay to be in an off state. Or when the indoor unit control circuit receives a control instruction for controlling the indoor unit circuit to shut down, the corresponding second control signal is a shutdown signal, at the moment, the air conditioning equipment enters a shutdown mode, and the air conditioning outdoor unit control circuit controls the first relay and the second relay to be in a disconnected state. Like this, when air condensing units control circuit control first relay and second relay all are in the off-state, make the commercial alternating current pass through thermistor, pass through first rectifier unit transmission to switching power supply module, make switching power supply module change commercial alternating current into low voltage power supply for example 5 volts (V) to for the off-premises station controller provides working power supply, like this, other power consumption modules that are connected with first relay and second relay do not work, can effectively practice thrift the consumption of power supply.
Based on the foregoing embodiment, in other embodiments of the present application, when the outdoor unit controller receives the first control signal and the first relay is in the off state and the second relay is in the on state, if the outdoor unit controller detects that the charge power of the circuit protection unit reaches the preset power, the first relay is controlled to be in the on state and the second relay is controlled to be in the off state.
In this embodiment of the present application, the preset electric quantity may refer to a maximum electric quantity capacity of the circuit protection unit, that is, after working current provided by an off-line ac power may be passed through the thermistor, the circuit protection unit is made to perform charging operation, until the outdoor unit controller detects that the circuit protection unit is fully charged, the first relay is controlled to be in a conducting state, and the second relay is controlled to be in a disconnecting state, so as to perform short-circuit treatment on the thermistor, increase current flowing into a subsequent working module, and make the subsequent working module quickly enter into a normal working state, where working current of the outdoor unit controller is provided by the second rectifying unit connected with the switching power supply module.
Based on the foregoing embodiment, referring to fig. 2, the circuit further includes: a power factor correction unit 110; wherein:
the first power input end of the power factor correction unit 110 is connected with the direct current positive output end of the rectifier bridge 105, the second power input end of the power factor correction unit 110 is connected with the direct current negative output end of the rectifier bridge 105, the first power output end of the power factor correction unit 110 is connected with the power input end of the circuit protection unit 106, and the second power output end of the power factor correction unit 110 is connected with the power output end of the circuit protection unit 106, so that the power factor correction unit is arranged between the rectifier bridge and the circuit protection unit.
Wherein the power factor correction (Power Factor Correction, PFC) unit is for performing power factor correction.
Based on the foregoing embodiments, in other embodiments of the present application, referring to fig. 2, the circuit further includes: a smart power module 111; wherein:
the power control terminal of the intelligent power module 111 is connected to the power input terminal of the second rectifying unit 107.
The intelligent power module (Intelligent Power Module, IPM) is internally provided with a driving and protecting circuit, so that the control circuit of the air conditioner outdoor unit is simple and reliable, the system development time is effectively shortened, the self-protection capability of the control circuit of the air conditioner outdoor unit under faults is improved, other chips in the control circuit of the air conditioner outdoor unit are effectively ensured, and the possibility of damage of other chips is reduced.
Based on the foregoing embodiments, in other embodiments of the present application, referring to fig. 2, the circuit further includes: a current loop 112; wherein:
the current loop 112 is disposed between the signal input terminal of the outdoor unit controller 109 and the signal output terminal of the indoor unit control circuit 3.
In the embodiment of the application, the current loop is used for ensuring the signal quality of the transmission signal between the indoor unit control circuit and the outdoor unit controller and reducing noise interference in the signal transmission process.
Based on the foregoing embodiments, in other embodiments of the present application, referring to fig. 2, the circuit further includes: an electromagnetic compatibility unit 113; wherein:
a first power input terminal of the electromagnetic compatibility unit 113 is connected to the first external power input terminal 21, a second power input terminal of the electromagnetic compatibility unit 113 is connected to the second external power input terminal 22, a first power output terminal of the electromagnetic compatibility unit 113 is connected to a first power input terminal of the rectifier bridge 105, and a second power output terminal of the electromagnetic compatibility unit 113 is connected to a power input terminal of the first relay 101.
In this embodiment of the present application, the electromagnetic compatibility unit is configured to improve an ability of the air conditioner outdoor unit control circuit to resist electromagnetic interference in a current environment, and reduce electromagnetic interference generated by the air conditioner outdoor unit control circuit.
It should be noted that, in this embodiment, the descriptions of the same units and modules as those in other embodiments may be referred to the descriptions in other embodiments, and are not repeated here.
In the embodiment of the application, the power input end of the first relay is connected with the first external power input end, the power output end of the first relay is connected with the first power input end of the rectifier bridge, the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, the power output end of the thermistor is also connected with the power input end of the first rectifier unit, the power output end of the second relay is connected with the first power input end of the rectifier bridge, the power output end of the first rectifier unit is connected with the power input end of the switch power module, the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit, the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit, the power input end of the second rectifying unit is grounded, the power output end of the second rectifying unit is connected with the power input end of the switch power module, the power output end of the switch power module is connected with the power input end of the outdoor unit controller, the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit, thus, by arranging two relays on the air conditioner outdoor unit control circuit, the relay for controlling the energy consumption of the air conditioner arranged on the air conditioner indoor unit control circuit is replaced, the space occupied by the relay in the air conditioner indoor unit control circuit is effectively reduced, the problem that the indoor unit control circuit is not effectively improved to improve the scheme for realizing the miniaturized design of the air conditioner is solved, the air conditioner outdoor unit control circuit can control the indoor unit, so that the occupied space of the indoor unit control circuit is reduced, and the miniaturization of air conditioning equipment can be realized. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal command sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, an embodiment of the present application provides a control method, which is applied to an air conditioning apparatus including an air conditioning outdoor unit control circuit as shown in fig. 1 or fig. 2 and an air conditioning indoor unit control circuit not including a relay, and referring to fig. 3, the method includes the steps of:
step 401, determining an operation mode of the air conditioning equipment.
In this embodiment of the present application, the working mode of the air conditioning apparatus may be a shutdown mode, a sleep mode, or a working mode, and the working mode may at least include a cooling mode or a heating mode.
Step 402, determining a first state of a first relay and a second state of a second relay included in an air conditioner outdoor unit control circuit based on an operation mode.
In this application embodiment, under different operating modes, the first state of first relay and the second state of second relay are different, and the first state of first relay can be off-state or on-state, and when first relay is off-state, first relay will the passageway disconnection, and the current signal can not export through first relay this moment, and when first relay is on-state, first relay is equivalent to the wire, and current information can be transmitted to the module that first relay is connected from first relay this moment.
Step 403, controlling the connection state of the first relay based on the first state.
In this embodiment of the present application, when the current connection state of the first relay is the same as the current connection state of the first relay, the current connection state of the first relay is maintained, and when the current connection state of the first relay is different from the current connection state of the first relay, the first relay is controlled to switch the current connection state to the first state.
Step 404, controlling the connection state of the second relay based on the second state.
In this embodiment of the present application, when the second state is the same as the current connection state of the second relay, the current connection state of the second relay is maintained, and when the second state is different from the current connection state of the second relay, the second relay is controlled to switch the current connection state to the second state.
According to the embodiment of the application, the working mode of the air conditioning equipment is determined, the second states of the first relay, the first state and the second relay included in the control circuit of the air conditioning outdoor unit are determined based on the working mode, the connection state of the first relay is controlled based on the first state, and the connection state of the second relay is controlled based on the second state. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal command sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, the embodiments of the present application provide a control method, which is applied to an air conditioning apparatus including an air conditioning outdoor unit control circuit as shown in fig. 1 or fig. 2 and an air conditioning indoor unit control circuit not including a relay, and referring to fig. 4, the method includes the steps of:
step 501, determining an operating mode of the air conditioning equipment.
In this embodiment of the present application, the working mode of the air conditioning apparatus may be determined after the control circuit of the air conditioning indoor unit receives an operation instruction corresponding to a user. The operation instruction corresponding to the user may be obtained by the user operating a physical button provided on the air conditioning device, or may be obtained by the user operating a virtual button provided on a display screen provided on the air conditioning device, or may be obtained by the user operating a third party control device, for example, a remote control device, an intelligent mobile terminal device, or the like.
After the air conditioner executes step 501, steps 502, 504-505, or steps 503-505 may be selectively executed according to the operation mode, if the operation mode is the first target mode, steps 502, 504-505 may be selectively executed, and if the operation mode is the second target mode, steps 503-505 may be selectively executed.
Step 502, if the operation mode is the first target mode, determining that the first state of the first relay is an off state, and the second state of the second relay is an on state.
In the embodiment of the application, when the first state of the first relay is the off state and the second state of the second relay is the on state, the IPM module, the PFC module and the like in the air conditioner outdoor unit control circuit are connected to the circuits, so as to provide protection for the air conditioner outdoor unit control circuit and provide stable working voltage and current for the outdoor unit and the like.
Step 503, if the operation mode is the second target mode, determining that the first state of the first relay is the off state, and the second state of the second relay is the off state.
In the embodiment of the application, when the second target mode is adopted, the first state of the first relay is determined to be the off state, and the second state of the second relay is determined to be the off state, at this time, power consumption modules such as the IPM module, the PFC module and the like in the control circuit of the air conditioner outdoor unit are in the power-off state, and the work is stopped, so that the energy consumption of the air conditioner can be realized.
Step 504, based on the first state, controlling the connection state of the first relay.
Step 505, based on the second state, controlling the connection state of the second relay.
Based on the foregoing embodiments, in other embodiments of the present application, referring to fig. 5, when the air conditioner selectively executes steps 502 and 504 to 505, the air conditioner executes step 505 and then further executes steps 506 to 508:
step 506, when the working mode is the first target mode and the connection state of the first relay is the disconnection state, and the connection state of the second relay is the conduction state, if it is detected that the charge power of the circuit protection unit in the control circuit of the air conditioner outdoor unit reaches the preset power, it is determined that the third state of the first relay is the conduction state, and the fourth state of the second relay is the disconnection state.
Step 507, the connection state of the first relay is controlled to be switched to the on state.
Step 508, controlling the connection state of the second relay to switch to the disconnection state.
In this embodiment of the present application, the circuit protection unit may be a polar capacitor, and the preset electric quantity may be an empirical value obtained according to a large number of experiments, and in some cases, may generally be a maximum capacitance that may be stored in the polar capacitor. When the working mode is a first target mode, the connection state of the first relay is in a disconnection state, and the connection state of the second relay is in a conduction state, and when the charging electric quantity of the circuit protection unit in the control circuit of the air conditioner outdoor unit reaches the preset electric quantity, the first relay is switched to the conduction state, and when the connection state of the second relay is switched to the disconnection state, the thermistor is in short circuit, so that the current flowing into the PFC module is increased, the subsequent module connected with the PFC module is quickly brought into the normal working state, and the power supply path of the switching power supply module is provided by the second rectifying unit.
Based on the foregoing embodiments, the embodiments of the present application provide a connection schematic diagram of a specific control circuit of an outdoor unit of an air conditioner, and reference may be specifically made to fig. 6. One control method based on the control circuit of the air conditioner outdoor unit shown in fig. 6 may refer to fig. 7, and includes the following steps:
step 601, the MCU109 detects whether the current loop 112 transmits a control command, if the control command transmitted by the current loop is not received, step 602 is executed, otherwise, steps 603 to 605 or step 606 are executed.
The control instruction is sent to the MCU of the air conditioner outdoor unit control circuit by the indoor unit control circuit through the current loop.
Step 602, MCU109 controls relays RY1101 and RY2 103 to be in an off state.
The switching power supply module obtains current through a path formed by the PTC 102 and the freewheeling diode D3 107 and provides working current to the MCU. In general, relays RY1 and RY2 are normally in a default off state, and at this time, the MCU only needs not to control conduction of relays RY1 and RY2, so that operation of controlling both relays RY1 and RY2 in the off state can be achieved. At this time, the MCU may be in a sleep state, and perform a low power consumption operation mode.
In step 603, if it is determined that the control command is a command instructing the air conditioning apparatus to perform a cooling operation or a heating operation, MCU109 controls RY1101 to maintain an off state and controls RY2 to be in an on state.
Thus, RY1 is kept in an off state, and when RY2 is controlled to be conducted, current flows into the PFC circuit through the PTC, so that the PTC can prevent the sudden increase of the current from damaging the PFC circuit at the later stage, and the anti-impact effect is realized. At this time, the PFC circuit and the IPM module are supplied with power through PTC and RY2 paths.
In step 604, after the inductor and capacitor 106 of the PFC circuit 110 are fully charged, the MCU109 controls the RY1101 to be in an on state and controls the RY2 103 to be in an off state.
The time required for fully charging the inductance and the capacitance is short, and the inductance and the capacitance can be fully charged usually in a period of a few seconds. MCU109 controls RY1101 to be in an on state, and controls RY2 to be in an off state, when the power supply states of the PFC circuit and the IPM module are not changed and the power supply works normally, switching power supply module 108 is provided with a working power supply by freewheeling diode D3 107.
Step 605, the outdoor unit operates.
In step 606, if the control instruction indicates that the shutdown instruction is executed, MCU109 controls relays RY1101 and RY2 103 to be in an off state.
After the MCU performs step 606, step 601 is repeatedly performed.
It should be noted that, in this embodiment, the descriptions of the same steps and the same content as those in other embodiments may refer to the descriptions in other embodiments, and are not repeated here.
According to the embodiment of the application, the working mode of the air conditioning equipment is determined, the second states of the first relay, the first state and the second relay included in the control circuit of the air conditioning outdoor unit are determined based on the working mode, the connection state of the first relay is controlled based on the first state, and the connection state of the second relay is controlled based on the second state. In any case, the outdoor unit controller has a stable power supply to ensure that the outdoor unit controller responds to the signal command sent by the corresponding indoor unit control circuit at any time.
Based on the foregoing embodiments, embodiments of the present application provide an air conditioning apparatus, referring to fig. 8, the air conditioning apparatus 7 may include: an air conditioner outdoor unit control circuit 1 as in fig. 1 or 2, an air conditioner indoor unit control circuit 3 not including a relay, an indoor unit 71, and an outdoor unit 72; wherein:
the air conditioner outdoor unit control circuit 1 is disposed in the outdoor unit 72, and is used for implementing the control method implementation process provided in any of the above method embodiments as shown in fig. 3 to 5, which is not described herein again, so as to control the operation of the outdoor unit 72;
the indoor unit control circuit 3 is provided in the indoor unit 71, and is configured to control operation of the indoor unit 71, and to perform communication connection with the outdoor unit control circuit 1, so that the indoor unit 71 and the outdoor unit 72 cooperate to realize an air conditioning function.
Based on the foregoing embodiments, embodiments of the present application provide a computer readable storage medium, simply referred to as a storage medium, where one or more programs are stored, and the one or more programs may be executed by one or more processors, so as to implement a control method implementation procedure provided in the embodiments corresponding to fig. 3 to 5, which is not described herein again.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (10)

1. An air conditioner outdoor unit control circuit, characterized in that the circuit comprises: the outdoor unit comprises a first relay, a thermistor, a second relay, a first rectifying unit, a rectifying bridge, a circuit protection unit, a second rectifying unit, a switching power supply module and an outdoor unit controller; wherein:
the power input end of the first relay is connected with a first external power input end, and the power output end of the first relay is connected with the first power input end of the rectifier bridge;
the power input end of the thermistor is connected with the first external power input end, the power output end of the thermistor is connected with the power input end of the second relay, and the power output end of the thermistor is also connected with the power input end of the first rectifying unit; the thermistor is used for avoiding damage to a module connected behind the thermistor when the input current of the power supply suddenly increases; the thermistor is short-circuited when the first relay is conducted;
the power output end of the second relay is connected with the first power input end of the rectifier bridge;
the power output end of the first rectifying unit is connected with the power input end of the switching power supply module;
the second power input end of the rectifier bridge is connected with the second external power input end, the direct current positive output end of the rectifier bridge is connected with the power input end of the circuit protection unit, and the direct current negative output end of the rectifier bridge is connected with the power output end of the circuit protection unit;
the power input end of the circuit protection unit is connected with the power input end of the second rectifying unit;
the power input end of the second rectifying unit is grounded, and the power output end of the second rectifying unit is connected with the power input end of the switching power supply module;
the power output end of the switch power supply module is connected with the power input end of the outdoor unit controller; the commercial alternating current provides a working power supply for the outdoor unit controller through the thermistor, the first rectifying unit and the switching power supply module which are connected in sequence;
the signal input end of the outdoor unit controller is also connected with the signal output end of the corresponding indoor unit control circuit;
if the outdoor unit controller receives a first control signal sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in a first target mode, the outdoor unit controller controls the first relay to be in a disconnection state and controls the second relay to be in a conduction state, so that the circuit protection unit is in a charging state;
if the outdoor unit controller receives a second control signal sent by the indoor unit control circuit and used for indicating that the indoor unit control circuit is in a second target mode, the outdoor unit controller controls the first relay to be in a disconnection state and controls the second relay to be in a disconnection state;
when the outdoor unit controller receives the first control signal and the first relay is in a disconnection state and the second relay is in a conduction state, if the outdoor unit controller detects that the charging electric quantity of the circuit protection unit reaches a preset electric quantity, the first relay is controlled to be in the conduction state and the second relay is controlled to be in the disconnection state;
the second target mode includes at least one of the following modes: sleep mode and shutdown mode.
2. The circuit of claim 1, wherein the circuit further comprises: a power factor correction unit; wherein:
the first power input end of the power factor correction unit is connected with the direct current positive output end of the rectifier bridge, the second power input end of the power factor correction unit is connected with the direct current negative output end of the rectifier bridge, the first power output end of the power factor correction unit is connected with the power input end of the circuit protection unit, and the second power output end of the power factor correction unit is connected with the power output end of the circuit protection unit, so that the power factor correction unit is arranged between the rectifier bridge and the circuit protection unit.
3. The circuit of claim 1, wherein the circuit further comprises: an intelligent power module; wherein:
and the power control end of the intelligent power module is connected with the power input end of the second rectifying unit.
4. The circuit of claim 1, wherein the circuit further comprises: a current loop; wherein:
the current loop is arranged between the signal input end of the outdoor unit controller and the signal output end of the indoor unit control circuit.
5. The circuit of claim 1, wherein the circuit further comprises: an electromagnetic compatibility unit; wherein:
the first power input end of the electromagnetic compatibility unit is connected with the first external power input end, the second power input end of the electromagnetic compatibility unit is connected with the second external power input end, the first power output end of the electromagnetic compatibility unit is connected with the first power input end of the rectifier bridge, and the second power output end of the electromagnetic compatibility unit is connected with the power input end of the first relay.
6. A control method, which is applied to an air conditioning apparatus including the air conditioning outdoor unit control circuit according to any one of claims 1 to 5 and an air conditioning indoor unit control circuit that does not include a relay, the method comprising:
determining the working mode of the air conditioning equipment;
determining a first state of a first relay and a second state of a second relay included in the air conditioner outdoor unit control circuit based on the operation mode;
controlling a connection state of the first relay based on the first state;
and controlling the connection state of the second relay based on the second state.
7. The method of claim 6, wherein determining the first state of the first relay and the second state of the second relay included in the air conditioner outdoor unit control circuit based on the operation mode comprises:
if the working mode is a first target mode, determining that a first state of the first relay is an off state and a second state of the second relay is an on state;
and if the working mode is a second target mode, determining that the first state of the first relay is an off state, and determining that the second state of the second relay is an off state.
8. The method of claim 7, wherein the method further comprises:
when the working mode is the first target mode, the connection state of the first relay is the disconnection state, and the connection state of the second relay is the conduction state, if the charging electric quantity of a circuit protection unit in the air conditioner outdoor unit control circuit is detected to reach the preset electric quantity, determining that the third state of the first relay is the conduction state, and the fourth state of the second relay is the disconnection state;
controlling the connection state of the first relay to be switched into the conducting state;
and controlling the connection state of the second relay to be switched into the disconnection state.
9. An air conditioning apparatus, characterized in that the air conditioning apparatus comprises: the air-conditioning outdoor unit control circuit, the air-conditioning indoor unit control circuit excluding the relay, the indoor unit, and the outdoor unit according to any one of claims 1 to 5; wherein:
the air conditioner outdoor unit control circuit is arranged in the outdoor unit and is used for realizing the control method according to any one of claims 6 to 8 so as to control the work of the outdoor unit;
the indoor unit control circuit of the air conditioner is arranged in the indoor unit and used for controlling the indoor unit to work and is in communication connection with the outdoor unit control circuit of the air conditioner, so that the indoor unit and the outdoor unit work cooperatively to realize an air conditioning function.
10. A storage medium having stored thereon a control program which, when executed by a processor, implements the steps of the control method according to any one of claims 6 to 8.
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