CN112290545B - Power supply control device and method and multi-split air conditioning system - Google Patents
Power supply control device and method and multi-split air conditioning system Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004378 air conditioning Methods 0.000 title claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims description 40
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 5
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- 238000010586 diagram Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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 a power supply control device and method and a multi-split air conditioning system. Wherein, this power supply control device includes: the adapter is respectively connected to the first power supply and the mains supply and used for controlling the first power supply to supply power under the condition that the mains supply is powered off; the adapter includes: the detection voltage output end is connected to the power supply detection module of the controller to indicate whether power is supplied by the first power supply or not; and the at least one power supply voltage output end is connected to a power supply control module of the controller. According to the invention, multiple voltages are output through the adapter, so that the load power supply requirement is met; through the detection voltage output end of the adapter and the power supply detection module of the controller, the controller can identify whether the power is supplied by the first power supply, so that corresponding processing under the power supply of the first power supply is performed. The original power supply circuit of the controller does not need to be changed, the strong current circuit does not need to be detected, the structure is simple, the power supply switching control during the power failure of the mains supply can be conveniently, intelligently and efficiently realized, and the normal operation of the system is maintained.
Description
Technical Field
The invention relates to the technical field of power supply control, in particular to a power supply control device and method and a multi-split air conditioning system.
Background
In the multi-split air conditioning system, when part of indoor units are powered off and off, the loads such as the electronic expansion valve and the like are out of control, so that the refrigeration system is not controlled and works abnormally.
At present, aiming at the problems, a backup power supply is generally used for additionally supplying power, the backup power supply is directly connected into a controller, an original power supply loop of the controller needs to be changed, and a strong current detection loop is needed to determine whether an indoor unit is disconnected with a mains supply power grid, so that the structure is complex, and the indoor unit is not intelligent enough and efficient.
Disclosure of Invention
The embodiment of the invention provides a power supply control device and method and a multi-split air conditioning system, and at least solves the problems that in the prior art, the power supply control structure is complex and not high in efficiency under the condition of mains supply outage.
In order to solve the above technical problem, an embodiment of the present invention provides a power supply control device, including: an adapter and a controller;
the adapter is respectively connected to a first power supply and a mains supply and is used for controlling the power supply of the first power supply under the condition that the mains supply is powered off;
the adapter includes:
the detection voltage output end is connected to a power supply detection module of the controller, and an output signal of the power supply detection module is used for indicating whether the first power supply supplies power or not;
and the power supply control module is connected to the controller and is used for correspondingly outputting at least one preset power supply voltage.
Optionally, the adapter includes: the power supply switching device is connected to a control module and a first power supply switching module;
the access control module is respectively connected to the first power supply and the mains supply and is used for controlling the first power supply to be accessed to the first power supply conversion module under the condition that the mains supply is powered off;
the input end of the first power supply conversion module is connected to the output end of the access control module, the first power supply conversion module comprises at least two output ends which are respectively and correspondingly connected to the detection voltage output end and at least one power supply voltage output end, and the first power supply conversion module is used for converting the voltage of the first power supply into preset detection voltage and preset at least one power supply voltage.
Optionally, the access control module includes: a switching unit and a driving unit;
the input end of the switching unit is connected to the first power supply, the output end of the switching unit is used as the output end of the access control module, and the input end of the switching unit is disconnected with the output end of the switching unit in a normal state;
the driving unit is connected to the mains supply and used for driving the input end of the switching unit to be connected with the output end of the switching unit under the condition that the mains supply is powered off.
Optionally, the first power conversion module includes: a switching power supply chip and a transformer;
the switching power supply chip is connected to the output end of the access control module;
the first input end of the transformer is connected to the output end of the access control module, the second input end of the transformer is connected to the switching power supply chip, and the transformer is provided with at least two output ends which are respectively and correspondingly connected to the detection voltage output end and the at least one power supply voltage output end.
Optionally, the first power conversion module further includes: the input ends of the at least two voltage stabilizing units are respectively connected to the at least two output ends of the transformer, and the output ends of the at least two voltage stabilizing units are respectively and correspondingly connected to the detection voltage output end and the at least one power supply voltage output end.
Optionally, the first power conversion module further includes: at least one diode is connected between at least one of the supply voltage outputs and the output of the corresponding transformer, respectively.
Optionally, the first power conversion module further includes: the input end of the rectifying unit is connected to the output end of the access control module, the first output end of the rectifying unit is connected to the first input end of the transformer, and the second output end of the rectifying unit is connected to the switching power supply chip.
Optionally, the controller includes: a main control chip;
the input end of the power supply detection module is connected to the detection voltage output end of the adapter, and the output end of the power supply detection module is connected to the main control chip;
the main control chip is used for controlling the load to be closed by using the power supply of the first power supply under the condition that the output signal of the power supply detection module indicates that the power is supplied by the first power supply, entering an off-line state and sending information entering the off-line state to the communication network.
Optionally, the power supply detection module is a voltage division circuit.
Optionally, the power supply control module includes: and the second power supply conversion module is connected to a specified power supply voltage output end and at least one load, and is used for converting the power supply voltage output by the specified power supply voltage output end into at least one preset voltage value and correspondingly supplying the at least one preset voltage value to the at least one load.
The embodiment of the invention also provides a multi-split air conditioning system which comprises an indoor unit, wherein the indoor unit comprises the power supply control device.
The embodiment of the invention also provides a power supply control method, which is realized based on the power supply control device of the embodiment of the invention and comprises the following steps: acquiring a power supply indicating signal according to the value of the detection voltage output end of the adapter; and if the power supply indication signal indicates that the first power supply supplies power, the load is controlled to be closed by using the power supply of the first power supply, and the off-line state is entered.
Optionally, after entering the offline state, the method further includes: and sending the information entering the offline state to a communication network.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the power supply control method according to the embodiments of the present invention.
By applying the technical scheme of the invention, the adapter is respectively connected to the first power supply and the commercial power supply, and the first power supply is controlled to supply power under the condition that the commercial power supply is powered off; multiple voltages are output through the adapter, and the load power supply requirement is met; through the detection voltage output end of the adapter and the power supply detection module of the controller, the controller can identify whether the power is supplied by the first power supply, so that corresponding processing under the power supply of the first power supply is performed. Through the adapter, need not change the original power supply circuit of controller, need not detect the forceful electric power return circuit, simple structure can make things convenient for the intelligent power supply switching control when realizing the commercial power outage high-efficiently, maintains entire system's normal operating, practices thrift the energy consumption.
Drawings
Fig. 1 is a first schematic structural diagram of a power supply control device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an access control module according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an adapter provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a power supply detection module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present embodiment provides a power supply control device, and referring to fig. 1, the power supply control device includes: an adapter 10 and a controller 20. The adapter 10 is connected to the first power supply 30 and the mains power supply 40, respectively, for controlling the power supplied by the first power supply 30 in case the mains power supply 40 is powered down. The commercial power supply is connected to a commercial power grid, and may be ac 220V. The first power source may be an ac or dc power source of a fixed voltage value, which may be set according to a voltage required by each load, and may be, for example, 24V ac. The first power supply and the mains supply are two mutually independent power supplies.
The adapter 10 includes:
the detection voltage output end 11 is connected to a power supply detection module 21 of the controller 20, and an output signal of the power supply detection module 21 is used for indicating whether power is supplied by a first power supply or not;
at least one supply voltage output terminal 12, connected to the supply control module 22 of the controller 20, for outputting a preset at least one supply voltage correspondingly.
By detecting the value output by the voltage output end, it can be determined whether the first power supply supplies power, so that the controller can perform corresponding processing, for example, turning off the load, and entering an offline state. The preset at least one supply voltage can be set by referring to the voltage required by each load, such as 12V, 8V and the like, and a numerical value with a simple proportional relation with the first power supply voltage value can be selected, so that the design is convenient. The power supply control module can directly supply the power supply voltage output by the power supply voltage output end to the load, or further convert the power supply voltage output by the power supply voltage output end to obtain a voltage value required by the load and supply the voltage value to the load.
In the power supply control device of the embodiment, the adapters are respectively connected to the first power supply and the mains supply, and the first power supply is controlled to supply power under the condition that the mains supply is powered off; multiple voltages are output through the adapter, and the load power supply requirement is met; through the detection voltage output end of the adapter and the power supply detection module of the controller, the controller can identify whether the power is supplied by the first power supply, so that corresponding processing under the power supply of the first power supply is performed. Through the adapter, need not change the original power supply circuit of controller, need not detect the forceful electric power return circuit, simple structure can make things convenient for the intelligent power supply switching control when realizing the commercial power outage high-efficiently, maintains entire system's normal operating, practices thrift the energy consumption.
Referring to fig. 2, the adaptor 10 may include: an access control module 13 and a first power conversion module 14. The access control module 13 is respectively connected to the first power supply 30 and the mains supply 40, and is configured to control the first power supply 30 to access the first power conversion module 14 when the mains supply 40 is powered off. An input end of the first power conversion module 14 is connected to an output end of the access control module 13, the first power conversion module 14 includes at least two output ends, which are respectively connected to the detection voltage output end 11 and the at least one power supply voltage output end 12, and the first power conversion module 14 is configured to convert a voltage of the first power supply 30 into a preset detection voltage and a preset at least one power supply voltage. The preset detection voltage can be set according to requirements, for example, 5V. The access control module can realize the access control of the first power supply, so that the first power supply is accessed to supply power under the condition of power failure of the mains supply; the first power supply conversion module can convert the first power supply to obtain required voltage so as to supply power to a corresponding load or realize power supply identification.
Specifically, the access control module 13 may include: a switching unit and a driving unit. The input end of the switching unit is connected to the first power supply, the output end of the switching unit is used as the output end of the access control module, and the input end of the switching unit is disconnected with the output end of the switching unit in a normal state. The driving unit is connected to a mains supply and used for driving the input end of the switching unit to be connected with the output end of the switching unit under the condition that the mains supply is powered off so as to connect the first power supply to the first power supply conversion module. The access control of the first power supply is realized through the driving of the mains supply, and the fact that the mains supply and the first power supply are not connected at the same time is guaranteed.
A specific implementation of the access control module 13 is described below with reference to fig. 3.
As shown in fig. 3, the commercial power is ac220V, and the first power is dc 24V. The access control module 13 comprises a relay, preferably a double pole double throw relay. The relay includes: a coil 131, a first armature 132, a second armature 133, a first contact a, a second contact B, a third contact C, a fourth contact D, a fifth contact E, and a sixth contact F. A first end of the coil 131 is connected to a first line of the mains supply 40 and a second end of the coil 131 is connected to a second line of the mains supply 40. The first contact a is connected to a first line of the first power supply 30 and the second contact B is connected to a second line of the first power supply 30. The third contact C and the fifth contact E are both suspended, i.e. not externally connected with any pin or signal. The fourth contact D is connected to the positive terminal of the input terminal of the first power conversion module 14, and the sixth contact F is connected to the negative terminal of the input terminal of the first power conversion module 14. The first armature 132 is used for controlling the first contact point a to be conducted with the third contact point C, or the first contact point a to be conducted with the fourth contact point D. The second armature 133 is used for controlling the second contact point B to be conducted with the fifth contact point E, or the second contact point B to be conducted with the sixth contact point F.
In fig. 3, when the ac220V is not present, the relay is closed in the direction 2 (i.e., the first armature 132 controls the first contact a to be conducted with the fourth contact D, and the second armature 133 controls the second contact B to be conducted with the sixth contact F), resulting in that 24V is connected to the first power conversion module; when the alternating current 220V is present, the relay is closed in the direction 1 (i.e., the first armature 132 controls the first contact a to be conducted with the third contact C, and the second armature 133 controls the second contact B to be conducted with the fifth contact E), resulting in the 24V being disconnected from the circuit. Through commercial power supply drive relay, can guarantee that commercial power supply and first power can not put through simultaneously, realize the access control of first power simply reliably.
Referring to fig. 4, the first power conversion module 14 includes: a switching power supply chip 141 and a transformer 142. The switching power supply chip 141 is connected to the output end of the access control module 13; a first input end of the transformer 142 is connected to the output end of the access control module 13, a second input end of the transformer 142 is connected to the switching power supply chip 141, and the transformer 142 has at least two output ends respectively connected to the detection voltage output end and the at least one supply voltage output end correspondingly. The power supply conversion is realized through the switching power supply chip and the transformer, the first power supply is converted to obtain at least one preset power supply voltage and detection voltage, the realization mode is simple, and a complex circuit structure cannot be introduced.
The first power conversion module 14 further includes: at least two voltage stabilizing units 143, wherein the input terminals of the at least two voltage stabilizing units 143 are respectively connected to the at least two output terminals of the transformer 142, and the output terminals of the at least two voltage stabilizing units 143 are respectively and correspondingly connected to the detection voltage output terminal 11 and the at least one supply voltage output terminal 12. The voltage stabilizing unit can avoid the fluctuation of the voltage value, output a stable power supply and be more beneficial to power supply control. In practical applications, the positions and the number of the voltage stabilizing units (such as voltage stabilizing blocks) can be set according to the actual output condition of the transformer.
The first power conversion module may further include: at least one diode 144 connected between at least one supply voltage output and the output of the corresponding transformer, respectively. By providing the diode, reverse power supply can be prevented. In practical application, the positions and the number of the diodes can be set according to the actual output condition of the transformer.
Considering that the first power may be ac power, the first power conversion module may further include: an input end of the rectifying unit 145 is connected to the output end of the access control module 13, a first output end of the rectifying unit 145 is connected to a first input end of the transformer 142, and a second output end of the rectifying unit 145 is connected to the switching power supply chip 141. The rectifier unit can convert the first AC power supply into DC power, so as to perform further transformation and other processes, thereby realizing stable voltage conversion and output.
Illustratively, referring to fig. 5, voltage conversion is realized by a switching power supply, a high-frequency transformer is connected after 24V rectification, and a switching power supply chip and a voltage stabilizing block are used for outputting DC12V, DC8V and DC 5V.
In this embodiment, if the commercial power supply is used for supplying power, the adapter does not output power, and therefore, the first power supply may also be referred to as adapter power supply.
Illustratively, the adapter is externally connected with two mutually independent power supplies of direct current 24V and alternating current 220V. The alternating current 220V is used as a control signal to drive the closing direction of the double-pole double-throw relay, when the alternating current 220V does not exist, the relay is closed towards the direction 2, the 24V is connected into the first power supply conversion module, and when the alternating current 220V exists, the relay is closed towards the direction 1, and the 24V is disconnected from the loop. When 24V is connected to the first power conversion module, the first power conversion module processes 24V and outputs three power supplies of direct current 12V, 8V and 5V, wherein 12V and 8V can be used as driving power supplies to supply power to related loads and need to provide power not less than 50W; the 5V is used as a control signal, and the controller detects high and low levels to know whether the adapter supplies power or not so as to realize power supply identification, thereby finishing the processing of the controller under the condition of power supply of the adapter.
The controller 20 may include: a main control chip 23. The input end of the power supply detection module 21 is connected to the detection voltage output end 11 of the adapter 10, and the output end of the power supply detection module 21 is connected to the main control chip 23. The main control chip is used for controlling the load to be closed by utilizing the power supply of the first power supply under the condition that the output signal of the power supply detection module indicates that the power is supplied by the first power supply, entering an offline state and sending information entering the offline state to the communication network.
Preferably, the power supply detection module is a voltage division circuit, as shown in fig. 6, M is an input terminal of the power supply detection module 21, N is an output terminal of the power supply detection module 21, and if a preset detection voltage (for example, DC5V) is input to the M terminal, the main control chip may detect a high level at the N terminal, thereby determining that the first power supply is currently supplied by the first power supply. And if the preset detection voltage is not input into the end M, the adapter is considered to have no output, and the power supply is determined not to be supplied by the first power supply. The specific value of the divider resistor can be set according to the working voltage of the main control chip.
The power supply control module 22 may include: and the second power supply conversion module is connected to the appointed power supply voltage output end and at least one load, and is used for converting the power supply voltage output by the appointed power supply voltage output end into at least one preset voltage value and correspondingly supplying the at least one preset voltage value to the at least one load. The voltage required by the load can thus be converted at the controller.
Illustratively, the controller and the adapter are connected to the same alternating current 220V power supply network, the adapter does not output under the condition that the alternating current 220V power supply exists, and the adapter outputs direct currents of 12V, 8V and 5V under the condition that the alternating current 220V power supply does not exist. The controller is in butt joint with the adapter, the direct current 12V output by the adapter is connected to the second power conversion module of the controller and converted into voltages of 12V, 5V, 3.3V and the like, the direct current 8V can be directly supplied to a corresponding load, and the direct current 5V is divided by the power supply detection module and is identified by the main control chip in a high-low level mode. When the main control chip detects a high level, the adapter is determined to supply power, adapter power supply control is executed, specifically, when the adapter supplies power, the adapter stops working according to a load with alternating current 220V as a power supply, and other loads are processed according to shutdown of the indoor unit, for example, an electronic expansion valve with direct current 12V as the power supply is turned off to zero, a lamp panel with direct current 12V as the power supply is turned off to display, and faults unrelated to the AC220V power supply in the indoor unit are detected normally, such as faults of each temperature sensing bulb, water full protection, CAN network faults and the like. And meanwhile, the controller sends the information that the controller is converted into the intelligent offline state to the communication network. When the adapter supplies power, the controller is responsible for processing the load stop work of alternating current 220V, the indoor unit part is connected to the refrigerating system in a shutdown state, and the electronic expansion valve is closed, so that the normal work of the refrigerating system is ensured, and the energy consumption is reduced.
The embodiment of the invention also provides a multi-split air conditioning system which comprises at least two indoor units, wherein each indoor unit comprises the power supply control device. Based on the power supply control device, the adapter is respectively connected to the first power supply and the commercial power supply, and the first power supply is controlled to supply power under the condition that the commercial power supply is powered off; multiple voltages are output through the adapter, and the load power supply requirement is met; through the detection voltage output end of the adapter and the power supply detection module of the controller, the controller can identify whether the power is supplied by the first power supply, so that corresponding processing under the power supply of the first power supply is performed. The indoor unit controller has the advantages that an original power supply loop of the indoor unit controller does not need to be changed, a strong current loop does not need to be detected, the structure is simple, power supply switching control during commercial power outage can be conveniently, intelligently and efficiently realized, the control of the electronic expansion valve is maintained, the normal operation of a refrigeration system is maintained, and the energy consumption is saved. Moreover, when the adapter is powered on, abstraction is that the controller is powered off (namely, offline), and the load on the controller is small.
Based on the same inventive concept, the embodiment further provides a power supply control method, which is implemented based on the power supply control device and comprises the following steps: acquiring a power supply indicating signal according to the value of the detection voltage output end of the adapter; and if the power supply indication signal indicates that the first power supply supplies power, the load is controlled to be closed by using the power supply of the first power supply, and the off-line state is entered.
Through the detection voltage output end of the adapter and the power supply detection module of the controller, the controller can identify whether the power is supplied by the first power supply, so that corresponding processing under the power supply of the first power supply is performed, the normal operation of the whole system is maintained, and the energy consumption is saved.
After entering the offline state, the method further comprises the following steps: and sending the information entering the offline state to a communication network, and informing other related equipment of the state of the information in time.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the power supply control method as described above.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
1. A power supply control device characterized by comprising: an adapter and a controller;
the adapter is respectively connected to a first power supply and a mains supply and is used for controlling the power supply of the first power supply under the condition that the mains supply is powered off;
the adapter includes:
the detection voltage output end is connected to a power supply detection module of the controller, and an output signal of the power supply detection module is used for indicating whether the first power supply supplies power or not;
the power supply control module is connected to the controller and used for outputting at least one preset power supply voltage correspondingly;
the adapter includes: the power supply switching device is connected to a control module and a first power supply switching module;
the access control module is respectively connected to the first power supply and the mains supply and is used for controlling the first power supply to be accessed to the first power supply conversion module under the condition that the mains supply is powered off;
the input end of the first power supply conversion module is connected to the output end of the access control module, the first power supply conversion module comprises at least two output ends which are respectively and correspondingly connected to the detection voltage output end and the at least one power supply voltage output end, and the first power supply conversion module is used for converting the voltage of the first power supply into preset detection voltage and at least one preset power supply voltage.
2. The power supply control device according to claim 1, wherein the access control module comprises: a switching unit and a driving unit;
the input end of the switching unit is connected to the first power supply, the output end of the switching unit is used as the output end of the access control module, and the input end of the switching unit is disconnected with the output end of the switching unit in a normal state;
the driving unit is connected to the mains supply and used for driving the input end of the switching unit to be connected with the output end of the switching unit under the condition that the mains supply is powered off.
3. The power supply control device of claim 1, wherein the first power conversion module comprises: a switching power supply chip and a transformer;
the switching power supply chip is connected to the output end of the access control module;
the first input end of the transformer is connected to the output end of the access control module, the second input end of the transformer is connected to the switching power supply chip, and the transformer is provided with at least two output ends which are respectively and correspondingly connected to the detection voltage output end and the at least one power supply voltage output end.
4. The power supply control device of claim 3, wherein the first power conversion module further comprises: the input ends of the at least two voltage stabilizing units are respectively connected to the at least two output ends of the transformer, and the output ends of the at least two voltage stabilizing units are respectively and correspondingly connected to the detection voltage output end and the at least one power supply voltage output end.
5. The power supply control device of claim 3, wherein the first power conversion module further comprises:
at least one diode is connected between at least one of the supply voltage outputs and the output of the corresponding transformer, respectively.
6. The power supply control device of claim 3, wherein the first power conversion module further comprises: the input end of the rectifying unit is connected to the output end of the access control module, the first output end of the rectifying unit is connected to the first input end of the transformer, and the second output end of the rectifying unit is connected to the switching power supply chip.
7. The power supply control device according to claim 1, wherein the controller includes: a main control chip;
the input end of the power supply detection module is connected to the detection voltage output end of the adapter, and the output end of the power supply detection module is connected to the main control chip;
the main control chip is used for controlling the load to be closed by using the power supply of the first power supply under the condition that the output signal of the power supply detection module indicates that the power is supplied by the first power supply, entering an off-line state and sending information entering the off-line state to the communication network.
8. The power supply control device according to claim 1, wherein the power supply detection module is a voltage division circuit.
9. The power supply control device according to claim 1, wherein the power supply control module includes:
and the second power supply conversion module is connected to a specified power supply voltage output end and at least one load, and is used for converting the power supply voltage output by the specified power supply voltage output end into at least one preset voltage value and correspondingly supplying the at least one preset voltage value to the at least one load.
10. A multi-split air conditioning system comprising an indoor unit, characterized in that the indoor unit comprises the power supply control device of any one of claims 1 to 9.
11. A power supply control method implemented based on the power supply control device according to any one of claims 1 to 9, the method comprising:
acquiring a power supply indicating signal according to the value of the detection voltage output end of the adapter;
and if the power supply indication signal indicates that the first power supply supplies power, the load is controlled to be closed by using the power supply of the first power supply, and the off-line state is entered.
12. The method of claim 11, after entering the offline state, further comprising: and sending the information entering the offline state to a communication network.
13. A computer-readable storage medium on which a computer program is stored, characterized in that the program realizes the power supply control method according to claim 11 or 12 when executed by a processor.
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| CN117977531B (en) * | 2024-03-29 | 2024-07-02 | 杭州径上科技有限公司 | Self-adaptive power supply device, system and method |
| CN117997144B (en) * | 2024-04-02 | 2024-06-07 | 珠海格力电器股份有限公司 | Main control drive integrated circuit, controller main board and air conditioning equipment |
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| AU2015311401B2 (en) * | 2014-09-01 | 2018-08-02 | Vertiv Tech Co., Ltd. | Power supply system and method |
| CN104539041B (en) * | 2014-12-09 | 2017-01-18 | 广东美的暖通设备有限公司 | VRF air conditioner system, back-up source device of indoor unit of VRF air conditioner system and control method |
| CN107166648B (en) * | 2017-05-22 | 2019-10-01 | 青岛海尔空调器有限总公司 | A kind of air conditioner supply self adaptation control device and air conditioner |
| CN206992780U (en) * | 2017-05-22 | 2018-02-09 | 青岛海尔空调器有限总公司 | A kind of air conditioner power supply switches anti-halt circuit and air conditioner |
| CN108709284A (en) * | 2018-04-08 | 2018-10-26 | 广东美的暖通设备有限公司 | The control method of indoor unit, air conditioner and indoor unit |
| CN111174391A (en) * | 2020-03-12 | 2020-05-19 | 珠海格力电器股份有限公司 | Emergency power supply protection device for indoor unit of multi-split system |
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