CN110940032B - Power module temperature detection control method and device, storage medium and air conditioner - Google Patents
Power module temperature detection control method and device, storage medium and air conditioner Download PDFInfo
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- CN110940032B CN110940032B CN201911134262.6A CN201911134262A CN110940032B CN 110940032 B CN110940032 B CN 110940032B CN 201911134262 A CN201911134262 A CN 201911134262A CN 110940032 B CN110940032 B CN 110940032B
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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Abstract
The invention provides a power module temperature detection control method, a device, a storage medium and an air conditioner, wherein the method comprises the following steps: detecting the module temperature of a power module of an air conditioner when the air conditioner is in heating operation; judging whether the module temperature of the power module meets a first preset condition or not; if the module temperature meets the first preset condition, detecting the ambient temperature of the environment where the air conditioner is located; and judging whether the air conditioner has a power module temperature detection fault or not according to whether the ambient temperature meets a second preset condition or not. The scheme provided by the invention can solve the problem of temperature detection fault of the false alarm module of the air conditioner when the air conditioner runs at low load in a low-temperature environment, and avoids the influence on the normal use of the air conditioner caused by the temperature detection fault of the false alarm module.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a power module temperature detection control method, a power module temperature detection control device, a storage medium and an air conditioner.
Background
The present inverter air conditioner widely adopts an intelligent power module to drive a compressor, and the problem of temperature rise of the power module always belongs to an industrial problem. Most power modules adopt a mode of a built-in NTC resistor for temperature detection, but the resistance of the NTC resistor in a low-temperature environment is very large, so that the accuracy of temperature rise detection of the power module by an air conditioner is very low, and the temperature rise of the power module at the moment cannot be accurately judged, so that a method for directly judging the temperature detection abnormality of the power module when the temperature of the power module is lower than a certain threshold value exists in the industry. However, when the air conditioner runs in a low-temperature environment and at a low load, the problem of temperature detection failure of the air conditioner false alarm module exists, and normal use of the air conditioner is influenced.
Disclosure of Invention
The main purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provide a method and a device for controlling the temperature detection of a power module, a storage medium and an air conditioner, so as to solve the problem that the air conditioner falsely reports the temperature detection failure of the module in the low-temperature environment in the prior art.
The invention provides a power module temperature detection control method on one hand, which comprises the following steps: detecting a module temperature of a power module of the air conditioner when the air conditioner is in heating operation; judging whether the module temperature of the power module meets a first preset condition or not; if the module temperature meets the first preset condition, detecting the ambient temperature of the environment where the air conditioner is located; and judging whether the air conditioner has a power module temperature detection fault or not according to whether the ambient temperature meets a second preset condition or not.
Optionally, the first preset condition includes: the continuous first preset time of the module temperature is less than a first preset temperature value; and/or, the second preset condition comprises: the continuous second preset time of the environment temperature is less than a second preset temperature value; judging whether the air conditioner has a power module temperature detection fault according to whether the environment temperature meets a second preset condition, comprising: and if the ambient temperature does not meet the second preset condition, determining that a power module temperature detection fault occurs in the air conditioner.
Optionally, the method further comprises: if the module temperature does not meet the first preset condition, judging whether the air conditioner has a power module detection fault according to whether the module temperature meets a third preset condition; wherein the third preset condition includes: and the continuous third preset time of the module temperature is greater than a third preset temperature value.
Optionally, after the air conditioner is operated for a fourth preset time, detecting a module temperature of a power module of the air conditioner.
Another aspect of the present invention provides a power module temperature detection control apparatus, including: the first detection unit is used for detecting the module temperature of a power module of the air conditioner when the air conditioner is in heating operation; the first judging unit is used for judging whether the module temperature of the power module detected by the first detecting module meets a first preset condition or not; the second detection unit is used for detecting the ambient temperature of the environment where the air conditioner is located if the first judgment unit judges that the module temperature meets the first preset condition; and the second judging unit is used for judging whether the air conditioner has a power module temperature detection fault according to whether the ambient temperature detected by the second detecting unit meets a second preset condition.
Optionally, the first preset condition includes: the continuous first preset time of the module temperature is less than a first preset temperature value; and/or, the second preset condition comprises: the continuous second preset time of the environment temperature is less than a second preset temperature value; the second judging unit, according to whether the ambient temperature meets a second preset condition, judges whether a power module temperature detection fault occurs in the air conditioner, and includes: and if the ambient temperature does not meet the second preset condition, determining that a power module temperature detection fault occurs in the air conditioner.
Optionally, the method further comprises: the third judging unit is used for judging whether the air conditioner has a power module detection fault according to whether the module temperature meets a third preset condition or not if the first judging unit judges that the module temperature does not meet the first preset condition; wherein the third preset condition includes: and the continuous third preset time of the module temperature is greater than a third preset temperature value.
Optionally, after the air conditioner is operated for a fourth preset time, detecting a module temperature of a power module of the air conditioner.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
Yet another aspect of the present invention provides an air conditioner comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of any of the methods described above when executing the program.
In another aspect, the invention provides an air conditioner, which includes any one of the power module temperature detection control devices.
According to the technical scheme of the invention, through detection and processing of the temperature of the power module and the ambient temperature, the temperature of the power module is detected firstly, when the temperature of the power module is lower than a certain threshold value, the ambient temperature is detected again, and if the ambient temperature is lower than the certain threshold value, the air conditioner operates normally. The temperature of the module is not detected in a low-temperature environment, the problem of temperature detection faults of the false alarm module is avoided, the problem of temperature detection faults of the false alarm module of the air conditioner when the air conditioner runs at a low load in the low-temperature environment is solved, and the influence on the normal use of the air conditioner caused by the temperature detection faults of the false alarm module is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a power module temperature detection control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a method for controlling temperature detection of a power module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a power module temperature detection control apparatus provided in the present invention;
fig. 4 is a schematic structural diagram of another embodiment of a power module temperature detection control device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 described above 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 invention provides a power module temperature detection control method. The method is used for detecting and controlling the temperature of the power module of the air conditioner. Optionally, the air conditioner has a module temperature detection circuit and an ambient temperature detection circuit, which are respectively configured to detect a module temperature of a power module of the air conditioner and an ambient temperature of an environment where the air conditioner is located. The temperature detection method may be implemented in a main controller of the air conditioner.
Fig. 1 is a schematic method diagram of an embodiment of a power module temperature detection control method provided by the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the temperature detection method includes at least step S110, step S120, step S130, and step S140.
Step S110, detecting the module temperature of the power module of the air conditioner when the air conditioner is in heating operation.
Specifically, after the air conditioner starts a heating operation mode to operate, a main controller of the air conditioner starts to continuously detect the module temperature of the power module through a module temperature detection circuit. Under the low temperature operating mode, the module temperature of power module is unanimous with ambient temperature when the air conditioner is standby, and if the air conditioner detects module temperature immediately after starting, module temperature detection mistake protection appears in the high possibility, therefore, preferably, after the air conditioner heats operation fourth preset time, detect the module temperature of the power module of air conditioner to avoid appearing module temperature detection mistake protection, for example, after the air conditioner heats operation N minutes, begin to detect the module temperature of power module.
Step S120, determining whether the module temperature of the power module satisfies a first preset condition.
The first preset condition may specifically include: and the continuous first preset time of the module temperature is less than a first preset temperature value. The first preset temperature can be determined by statistical analysis of test data obtained by experimental tests. In order to avoid deviation of module temperature detection, whether the module temperature is smaller than a first preset temperature value or not is judged continuously for a first preset time. The first preset time is different for different compressors and air conditioners with different cold energy sections. For example, the first preset time is M, the first preset temperature value is X ℃, and whether the module temperature of the power module is less than X ℃ for M seconds continuously is determined.
Step S130, if the module temperature meets the first preset condition, detecting an ambient temperature of an environment where the air conditioner is located.
For example, if the module temperature of the power module is less than X ℃ for M seconds, the main controller of the air conditioner detects the ambient temperature of the environment where the air conditioner is located through the ambient temperature detection circuit.
Step S140, judging whether the air conditioner has a power module temperature detection fault according to whether the environment temperature meets a second preset condition.
Specifically, if the ambient temperature does not satisfy the second preset condition, it is determined that a power module temperature detection fault occurs in the air conditioner. And if the ambient temperature meets the second preset condition, determining that the air conditioner has no temperature detection fault of the power module.
The second preset condition may specifically include: and the continuous second preset time of the environment temperature is less than a second preset temperature value. The ambient temperature detection has deviation or external interference, so whether the ambient temperature is smaller than a second preset temperature value or not is judged continuously for a second preset time, and misoperation of the air conditioner is prevented. The second preset time and the second preset temperature can be determined by statistical analysis of test data obtained through experimental tests, and the second preset time and the second preset temperature of different compressors and air conditioners in different cold energy sections are different. The second preset time may be the same as or different from the first preset time.
The second preset temperature value is a threshold value set according to experimental data, and when the ambient temperature is higher than the second preset temperature value, the module temperature is in the accurate detection range of the air conditioner when the air conditioner operates at the lowest load; when the ambient temperature is lower than the second preset temperature value, the module temperature is possibly too low, and the air conditioner directly judges the condition of the module temperature detection circuit fault, so that whether the condition is met or not is judged, the reliability of ambient temperature detection is ensured, and the occurrence of false alarm module temperature detection fault is avoided.
For example, whether the environmental temperature meets the condition that the continuous M seconds are less than Z ℃ is judged, and if the environmental temperature does not meet the condition that the continuous M seconds are less than Z ℃, the air conditioner is determined to be a power module temperature detection fault; and if the ambient temperature meets the condition that M seconds are less than Z ℃, detecting the fault of the unpowered module of the air conditioner. If the air conditioner is determined to be in the power module temperature detection fault, the air conditioner is shut down, the power module temperature detection fault is reported, and if the air conditioner is determined to be in the power module temperature detection fault, the air conditioner operates normally.
In the prior art, the detection of the temperature of the power module is to directly determine that the detection of the temperature of the power module is abnormal when the temperature of the detection module is lower than a certain threshold. However, under the low-temperature working condition, when the air conditioner runs at low load, the loss of the power module is low, so the temperature rise is low, and is possibly close to the ambient temperature, and if the temperature of the module is lower than the set threshold value at the moment, the air conditioner has the module temperature detection fault. However, the air conditioner is normally operated under the condition, the air conditioner is protected only due to the problem of detection precision, and the air conditioner is misinformed. According to the invention, the temperature of the module is detected firstly, when the temperature of the module is lower than a certain threshold value, the ambient temperature is detected, if the ambient temperature is lower than the certain threshold value, the detection fault of the power module can not be reported, and the air conditioner operates normally. The temperature of the module is not detected in a low-temperature environment, so that the problem of misinformation of the temperature detection fault of the module is avoided.
Further, the method further comprises: and if the module temperature does not meet the first preset condition, judging whether the air conditioner has a power module detection fault according to whether the module temperature meets a third preset condition.
Specifically, the third preset condition includes: and the continuous third preset time of the module temperature is greater than a third preset temperature value. If the module temperature does not meet the first preset condition, namely the module temperature does not meet the condition that the continuous first preset time is less than a first preset temperature value, judging whether the module temperature is continuously greater than a third preset temperature value for a third preset time. And if the module meets the condition that the continuous third preset time is greater than a third preset temperature value, determining that the air conditioner has a power module temperature detection fault. Optionally, the third preset time may be the same as or different from the first preset time.
For example, if the module temperature does not satisfy that M seconds are less than X ℃, continuously judging whether the module temperature continues for M seconds to be greater than Y ℃, and if the module temperature satisfies that M seconds is greater than Y ℃, determining that the air conditioner is a power module temperature detection fault. If the air conditioner is determined to be in the power module temperature detection fault, the air conditioner is shut down, and the power module temperature detection fault is reported. The module temperature detection has deviation or external interference, and the continuous judgment for a period of time (third preset time) is used for preventing the air conditioner from generating misoperation due to the interference. The judgment of whether the module temperature is higher than a certain temperature value (third preset temperature value) is to prevent the power module from being burnt out due to overhigh temperature rise of the module. When the module temperature is higher than a third preset temperature value, the air conditioner reports the module temperature detection fault, the air conditioner stops to process, and the power module is prevented from being damaged.
For clearly illustrating the technical solution of the present invention, the following describes an execution flow of the power module temperature detection control method provided by the present invention with a specific embodiment.
Fig. 2 is a schematic method diagram of a power module temperature detection method according to an embodiment of the present invention. The embodiment shown in fig. 2 includes steps S201 to S205.
Step S201, the air conditioner starts a heating operation mode.
Step S202, after the compressor runs for N minutes, the air conditioner main controller starts to sample the temperature of the power module through the module temperature detection circuit, and the subsequent main controller continuously detects the temperature of the module.
Step S203, the air conditioner judges the sampling value of the power module temperature, judges whether the power module temperature is less than X ℃ for M seconds continuously, if not, the step S204 is executed, and if yes, the step S205 is executed.
Step S204, judging whether the temperature of the power module is continuously greater than Y ℃ for M seconds, if not, normally operating the air conditioner, and simultaneously re-entering the step S202; if so, stopping the air conditioner, and reporting the temperature detection fault of the module.
S205, judging the sampling value of the environmental temperature by the air conditioner, judging whether the environmental temperature is less than Z ℃ for M seconds continuously, if not, stopping the air conditioner, and reporting a module temperature detection fault; if yes, the air conditioner operates normally, and the process re-enters step S202.
The invention also provides a temperature detection control device of the power module. The method is used for detecting and controlling the temperature of the power module of the air conditioner. Optionally, the air conditioner has a module temperature detection circuit and an ambient temperature detection circuit, which are respectively configured to detect a module temperature of a power module of the air conditioner and an ambient temperature of an environment where the air conditioner is located. The temperature detection means may be implemented in a main controller of the air conditioner.
Fig. 3 is a schematic structural diagram of an embodiment of a power module temperature detection control apparatus provided in the present invention. As shown in fig. 3, the temperature detection control apparatus 100 includes: a first detecting unit 110, a first judging unit 120, a second detecting unit 130, and a second judging unit 140.
The first detecting unit 110 is configured to detect a module temperature of a power module of an air conditioner during a heating operation of the air conditioner.
Specifically, after the air conditioner starts to operate in the heating operation mode, the first detection unit 110 starts to continuously detect the module temperature of the power module through the module temperature detection circuit. Because under the low temperature operating mode, the module temperature of power module is unanimous with ambient temperature when the air conditioner awaits the opportune moment, if the air conditioner starts the back and detects module temperature immediately, and module temperature detection mistake protection appears in the high possibility, consequently, preferably, first detecting element 110 is in the air conditioner heats after the operation fourth preset time, detects the module temperature of the power module of air conditioner to avoid appearing module temperature detection mistake protection, for example, the air conditioner heats after the operation N minutes, begins to detect the module temperature of power module.
The first determining unit 120 is configured to determine whether the module temperature of the power module detected by the first detecting module satisfies a first preset condition.
The first preset condition may specifically include: and the continuous first preset time of the module temperature is less than a first preset temperature value. The first preset temperature can be determined by statistical analysis of test data obtained by experimental tests. In order to avoid deviation of module temperature detection, whether the module temperature is smaller than a first preset temperature value or not is judged continuously for a first preset time. The first preset time is different for different compressors and air conditioners with different cold energy sections. For example, the first preset time is M, the first preset temperature value is X ℃, and whether the module temperature of the power module is less than X ℃ for M seconds continuously is determined.
The second detecting unit 130 is configured to detect an ambient temperature of an environment where the air conditioner is located if the first determining unit determines that the module temperature meets the first preset condition.
For example, if the module temperature of the power module is less than X ℃ for M seconds, the second detection unit 130 detects the ambient temperature of the environment where the air conditioner is located through the ambient temperature detection circuit.
The second determining unit 140 is configured to determine whether a power module temperature detection fault occurs in the air conditioner according to whether the ambient temperature detected by the second detecting unit satisfies a second preset condition.
Specifically, if the ambient temperature does not satisfy the second preset condition, the second determining unit 140 determines that a power module temperature detection fault occurs in the air conditioner. If the ambient temperature meets the second preset condition, the second determination unit 140 determines that the air conditioner has no temperature detection fault of the power module.
The second preset condition may specifically include: and the continuous second preset time of the environment temperature is less than a second preset temperature value. The ambient temperature detection has deviation or external interference, so whether the ambient temperature is smaller than a second preset temperature value or not is judged continuously for a second preset time, and misoperation of the air conditioner is prevented. The second preset time and the second preset temperature can be determined by statistical analysis of test data obtained through experimental tests, and the second preset time and the second preset temperature of different compressors and air conditioners in different cold energy sections are different. The second preset time may be the same as or different from the first preset time.
The second preset temperature value is a threshold value set according to experimental data, and when the ambient temperature is higher than the second preset temperature value, the module temperature is in the accurate detection range of the air conditioner when the air conditioner operates at the lowest load; when the ambient temperature is lower than the second preset temperature value, the module temperature is possibly too low, and the air conditioner directly judges the condition of the module temperature detection circuit fault, so that whether the condition is met or not is judged, the reliability of ambient temperature detection is ensured, and the occurrence of false alarm module temperature detection fault is avoided.
For example, the second determining unit 140 determines whether the ambient temperature satisfies that M seconds are less than Z ℃ continuously, and determines that the air conditioner is a power module temperature detection fault if the ambient temperature does not satisfy that M seconds are less than Z ℃ continuously; and if the ambient temperature meets the condition that M seconds are less than Z ℃, detecting the fault of the unpowered module of the air conditioner. If the second judging unit 140 determines that the air conditioner is in the power module temperature detection fault, the air conditioner is shut down and reports the power module temperature detection fault, and if the second judging unit 140 determines that the air conditioner is not in the power module temperature detection fault, the air conditioner operates normally.
In the prior art, the detection of the temperature of the power module is to directly determine that the detection of the temperature of the power module is abnormal when the temperature of the detection module is lower than a certain threshold. However, under the low-temperature working condition, when the air conditioner runs at low load, the loss of the power module is low, so the temperature rise is low, and is possibly close to the ambient temperature, and if the temperature of the module is lower than the set threshold value at the moment, the air conditioner has the module temperature detection fault. However, the air conditioner is normally operated under the condition, the air conditioner is protected only due to the problem of detection precision, and the air conditioner is misinformed. According to the invention, the temperature of the module is detected firstly, when the temperature of the module is lower than a certain threshold value, the ambient temperature is detected, if the ambient temperature is lower than the certain threshold value, the detection fault of the power module can not be reported, and the air conditioner operates normally. The temperature of the module is not detected in a low-temperature environment, so that the problem of misinformation of the temperature detection fault of the module is avoided.
Fig. 4 is a schematic structural diagram of another embodiment of a power module temperature detection control device provided in the present invention. As shown in fig. 4, the temperature detection control apparatus 100 further includes a third determination unit 150.
The third determining unit 150 is configured to determine whether a power module detection fault occurs in the air conditioner according to whether the module temperature satisfies a third preset condition if the first determining unit 120 determines that the module temperature does not satisfy the first preset condition.
Specifically, the third preset condition may include that the module temperature continues for a third preset time longer than a third preset temperature value. If the module temperature does not satisfy the first preset condition, that is, the module temperature does not satisfy the continuous first preset time and is less than the first preset temperature value, the third determining unit 150 determines whether the module temperature continues for a third preset time and is greater than the third preset temperature value. If the third judging unit 150 judges that the module meets the condition that the continuous third preset time is greater than the third preset temperature value, it is determined that the air conditioner has a power module temperature detection fault. Optionally, the third preset time may be the same as or different from the first preset time.
For example, if the module temperature does not meet the condition that M seconds are less than X ℃, continuously judging whether the module temperature is greater than Y seconds continuously, and if the module temperature meets the condition that M seconds is greater than Y ℃, determining that the air conditioner is a power module temperature detection fault. If the air conditioner is determined to be in the power module temperature detection fault, the air conditioner is shut down, and the power module temperature detection fault is reported. The module temperature detection has deviation or external interference, and the continuous judgment for a period of time (third preset time) is used for preventing the air conditioner from generating misoperation due to the interference. The judgment of whether the module temperature is higher than a certain temperature value (third preset temperature value) is to prevent the power module from being burnt out due to overhigh temperature rise of the module. When the module temperature is higher than a third preset temperature value, the air conditioner reports the module temperature detection fault, the air conditioner stops to process, and the power module is prevented from being damaged.
The invention also provides a storage medium corresponding to the power module temperature detection control method, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, the computer program realizes the steps of any one of the methods.
The invention also provides an air conditioner corresponding to the power module temperature detection control method, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.
The invention also provides an air conditioner corresponding to the power module temperature detection control device, which comprises any one of the power module temperature detection control devices.
Therefore, according to the scheme provided by the invention, through detecting and processing the temperature of the power module and the ambient temperature, the temperature of the module is detected firstly, when the temperature of the module is lower than a certain threshold value, the ambient temperature is detected again, and if the ambient temperature is lower than the certain threshold value, the air conditioner operates normally. The temperature of the module is not detected in a low-temperature environment, the problem of temperature detection faults of the false alarm module is avoided, the problem of temperature detection faults of the false alarm module of the air conditioner when the air conditioner runs at a low load in the low-temperature environment is solved, and the influence on the normal use of the air conditioner caused by the temperature detection faults of the false alarm module is avoided.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A power module temperature detection control method is characterized by comprising the following steps:
detecting the module temperature of a power module of an air conditioner when the air conditioner is in heating operation;
judging whether the module temperature of the power module meets a first preset condition or not;
if the module temperature meets the first preset condition, detecting the ambient temperature of the environment where the air conditioner is located;
judging whether the air conditioner has a power module temperature detection fault according to whether the environment temperature meets a second preset condition, comprising:
if the ambient temperature does not meet the second preset condition, determining that a power module temperature detection fault occurs in the air conditioner;
the second preset condition includes: the continuous second preset time of the environment temperature is less than a second preset temperature value; the first preset condition comprises: the continuous first preset time of the module temperature is less than a first preset temperature value;
further comprising:
if the module temperature does not meet the first preset condition, judging whether the air conditioner has a power module detection fault according to whether the module temperature meets a third preset condition;
wherein the third preset condition includes: and the continuous third preset time of the module temperature is greater than a third preset temperature value.
2. The method of claim 1, wherein a module temperature of a power module of the air conditioner is detected after a fourth preset time of a heating operation of the air conditioner.
3. A power module temperature detection control apparatus, comprising:
the first detection unit is used for detecting the module temperature of a power module of the air conditioner when the air conditioner is in heating operation;
the first judging unit is used for judging whether the module temperature of the power module detected by the first detecting unit meets a first preset condition or not;
the second detection unit is used for detecting the ambient temperature of the environment where the air conditioner is located if the first judgment unit judges that the module temperature meets the first preset condition;
the second judging unit is configured to judge whether a power module temperature detection fault occurs in the air conditioner according to whether the ambient temperature detected by the second detecting unit satisfies a second preset condition, and includes:
if the ambient temperature does not meet the second preset condition, determining that a power module temperature detection fault occurs in the air conditioner;
the second preset condition includes: the continuous second preset time of the environment temperature is less than a second preset temperature value; the first preset condition comprises: the continuous first preset time of the module temperature is less than a first preset temperature value;
further comprising:
the third judging unit is used for judging whether the air conditioner has a power module detection fault according to whether the module temperature meets a third preset condition or not if the first judging unit judges that the module temperature does not meet the first preset condition;
wherein the third preset condition includes: and the continuous third preset time of the module temperature is greater than a third preset temperature value.
4. The apparatus of claim 3, wherein a module temperature of a power module of the air conditioner is detected after a fourth preset time of a heating operation of the air conditioner.
5. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1-2.
6. An air conditioner comprising a processor, a memory, and a computer program stored in the memory and operable on the processor, wherein the processor executes the program to perform the steps of the method of any one of claims 1-2 or the power module temperature detection control apparatus of any one of claims 3-4.
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| CN104566826B (en) * | 2014-12-31 | 2017-06-16 | 广东美的制冷设备有限公司 | Convertible frequency air-conditioner and its compressor control method and device |
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