CN111059696A - Power module temperature detection control method, computer readable storage medium and air conditioner - Google Patents
Power module temperature detection control method, computer readable storage medium and air conditioner Download PDFInfo
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- CN111059696A CN111059696A CN201911217038.3A CN201911217038A CN111059696A CN 111059696 A CN111059696 A CN 111059696A CN 201911217038 A CN201911217038 A CN 201911217038A CN 111059696 A CN111059696 A CN 111059696A
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- 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
- F24F2110/10—Temperature
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- Mechanical Engineering (AREA)
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a power module temperature detection control method, a computer readable storage medium and an air conditioner. The temperature of the power module and the ambient temperature are synchronously detected, the temperature detection fault of the power module is judged through the set judgment program, the detection accuracy is improved, the problem that the temperature detection fault of the power module is reported by mistake by an air conditioner is solved, and the use experience of a user is ensured.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a power module temperature detection control method, a computer readable 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 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.
For example, the method and apparatus for detecting the module temperature sensor of the air conditioning equipment in chinese patent CN107560097A propose a method for determining the operating state of the power module temperature sensor by detecting the ambient temperature and the power module temperature and comparing the ambient temperature and the power module temperature. However, the patent still does not solve the problem that the air conditioner false alarm module temperature detection fails under low-temperature environment and when the air conditioner runs at low load.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for preventing the temperature detection fault of the power module of the air conditioner from being mistakenly reported in a low-temperature environment, and the continuous, stable and efficient operation of the air conditioner is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a power module temperature detection control method is characterized in that in the heating operation process of an air conditioner, the current working environment temperature condition is judged by detecting the environment temperature in real time, the temperature of a power module is further detected, and the temperature data of the power module is calculated, analyzed and judged whether faults exist. The temperature of the power module and the ambient temperature are synchronously detected, the temperature detection fault of the power module is judged through the set judgment program, the detection accuracy is improved, the problem that the temperature detection fault of the power module is reported by mistake by an air conditioner is solved, and the use experience of a user is ensured.
Further, the judgment of the current working environment temperature condition through real-time detection of the environment temperature specifically comprises: and detecting the environment temperature Th, and if the Th is less than z ℃, judging that the current working environment temperature is in a low-temperature environment and the air conditioner normally operates, wherein z is a preset temperature value. The temperature value is set as a judgment condition of a low-temperature environment, when the ambient temperature detected by the temperature value is lower than the set temperature, the current air conditioner is in the low-temperature environment, the temperature of the power module is not too high when the air conditioner operates under the low-temperature working condition, and the temperature of the power module is not directly detected when the ambient temperature is lower than z ℃ for preventing the air conditioner from generating power module temperature error protection.
Further, the judgment of the current working environment temperature condition through real-time detection of the environment temperature specifically comprises: and detecting the ambient temperature Th, and if the Th is more than or equal to z ℃, judging that the current working ambient temperature is in a non-low-temperature environment, and further detecting the temperature of the power module for analysis. When the ambient temperature is higher than the set temperature, the temperature of the power module may be too high or too low, and under such a condition, the judgment cannot be made solely by the ambient temperature, and the accurate detection can be realized only by detecting and judging the temperature of the power module.
Further, the calculating, analyzing and judging whether the power module temperature data has a fault specifically includes: and detecting the temperature Tm of the power module, if the continuous m seconds Tm is less than X ℃, stopping the air conditioner, and detecting the temperature of the power module to give a fault alarm, wherein m is a preset time value, and X is a preset temperature value. The temperature detection of the power module has deviation or external interference, the fact that m seconds are smaller than x ℃ is continuously judged to prevent the air conditioner from generating misoperation, the fact that the temperature of the power module is smaller than x ℃ continuously indicates that the temperature of the power module is actually smaller than x ℃ at the moment, shutdown processing is needed, and the power module is prevented from being abnormal or even damaged due to the temperature detection fault of the power module.
Further, the calculating, analyzing and judging whether the power module temperature data has a fault specifically includes: and detecting the temperature Tm of the power module, if the Tm is less than x ℃ in m seconds, the air conditioner continues to normally operate, and meanwhile, detecting the temperature of the power module in real time, judging and analyzing. Through setting two judgment conditions, misjudgment of the air conditioner can be effectively prevented, and the accuracy of temperature detection of the power module is ensured.
Further, the real-time detection of the temperature of the power module at the same time specifically comprises: and detecting the temperature Tm of the power module, if the continuous m seconds Tm is greater than y ℃, stopping the air conditioner, and detecting the temperature of the power module to give a fault alarm, wherein y is a preset temperature value and is greater than x. The module temperature detection has deviation or external interference, the continuous judgment that m seconds is greater than y ℃ is used for preventing the air conditioner from generating misoperation, the continuous m seconds of the module temperature is greater than y ℃, the module temperature is actually greater than y ℃ at the moment, and the shutdown treatment can effectively prevent the power module from being burnt out due to overhigh module temperature.
Further, the real-time detection of the temperature of the power module at the same time specifically comprises: and detecting the temperature Tm of the power module, and if the Tm is not greater than y ℃ in m seconds continuously, continuing normal operation of the air conditioner.
A computer readable storage medium storing a computer program which when invoked by a processor implements the power module temperature detection control method of any of the above.
An air conditioner comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements a power module temperature detection control method as claimed in any preceding claim.
The power module temperature detection control method, the computer readable storage medium and the air conditioner provided by the invention have the beneficial effects that: by detecting and processing the temperature of the power module and the ambient temperature, the problem that the air conditioner misreports the temperature detection fault of the power module when the air conditioner runs at low load in a low-temperature environment is solved; the normal use of the air conditioner is prevented from being influenced by the temperature detection fault of the false alarm power module.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
Example 1: a temperature detection control method for a power module.
As shown in fig. 1, a method for detecting and controlling the temperature of a power module includes the following steps:
step one, starting a heating operation mode of an air conditioner;
step two, after the air conditioner runs for n minutes by the compressor, the main controller of the air conditioner calls the ambient temperature (the n minutes is determined according to the actual running condition);
step three, judging the sampling value of the environmental temperature by the air conditioner, and judging whether the environmental temperature is less than z ℃; the temperature of z ℃ is determined according to the actual situation; if not, entering the step four; if so, the air conditioner operates normally, and meanwhile, the step two is re-entered; under the low-temperature working condition, the temperature of the power module is not too high when the air conditioner runs, and in order to prevent the air conditioner from generating module temperature error protection, the temperature of the module is not directly detected when the ambient temperature is lower than z ℃;
step four, the main controller of the air conditioner calls the temperature of the power module;
judging the sampling value of the temperature of the power module by the air conditioner, wherein whether the temperature of the power module is less than x within m seconds continuously; m seconds and x ℃ are determined according to actual conditions; if not, entering a sixth step; if so, stopping the air conditioner and reporting the temperature detection fault of the module at the same time; deviation or external interference exists in module temperature detection, and misoperations of the air conditioner are prevented by continuously judging that m seconds are less than x ℃; when the module temperature is less than X ℃ for m seconds continuously, the module temperature is actually less than X ℃, and the air conditioner executes the next action;
step six, judging whether the temperature of the power module is continuously m seconds and is greater than y ℃; y ℃ is determined according to actual conditions; if not, the air conditioner operates normally, and meanwhile, the step two is re-entered; if so, stopping the air conditioner and reporting the temperature detection fault of the module at the same time; the module temperature detection has deviation or external interference, the continuous judgment that m seconds is greater than y ℃ is used for preventing the air conditioner from generating misoperation, the continuous m seconds of the module temperature is greater than y ℃, the module temperature is actually greater than y ℃ at the moment, and the shutdown treatment can effectively prevent the power module from being burnt out due to overhigh module temperature.
Example 2: a computer readable storage medium.
A computer-readable storage medium storing a computer program that, when invoked by a processor, implements the power module temperature detection control method of embodiment 1.
Example 3: an air conditioner.
An air conditioner comprising a processor and a memory for storing a computer program that, when invoked by the processor, implements the power module temperature detection control method of embodiment 1.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (9)
1. A power module temperature detection control method is characterized in that in the heating operation process of an air conditioner, the current working environment temperature condition is judged by detecting the environment temperature in real time, the temperature of a power module is further detected, and the temperature data of the power module is calculated, analyzed and judged whether a fault exists.
2. The method for detecting and controlling the temperature of the power module according to claim 1, wherein the step of determining the current working environment temperature by detecting the ambient temperature in real time specifically comprises: and detecting the environment temperature Th, and if the Th is less than z ℃, judging that the current working environment temperature is in a low-temperature environment and the air conditioner normally operates, wherein z is a preset temperature value.
3. The method for detecting and controlling the temperature of the power module according to claim 1, wherein the step of determining the current working environment temperature by detecting the ambient temperature in real time specifically comprises: and detecting the ambient temperature Th, and if the Th is more than or equal to z ℃, judging that the current working ambient temperature is in a non-low-temperature environment, and further detecting the temperature of the power module for analysis.
4. The method for detecting and controlling the temperature of the power module according to claim 1, wherein the step of calculating, analyzing and judging whether the fault exists is specifically as follows: and detecting the temperature Tm of the power module, if the continuous m seconds Tm is less than X ℃, stopping the air conditioner, and detecting the temperature of the power module to give a fault alarm, wherein m is a preset time value, and X is a preset temperature value.
5. The method for detecting and controlling the temperature of the power module according to claim 1, wherein the step of calculating, analyzing and judging whether the fault exists is specifically as follows: and detecting the temperature Tm of the power module, if the Tm is less than x ℃ in m seconds, the air conditioner continues to normally operate, and meanwhile, detecting the temperature of the power module in real time, judging and analyzing.
6. The method for detecting and controlling the temperature of a power module according to claim 5, wherein the determining and analyzing of the simultaneous real-time detection of the temperature of the power module specifically comprises: and detecting the temperature Tm of the power module, if the continuous m seconds Tm is greater than y ℃, stopping the air conditioner, and detecting the temperature of the power module to give a fault alarm, wherein y is a preset temperature value and is greater than x.
7. The method for detecting and controlling the temperature of a power module according to claim 5, wherein the determining and analyzing of the simultaneous real-time detection of the temperature of the power module specifically comprises: and detecting the temperature Tm of the power module, and if the Tm is not greater than y ℃ in m seconds continuously, continuing normal operation of the air conditioner.
8. A computer-readable storage medium storing a computer program, wherein the computer program when invoked by a processor implements the power module temperature detection control method of any of claims 1-7.
9. An air conditioner comprising a processor and a memory for storing a computer program, wherein the computer program when invoked by the processor implements the power module temperature detection control method of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217038.3A CN111059696B (en) | 2019-12-03 | 2019-12-03 | Power module temperature detection control method, computer readable storage medium and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217038.3A CN111059696B (en) | 2019-12-03 | 2019-12-03 | Power module temperature detection control method, computer readable storage medium and air conditioner |
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| CN111059696A true CN111059696A (en) | 2020-04-24 |
| CN111059696B CN111059696B (en) | 2021-02-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566394A (en) * | 2021-07-21 | 2021-10-29 | 珠海格力电器股份有限公司 | Temperature detection method, device, equipment and storage medium |
| CN114822607A (en) * | 2022-04-01 | 2022-07-29 | 长鑫存储技术有限公司 | Heat dissipation device and computer system |
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| JPH11324934A (en) * | 1998-05-13 | 1999-11-26 | Matsushita Electric Ind Co Ltd | Compressor driver for air conditioner |
| CN104633845A (en) * | 2014-12-29 | 2015-05-20 | 广东美的制冷设备有限公司 | Temperature control method and device of air conditioner outdoor unit electric control plate |
| CN104896669A (en) * | 2015-06-04 | 2015-09-09 | 广东美的制冷设备有限公司 | Air conditioner and method for protecting and controlling same |
-
2019
- 2019-12-03 CN CN201911217038.3A patent/CN111059696B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11324934A (en) * | 1998-05-13 | 1999-11-26 | Matsushita Electric Ind Co Ltd | Compressor driver for air conditioner |
| CN104633845A (en) * | 2014-12-29 | 2015-05-20 | 广东美的制冷设备有限公司 | Temperature control method and device of air conditioner outdoor unit electric control plate |
| CN104896669A (en) * | 2015-06-04 | 2015-09-09 | 广东美的制冷设备有限公司 | Air conditioner and method for protecting and controlling same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566394A (en) * | 2021-07-21 | 2021-10-29 | 珠海格力电器股份有限公司 | Temperature detection method, device, equipment and storage medium |
| CN113566394B (en) * | 2021-07-21 | 2022-07-12 | 珠海格力电器股份有限公司 | Temperature detection method, device, equipment and storage medium |
| CN114822607A (en) * | 2022-04-01 | 2022-07-29 | 长鑫存储技术有限公司 | Heat dissipation device and computer system |
| CN114822607B (en) * | 2022-04-01 | 2023-12-12 | 长鑫存储技术有限公司 | Heat dissipation device and computer system |
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| CN111059696B (en) | 2021-02-26 |
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