CN116754938B - Fault detection method and system for contactor of air conditioning equipment in air conditioning unit - Google Patents
Fault detection method and system for contactor of air conditioning equipment in air conditioning unit Download PDFInfo
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- CN116754938B CN116754938B CN202311048110.0A CN202311048110A CN116754938B CN 116754938 B CN116754938 B CN 116754938B CN 202311048110 A CN202311048110 A CN 202311048110A CN 116754938 B CN116754938 B CN 116754938B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 260
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims description 24
- 230000000630 rising effect Effects 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 9
- 230000007257 malfunction Effects 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention relates to the technical field of fault detection of contactors, and provides a fault detection method of a contactor of air conditioning equipment in an air conditioning unit, which aims to avoid the situation that false alarm occurs due to the fact that an auxiliary contact of the contactor cannot accurately feed back the actual state of the contactor of a heater due to factors such as dust entering of the contact, and the like, and comprises the following steps: in the running process of the air conditioning unit, controlling the corresponding contactors of the air conditioning equipment to be sequentially connected or disconnected by taking a first preset time as a time interval, and acquiring the total running current of the air conditioning unit in real time; and judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit in the first preset time after the contactor of the target air conditioning equipment is sucked or disconnected.
Description
Technical Field
The invention relates to the technical field of fault detection of contactors, in particular to a fault detection method and a fault detection system of a contactor of air conditioning equipment in an air conditioning unit.
Background
In the related art, each air conditioning device (such as an air conditioning fan, a heater, a compressor, etc.) in a train air conditioning unit is usually turned on and off by using a respective contactor, and an auxiliary contact is installed on the contactor to feed back the on or off state of the contactor.
However, in the practical application process, the auxiliary contact of the contactor can not accurately feed back the actual state of the contactor of the heater due to factors such as contact ash feeding, so that false alarm occurs, and the reliability of the system is greatly reduced.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a fault detection method for contactors of air conditioning equipment in an air conditioning unit, which can judge whether the contactors of the air conditioning equipment have faults according to the total running current of the air conditioning unit, has higher accuracy, avoids the situation of false alarm, and greatly improves the reliability of a system.
The technical scheme adopted by the invention is as follows:
a fault detection method for contactors of air conditioning equipment in an air conditioning unit, wherein the number of the air conditioning equipment is N, comprises the following steps: in the running process of the air conditioning unit, controlling the corresponding contactors of the air conditioning equipment to be sequentially connected or disconnected by taking a first preset time as a time interval, and acquiring the total running current of the air conditioning unit in real time; and judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit in the first preset time after the contactor of the target air conditioning equipment is sucked or disconnected.
In one embodiment of the present invention, after the contactor of the target air conditioning apparatus is engaged or disengaged, determining whether the contactor of the target air conditioning apparatus has a fault according to the total operation current of the air conditioning unit within the first preset time includes: after the contactor of the target air conditioning equipment is sucked, judging whether the total running current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total running current of the air conditioning unit is not in the ideal rising trend within the first preset time; after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
In one embodiment of the present invention, after the contactor of the target air conditioning apparatus is engaged or disengaged, determining whether the contactor of the target air conditioning apparatus has a fault according to the total operation current of the air conditioning unit within the first preset time includes: after the contactor of the target air conditioning equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in the first preset time; and if the total running current of the air conditioning unit is not in the preset current range, judging that the contactor of the target air conditioning equipment is in an abnormal engaging or disengaging fault.
A fault detection system for a contactor of an air conditioning unit within an air conditioning unit, comprising: the acquisition module is used for controlling the corresponding contactors of the air conditioning equipment to be sequentially attracted or disconnected by taking the first preset time as a time interval in the running process of the air conditioning unit, and acquiring the total running current of the air conditioning unit in real time; and the judging module is used for judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit within the first preset time after the contactor of the target air conditioning equipment is sucked or disconnected.
In one embodiment of the present invention, the judging module is specifically configured to: after the contactor of the target air conditioning equipment is sucked, judging whether the total running current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total running current of the air conditioning unit is not in the ideal rising trend within the first preset time; after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
In one embodiment of the present invention, the judging module is specifically configured to: after the contactor of the target air conditioning equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in the first preset time; and if the total running current of the air conditioning unit is not in the preset current range, judging that the contactor of the target air conditioning equipment is in an abnormal engaging or disengaging fault.
The computer equipment comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor realizes the fault detection method of the contactor of the air conditioning equipment in the air conditioning unit when executing the computer program.
A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method of fault detection of a contactor of an air conditioning apparatus within an air conditioning unit.
The invention has the beneficial effects that:
the invention can judge whether the contactors of all air conditioning equipment have faults according to the total running current of the air conditioning unit, has higher accuracy, avoids the situation of false alarm, and greatly improves the reliability of the system.
Drawings
Fig. 1 is a flowchart of a fault detection method of a contactor of an air conditioning apparatus in an air conditioning unit according to an embodiment of the present invention;
fig. 2 is a block schematic diagram of a fault detection system of a contactor of an air conditioning apparatus in an air conditioning unit according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flowchart of a fault detection method of a contactor of an air conditioning apparatus in an air conditioning unit according to an embodiment of the present invention.
As shown in fig. 1, the fault detection method for the contactor of the air conditioning equipment in the air conditioning unit according to the embodiment of the invention may include the following steps:
s1, in the running process of the air conditioning unit, controlling the contactors of corresponding air conditioning equipment to be sequentially attracted or disconnected by taking the first preset time as a time interval, and acquiring the total running current of the air conditioning unit in real time.
Wherein, air conditioning equipment is N, and N is positive integer. For example, the air conditioning device may be an evaporation fan, a condensation fan, a compressor, a heater, or the like. The total running current of the air conditioning unit is the total current of a loop formed by a power supply of the air conditioning unit and N air conditioning devices.
Specifically, when the air conditioning unit is operated in the cooling mode, the contactor of the evaporation fan, the contactor of the condensation fan and the contactor of the compressor can be controlled to be in contact one by one at intervals of a first preset time, for example, after the contactor of the evaporation fan is in contact for 5s, the contactor of the condensation fan is in contact, and after the contactor of the condensation fan is in contact for 5s, the contactor of the compressor is in contact. If there are multiple compressors, the compressors are also sucked one by one, and the starting time interval of each compressor is 5s.
When the air conditioning unit operates in the heating mode, the contactor of the evaporation fan and the contactor of the heater can be controlled to be attracted one by one at intervals of a first preset time, for example, after the contactor of the evaporation fan is attracted for 5 seconds, the contactor of the heater is attracted. If a plurality of heaters are arranged, the plurality of heaters are also attracted one by one, and the starting time interval of each heater is also 5s.
S2, judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit in a first preset time after the contactor of the target air conditioning equipment is sucked or disconnected.
In one embodiment of the present invention, after the contactor of the target air conditioning apparatus is engaged or disengaged, determining whether the contactor of the target air conditioning apparatus has a fault according to the total operation current of the air conditioning unit within a first preset time includes: after the contactor of the target air conditioning equipment is sucked, judging whether the total operation current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total operation current of the air conditioning unit is not in the ideal rising trend within the first preset time; after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
Specifically, after the contactor of the target air conditioning equipment is sucked, the contactors of other air conditioning equipment are in a waiting state within a first preset time (which can be calibrated according to practical conditions, for example, 5 s), and judgment is performed within the first preset time. Specifically, whether the total operation current of the air conditioning unit is in an ideal rising trend in a first preset time is judged, and when the total operation current of the air conditioning unit is not in the ideal rising trend in the first preset time, the abnormal suction fault of the contactor of the target air conditioning equipment is judged. Taking the first preset time as an example, whether the difference between the total operation current of the air conditioning unit at the moment 5s and the total operation current of the air conditioning unit before the moment 5s is smaller than the preset current (the theoretical current minimum value of the target air conditioning equipment) can be judged, and if the difference is smaller than the preset current, the total operation current of the air conditioning unit is judged to not be in an ideal rising trend within the first preset time.
After the contactor of the target air conditioning equipment is disconnected, the contactors of other air conditioning equipment are in a waiting state within a first preset time (which can be calibrated according to actual conditions, for example, 5 s), and judgment is carried out within the first preset time. Specifically, whether the total operation current of the air conditioning unit is in an ideal descending trend in a first preset time is judged, and when the total operation current of the air conditioning unit is not in the ideal descending trend in the first preset time, the abnormal suction fault of the contactor of the target air conditioning equipment is judged. Taking the first preset time as an example, whether the difference between the total operation current of the air conditioning unit before 5s and the total operation current of the air conditioning unit at the moment of 5s is smaller than the preset current (the theoretical current minimum value of the target air conditioning equipment) can be judged, and if the difference is smaller than the preset current, the total operation current of the air conditioning unit is judged to not be in an ideal descending trend within the first preset time.
In another embodiment of the present invention, after the contactor of the target air conditioning apparatus is engaged or disengaged, determining whether the contactor of the target air conditioning apparatus has a fault according to the total operation current of the air conditioning unit within a first preset time includes: after the contactor of the target equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in a first preset time; if the total running current of the air conditioning unit is not in the preset current range, the contactor of the target air conditioning equipment is judged to have an abnormal fault of on or off.
Specifically, after the contactor of the target air conditioning equipment is sucked, the contactors of other air conditioning equipment are in a waiting state within a first preset time (which can be calibrated according to practical conditions, for example, 5 s), and judgment is performed within the first preset time. Specifically, whether the total operation current of the air conditioning unit is in a preset current range is judged in a first preset time, and if the total operation current of the air conditioning unit is not in the preset current range, the abnormal suction fault of the contactor of the target air conditioning unit is judged. The minimum value of the preset current range is the sum of the theoretical current minimum values of the air conditioning equipment corresponding to all the contactors in the suction state at present, and the maximum value of the preset current range is the sum of the theoretical current maximum values of the air conditioning equipment corresponding to all the contactors in the suction state at present.
Then, when the suction state of the other contactor is judged in the above manner, the contactor which is judged to have the suction abnormal fault is regarded as the non-suction state, and the load current of the air conditioning equipment corresponding to the contactor is not calculated to be within the range so as not to cause erroneous judgment when the other contactor is diagnosed.
After the contactor of the target air conditioning equipment is disconnected, the contactors of other air conditioning equipment are in a waiting state within a first preset time (which can be calibrated according to actual conditions, for example, 5 s), and judgment is carried out within the first preset time. Specifically, whether the total operation current of the air conditioning unit is in a preset current range is judged in a first preset time, and if the total operation current of the air conditioning unit is not in the preset current range, the contactor of the target air conditioning equipment is judged to have an abnormal disconnection fault. The minimum value of the preset current range is the sum of the theoretical current minimum values of the air conditioning equipment corresponding to all the contactors in the suction state at present, and the maximum value of the preset current range is the sum of the theoretical current maximum values of the air conditioning equipment corresponding to all the contactors in the suction state at present.
When the other contactors are judged to be in the off state in the above manner, the contactor judged to be in the off abnormal fault is regarded as still in the on state, and the load current of the air conditioning equipment corresponding to the contactor is calculated to be within the range so as not to cause erroneous judgment in the diagnosis of the other contactors.
In summary, according to the fault detection method for the contactor of the air conditioning equipment in the air conditioning unit according to the embodiment of the invention, during the operation of the air conditioning unit, the contactor of the corresponding air conditioning equipment is controlled to be sequentially closed or opened at a first preset time interval, the total operation current of the air conditioning unit is obtained in real time, and after the contactor of the target air conditioning equipment is closed or opened, whether the contactor of the target air conditioning equipment has a fault is judged according to the total operation current of the air conditioning unit in the first preset time interval. Therefore, whether the contactors of all the air conditioning equipment have faults or not can be judged according to the total running current of the air conditioning unit, the accuracy is high, the situation of false alarm is avoided, and the reliability of the system is greatly improved.
The invention also provides a fault detection system of the contactor of the air conditioning equipment in the air conditioning unit.
As shown in fig. 2, a fault detection system for a contactor of an air conditioning apparatus in an air conditioning unit according to an embodiment of the present invention may include: an acquisition module 100 and a judgment module 200.
The acquiring module 100 is configured to control, during operation of the air conditioning unit, a contactor of a corresponding air conditioning device to be sequentially turned on or off at a time interval of a first preset time, and acquire a total operation current of the air conditioning unit in real time; the judging module 200 is configured to judge whether the contactor of the target air conditioning apparatus fails according to the total operation current of the air conditioning unit within a first preset time after the contactor of the target air conditioning apparatus is engaged or disengaged.
In one embodiment of the present invention, the determining module 200 is specifically configured to: after the contactor of the target air conditioning equipment is sucked, judging whether the total operation current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total operation current of the air conditioning unit is not in the ideal rising trend within the first preset time; after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
In one embodiment of the present invention, the determining module 200 is specifically configured to: after the contactor of the target air conditioning equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in a first preset time; if the total running current of the air conditioning unit is not in the preset current range, the contactor of the target air conditioning equipment is judged to have an abnormal fault of on or off.
It should be noted that, for the specific embodiment of the fault detection system of the contactor of the air conditioning equipment in the air conditioning unit according to the present invention, reference may be made to the above embodiment of the fault detection method of the contactor of the air conditioning equipment in the air conditioning unit, and in order to avoid redundancy, details will not be described herein.
According to the fault detection system for the contactor of the air conditioning equipment in the air conditioning unit, the acquisition module is used for controlling the contactor of the corresponding air conditioning equipment to be sequentially closed or opened at a time interval in the running process of the air conditioning unit, the total running current of the air conditioning unit is acquired in real time, and whether the contactor of the target air conditioning equipment breaks down or not is judged according to the total running current of the air conditioning unit in the first preset time after the contactor of the target air conditioning equipment is closed or opened. Therefore, whether the contactors of all the air conditioning equipment have faults or not can be judged according to the total running current of the air conditioning unit, the accuracy is high, the situation of false alarm is avoided, and the reliability of the system is greatly improved.
The invention also provides a computer device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the fault detection method of the contactor of the air conditioning equipment in the air conditioning unit is realized when the processor executes the computer program.
According to the computer equipment provided by the embodiment of the invention, whether the contactors of all the air conditioning equipment have faults or not can be judged according to the total running current of the air conditioning unit, the accuracy is higher, and the situation of false alarm is avoided, so that the reliability of the system is greatly improved.
Corresponding to the above embodiment, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the above-mentioned method for detecting a fault of a contactor of an air conditioning apparatus in an air conditioning unit.
According to the non-transitory computer readable storage medium provided by the embodiment of the invention, whether the contactors of all air conditioning equipment have faults or not can be judged according to the total running current of the air conditioning unit, the accuracy is higher, and the situation of false alarm is avoided, so that the reliability of the system is greatly improved.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (6)
1. The fault detection method for the contactor of the air conditioning equipment in the air conditioning unit is characterized by comprising the following steps of:
in the running process of the air conditioning unit, controlling the corresponding contactors of the air conditioning equipment to be sequentially closed or opened by taking a first preset time as a time interval, and acquiring the total running current of the air conditioning unit in real time, wherein the total running current of the air conditioning unit is the total current of a loop formed by a power supply of the air conditioning unit and N air conditioning equipment;
judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit in the first preset time after the contactor of the target air conditioning equipment is sucked or disconnected; after the contactor of the target air conditioning equipment is closed or opened, judging whether the contactor of the target air conditioning equipment fails or not according to the total running current of the air conditioning unit in the first preset time, wherein the method comprises the following steps:
after the contactor of the target air conditioning equipment is sucked, judging whether the total running current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total running current of the air conditioning unit is not in the ideal rising trend within the first preset time;
after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
2. The method for detecting a malfunction of a contactor of an air conditioning apparatus in an air conditioning unit according to claim 1, wherein after the contactor of a target air conditioning apparatus is engaged or disengaged, determining whether the contactor of the target air conditioning apparatus has a malfunction according to the total operation current of the air conditioning unit within the first preset time includes:
after the contactor of the target air conditioning equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in the first preset time;
and if the total running current of the air conditioning unit is not in the preset current range, judging that the contactor of the target air conditioning equipment is in an abnormal engaging or disengaging fault.
3. A fault detection system for a contactor of an air conditioning unit in an air conditioning unit, comprising:
the acquisition module is used for controlling the corresponding contactors of the air conditioning equipment to be sequentially attracted or disconnected by taking the first preset time as a time interval in the running process of the air conditioning unit and acquiring the total running current of the air conditioning unit in real time, wherein the total running current of the air conditioning unit is the total current of a loop formed by a power supply of the air conditioning unit and N air conditioning equipment;
the judging module is used for judging whether the contactor of the target air conditioning equipment fails according to the total running current of the air conditioning unit in the first preset time after the contactor of the target air conditioning equipment is sucked or disconnected; the judging module is specifically configured to:
after the contactor of the target air conditioning equipment is sucked, judging whether the total running current of the air conditioning unit is in an ideal rising trend within a first preset time, and judging that the contactor of the target air conditioning equipment is in abnormal suction fault when the total running current of the air conditioning unit is not in the ideal rising trend within the first preset time;
after the contactor of the target air conditioning equipment is disconnected, judging whether the total running current of the air conditioning unit is in an ideal descending trend within a first preset time, and judging that the contactor of the target air conditioning equipment is disconnected abnormal when the total running current of the air conditioning unit is not in the ideal descending trend within the first preset time.
4. The fault detection system of a contactor of an air conditioning unit in an air conditioning unit according to claim 3, wherein the judging module is specifically configured to:
after the contactor of the target air conditioning equipment is closed or opened, judging whether the total running current of the air conditioning unit is in a preset current range or not in the first preset time;
and if the total running current of the air conditioning unit is not in the preset current range, judging that the contactor of the target air conditioning equipment is in an abnormal engaging or disengaging fault.
5. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements a method for detecting a fault of a contactor of an air conditioning device in an air conditioning unit according to any of claims 1 and 2.
6. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements the fault detection method of the contactor of an air conditioning apparatus in an air conditioning unit according to any one of claims 1 and 2.
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| US11156665B2 (en) * | 2018-11-08 | 2021-10-26 | GM Global Technology Operations LLC | Verifying operation of battery contactors during vehicle operation without loss of power |
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