Compressor bus voltage control method, device and air conditioner

Abstract

The application provides a kind of compressor bus voltage control method, device and air conditioner, belong to power electronics technical field, comprising: obtaining the current outdoor temperature of air conditioner compressor;At least one target electronic component of air conditioner compressor is obtained within first preset time length First temperature rise;In the case where first temperature rise is greater than first threshold value, according to the preset standard bus voltage, current outdoor temperature and the temperature rise threshold range where first temperature rise is located, the bus voltage of air conditioner compressor is determined and adjusted until first temperature rise is reduced to less than or equal to first threshold value.The application can adjust the bus voltage of compressor differently according to the different temperature rise threshold range where the amplitude of temperature rise is located when monitoring that the temperature rise of existing electronic component when compressor is running exceeds the standard, to make protective control, which can effectively protect and reduce the damage rate of air conditioner caused by excessive temperature rise of key electronic components.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power electronics, in particular to a compressor bus voltage control method and device and air conditioner. BACKGROUND

[0002] During the operation of the compressor, if the bus voltage is too high, the load will become larger, resulting in the current value of the entire electric control system being too large, at which time the temperature of some key electronic components (hereinafter referred to as target electronic components) on the computer board increases greatly. The abnormal heating of electronic components not only causes the electric control system to malfunction, but also is prone to burn out.

[0003] At present, when monitoring the operation of the compressor, if the abnormal heating of the electronic components is found, the compressor is generally stopped, and the control logic is simple and rough. At the same time, the abnormal heating of the electronic components caused by voltage fluctuation or the frequent misoperation or refusal of the switch protection may cause damage to the air conditioner. SUMMARY

[0004] The present application provides a compressor bus voltage control method, device and air conditioner to solve the defect that the air conditioner in the prior art cannot reasonably adjust the abnormal heating of the electronic components without affecting the normal operation state of the compressor.

[0005] In a first aspect, the present application provides a compressor bus voltage control method, comprising:

[0006] obtaining the current outdoor temperature of the compressor of the air conditioner;

[0007] obtaining the first temperature rise of at least one target electronic component of the compressor of the air conditioner within a first preset time period;

[0008] In the case where the first temperature rise is greater than a first threshold value, the bus voltage of the compressor of the air conditioner is determined and adjusted according to a preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range in which the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0009] According to the compressor bus voltage control method provided by the present application, after obtaining the current outdoor temperature of the compressor of the air conditioner, and before obtaining the first temperature rise of at least one target electronic component of the compressor of the air conditioner within a first preset time period, the method further comprises:

[0010] determining a first bus voltage according to the standard bus voltage, the current outdoor temperature and a first coefficient;

[0011] preliminarily adjusting the bus voltage of the compressor of the air conditioner to the first bus voltage;

[0012] The first bus voltage is positively correlated with the standard bus voltage and the first coefficient, and is negatively correlated with the current outdoor temperature.

[0013] The compressor bus voltage control method provided by the application determines and adjusts the bus voltage of the air conditioner compressor according to the preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range of the first temperature rise, and comprises the following steps.

[0014] If the temperature rise threshold range of the first temperature rise is greater than the first threshold but less than the second threshold, a second bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and a second coefficient.

[0015] The bus voltage of the air conditioner compressor is adjusted to the second bus voltage.

[0016] The second bus voltage is positively correlated with the standard bus voltage and the second coefficient, and is negatively correlated with the current outdoor temperature, and the second coefficient is less than the first coefficient.

[0017] The compressor bus voltage control method provided by the application further comprises the following steps, which are iteratively executed until the first temperature rise is reduced to less than or equal to the first threshold, after the bus voltage of the air conditioner compressor is adjusted to the second bus voltage.

[0018] After the air conditioner compressor runs for a second preset time length, a second temperature rise of the target electronic component within a first preset time length is obtained.

[0019] A second bus voltage is re-determined according to the standard bus voltage, the current outdoor temperature and the second coefficient.

[0020] The bus voltage of the air conditioner compressor is adjusted to the re-determined second bus voltage.

[0021] The compressor bus voltage control method provided by the application determines and adjusts the bus voltage of the air conditioner compressor according to the preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range of the first temperature rise, and further comprises the following steps.

[0022] If the temperature rise threshold range of the first temperature rise is greater than or equal to the second threshold, a third bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and a third coefficient.

[0023] The bus voltage of the air conditioner compressor is adjusted to the third bus voltage.

[0024] The third bus voltage is positively correlated with the standard bus voltage and the third coefficient, and is negatively correlated with the current outdoor temperature, and the third coefficient is less than the second coefficient.

[0025] The compressor bus voltage control method further comprises iteratively performing the following steps until the first temperature rise is less than or equal to the first threshold value after adjusting the bus voltage of the air conditioner compressor to the third bus voltage:

[0026] After the air conditioner compressor runs for a second preset time length, a third temperature rise of the target electronic component within a first preset time length is obtained.

[0027] A third bus voltage is re-determined according to the standard bus voltage, the current outdoor temperature and the third coefficient.

[0028] The bus voltage of the air conditioner compressor is adjusted to the re-determined third bus voltage.

[0029] The compressor bus voltage control method further comprises the following steps in the case that the first temperature rise is less than or equal to the first threshold value:

[0030] The temperature rises of all target electronic components of the air conditioner compressor within a first preset time length are periodically collected at a preset frequency.

[0031] In the case that any of the temperature rises is greater than the first threshold value, the bus voltage of the air conditioner compressor is determined and adjusted according to a preset standard bus voltage, the current outdoor temperature and a temperature rise threshold range in which the first temperature rise is located, until the first temperature rise is less than or equal to the first threshold value.

[0032] The compressor bus voltage control method further comprises the following steps before determining and adjusting the bus voltage of the air conditioner compressor according to a preset standard bus voltage, the current outdoor temperature and a temperature rise threshold range in which the first temperature rise is located after initially adjusting the bus voltage of the air conditioner compressor to the first bus voltage:

[0033] The running state of the air conditioner compressor is determined according to the rotation speed and the phase current of the air conditioner compressor.

[0034] If it is determined that the running state is abnormal, the air conditioner compressor is controlled to stop running, and a compressor fault code is output.

[0035] If it is determined that the running state is normal, the driving state of the air conditioner compressor is detected.

[0036] If it is determined that the driving state is abnormal, the compressor of the air conditioner is controlled to stop running, and a driving fault code is outputted;

[0037] If it is determined that the driving state is normal, a current bus voltage of the compressor of the air conditioner is acquired;

[0038] The current bus voltage is compared with the first bus voltage in size;

[0039] If the current bus voltage is greater than the first bus voltage, the compressor of the air conditioner is controlled to stop running, and a bus voltage control program fault is outputted.

[0040] In a second aspect, the present application further provides a compressor bus voltage control device, comprising:

[0041] A temperature acquisition unit is configured to acquire a current outdoor temperature of the compressor of the air conditioner;

[0042] A temperature rise detection unit is configured to acquire a first temperature rise of at least one target electronic component of the compressor of the air conditioner within a first preset time length;

[0043] A running control unit is configured to determine, in a case where the first temperature rise is greater than a first threshold value, a bus voltage of the compressor of the air conditioner according to a preset standard bus voltage, the current outdoor temperature and a temperature rise threshold value range in which the first temperature rise is located, and adjust the bus voltage until the first temperature rise is reduced to be less than or equal to the first threshold value.

[0044] In a third aspect, the present application provides an air conditioner, comprising: an air conditioner body;

[0045] The air conditioner body is provided with a processor and a compressor of the air conditioner; further comprising a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor to perform the compressor bus voltage control method according to any one of the first aspect.

[0046] The compressor bus voltage control method, device and air conditioner provided by the present application can adjust the bus voltage of the compressor differently according to different temperature rise threshold value ranges in which the temperature rise amplitude is located when it is monitored that the temperature rise of the existing electronic component during the operation of the compressor exceeds the standard, so as to make protective control, and can effectively protect and reduce the damage rate of the air conditioner caused by excessive temperature rise of the key electronic component. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to make the technical solutions in the present application or prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0048] Figure 1 is one of flowcharts of the compressor bus voltage control method provided by the present application;

[0049] Figure 2 is another flowchart of the compressor bus voltage control method provided by the present application;

[0050] Figure 3 is a structural schematic diagram of the compressor bus voltage control device provided by the present application;

[0051] Figure 4 is a structural schematic diagram of the electronic device provided by the present application. DETAILED DESCRIPTION

[0052] In order to make the technical solutions in the present application or prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0053] It should be noted that in the description of the embodiments of the present application, the terms "comprising", "containing" or any other variants thereof are intended to cover the non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element. The terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application are implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in a "or" relationship.

[0055] Figure 1 is one of the flowcharts of the compressor bus voltage control method provided by the present application, as shown in Figure 1 including but not limited to the following steps:

[0056] Step 101: obtaining the current outdoor temperature (hereinafter referred to as T) of the air conditioner compressor.

[0057] The method for obtaining the current outdoor temperature includes but is not limited to arranging a temperature sensor on the outdoor unit of the air conditioner, which transmits the collected outdoor temperature to the air conditioner processor in real time.

[0058] Step 102: obtaining the first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time.

[0059] The target electronic components can be some key electronic components on a computer board of an air conditioner compressor or electronic components with large heat generation.

[0060] The first preset time length can be set according to actual control needs, for example, set to any time length in 1 minute to 3 minutes.

[0061] The temperature rise of each target electronic component in the first preset time length is measured and recorded as a first temperature rise.

[0062] Step 103: In the case that the first temperature rise is greater than a first threshold value, a bus voltage of the air conditioner compressor is determined and adjusted according to a preset standard bus voltage, the current outdoor temperature and a temperature rise threshold range in which the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0063] The greater the first temperature rise of any target electronic component, the greater the heat generation of the target electronic component, so different bus voltage control strategies can be formulated according to the size of the first temperature rise.

[0064] The maximum value determined from the first temperature rises of all target electronic components is used as a reference factor for formulating and executing a bus voltage control strategy.

[0065] As long as the first temperature rise of any target electronic component is greater than the first threshold value (for example, 88℃), different bus voltage control strategies can be executed according to the preset standard bus voltage (denoted as V), the current outdoor temperature T and the temperature rise threshold range in which the first temperature rise T1 is located.

[0066] It should be noted that the standard bus voltage V can be determined by testing, for example, by testing the operating conditions of the air conditioner compressor under different temperatures and different bus voltages under experimental conditions to calibrate the bus voltage that optimizes the operating conditions of the air conditioner compressor at each temperature, and finally generating a temperature-standard bus voltage reference table stored in the air conditioner processor. In this way, after obtaining the current outdoor temperature of the air conditioner compressor, the air conditioner processor can quickly query the corresponding standard bus voltage.

[0067] For example, if the first temperature rise is in a temperature rise threshold range greater than the first threshold 88℃ but less than the second threshold 90℃, it indicates that the temperature rise of the target electronic component corresponding to the first temperature rise is out of the allowable range, at this time, a bus voltage can be calculated through the standard bus voltage V, the current outdoor temperature T and the coefficient associated with the temperature rise threshold range of the first temperature rise T1, and the actual bus voltage of the air conditioner compressor is reduced to the calculated bus voltage.

[0068] Due to the reduction of the bus voltage of the air conditioner compressor, the phase current of the compressor can be reduced to a certain extent. In the case of reduced phase current, the heat generation of the target electronic component can be reduced accordingly, and the temperature rise can be reduced until it is less than or equal to the first threshold.

[0069] For example, if the first temperature rise is in a temperature rise threshold range greater than the second threshold 90℃, it indicates that the temperature rise of the target electronic component corresponding to the first temperature rise is not in the allowable range, at this time, a bus voltage can be calculated again through the standard bus voltage V, the current outdoor temperature T and the coefficient associated with the temperature rise threshold range of the first temperature rise T1, and the bus voltage of the air conditioner compressor is adjusted to the calculated bus voltage.

[0070] It should be noted that the coefficient associated with the calculation of the bus voltage is different when the first temperature rise of the air conditioner compressor is in different temperature rise threshold ranges. The greater the first temperature rise, the greater the minimum value of the corresponding temperature rise threshold range, the smaller the corresponding coefficient for calculating the bus voltage, the smaller the calculated bus voltage, and the greater the reduction of the bus voltage of the air conditioner compressor, and the greater the reduction of the phase current of the air conditioner compressor, and the better the temperature rise adjustment effect of the target electronic component.

[0071] The compressor bus voltage control method provided by the application can effectively protect and reduce the damage rate of the air conditioner caused by excessive temperature rise of the key electronic component.

[0072] Based on the above embodiment, as an optional embodiment, after obtaining the current outdoor temperature of the air conditioner compressor, and before obtaining the first temperature rise of the at least one target electronic component of the air conditioner compressor within the first preset time, the method further comprises:

[0073] determining a first bus voltage according to the standard bus voltage, the current outdoor temperature and a first coefficient;

[0074] preliminarily adjusting the bus voltage of the air conditioner compressor to the first bus voltage;

[0075] The first bus voltage is positively correlated with the standard bus voltage and the first coefficient, and is negatively correlated with the current outdoor temperature.

[0076] Figure 2 is a flowchart of the compressor bus voltage control method provided by the present application, as shown in Figure 2 The compressor bus voltage control method provided by the present application can calculate the bus voltage of the air conditioner compressor suitable for the current outdoor temperature according to the outdoor environment temperature T (outdoor temperature) and the corresponding standard bus voltage V , which is called the first bus voltage V 1, to preliminarily adjust the current bus voltage of the air conditioner compressor.

[0077] As an optional embodiment, the calculation formula for calculating the first bus voltage can be:

[0078] ;

[0079] wherein the first coefficient can be 1.

[0080] The compressor bus voltage control method provided by the present application preliminarily adjusts the bus voltage according to the outdoor temperature before adjusting the bus voltage according to the first temperature rise of the target electronic component within the first preset time length, which can solve the problem of excessive temperature rise of some target electronic components to a certain extent, and if the problem of excessive temperature rise of the target electronic component can be solved after the preliminary adjustment (i.e., all target electronic components are less than the first threshold value), the subsequent process can be simplified.

[0081] Based on the above embodiment, as an optional embodiment, the determination and adjustment of the bus voltage of the air conditioner compressor according to the preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range of the first temperature rise comprises:

[0082] If the temperature rise threshold range of the first temperature rise is greater than the first threshold value but less than the second threshold value, a second bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and a second coefficient;

[0083] adjusting the bus voltage of the air conditioner compressor to the second bus voltage;

[0084] The second bus voltage is positively correlated with the standard bus voltage and the second coefficient, and is negatively correlated with the current outdoor temperature, and the second coefficient is less than the first coefficient.

[0085] In combination Figure 2 As shown, assuming that the first threshold value is 88℃ and the second threshold value is 90℃. For ease of expression, it is assumed that the number of target electronic components is two, which are denoted as electronic component A and electronic component B.

[0086] The temperature rise of the electronic component A and the electronic component B is obtained respectively T A And T B Assuming that T A is greater than T B At this time, the first temperature rise T 1 is equal to T A .

[0087] If it is determined that T1 is greater than the first threshold value 88℃ but less than the second threshold value 90℃, it can be determined that the second coefficient k 2 is obtained, and the current outdoor temperature and the corresponding standard bus voltage are obtained. Then, the bus voltage of the air conditioner compressor (for ease of expression, the bus voltage at this time is referred to as the second bus voltage ) can be calculated and adjusted according to the following calculation formula:

[0088] ;

[0089] Wherein, the second coefficient k 2 can be 0.99, which is slightly less than the first coefficient k 1 of the preliminary adjustment.

[0090] As an optional embodiment, after adjusting the bus voltage of the air conditioner compressor to the second bus voltage , the following steps are iteratively executed until the first temperature rise T 1 is reduced to less than or equal to the first threshold value:

[0091] After the air conditioner compressor runs for a second preset time, the second temperature rise T 2 of the target electronic component within a first preset time is obtained;

[0092] According to the standard bus voltage V , the current outdoor temperature T and the second coefficient k 2, the second bus voltage is re-determined;

[0093] adjusting the bus voltage of the air conditioner compressor to the re-determined second bus voltage .

[0094] The second preset time length is 3 minutes. After the bus voltage of the air conditioner compressor is determined and adjusted to the second bus voltage according to the preset standard bus voltage, the current outdoor temperature and the second coefficient, the temperature rise of the target electronic component in the first preset time length is re-acquired after 3 minutes (the first preset time length is 1 minute).

[0095] If the temperature rise of the target electronic component in the first preset time length re-acquired after the bus voltage of the air conditioner compressor is adjusted to the second bus voltage is less than the first threshold value 88℃, it is indicated that the purpose has been achieved by reducing the bus voltage to the second bus voltage. T 2) has been less than the first threshold value 88℃, it is indicated that the purpose has been achieved by reducing the bus voltage to the second bus voltage.

[0096] If the second temperature rise of the target electronic component re-acquired after the bus voltage of the air conditioner compressor is adjusted to the second bus voltage is still greater than the first threshold value after 3 minutes, a new second bus voltage is re-determined and set according to the above method. T 2) is still greater than the first threshold value, a new second bus voltage is re-determined and set according to the above method.

[0097] The above steps are iteratively performed until the second temperature rise of the target electronic component detected under the re-adjusted second bus voltage T 2) is less than or equal to the first threshold value 88℃.

[0098] The compressor bus voltage control method provided by the application can continuously verify the effect of each adjustment according to the temperature rise of the target electronic component until the air conditioner compressor runs normally under the adjusted second bus voltage, and can effectively protect and reduce the damage rate of the air conditioner caused by voltage fluctuation.

[0099] Based on the above embodiment, as an optional embodiment, the bus voltage of the air conditioner compressor is determined and adjusted according to the preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range of the first temperature rise, and the method further comprises:

[0100] If the temperature rise threshold range of the first temperature rise is greater than or equal to the second threshold value, a third bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and a third coefficient.

[0101] The bus voltage of the air conditioner compressor is adjusted to the third bus voltage.

[0102] The third bus voltage is positively correlated with the standard bus voltage and the third coefficient, and negatively correlated with the current outdoor temperature, and the third coefficient is less than the second coefficient.

[0103] In combination Figure 2 It is still assumed that the first threshold is 88℃ and the second threshold is 90℃.

[0104] If it is determined that T 1 is greater than or equal to the second threshold 90℃, the third coefficient k 3 can be determined as 0.98, which is slightly less than the value of the second coefficient 2 in the above embodiment (0.99).

[0105] ;

[0106] The third coefficient k 3 can be 0.98, which is slightly less than the value of the second coefficient k 2 in the above embodiment (0.99). T 1 is greater, the phase current that causes the temperature to rise quickly needs to be reduced. Since the third coefficient k 3 is less than the second coefficient k 2 at this time, the calculated third bus voltage is less than T 1 is greater than the first threshold and less than the second threshold, so after adjusting the bus voltage of the air conditioner compressor to the third bus voltage , the phase current of the air conditioner compressor will be further reduced.

[0107] As an optional embodiment, after adjusting the bus voltage of the air conditioner compressor to the third bus voltage , the following steps are iteratively executed until the first temperature rise T 1 is reduced to less than or equal to the first threshold:

[0108] After the air conditioner compressor runs for a second predetermined time, a third temperature rise T 3 of the target electronic component within a first predetermined time is obtained.

[0109] According to the standard bus voltage, the current outdoor temperature and the third coefficient k 3, the third bus voltage V 3 is re-determined.

[0110] adjusting the bus voltage of the air conditioner compressor to a re-determined third bus voltage V 3.

[0111] The second preset time length is 3 minutes, and the bus voltage of the air conditioner compressor is adjusted to the third bus voltage according to the preset standard bus voltage V , the current outdoor temperature T and the third coefficient k 3, and after 3 minutes, the temperature rise of the target electronic component in the first preset time length (assuming that the first preset time length is 1 minute) is re-acquired.

[0112] If the temperature rise of the target electronic component in the first preset time length (for convenience of description, referred to as the third temperature rise 3) re-detected after 3 minutes after the bus voltage of the air conditioner compressor is adjusted to the third bus voltage T is less than the first threshold 88℃, it means that the purpose has been achieved by reducing the bus voltage to the third bus voltage.

[0113] If the third temperature rise 3 of the target electronic component re-detected after 3 minutes after the bus voltage of the air conditioner compressor is adjusted to the third bus voltage T is still greater than the first threshold, a new third bus voltage needs to be re-determined and set according to the above method.

[0114] The above steps are iteratively executed until the third temperature rise T 3 of the target electronic component detected under the re-adjusted third bus voltage is less than or equal to the first threshold 88℃.

[0115] The compressor bus voltage control method provided by the application can continuously verify the effect of each adjustment according to the temperature rise of the target electronic component until the air conditioner compressor runs normally under the adjusted second bus voltage, which can effectively protect and reduce the damage rate of the air conditioner caused by voltage fluctuation.

[0116] Based on the above embodiment, as an optional embodiment, in the case that the first temperature rise T 1 is less than or equal to the first threshold, it further includes:

[0117] According to a preset frequency, the temperature rise of all target electronic components of the air conditioner compressor in the first preset time length is periodically collected;

[0118] In any case where the first temperature rise is greater than the first threshold value, the bus voltage of the air conditioner compressor is determined and adjusted according to the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range where the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0119] Referring to Figure 2 As shown in the determination of the first temperature rise T 1 is less than or equal to the first threshold value 88℃, it indicates that the working state of the target electronic component is normal, at this time, there is no need to adjust the bus voltage of the air conditioner compressor, only needs to be continuously monitored, that is, periodically collect the temperature rise of all target electronic components of the air conditioner compressor within the first preset time (for example, every three minutes as a sampling, adjustment period).

[0120] Based on the above embodiment, as an optional embodiment, after the bus voltage of the air conditioner compressor is preliminarily adjusted to the first bus voltage, before the bus voltage of the air conditioner compressor is determined and adjusted according to the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range where the first temperature rise is located, it further includes:

[0121] According to the speed and phase current of the air conditioner compressor, the running state of the air conditioner compressor is determined;

[0122] If it is determined that the running state is abnormal, the air conditioner compressor is controlled to stop running, and a compressor fault code is output.

[0123] In the case where the ratio between the real-time bus voltage and the target bus voltage is less than the second threshold value or greater than the first threshold value, it indicates that the voltage fluctuation is too large, so before the adjustment of the target bus voltage, it is necessary to determine whether the state of the compressor is running normally, for example, the compressor suction and exhaust valve is not tightly closed, the compressor shaft is clamped, the compressor exhaust valve plate leaks, etc.

[0124] If it is determined that the bus voltage is caused by the abnormal running state of the compressor, the air conditioner compressor needs to be controlled to stop running to avoid further deterioration of the fault. At the same time, the application can also detect and analyze the cause of the compressor fault to display the fault code corresponding to the fault cause to the user, so as to facilitate the user to troubleshoot in time.

[0125] As another optional embodiment, as shown in Figure 2 If it is determined that the running state of the compressor is normal, it is necessary to further determine whether there is a compressor drive fault. Specifically, after detecting the running state of the air conditioner compressor, it can further include:

[0126] If it is determined that the running state is normal, a driving state of the compressor of the air conditioner is detected; if it is determined that the driving state is abnormal, the compressor of the air conditioner is controlled to stop running, and a driving fault code is output; if it is determined that the driving state is normal, a target bus voltage is adjusted.

[0127] Further, if it is determined that the running state is normal, the driving state of the compressor of the air conditioner is detected; if it is determined that the driving state is abnormal, the compressor of the air conditioner is controlled to stop running, and a driving fault code is output; if it is determined that the driving state is normal, a current bus voltage of the compressor of the air conditioner is obtained.

[0128] The current bus voltage is compared with the first bus voltage in size.

[0129] If the current bus voltage is greater than the first bus voltage, the compressor of the air conditioner is controlled to stop running, and a bus voltage control program fault is output.

[0130] Optionally, the driving state abnormality can be motor driving abnormality of the compressor, fault of a pressure regulating device, fault of a voltage sensor, short circuit of a motor winding, etc., which is not specifically limited by the present application.

[0131] After it is determined that the driving state is abnormal, the compressor is also required to be immediately stopped from continuing running, and a corresponding driving fault code is displayed to a user, so that the user can timely perform fault elimination.

[0132] The compressor bus voltage control method provided by the present application can exclude the influence of equipment faults by checking the running state and the driving state of the compressor before adjusting the target bus voltage, and can maximize the safety of the compressor during the bus voltage adjustment.

[0133] Figure 3 is a structural schematic diagram of the compressor bus voltage control device provided by the present application, as shown in Figure 3 The compressor bus voltage control device mainly includes a temperature acquisition unit 31, a temperature rise detection unit 32 and a running control unit 33, wherein:

[0134] The temperature acquisition unit 31 is configured to obtain a current outdoor temperature of the compressor of the air conditioner.

[0135] The temperature rise detection unit 32 is configured to obtain a first temperature rise of at least one target electronic component of the compressor of the air conditioner within a first preset time length.

[0136] The running control unit 33 is configured to determine, in a case where the first temperature rise is greater than a first threshold value, a bus voltage of the compressor of the air conditioner according to a preset standard bus voltage, the current outdoor temperature and a temperature rise threshold value range in which the first temperature rise is located, and adjust the bus voltage of the compressor of the air conditioner until the first temperature rise is reduced to be less than or equal to the first threshold value.

[0137] It should be noted that the compressor bus voltage control device provided by the embodiment of the present application can execute the compressor bus voltage control method of any of the above embodiments during actual operation, and the embodiment will not be described herein.

[0138] The present application also provides an air conditioner, mainly comprising an air conditioner body; the air conditioner body is provided with a processor and an air conditioner compressor; further comprising a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction is executed by the processor to execute the compressor bus voltage control method provided by any of the above embodiments.

[0139] The compressor bus voltage control device provided by the present application can adjust the bus voltage of the compressor differently according to the different temperature rise threshold ranges of the temperature rise amplitude when the temperature rise of the existing electronic components during the operation of the compressor is monitored, so as to make protective control, which can effectively protect and reduce the damage rate of the air conditioner caused by the excessive temperature rise of the key electronic components.

[0140] Figure 4 is the structural schematic diagram of the electronic equipment provided by the present application, as shown in Figure 4 The electronic equipment can include a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 complete mutual communication through the communication bus 440. The processor 410 can call the logical instructions in the memory 430 to execute the compressor bus voltage control method, which comprises: obtaining the current outdoor temperature of the air conditioner compressor; obtaining the first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time length; in the case that the first temperature rise is greater than a first threshold value, determining and adjusting the bus voltage of the air conditioner compressor according to the preset standard bus voltage, the current outdoor temperature and the temperature rise threshold range where the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0141] In addition, the logic instructions in the memory 430 described above can be implemented in the form of a software function unit and sold or used as an independent product, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0142] In another aspect, the present application also provides a computer program product, which comprises a computer program stored on a non-transitory computer readable storage medium, and the computer program comprises program instructions, when the program instructions are executed by a computer, the computer can execute the compressor bus voltage control method provided by the above-mentioned methods, and the method comprises: obtaining a current outdoor temperature of an air conditioner compressor; obtaining a first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time length; in the case that the first temperature rise is greater than a first threshold value, determining and adjusting the bus voltage of the air conditioner compressor according to a preset standard bus voltage, the current outdoor temperature and the temperature rise threshold value range where the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0143] In another aspect, the present application also provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the compressor bus voltage control method provided by the above-mentioned embodiments, and the method comprises: obtaining a current outdoor temperature of an air conditioner compressor; obtaining a first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time length; in the case that the first temperature rise is greater than a first threshold value, determining and adjusting the bus voltage of the air conditioner compressor according to a preset standard bus voltage, the current outdoor temperature and the temperature rise threshold value range where the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold value.

[0144] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0145] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0146] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling the voltage of a compressor bus, characterized in that, include: Obtain the current outdoor temperature of the air conditioner compressor; The first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time period is obtained; If the first temperature rise is greater than the first threshold, the bus voltage of the air conditioner compressor is determined and adjusted according to the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range in which the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold; the standard bus voltage is set based on the current outdoor temperature; After obtaining the current outdoor temperature of the air conditioner compressor, and before obtaining the first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time period, the method further includes: The first bus voltage is determined based on the standard bus voltage, the current outdoor temperature, and the first coefficient; The bus voltage of the air conditioner compressor is initially adjusted to the first bus voltage; The first bus voltage is positively correlated with the standard bus voltage and the first coefficient, and negatively correlated with the current outdoor temperature.

2. The compressor bus voltage control method according to claim 1, characterized in that, The step of determining and adjusting the bus voltage of the air conditioner compressor based on the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range at which the first temperature rise occurs includes: If the temperature rise threshold range of the first temperature rise is greater than the first threshold but less than the second threshold, then the second bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and the second coefficient. Adjust the bus voltage of the air conditioner compressor to the second bus voltage; The second bus voltage is positively correlated with both the standard bus voltage and the second coefficient, and negatively correlated with the current outdoor temperature, and the second coefficient is less than the first coefficient.

3. The compressor bus voltage control method according to claim 2, characterized in that, After adjusting the bus voltage of the air conditioner compressor to the second bus voltage, the method further includes iteratively performing the following steps until the first temperature rise decreases to less than or equal to the first threshold: After the air conditioner compressor has been running for a second preset period of time, the second temperature rise of the target electronic component within a first preset period of time is obtained; The second bus voltage is re-determined based on the standard bus voltage, the current outdoor temperature, and the second coefficient; Adjust the bus voltage of the air conditioner compressor to the newly determined second bus voltage.

4. The compressor bus voltage control method according to claim 2, characterized in that, The step of determining and adjusting the bus voltage of the air conditioner compressor based on the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range at which the first temperature rise occurs further includes: If the temperature rise threshold range of the first temperature rise is greater than or equal to the second threshold, then the third bus voltage is determined according to the preset standard bus voltage, the current outdoor temperature and the third coefficient. Adjust the bus voltage of the air conditioner compressor to the third bus voltage; The third bus voltage is positively correlated with both the standard bus voltage and the third coefficient, and negatively correlated with the current outdoor temperature, and the third coefficient is less than the second coefficient.

5. The compressor bus voltage control method according to claim 4, characterized in that, After adjusting the bus voltage of the air conditioner compressor to the third bus voltage, the method further includes iteratively performing the following steps until the first temperature rise decreases to less than or equal to the first threshold: After the air conditioner compressor has been running for a second preset period of time, the third temperature rise of the target electronic component within a first preset period of time is obtained; The third bus voltage is re-determined based on the standard bus voltage, the current outdoor temperature, and the third coefficient; Adjust the bus voltage of the air conditioner compressor to the newly determined third bus voltage.

6. The compressor bus voltage control method according to claim 2, characterized in that, If the first temperature rise is less than or equal to the first threshold, the method further includes: According to a preset frequency, the temperature rise of all target electronic components of the air conditioner compressor is periodically collected within a first preset time period; If any of the temperature rises exceeds the first threshold, the bus voltage of the air conditioner compressor is determined and adjusted based on the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range in which the first temperature rise is located, until the first temperature rise is reduced to less than or equal to the first threshold.

7. The compressor bus voltage control method according to claim 1, characterized in that, After initially adjusting the bus voltage of the air conditioner compressor to the first bus voltage, before determining and adjusting the bus voltage of the air conditioner compressor based on the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range at which the first temperature rise occurs, the process further includes: The operating status of the air conditioner compressor is determined based on its speed and phase current. If the operating status is determined to be abnormal, the air conditioner compressor is controlled to stop running, and a compressor fault code is output.

8. The compressor bus voltage control method according to claim 7, characterized in that, If the operating status is determined to be normal, then the drive status of the air conditioner compressor is detected; If the drive status is determined to be abnormal, the air conditioner compressor is controlled to stop running, and a drive fault code is output. If the drive state is determined to be normal, the current bus voltage of the air conditioner compressor is obtained; Compare the current bus voltage with the magnitude of the first bus voltage; If the current bus voltage is greater than the first bus voltage, the air conditioner compressor is controlled to stop running, and a bus voltage control program fault is output.

9. A compressor bus voltage control device, characterized in that, include: A temperature acquisition unit is used to acquire the current outdoor temperature of the air conditioner compressor; determine a first bus voltage based on a standard bus voltage, the current outdoor temperature, and a first coefficient; initially adjust the bus voltage of the air conditioner compressor to the first bus voltage; the first bus voltage is positively correlated with the standard bus voltage and the first coefficient, and negatively correlated with the current outdoor temperature; the standard bus voltage is set based on the current outdoor temperature; A temperature rise detection unit is used to obtain the first temperature rise of at least one target electronic component of the air conditioner compressor within a first preset time period; The operation control unit is used to determine and adjust the bus voltage of the air conditioner compressor based on the preset standard bus voltage, the current outdoor temperature, and the temperature rise threshold range in which the first temperature rise is located, when the first temperature rise is greater than the first threshold, until the first temperature rise is reduced to less than or equal to the first threshold.

10. An air conditioner, characterized in that, include: Air conditioner body; The air conditioner body includes a processor and an air conditioner compressor; it also includes a memory and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, it performs the compressor bus voltage control method as described in any one of claims 1-8.

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