Air Conditioner Electrical Control Module Heat Dissipation Control Method, Device, Air Conditioner and Storage Medium

Abstract

The present invention relates to the technical field of air conditioners, and discloses a heat dissipation control method, device, air conditioner and storage medium for an air conditioner electric control module, wherein the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger are obtained; a first temperature difference is determined according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger; when the first temperature difference is greater than a first preset temperature, the cold storage heat exchanger is controlled to release cold energy for cold energy circulation, so as to perform heat dissipation treatment on the electric control module. The present invention sets a cold storage heat exchanger to store cold energy, and when the first temperature difference between the condenser outlet temperature and the internal temperature of the cold storage heat exchanger is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy, and the electric control module is heat-dissipated through cold energy circulation, so as to ensure that the temperature of the electric control module is kept within a safe range even under high temperature conditions, thereby improving the heat dissipation effect of the electric control module, thereby increasing the reliability of the whole machine and the service life of the electric control module.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a heat dissipation control method and device for an air conditioner electric control module, an air conditioner and a storage medium. Background Art

[0002] In the use scenario of prefabricated houses, the outdoor temperature is usually higher during the day, and because the prefabricated houses are poorly insulated, they may be directly exposed to the sun during the day, and the indoor temperature of the prefabricated houses is often much higher than the outdoor temperature. The existing cooling solution for the electric control module mainly uses outdoor air to cool the condenser and then cool the electric control module.

[0003] However, in the summer when the outdoor air temperature is high, the outdoor air first cools the condenser and the air temperature can reach about 60°C. At this time, the cooling effect of cooling the electronic control module is poor, and the temperature of the electronic control module may be too high, causing shutdown and affecting the reliability of the entire machine.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to propose a method, device, air conditioner and storage medium for controlling the heat dissipation of an air-conditioning electronic control module, aiming to solve the technical problems in the prior art that the cooling effect of cooling the electronic control module by outdoor air is poor, the temperature of the electronic control module may be too high, and the reliability of the whole machine may be affected.

[0006] To achieve the above object, the present invention provides a heat dissipation control method for an air conditioner electric control module, the heat dissipation control method for an air conditioner electric control module comprising the following steps:

[0007] Obtain the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger;

[0008] Determining a first temperature difference according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger;

[0009] When the first temperature difference is greater than a first preset temperature, the cold storage heat exchanger is controlled to release cold energy for cold energy circulation, so as to perform heat dissipation treatment on the electric control module.

[0010] Optionally, before obtaining the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger, the method further includes:

[0011] Acquire current time information, and determine the current moment according to the current time information;

[0012] Determining whether the current time is within a preset time range;

[0013] When the current time is within a preset time range, the cold storage heat exchanger is controlled to start storing cold.

[0014] Optionally, the determining whether the current moment is within a preset time range further includes:

[0015] When the current time is not within the preset time range, obtaining the outdoor ambient temperature;

[0016] When the outdoor ambient temperature is greater than or equal to a second preset temperature, the cold storage heat exchanger is controlled to start storing cold.

[0017] Optionally, when the first temperature difference is greater than a first preset temperature, controlling the cold storage heat exchanger to release cold energy for cold energy circulation includes:

[0018] When the first temperature difference is greater than a first preset temperature, turning on the water pump;

[0019] The water pump is controlled to operate in a preset gear mode to control the cold storage heat exchanger to release cold energy for cold energy circulation.

[0020] Optionally, after controlling the cold storage heat exchanger to release cold energy for cold energy circulation when the first temperature difference is greater than a first preset temperature, the method further includes:

[0021] Acquiring an electric control module temperature of the electric control module;

[0022] A target control strategy is determined according to the temperature of the electric control module, and the state of the cooling cycle is adjusted according to the target control strategy.

[0023] Optionally, determining a target control strategy according to the temperature of the electric control module, and adjusting the state of the cooling cycle according to the target control strategy, includes:

[0024] Determining a second temperature difference according to the temperature of the electric control module and a preset temperature limit value;

[0025] comparing the second temperature difference with a preset temperature constant;

[0026] Determining a target gear mode according to the comparison result, and determining a target control strategy according to the target gear mode;

[0027] According to the target control strategy, the water pump is controlled to switch to the target gear mode to operate, so as to adjust the state of the cooling cycle.

[0028] Optionally, after controlling the water pump to switch to the target gear mode, the method further includes:

[0029] Detecting the running time of the water pump;

[0030] When the running time reaches the preset time, return to the step of obtaining the electric control module temperature of the electric control module.

[0031] In addition, to achieve the above-mentioned purpose, the present invention also proposes a heat dissipation control device for an air-conditioning electric control module, the heat dissipation control device for an air-conditioning electric control module comprising:

[0032] A temperature acquisition module, used to acquire the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger;

[0033] A temperature difference module, used for determining a first temperature difference according to the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger;

[0034] The cooling control module is used to control the cold storage heat exchanger to release cooling energy for cooling circulation when the first temperature difference is greater than a first preset temperature, so as to dissipate heat for the electronic control module.

[0035] In addition, to achieve the above-mentioned purpose, the present invention also proposes an air conditioner, which includes: a memory, a processor, and an air conditioning electronic control module heat dissipation control program stored in the memory and executable on the processor, and the air conditioning electronic control module heat dissipation control program, when executed by the processor, implements the steps of the air conditioning electronic control module heat dissipation control method as described above.

[0036] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which is stored an air-conditioning electronic control module heat dissipation control program, and when the air-conditioning electronic control module heat dissipation control program is executed by a processor, the steps of the air-conditioning electronic control module heat dissipation control method as described above are implemented.

[0037] The heat dissipation control method of the air-conditioning electronic control module proposed in the present invention obtains the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger; determines a first temperature difference according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger; when the first temperature difference is greater than the first preset temperature, controls the cold storage heat exchanger to release cold energy for cold energy circulation, so as to perform heat dissipation treatment on the electronic control module. The present invention sets the cold storage heat exchanger to store cold energy, and when the first temperature difference between the condenser outlet temperature and the internal temperature of the cold storage heat exchanger is greater than the first preset temperature, controls the cold storage heat exchanger to release cold energy, and performs heat dissipation treatment on the electronic control module through cold energy circulation, so as to ensure that the temperature of the electronic control module is kept within a safe range even under high temperature conditions, thereby improving the heat dissipation effect of the electronic control module, thereby increasing the reliability of the whole machine and the service life of the electronic control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the structure of an air conditioner in a hardware operating environment involved in an embodiment of the present invention;

[0039] Figure 2 A schematic flow chart of a first embodiment of a heat dissipation control method for an air-conditioning electronic control module according to the present invention;

[0040] Figure 3 A system schematic diagram of an embodiment of a heat dissipation control method for an air-conditioning electric control module of the present invention;

[0041] Figure 4 A schematic diagram of a cooling cycle according to an embodiment of a heat dissipation control method for an air-conditioning electronic control module of the present invention;

[0042] Figure 5 A schematic flow chart of a second embodiment of a heat dissipation control method for an air-conditioning electric control module according to the present invention;

[0043] Figure 6 A schematic flow chart of a third embodiment of a heat dissipation control method for an air-conditioning electronic control module according to the present invention;

[0044] Figure 7 A control flow chart of an embodiment of a heat dissipation control method for an air-conditioning electric control module of the present invention;

[0045] Figure 8 A system schematic diagram of another embodiment of the heat dissipation control method of the air-conditioning electronic control module of the present invention;

[0046] Fig. 9 A schematic diagram of a cooling cycle of another embodiment of a heat dissipation control method for an air-conditioning electronic control module of the present invention;

[0047] Fig.10 It is a functional module diagram of the first embodiment of the heat dissipation control device for the air conditioner electronic control module of the present invention.

[0048] Description of Figure Numbers:

[0049] Label name Label name 1 Evaporator 2 compressor 3 Condenser 4 Subcooling heat exchanger 5 Electronic control module 6 Water Pump 7 Cold storage heat exchanger 8 Stop valve 9 Capillary 10 Three-way valve

[0050] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0052] Reference Figure 1 , Figure 1 The figure is a schematic diagram of the air conditioner structure of the hardware operating environment involved in the embodiment of the present invention.

[0053] like Figure 1As shown, the air conditioner may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a button, and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0054] Those skilled in the art will understand that Figure 1 The equipment structure shown in the figure does not constitute a limitation on the air conditioner, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0055] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a heat dissipation control program of an air-conditioning electric control module.

[0056] exist Figure 1 In the air conditioner shown, the network interface 1004 is mainly used to connect to the external network and communicate data with other network devices; the user interface 1003 is mainly used to connect to the user device and communicate data with the user device; the device of the present invention calls the air conditioning electronic control module heat dissipation control program stored in the memory 1005 through the processor 1001, and executes the air conditioning electronic control module heat dissipation control method provided in the embodiment of the present invention.

[0057] Based on the above hardware structure, an embodiment of a heat dissipation control method for an air conditioner electric control module of the present invention is proposed.

[0058] Reference Figure 2 , Figure 2 It is a flow chart of the first embodiment of the heat dissipation control method of the air conditioner electronic control module of the present invention.

[0059] In a first embodiment, the heat dissipation control method of the air conditioner electric control module includes the following steps:

[0060] Step S10, obtaining the condenser outlet temperature and the internal temperature of the cold storage heat exchanger.

[0061] It should be noted that the executor of this embodiment may be the controller of the air conditioner, or other devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment, the controller of the air conditioner is used as an example for description.

[0062] It should be understood that when the refrigeration air conditioner is running, the electronic control module needs to be kept below the specified temperature to ensure the life of the electronic control module and the reliability of the whole machine operation. Especially for the electronic control module of the frequency converter, the temperature is high and better heat dissipation is required. The current solution is generally to place the electronic control heat sink of the electronic control module after the condenser, and the outdoor air passes through the condenser to cool the electronic control heat sink. When the outdoor temperature is low, this cooling method can fully meet the requirements, but when the outdoor temperature is high, the temperature of the outdoor air after passing through the condenser is high. At this time, the cooling effect of cooling the electronic control heat sink is poor, resulting in excessively high electronic control temperature, and temperature protection causing the whole machine to shut down. A small number of refrigerant rings are used to dissipate heat for the electronic control module, but the cost of refrigerant ring heat dissipation is high. Although it can solve the heat dissipation problem of the electronic control module, it is not conducive to the cooling effect of high-temperature refrigeration conditions for the use scenario of board room air conditioners.

[0063] In this solution, a cold storage heat exchanger is set up indoors. After the refrigerant of the cold storage heat exchanger cools the condenser outlet, the electronic control module is cooled through the electronic control heat sink. This can effectively improve the cooling effect of the air conditioner under high temperature conditions and ensure that the temperature of the electronic control module is below the limit value.

[0064] In the specific implementation, Figure 3 As shown, Figure 3 It is a system schematic diagram, including: evaporator 1, compressor 2, condenser 3, subcooling heat exchanger 4, electronic control module 5, water pump 6, cold storage heat exchanger 7, stop valve 8 and capillary tube 9. Among them, the cold storage heat exchanger 7, stop valve 8 and evaporator 1 can be arranged indoors, the compressor 2, condenser 3, subcooling heat exchanger 4, electronic control module and water pump 6 can be arranged outdoors, and other arrangements are also possible, which is not limited in this embodiment.

[0065] In the specific implementation, Figure 4 As shown, Figure 4 The schematic diagram of the cooling cycle is shown in Figure 2. The cooling medium can be used in the circulation loop according to Figure 4 The air conditioner is operated according to the normal refrigeration system when the stop valve 8 is open and the water pump 6 is closed. When the stop valve 8 is closed, the cold storage heat exchanger 7 is controlled to start cold storage. When the water pump 6 is turned on, the cold storage heat exchanger 7 is controlled to release cold. The refrigerant flows to the electronic control module 5 after passing through the supercooling heat exchanger 4, and the electronic control module 5 is heat-dissipated to achieve the purpose of heat dissipation of the electronic control module and improve the refrigeration effect under high temperature conditions.

[0066] It is understandable that after the cold storage heat exchanger is controlled to start and cold storage begins, the preset time t 1 Then, the condenser outlet temperature T of the condenser is obtained. CO The internal temperature T of the cold storage heat exchanger S Among them, temperature sensors can be respectively arranged at the outlet of the condenser and inside the cold storage heat exchanger, and the condenser outlet temperature and the internal temperature of the cold storage heat exchanger can be respectively detected by the temperature sensors. Other detection methods can also be used, which are not limited in this embodiment.

[0067] Step S20, determining a first temperature difference according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger.

[0068] It should be understood that the condenser outlet temperature T CO and the internal T of the cold storage heat exchanger S Determine the first temperature difference ΔT 1 , where ΔT 1 =T CO -T S .

[0069] Step S30, when the first temperature difference is greater than a first preset temperature, controlling the cold storage heat exchanger to release cold energy for cold energy circulation to dissipate heat for the electronic control module.

[0070] It is understandable that if the cold storage heat exchanger does not store enough cold, the temperature difference between the coolant and the supercooling heat exchanger is small, then releasing the cold energy for cold energy circulation may result in poor cooling effect and be detrimental to the indoor cooling effect. Therefore, it is necessary to adjust the temperature according to the first temperature difference ΔT. 1 Determine whether to control the cold storage heat exchanger to release cold energy.

[0071] It should be understood that when determining the first temperature difference ΔT 1 After that, the first temperature difference ΔT 1 With the first preset temperature C 2 For comparison, C 2 It is a set value, and this embodiment does not limit its specific value.

[0072] At the first temperature difference ΔT 1 Greater than the first preset temperature C 2 When , it means that the cold storage heat exchanger has sufficient cold storage, and the cold storage heat exchanger can be controlled to release cold; at the first temperature difference ΔT 1 Less than or equal to the first preset temperature C 2 It means that the cold storage heat exchanger has insufficient cold storage and the cold storage heat exchanger is not controlled to release cold.

[0073] Furthermore, in order to more conveniently control the cold energy release of the cold storage heat exchanger, when the first temperature difference is greater than the first preset temperature, controlling the cold storage heat exchanger to release cold energy for cold energy circulation includes:

[0074] When the first temperature difference is greater than a first preset temperature, the water pump is turned on; the water pump is controlled to operate in a preset gear mode to control the cold storage heat exchanger to release cold energy for cold energy circulation.

[0075] It should be understood that in this embodiment, a water pump is provided to control the release of cold from the cold storage heat exchanger. When the water pump is turned on, the cold storage heat exchanger releases cold, and when the water pump is turned off, the cold storage heat exchanger does not release cold. In addition, the water pump can also be set with multiple gear modes, and the cold released by the cold storage heat exchanger can be controlled by controlling the water pump to switch to different gear modes.

[0076] It can be understood that the preset gear mode can be set to a first gear mode. When the first temperature difference is greater than the first preset temperature, the water pump is turned on and controlled to operate in the first gear mode to control the cold storage heat exchanger to be in a cold release mode to release cold for cold circulation.

[0077] It should be understood that since the electronic control module is in the cold storage and heat exchange circuit, after the cold storage and heat exchanger releases the cold energy for cold circulation, the cold energy can circulate in the cold storage and heat exchange circuit to the electronic control module for heat dissipation, thereby reducing the temperature of the electronic control module and improving the heat dissipation effect of the electronic control module.

[0078] It is understandable that when the outdoor temperature is high, the compressor exhaust temperature increases, the heat exchange temperature difference between the refrigerant and the air in the condenser decreases, the heat exchange amount decreases, and the refrigerant will not be sufficiently subcooled at the condenser outlet. The liquid phase ratio of the refrigerant after throttling decreases, which affects the indoor cooling effect. This circulation loop first stores cold energy in the cold storage heat exchanger when the cooling capacity demand is relatively low, and releases the cold energy to the condenser outlet under high temperature conditions to improve the cooling effect under high temperature conditions.

[0079] It can be understood that in the cold storage and heat exchange circuit, the refrigerant cools the electronic control module after cooling the condenser outlet. By utilizing the stored cold energy, it can be ensured that the temperature of the electronic control module can be maintained within a safe range even under high temperature conditions, thereby increasing the reliability of the entire machine and the service life of the electronic control module.

[0080] In this embodiment, the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger are obtained; a first temperature difference is determined according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger; when the first temperature difference is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy for cold energy circulation, so as to dissipate heat for the electric control module. In this embodiment, the cold storage heat exchanger is set to store cold energy, and when the first temperature difference between the condenser outlet temperature and the internal temperature of the cold storage heat exchanger is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy, and the electric control module is dissipated through cold energy circulation, so as to ensure that the temperature of the electric control module is kept within a safe range even under high temperature conditions, thereby improving the heat dissipation effect of the electric control module, thereby increasing the reliability of the whole machine and the service life of the electric control module.

[0081] In one embodiment, if Figure 5 As shown, based on the first embodiment, a second embodiment of the heat dissipation control method of the air conditioner electric control module of the present invention is proposed. Before the step S10, it also includes:

[0082] Step S01, obtaining current time information, and determining the current moment according to the current time information.

[0083] It should be understood that the present embodiment can control the cold storage heat exchanger according to the time when the air conditioner is turned on and the outdoor ambient temperature. Before the air conditioner is turned on and the compressor is started, the cold storage heat exchanger is in a closed state.

[0084] It is understandable that the current time information can be obtained, and the current moment can be determined according to the current time information, and whether to control the cold storage heat exchanger to start cold storage can be determined according to the current moment. The current time information can be obtained from a network server, from a locally set clock module, or through other methods, which is not limited in this embodiment.

[0085] Step S02, determining whether the current time is within a preset time range.

[0086] It should be understood that in this solution, a cold storage heat exchanger is used to store cold, so cold storage can be used during the night when electricity prices are lower, saving electricity during the day when the outdoor ambient temperature rises and electricity prices are higher, thereby increasing the economy of air conditioning use.

[0087] It is understandable that a preset time range, such as 22:00-6:00, can be pre-set, and after determining the current time, it can be determined whether the current time is within the preset time range. In addition to the above time range, the preset time range can also be set to other time ranges, such as 23:00-5:00, 22:00-5:00, etc., which is not limited in this embodiment.

[0088] Step S03, when the current time is within a preset time range, controlling the cold storage heat exchanger to start cold storage.

[0089] It should be understood that when the current moment is within the preset time range, it means that it is a time period with lower electricity prices at night, and the cold storage heat exchanger can be controlled to start, and enter the cold storage mode to start cold storage. Among them, the cold storage heat exchanger can be controlled to start cold storage by controlling the shutoff valve to close. This step can be specifically: when the current moment is within the preset time range, the shutoff valve is controlled to close to control the cold storage heat exchanger to start cold storage.

[0090] It can be understood that in this embodiment, the mode of the cold storage heat exchanger can be controlled by controlling the stop valve. When the stop valve is closed, the cold storage heat exchanger is in the cold storage mode, and when the stop valve is opened, the cold storage heat exchanger is not in the cold storage mode.

[0091] Furthermore, in some cases, although the current time period is not the time period with low nighttime electricity prices, the temperature of the external environment is high. In order to avoid the problem of excessive temperature of the electric control module, after determining whether the current time is within the preset time range, the following is further included:

[0092] When the current time is not within the preset time range, the outdoor ambient temperature is acquired; when the outdoor ambient temperature is greater than or equal to a second preset temperature, the cold storage heat exchanger is controlled to start cold storage.

[0093] It should be understood that when the current time is not within the preset time range, the outdoor ambient temperature T 0 , and the outdoor ambient temperature T 0 With the second preset temperature C 1 For comparison, at the outdoor ambient temperature T 0 Greater than or equal to the second preset temperature C 1 When the outdoor ambient temperature is T, the stop valve is closed to control the cold storage heat exchanger to start cold storage. 0 Less than the second preset temperature C 1 When the shut-off valve is controlled to open, the system operates in normal cooling mode.

[0094] It is understandable that the second preset temperature C 1 The outdoor temperature T can be detected by the temperature sensor installed outdoors. 0 , can also be obtained through other methods, which is not limited in this embodiment.

[0095] In the specific implementation, the following three examples are used for illustration: 1. Assuming that the current time is 1:00, and the preset time range is 22:00-6:00, it means that this is the time period when the electricity price is low at night, and the cold storage heat exchanger is controlled to start cold storage. 2. Assuming that the current time is 12:00, the preset time range is 22:00-6:00, the second preset temperature is 30°C, and the outdoor ambient temperature is 32°C, it means that although it is not in the time period when the electricity price is low at night, the outdoor ambient temperature is high, and the cold storage heat exchanger is controlled to start cold storage. 3. Assuming that the current time is 12:00, the preset time range is 22:00-6:00, the second preset temperature is 30°C, and the outdoor ambient temperature is 25°C, it means that this is not in the time period when the electricity price is low at night, and the outdoor ambient temperature is low, the stop valve is controlled to open, and the system operates in normal cooling mode, and there is no need to control the cold storage heat exchanger to store cold.

[0096] In this embodiment, the current time information is obtained, and the current moment is determined according to the current time information; it is determined whether the current moment is within a preset time range; when the current moment is within the preset time range, the cold storage heat exchanger is controlled to start storing cold, and when the current moment is not within the preset time range, the outdoor ambient temperature is obtained; when the outdoor ambient temperature is greater than or equal to a second preset temperature, the cold storage heat exchanger is controlled to start storing cold, so that the cold storage heat exchanger can be controlled to start storing cold under appropriate circumstances, thereby saving electricity costs and increasing the economy during the use of the air conditioner.

[0097] In one embodiment, if Figure 6 As shown, a third embodiment of the heat dissipation control method of the air conditioner electric control module of the present invention is proposed based on the first embodiment or the second embodiment. In this embodiment, the first embodiment is described, and after the step S30, it also includes:

[0098] Step S40, obtaining the electric control module temperature of the electric control module.

[0099] It should be understood that after the water pump is turned on to control the cold storage heat exchanger to release cold energy for cold energy circulation, the electric control module temperature T E A temperature sensor may be provided at the electric control module to detect the temperature of the electric control module by the temperature sensor. Other detection methods may also be used, which are not limited in this embodiment.

[0100] Step S50, determining a target control strategy according to the temperature of the electric control module, and adjusting the state of the cooling cycle according to the target control strategy.

[0101] It should be understood that after determining the current temperature of the electric control module, in order to achieve better heat dissipation and energy-saving effects, while avoiding high temperature of the electric control module and avoiding energy waste, the target control strategy can be determined according to the temperature of the electric control module, and the state of the cooling cycle can be adjusted according to the target control strategy.

[0102] Furthermore, in order to more accurately determine the target control strategy and obtain a better control effect, the step S50 includes:

[0103] Determine a second temperature difference based on the temperature of the electronic control module and a preset temperature limit value; compare the second temperature difference with a preset temperature constant; determine a target gear mode based on the comparison result, and determine a target control strategy based on the target gear mode; control the water pump to switch to the target gear mode according to the target control strategy to adjust the state of the cooling cycle.

[0104] It should be understood that the temperature T E and preset temperature limit value T limit Determine the second temperature difference ΔT 2 , ΔT 2 =T limit -T E , where T limit is the set value. In this embodiment, T limit There is no limit on the specific value of C. 3 , C 4 , C 5 , C 6 etc., and the second temperature difference ΔT 2 With each preset temperature constant C 3 , C 4 , C 5 , C 6 A comparison is made, and a target gear mode is determined according to the comparison result, and then a target control strategy is determined according to the target gear mode, and the water pump gear is adjusted according to the target control strategy to control the water pump to switch to the target gear mode for operation.

[0105] In a specific implementation, five gear modes can be set for the water pump, and the power is gradually increased from the first gear mode to the fifth gear mode. 2 >C 6 When the fifth gear mode is used as the target gear mode; 5 <ΔT 2 <C 6 When the fourth gear mode is used as the target gear mode; 4 <ΔT 2 <C 5 When the third gear mode is used as the target gear mode;3 <ΔT 2 <C 4 When ΔT 2 <C 3 , the first gear mode is used as the target gear mode.

[0106] Furthermore, in order to adjust the gear mode of the water pump more conveniently and timely, after controlling the water pump to switch to the target gear mode, the method further includes:

[0107] Detecting the running time of the water pump; when the running time reaches a preset time, returning to execute the step of obtaining the electric control module temperature of the electric control module.

[0108] It should be understood that the 2 The temperature of the electric control module is detected once, and the above steps are repeated until the machine is shut down, so as to achieve a better control effect on the state of the cooling cycle. Therefore, the running time of the water pump can be detected. When the running time reaches the preset time, the step of obtaining the temperature of the electric control module of the electric control module is returned to execute, and the running time is reset to zero and the timing is restarted. Among them, the preset time is a set value, and this embodiment does not limit its specific value.

[0109] In the specific implementation, Figure 7 As shown, Figure 7 For the control flow chart, the electronic control module can be an electronic control box. Through the control process of this solution, when the cooling capacity demand is relatively low, the cold energy can be first stored in the cold storage heat exchanger, and then released to the condenser outlet under high temperature conditions to improve the cooling effect under high temperature conditions. In addition, by utilizing the stored cold energy, it can be ensured that even under high temperature conditions, the temperature of the electronic control module is kept within a safe range, thereby increasing the reliability of the entire machine and the service life of the electronic control module.

[0110] In this embodiment, the electric control module temperature of the electric control module is obtained, the target control strategy is determined according to the electric control module temperature, and the state of the cooling cycle is adjusted according to the target control strategy, so as to achieve better heat dissipation and energy saving effects, avoid high temperature of the electric control module and avoid energy waste.

[0111] In another embodiment, in order to more accurately determine the target control strategy and obtain a better control effect, the step S50 further includes:

[0112] When the temperature of the electric control module is lower than the third preset temperature, the preset first control strategy is used as the target control strategy; when the temperature of the electric control module is greater than or equal to the third preset temperature and lower than the fourth preset temperature, the preset second control strategy is used as the target control strategy; when the temperature of the electric control module is greater than or equal to the fourth preset temperature, the preset third control strategy is used as the target control strategy; the connection state of the three-way valve is adjusted according to the target control strategy to adjust the state of the cooling cycle.

[0113] In the specific implementation, in addition to Figure 3 In addition to the system diagram shown in Figure 8 As shown, Figure 8 This is a system schematic diagram of another embodiment, including: an evaporator 1, a compressor 2, a condenser 3, a subcooling heat exchanger 4, an electronic control module 5, a water pump 6, a cold storage heat exchanger 7, a stop valve 8, a capillary tube 9 and a three-way valve 10. Among them, the cold storage heat exchanger 7, the stop valve 8 and the evaporator 1 can be arranged indoors, and the compressor 2, the condenser 3, the subcooling heat exchanger 4, the electronic control module and the water pump 6 can be arranged outdoors, and other arrangements are also possible, which are not limited in this embodiment.

[0114] It should be understood that the three-way valve 10 includes three interfaces a, b, and c, which can be divided into three interconnection states, namely: State 1, three-way valves a and b are interconnected, and a and c are disconnected. At this time, no cooling medium is required to maintain normal operation, and the indoor cooling effect can be guaranteed. State 2, three-way valves a, b, and c are all interconnected to keep the temperature of the electronic control module within the standard and the indoor cooling effect. State 3, three-way valves a and c are interconnected, and a and b are disconnected. All the coolants in the cold storage circulation loop are used to cool the electronic control module, ensuring that the temperature of the electronic control module is below the limit value, and ensuring the normal operation of the air conditioning electronic control module.

[0115] In the specific implementation, Fig. 9 The schematic diagram of the cooling cycle of another embodiment is shown in FIG. Figure 4 circulates along the circulation route in. When the stop valve 8 is open and the water pump 6 is closed, the air conditioner operates according to the normal refrigeration system; when the stop valve 8 is closed, the cold storage heat exchanger 7 is controlled to start storing cold; when the water pump 6 is turned on, the cold storage heat exchanger 7 is controlled to release cold, and the cold circulation state is controlled by the three-way valve 10. When the electronic control module needs to dissipate heat, the refrigerant flows to the electronic control module 5 after passing through the supercooling heat exchanger 4, and the electronic control module 5 is heat-dissipated to achieve the purpose of dissipating heat for the electronic control module and improve the refrigeration effect under high temperature conditions. When the electronic control module does not need to dissipate heat, it is not necessary to control the refrigerant to flow to the electronic control module to maintain normal operation.

[0116] It should be understood that after detecting the temperature of the electric control module, the temperature of the electric control module can be compared with the third preset temperature and the fourth preset temperature respectively, wherein the third preset temperature and the fourth preset temperature are set values, and the third preset temperature can be set to C 3 , set the fourth preset temperature to C 4 , this embodiment does not limit its specific value.

[0117] It can be understood that when the temperature of the electric control module is lower than the third preset temperature, that is, T E <C 3 When the temperature of the electric control module is low, it can maintain normal operation without cooling with a coolant, and at the same time ensure the indoor cooling effect. At this time, the first control strategy can be used as the target control strategy, wherein the first control strategy is to adjust the three-way valve to state 1. When the temperature of the electric control module is greater than or equal to the third preset temperature and less than the fourth preset temperature, that is, C 3 ≤T E <C 4 When T E With C 3 , C 4 The relationship between the b and c pipelines is used to adjust the refrigerant flow rate of the b and c pipelines, while ensuring that the temperature of the electric control module does not exceed the standard and the indoor cooling effect is ensured. When the temperature of the electric control module is greater than or equal to the fourth preset temperature, that is, T E >C 4 When the temperature of the electronic control module is high, all the coolant in the cold storage circulation loop is used to cool the electronic control module to ensure that the temperature of the electronic control module is below the limit value, thereby ensuring the normal operation of the air conditioning electronic control module. Among them, the third control strategy is to adjust the three-way valve to state 3.

[0118] And, every t 2 Detect the temperature of the electronic control module and compare it with C 2 , C 3 The values ​​are compared and the three-way valve position is adjusted accordingly.

[0119] In this embodiment, when the temperature of the electric control module is lower than the third preset temperature, the preset first control strategy is used as the target control strategy; when the temperature of the electric control module is greater than or equal to the third preset temperature and lower than the fourth preset temperature, the preset second control strategy is used as the target control strategy; when the temperature of the electric control module is greater than or equal to the fourth preset temperature, the preset third control strategy is used as the target control strategy; according to the target control strategy, the connection state of the three-way valve is adjusted to adjust the state of the cooling cycle, thereby achieving better heat dissipation and energy-saving effects, avoiding high temperature of the electric control module and avoiding energy waste.

[0120] In addition, an embodiment of the present invention further proposes a storage medium, on which is stored an air conditioning electronic control module heat dissipation control program, which, when executed by a processor, implements the steps of the air conditioning electronic control module heat dissipation control method as described above.

[0121] Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0122] In addition, refer to Fig.10 The embodiment of the present invention further provides a heat dissipation control device for an air-conditioning electric control module, the heat dissipation control device for an air-conditioning electric control module comprising:

[0123] The temperature acquisition module 10 is used to acquire the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger.

[0124] The temperature difference module 20 is used to determine a first temperature difference according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger.

[0125] The cooling control module 30 is used to control the cold storage heat exchanger to release cooling energy for cooling circulation when the first temperature difference is greater than a first preset temperature, so as to dissipate heat for the electronic control module.

[0126] In this embodiment, the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger are obtained; a first temperature difference is determined according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger; when the first temperature difference is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy for cold energy circulation, so as to dissipate heat for the electric control module. In this embodiment, the cold storage heat exchanger is set to store cold energy, and when the first temperature difference between the condenser outlet temperature and the internal temperature of the cold storage heat exchanger is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy, and the electric control module is dissipated through cold energy circulation, so as to ensure that the temperature of the electric control module is kept within a safe range even under high temperature conditions, thereby improving the heat dissipation effect of the electric control module, thereby increasing the reliability of the whole machine and the service life of the electric control module.

[0127] In one embodiment, the air conditioning electronic control module heat dissipation control device also includes a cold storage control module, which is used to obtain current time information and determine the current time based on the current time information; determine whether the current time is within a preset time range; when the current time is within the preset time range, control the cold storage heat exchanger to start storing cold.

[0128] In one embodiment, the cold storage control module is further used to obtain the outdoor ambient temperature when the current time is not within a preset time range; and control the cold storage heat exchanger to start cold storage when the outdoor ambient temperature is greater than or equal to a second preset temperature.

[0129] In one embodiment, the cooling control module 30 is further used to start the water pump when the first temperature difference is greater than a first preset temperature; control the water pump to operate in a preset gear mode to control the cold storage heat exchanger to release cold for cooling circulation.

[0130] In one embodiment, the air conditioning electronic control module heat dissipation control device also includes a cooling capacity adjustment module for obtaining the electronic control module temperature of the electronic control module; determining a target control strategy based on the electronic control module temperature, and adjusting the state of the cooling capacity cycle based on the target control strategy.

[0131] In one embodiment, the cooling capacity adjustment module is also used to determine a second temperature difference based on the temperature of the electronic control module and a preset temperature limit value; compare the second temperature difference with a preset temperature constant; determine a target gear mode based on the comparison result, and determine a target control strategy based on the target gear mode; control the water pump to switch to the target gear mode according to the target control strategy to adjust the state of the cooling cycle.

[0132] In one embodiment, the cooling capacity adjustment module is further used to detect the running time of the water pump; when the running time reaches a preset time, the step of obtaining the electric control module temperature of the electric control module is returned to execute.

[0133] Other embodiments or specific implementation methods of the heat dissipation control device for the air-conditioning electric control module of the present invention can refer to the above-mentioned method embodiments, which will not be described in detail here.

[0134] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0135] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0136] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a computer-readable storage medium (such as ROM / RAM, disk, CD) as described above, including a number of instructions for enabling an intelligent device (which can be a mobile phone, computer, air conditioner, or network air conditioner, etc.) to execute the methods described in each embodiment of the present invention.

[0137] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat dissipation control method for an air conditioner electronic control module, characterized in that: The heat dissipation control method of the air conditioner electric control module comprises the following steps: Obtain the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger; Determining a first temperature difference according to the condenser outlet temperature and the internal temperature of the cold storage heat exchanger; and When the first temperature difference is greater than the first preset temperature, the cold storage heat exchanger is controlled to release cold energy for cold energy circulation to perform heat dissipation treatment on the electronic control module, wherein the cold storage heat exchanger and the subcooling heat exchanger are arranged on the refrigerant circulation flow path and are located between the evaporator and the condenser, the subcooling heat exchanger and the cold storage heat exchanger both have a first heat exchange branch and a second heat exchange branch, the inlet of the first heat exchange branch of the subcooling heat exchanger is connected to the outlet of the condenser, the outlet of the first heat exchange branch of the subcooling heat exchanger is respectively connected to the inlet of the second heat exchange branch of the cold storage heat exchanger and the inlet of the evaporator, the inlet of the second heat exchange branch of the subcooling heat exchanger is connected to the outlet of the first heat exchange branch of the cold storage heat exchanger, the outlet of the second heat exchange branch of the cold storage heat exchanger is connected to the inlet of the evaporator, and the outlet of the second heat exchange branch of the subcooling heat exchanger is connected to the inlet of the first heat exchange branch of the cold storage heat exchanger through a connecting flow path.

2. The heat dissipation control method of the air conditioner electric control module according to claim 1, characterized in that: Before obtaining the condenser outlet temperature and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger, the method further includes: Acquire current time information, and determine the current moment according to the current time information; Determining whether the current time is within a preset time range; and When the current time is within a preset time range, the cold storage heat exchanger is controlled to start storing cold.

3. The heat dissipation control method of the air conditioner electric control module according to claim 2, characterized in that: After determining whether the current time is within the preset time range, the method further includes: When the current time is not within the preset time range, obtaining the outdoor ambient temperature; and When the outdoor ambient temperature is greater than or equal to a second preset temperature, the cold storage heat exchanger is controlled to start storing cold.

4. The heat dissipation control method of the air conditioner electric control module according to claim 1, characterized in that: When the first temperature difference is greater than a first preset temperature, controlling the cold storage heat exchanger to release cold energy for cold energy circulation includes: When the first temperature difference is greater than a first preset temperature, turning on the water pump; and The water pump is controlled to operate in a preset gear mode to control the cold storage heat exchanger to release cold energy for cold energy circulation.

5. The heat dissipation control method for an air-conditioning electronic control module according to any one of claims 1 to 4, characterized in that: After controlling the cold storage heat exchanger to release cold energy for cold energy circulation when the first temperature difference is greater than the first preset temperature, the method further includes: acquiring an electric control module temperature of the electric control module; and A target control strategy is determined according to the temperature of the electric control module, and the state of the cooling cycle is adjusted according to the target control strategy.

6. The heat dissipation control method of the air conditioner electric control module according to claim 5, characterized in that: Determining a target control strategy according to the temperature of the electric control module, and adjusting the state of the cooling cycle according to the target control strategy, includes: Determining a second temperature difference according to the temperature of the electric control module and a preset temperature limit value; comparing the second temperature difference with a preset temperature constant; determining a target gear mode according to the comparison result, and determining a target control strategy according to the target gear mode; and According to the target control strategy, the water pump is controlled to switch to the target gear mode to operate, so as to adjust the state of the cooling cycle.

7. The heat dissipation control method of the air conditioner electric control module according to claim 6, characterized in that: After the water pump is controlled to switch to the target gear mode, the method further includes: detecting the running time of the water pump; and When the running time reaches the preset time, return to the step of obtaining the electric control module temperature of the electric control module.

8. A heat dissipation control device for an air conditioner electric control module, characterized in that: The heat dissipation control device of the air conditioner electronic control module comprises: A temperature acquisition module, used to acquire the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger of the cold storage heat exchanger; A temperature difference module, used for determining a first temperature difference according to the outlet temperature of the condenser and the internal temperature of the cold storage heat exchanger; A cooling capacity control module is used to control the cold storage heat exchanger to release cold capacity for cold capacity circulation when the first temperature difference is greater than a first preset temperature, so as to perform heat dissipation treatment on the electronic control module, wherein the cold storage heat exchanger and the subcooling heat exchanger are arranged on the refrigerant circulation flow path and are located between the evaporator and the condenser, the subcooling heat exchanger and the cold storage heat exchanger both have a first heat exchange branch and a second heat exchange branch, the inlet of the first heat exchange branch of the subcooling heat exchanger is connected to the outlet of the condenser, the outlet of the first heat exchange branch of the subcooling heat exchanger is respectively connected to the inlet of the second heat exchange branch of the cold storage heat exchanger and the inlet of the evaporator, the inlet of the second heat exchange branch of the subcooling heat exchanger is connected to the outlet of the first heat exchange branch of the cold storage heat exchanger, the outlet of the second heat exchange branch of the cold storage heat exchanger is connected to the inlet of the evaporator, and the outlet of the second heat exchange branch of the subcooling heat exchanger is connected to the inlet of the first heat exchange branch of the cold storage heat exchanger through a connecting flow path.

9. An air conditioner, characterized in that: The air conditioner includes: a memory, a processor, and an air conditioning electronic control module heat dissipation control program stored in the memory and executable on the processor. When the air conditioning electronic control module heat dissipation control program is executed by the processor, the steps of the air conditioning electronic control module heat dissipation control method as described in any one of claims 1 to 7 are implemented.

10. A storage medium, characterized in that: The storage medium stores an air conditioning electronic control module heat dissipation control program, and when the air conditioning electronic control module heat dissipation control program is executed by the processor, the steps of the air conditioning electronic control module heat dissipation control method according to any one of claims 1 to 7 are implemented.

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