Defrosting Control Method, Device and Storage Medium for a New Energy Vehicle Air Conditioner

Abstract

The present invention discloses a defrosting control method, device and storage medium for an air conditioner of a new energy vehicle, including: setting different defrosting temperatures according to whether the real-time value of the ambient temperature is greater than or equal to the first set threshold of the ambient temperature; judging whether the real-time value of the air conditioner core temperature is less than or equal to the defrosting temperature, if so, directly entering the normal defrosting mode; otherwise, entering the pre-defrosting mode; after the normal defrosting mode or the pre-defrosting mode is completed, entering the recovery mode, and setting different air conditioner core threshold temperatures according to whether the real-time value of the ambient temperature is greater than or equal to the second set threshold of the ambient temperature; judging whether the real-time value of the air conditioner core temperature is greater than the air conditioner core threshold temperature, if so, increasing the rotation speed of the compressor to the normal operating speed at a normal speed; otherwise, increasing the rotation speed of the compressor to the normal operating speed at a slow speed. The present invention can effectively achieve defrosting, improve the comfort of personnel, and reduce the energy consumption of the new energy vehicle.

Description

Technical Field

[0001] The present invention specifically relates to a defrosting control method, device and storage medium for a new energy vehicle air conditioner. Background Art

[0002] The existing defrosting methods for new energy vehicle air conditioners basically adopt the following two methods:

[0003] Method 1: When the core temperature reaches the defrosting temperature, the compressor stops running for defrosting; when the core temperature recovers, the compressor resumes to the specified speed.

[0004] Method 2: When the core temperature reaches the defrosting temperature, the compressor reduces its speed for defrosting; when the core temperature recovers, the compressor resumes to the specified speed.

[0005] Both of the above two methods have their respective disadvantages. In Method 1, when the compressor stops running, it will start and stop frequently when the ambient temperature is low, which affects the service life of the compressor and the comfort of the personnel. In Method 2, when the ambient temperature is low, the compressor will have two extreme phenomena of maximum and minimum speeds, and the outlet air temperature will vary greatly, which will affect both the energy consumption of the new energy vehicle and the comfort of the personnel. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a defrosting control method, device and storage medium for a new energy vehicle air conditioner.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] On the one hand, the present invention discloses a defrosting control method for a new energy vehicle air conditioner, including the following steps:

[0009] According to whether the real-time value T1 of the ambient temperature is greater than or equal to the first set threshold T of the ambient temperature 1s1 set different defrosting temperatures T 2s ;

[0010] Judge whether the real-time value T3 of the air conditioner core temperature is less than or equal to the defrosting temperature T 2s ,

[0011] If so, directly enter the normal defrosting mode, and the normal defrosting mode includes the following: quickly reduce the speed of the compressor to the lowest speed R min , wait for t time, then the compressor stops for defrosting until the real-time value T3 of the air conditioner core temperature reaches the preset first exit temperature T out1 ;

[0012] Otherwise, enter the pre-defrosting mode, and the pre-defrosting mode includes the following: gradually reduce the speed of the compressor to the sub-lowest speed Rmid until the real-time value T3 of the air-conditioning core temperature reaches the preset second exit temperature T out2 ;

[0013] Where: R mid > R min ;

[0014] T out2 ≥ T out1 ;

[0015] After the normal defrosting mode or the pre-defrosting mode is completed, enter the recovery mode. The recovery mode includes the following: According to whether the real-time value T1 of the ambient temperature is greater than or equal to the second set threshold T of the ambient temperature 1s2 Set different threshold temperatures T of the air-conditioning core 3s ;

[0016] Judge whether the real-time value T3 of the air-conditioning core temperature is greater than the threshold temperature T of the air-conditioning core 3s ,

[0017] If so, the rotational speed of the compressor increases to the normal operating speed at a normal speed;

[0018] Otherwise, the rotational speed of the compressor increases to the normal operating speed at a slow speed.

[0019] On the basis of the above technical solution, the following improvements can also be made:

[0020] As a preferred solution, T out2 , T out1 and the set defrosting temperature T 2s have the following relationship:

[0021] T out1 = T 2s + a;

[0022] T out2 = T 2s + b, b ≥ a;

[0023] Where: a and b are natural numbers.

[0024] As a preferred solution, in the pre-defrosting mode, if the real-time value T3 of the air-conditioning core temperature is less than the defrosting temperature T 2s , then quickly reduce the rotational speed of the compressor to the lowest speed R min .

[0025] As a preferred solution, after entering the normal defrosting mode, first save the last rotational speed R of the compressor last .

[0026] As a preferred solution, in the normal defrosting mode, when waiting for t time, if the real-time value T3 of the air-conditioning core body temperature is greater than the set third exit temperature T out3 , the compressor resumes to the last rotational speed R last , and exits the normal defrosting mode, re-judges the ambient temperature, and sets the defrosting temperature T 2s .

[0027] As a preferred solution, T out3 and T out2 , T out1 , the defrosting temperature T 2s have the following relationship:

[0028] T out3 = T 2s + c, where c < a ≤ b;

[0029] where: c is a natural number.

[0030] As a preferred solution, "judging whether the real-time value T3 of the air-conditioning core body temperature is less than or equal to the defrosting temperature T 2s " specifically includes: judging whether the real-time value T3 of the air-conditioning core body temperature is less than or equal to the defrosting temperature T 2s , and judging whether the real-time value T3 of the air-conditioning core body temperature has a downward trend.

[0031] On the other hand, the present invention discloses a defrosting control device for a new energy vehicle air conditioner, including:

[0032] One or more processors;

[0033] A memory;

[0034] And one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by one or more processors, and the one or more programs include instructions for any of the above defrosting control methods.

[0035] In addition, the present invention also discloses a storage medium, the storage medium stores one or more programs, the one or more programs include instructions, and the instructions are adapted to be loaded and executed by the memory for any of the above defrosting control methods.

[0036] The present invention discloses a defrosting control method, device and storage medium for a new energy vehicle air conditioner, and has the following beneficial effects:

[0037] First, the present invention judges the ambient temperature, sets different defrosting temperatures for different ambient temperatures, takes the ambient temperature into consideration, and makes the setting of the defrosting temperature more reasonable.

[0038] Second, in the recovery mode of the present invention, different threshold temperatures of the air conditioner core are set according to different ambient temperatures, and the speed increase of the compressor is more reasonable.

[0039] Third, the present invention can achieve automatic defrosting, solves the problem of polarization of the maximum and minimum compressor speeds in the prior art, solves the problem of the sudden increase and decrease of the outlet air temperature, improves the comfort of personnel, and reduces the energy consumption of the system energy vehicle. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can be obtained based on these drawings.

[0041] Figure 1 One of the flowcharts of the defrosting control method provided for the embodiments of the present invention.

[0042] Figure 2 Another flowchart of the defrosting control method provided for the embodiments of the present invention. Detailed Embodiments

[0043] The preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0045] Using ordinal numbers such as "first", "second", "third", etc. to describe ordinary objects only represents different instances of similar objects, and does not intend to imply that the objects so described must have a given order in terms of time, space, sorting, or any other way.

[0046] In addition, the expression of "including" elements is an "open" expression. This "open" expression only means that there are corresponding components or steps, and should not be construed as excluding additional components or steps.

[0047] In order to achieve the purpose of the present invention, in some embodiments of a defrosting control method, device and storage medium for a new energy vehicle air conditioner, as Figure 1 shown, the defrosting control method includes the following steps:

[0048] S1: Determine whether the real-time value T1 of the ambient temperature is greater than or equal to the first set threshold T of the ambient temperature 1s1 Set different defrosting temperatures T 2s ;

[0049] In this embodiment, the first set threshold T 1s1 is 26 °C. When T1 ≥ 26 °C, T 2s is 2 °C. When T1 < 26 °C, T 2s is 3 °C;

[0050] S2: Determine whether the real-time value T3 of the air conditioner core temperature is less than or equal to the defrosting temperature T 2s ,

[0051] If so, directly enter the normal defrosting mode. The normal defrosting mode includes the following: quickly reduce the rotational speed of the compressor to the lowest rotational speed R min , R min is 1500 r / s. After waiting for 120 s, the compressor stops for defrosting until the real-time value T3 of the air conditioner core temperature reaches the preset first exit temperature T out1 , T out1 = T 2s + 3;

[0052] Otherwise, enter the pre-defrosting mode. The pre-defrosting mode includes the following: gradually reduce the rotational speed of the compressor to the sub-lowest rotational speed R at a speed of reducing 3% (140 revolutions) every 20 s mid , R mid is 2200 r / s until the real-time value T3 of the air conditioner core temperature reaches the preset second exit temperature T out2 , T out2 = T 2s + 5;

[0053] S3: After the normal defrosting mode or the pre-defrosting mode is completed, enter the recovery mode. The recovery mode includes the following: According to whether the real-time value T1 of the ambient temperature is greater than or equal to the second set threshold T of the ambient temperature 1s2 Set different air conditioner core threshold temperatures T 3s ;

[0054] In this embodiment, the second set threshold T 1s2 is 26 °C. When T1 ≥ 26 °C, T 3s is 7 °C. When T1 < 26 °C, T 3s is 9 °C;

[0055] Determine whether the real-time value T3 of the air conditioner core temperature is greater than the air conditioner core threshold temperature T 3s ,

[0056] If so, the rotational speed of the compressor increases to the normal operating speed at a normal speed;

[0057] Otherwise, the rotational speed of the compressor increases to the normal operating speed at a slow speed of 140 revolutions per time.

[0058] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, the difference is that in the pre - defrosting mode, if the real - time value T3 of the air - conditioner core body temperature is less than the defrosting temperature T 2s , then quickly reduce the rotational speed of the compressor to the lowest rotational speed R min .

[0059] In the pre - defrosting mode, gradually reduce the rotational speed of the compressor to the second - lowest rotational speed of 2200 r / s. When the second - lowest rotational speed is reached, if the real - time value T3 of the air - conditioner core body temperature is not less than the defrosting temperature T 2s , then the compressor operates at the second - lowest rotational speed all the time. At this time, the air - conditioner continues to refrigerate, and at the same time, it is ensured that the air - conditioner basically cannot enter the frosting state. If the real - time value T3 of the air - conditioner core body temperature is less than the defrosting temperature T 2s , then quickly reduce the rotational speed of the compressor to 1500 r / s.

[0060] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, the difference is that after entering the normal defrosting mode, first save the last rotational speed R of the compressor last .

[0061] In the normal defrosting mode, when waiting for 120 s, if the real - time value T3 of the air - conditioner core body temperature is greater than the set third exit temperature T out3 , T out3 =T 2s +1, then the compressor resumes to the last rotational speed R last , and exits the normal defrosting mode, re - judges the ambient temperature, and sets the defrosting temperature T 2s .

[0062] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, the difference is that "judging whether the real - time value T3 of the air - conditioner core body temperature is less than or equal to the defrosting temperature T 2s " specifically includes: judging whether the real - time value T3 of the air - conditioner core body temperature is less than or equal to the defrosting temperature T 2s , and judging whether the real - time value T3 of the air - conditioner core body temperature has a downward trend.

[0063] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, the difference is that as Figure 2 shown, S2 is specifically:

[0064] Determine whether the real-time value T3 of the air-conditioning core temperature is less than or equal to the defrosting temperature T 2s ,

[0065] If so, directly enter the normal defrosting mode, and the normal defrosting mode includes the following: quickly reduce the speed of the compressor to the lowest speed R min , R min is 1500 r / s. After waiting for 120 s, the compressor stops for defrosting until the real-time value T3 of the air-conditioning core temperature reaches the preset first exit temperature T out1 , T out1 = T 2s +3;

[0066] Otherwise, further determine the relationship between the real-time value T3 of the air-conditioning core temperature and T 2s +1 and T 2s +2;

[0067] When T3 ≤ T 2s +1, further determine whether the speed of the compressor is the lowest speed of 1500. If so, the speed of the compressor resumes to the speed before the previous reduction and enters the pre-defrosting mode. If not, directly enter the pre-defrosting mode;

[0068] T 2s +1 < T3 ≤ T 2s +2, directly enter the pre-defrosting mode;

[0069] The pre-defrosting mode includes the following: gradually reduce the speed of the compressor to the sub-lowest speed R mid , R mid is 2200 r / s at a speed of reducing 3% (140 revolutions) every 20 s until the real-time value T3 of the air-conditioning core temperature reaches the preset second exit temperature T out2 , T out2 = T 2s +5.

[0070] On the other hand, the present invention discloses a defrosting control device for a new energy vehicle air conditioner, including:

[0071] One or more processors;

[0072] A memory;

[0073] And one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, and the one or more programs include instructions for the defrosting control method disclosed in any of the above embodiments.

[0074] In addition, the present invention also discloses a storage medium storing one or more programs, and the one or more programs include instructions adapted to be loaded and executed by a memory to perform the defrosting control method disclosed in any of the above embodiments.

[0075] The present invention discloses a defrosting control method, device and storage medium for an air conditioner of a new energy vehicle, having the following beneficial effects:

[0076] First, the present invention judges the ambient temperature, sets different defrosting temperatures for different ambient temperatures, takes the ambient temperature into consideration, and makes the setting of the defrosting temperature more reasonable.

[0077] Second, in the recovery mode, the present invention sets different threshold temperatures for the air conditioner core according to different ambient temperatures, and the acceleration of the compressor is more reasonable.

[0078] Third, the present invention can achieve automatic defrosting, solves the phenomenon of polarization of the maximum and minimum compressor speeds in the prior art, solves the problem of large and small fluctuations in the outlet air temperature, improves the comfort of personnel, and reduces the energy consumption of the new energy vehicle.

[0079] It should be understood that the various technologies described herein can be implemented in combination with hardware or software, or a combination thereof. Thus, the method and device of the present invention, or certain aspects or parts of the method and device of the present invention, may take the form of program code (i.e., instructions) embedded in a tangible medium such as a floppy disk, CD-ROM, hard disk drive, or any other machine-readable storage medium, where when the program is loaded into and executed by a machine such as a computer, the machine becomes a device for practicing the present invention.

[0080] Meanwhile, the specific numerical values in the above embodiments are only examples, and the protection scope of the present invention is not limited to these numerical values.

[0081] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0082] In the present invention, unless otherwise clearly specified or limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A defrosting control method for a new energy vehicle air conditioner, characterized in that, Including the following steps: Whether the real-time value T1 of the ambient temperature is greater than or equal to the first set threshold T of the ambient temperature 1s1 Set different defrosting temperatures T 2s ; Determine whether the real-time value T3 of the air conditioner core temperature is less than or equal to the defrosting temperature T 2s , If so, directly enter the normal defrosting mode, and the normal defrosting mode includes the following: rapidly reduce the rotational speed of the compressor to the lowest rotational speed R min , after waiting for t time, the compressor stops for defrosting until the real-time value T3 of the temperature of the air-conditioning core reaches the preset first exit temperature T out1 ; Otherwise, enter the pre-defrosting mode, which includes the following: gradually reduce the rotational speed of the compressor to the second lowest speed R mid , until the real-time value T3 of the temperature of the air-conditioning core reaches the preset second exit temperature T out2 ; Wherein: R mid > R min ; T out2 ≥T out1 ; After the normal defrosting mode or the pre-defrosting mode is completed, the recovery mode is entered. The recovery mode includes the following: whether the real-time value T1 of the ambient temperature is greater than or equal to the second set threshold T of the ambient temperature 1s2 Set different threshold temperatures T of the air conditioner core 3s ; Determine whether the real-time value T3 of the air-conditioning core temperature is greater than the air-conditioning core threshold temperature T 3s , If so, the rotational speed of the compressor increases to the normal operating speed at a normal speed; Otherwise, the rotational speed of the compressor increases to the normal operating speed at a slow speed.

2. The defrosting control method according to claim 1, wherein T out2 、T out1 and the set defrosting temperature T 2s have the following relationship: T out1 = T 2s + a; T out2 = T 2s + b, where b ≥ a; Where: a and b are natural numbers.

3. The defrosting control method according to claim 1, characterized in that In the pre-defrosting mode, if the real-time value T3 of the air conditioner core temperature is less than the defrosting temperature T 2s , the rotation speed of the compressor is quickly reduced to the lowest speed R min .

4. The defrosting control method according to claim 1, characterized in that After entering the normal defrosting mode, first save the final rotational speed R of the compressor last .

5. The defrosting control method according to claim 4, characterized in that, In the normal defrosting mode, when waiting for time t, if the real-time value T3 of the air conditioner core body temperature is greater than the set third exit temperature T out3 , the compressor resumes to the last rotational speed R last , and exits the normal defrosting mode, re-judges the ambient temperature, and sets the defrosting temperature T 2s .

6. The defrosting control method according to claim 5, characterized in that, T out3 With T out2 、T out1 、The defrosting temperature T 2s Has the following relationship: T out3 = T 2s + c, where c < a ≤ b; Where: c is a natural number.

7. The defrosting control method according to any one of claims 1-6, characterized in that, "Determine whether the real-time value T3 of the air conditioner core temperature is less than or equal to the defrosting temperature T 2s "Specifically include: Determine whether the real-time value T3 of the air conditioner core temperature is less than or equal to the defrosting temperature T 2s , and determine whether the real-time value T3 of the air conditioner core temperature has a downward trend.

8. A defrosting control device for a new energy vehicle air conditioner, characterized in that Including: One or more processors; A memory; And one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, and the one or more programs include instructions for the defrosting control method according to any one of claims 1-7 above.

9. A storage medium, characterized in that, The storage medium stores one or more programs, and the one or more programs include instructions, and the instructions are adapted to be loaded and executed by the memory for the defrosting control method according to any one of claims 1-7 above.

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