Control method for energy storage air conditioner and energy storage air conditioner

Abstract

The application relates to the technical field of intelligent air conditioners, and discloses a control method for an energy storage air conditioner, the energy storage air conditioner comprising a water-cooled unit and a battery, and the water-cooled unit being used for regulating the temperature of the battery. The control method for the energy storage air conditioner comprises the following steps: obtaining the temperature of the battery and the outlet water temperature of the water-cooled unit; determining an outlet water temperature compensation value according to the outlet water temperature and / or the temperature of the battery; determining a target outlet water temperature according to the outlet water temperature compensation value and a preset outlet water temperature; and regulating the operating frequency of a compressor according to the outlet water temperature and the target outlet water temperature. By regulating the frequency of the compressor, the outlet water temperature is close to or maintained at the target outlet water temperature. The temperature of the battery is regulated by using the water circulating in the water-cooled unit, so that the battery works at an optimal working temperature, the capacity and service life of the battery are improved, and the water energy is reused, thereby improving the energy utilization efficiency. The application further discloses an energy storage air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent air conditioners, for example to a control method for an energy storage air conditioner and an energy storage air conditioner. BACKGROUND

[0002] The energy storage air conditioner adopts battery energy storage technology, can store electric energy in a specific period of time, and release electric energy for use by the air conditioner when needed. Compared with traditional air conditioners, the energy storage air conditioner has the advantages of lower energy consumption, longer service life, more stable operation, etc. The energy storage system of the energy storage air conditioner mainly depends on the battery, and the temperature of the battery will seriously affect the capacity and service life of the battery, thereby affecting the smooth operation and service life of the energy storage air conditioner. Therefore, how to regulate and control the temperature of the battery of the energy storage air conditioner has become a problem to be solved.

[0003] In the related art, a control method for an energy storage air conditioner and a control system for an energy storage air conditioner are provided to solve the above problems. The control method comprises: collecting a temperature value of the battery; determining whether the temperature value meets the conditions for starting a heating mode, a cooling mode or a standby low-power mode; and in the case where the temperature value meets the conditions for starting the heating mode, the cooling mode or the standby low-power mode, starting the heating mode, the cooling mode or the standby low-power mode correspondingly.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The control method for the energy storage air conditioner described above mainly collects the temperature value of the battery, consumes electric energy to run the cooling, heating or standby low-power mode according to the temperature value, and realizes the thermal management of the battery. This thermal management method is mainly applicable to air-cooled units, and needs to consume a large amount of electric energy, has limited energy saving degree, and has low energy utilization rate.

[0006] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a control method for an energy storage air conditioner and an energy storage air conditioner. Compared with the related art, the control method for the energy storage air conditioner provided by the present application is mainly applicable to an energy storage air conditioner integrated with a water-cooled unit, to reduce electric energy consumption and improve energy utilization efficiency.

[0009] In some embodiments, a control method for a storage air conditioner is provided, the storage air conditioner comprising a water-cooled unit and a battery, the water-cooled unit being configured to regulate the temperature of the battery. The control method for the storage air conditioner comprises: obtaining the temperature of the battery and the outlet water temperature of the water-cooled unit; determining an outlet water temperature compensation value according to the outlet water temperature and / or the temperature of the battery; determining a target outlet water temperature according to the outlet water temperature compensation value and a preset outlet water temperature; and regulating the operating frequency of the compressor according to the outlet water temperature and the target outlet water temperature.

[0010] In some embodiments, a storage air conditioner is provided, comprising a processor and a memory storing program instructions. The processor is configured to execute the control method for the storage air conditioner described in any of the above embodiments when running the program instructions.

[0011] The control method for the storage air conditioner and the storage air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0012] The control method for the storage air conditioner provided by the present disclosure, the storage air conditioner comprising a water-cooled unit and a battery, the water-cooled unit being configured to regulate the temperature of the battery. The control method for the storage air conditioner comprises: obtaining the temperature of the battery and the outlet water temperature of the water-cooled unit; determining an outlet water temperature compensation value according to the outlet water temperature and / or the temperature of the battery; determining a target outlet water temperature according to the outlet water temperature compensation value and a preset outlet water temperature; and regulating the operating frequency of the compressor according to the outlet water temperature and the target outlet water temperature.

[0013] The control method for the storage air conditioner provided by the present disclosure can obtain the temperature of the battery and the outlet water temperature of the water-cooled unit, and determine one or more outlet water temperature compensation values according to the outlet water temperature, or the temperature of the battery, or the outlet water temperature and the temperature of the battery. Then, a target outlet water temperature is further determined according to the determined outlet water temperature compensation value and a preset outlet water temperature. The operating frequency of the compressor is regulated according to the outlet water temperature and the target outlet water temperature, so as to regulate the outlet water temperature and make the outlet water temperature reach the target outlet water temperature. The water reaching the target outlet water temperature exchanges heat with the battery, so as to regulate the temperature of the battery. The temperature of the battery is regulated by using the water circulating in the water-cooled unit, which realizes the reuse of water energy and improves the energy utilization efficiency.

[0014] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are exemplified by the accompanying drawings corresponding thereto, which are exemplary and not limiting to the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limit, and wherein:

[0016] Figure 1is a schematic diagram of a control method for a storage energy air conditioner provided by one embodiment of the present disclosure;

[0017] Figure 2 is a schematic diagram of a control method for a storage energy air conditioner provided by another embodiment of the present disclosure;

[0018] Figure 3 is a schematic diagram of a control method for a storage energy air conditioner provided by another embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram of a control device for a storage energy air conditioner provided by one embodiment of the present disclosure;

[0020] Figure 5 is a schematic diagram of a storage energy air conditioner provided by one embodiment of the present disclosure;

[0021] Figure 6 is a schematic diagram of a structure of a storage energy air conditioner provided by one embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0023] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0024] Unless otherwise specified, the term "a plurality of" means two or more.

[0025] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0026] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0027] The term "corresponding" can refer to an association or binding relationship. A and B correspond to each other means that there is an association or binding relationship between A and B.

[0028] The system for executing the control method for the energy storage air conditioner includes a processor and a memory storing program instructions. It can also include a communication interface and a bus. The processor, communication interface, and memory can communicate with each other through the bus. The communication interface can be used for information transmission. The processor is configured to execute the control method for the energy storage air conditioner when running the program instructions.

[0029] In combination Figure 1 As shown in the drawings, the embodiments of the present disclosure provide a control method for an energy storage air conditioner, which includes:

[0030] S101, the processor acquires the battery temperature and the outlet water temperature of the water-cooled unit.

[0031] S102, the processor determines the outlet water temperature compensation value according to the outlet water temperature and / or the battery temperature.

[0032] S103, the processor determines the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature.

[0033] S104, the processor regulates the compressor operating frequency according to the outlet water temperature and the target outlet water temperature.

[0034] The control method for the energy storage air conditioner provided by the embodiments of the present disclosure can acquire the battery temperature and the outlet water temperature of the water-cooled unit, and determine one or more outlet water temperature compensation values according to the outlet water temperature, the battery temperature, or the outlet water temperature and the battery temperature. Then, the target outlet water temperature is further determined according to the determined outlet water temperature compensation value and the preset outlet water temperature. The compressor operating frequency is regulated through the outlet water temperature and the target outlet water temperature to achieve the regulation of the outlet water temperature, so that the outlet water temperature reaches the target outlet water temperature. The water reaching the target outlet water temperature exchanges heat with the battery to achieve the regulation of the battery temperature. The battery temperature is regulated by using the water circulating in the water-cooled unit, which realizes the reuse of water energy and improves the energy utilization efficiency.

[0035] Optionally, the acquisition of the battery temperature and the outlet water temperature of the water-cooled unit is real-time acquisition.

[0036] In this embodiment, the battery temperature and the outlet water temperature of the water-cooled unit are acquired in real time to achieve real-time thermal management of the battery, so that the battery is in the best working temperature in real time, thereby improving the capacity and service life of the battery.

[0037] Optionally, the acquisition of the battery temperature and the outlet water temperature of the water-cooled unit is periodic acquisition, and the acquisition period is t1.

[0038] In this embodiment, the battery temperature and the outlet water temperature of the water cooling unit are periodically acquired, so as to periodically manage the battery and reduce the data amount of the battery temperature and the outlet water temperature of the water cooling unit, thereby reducing the program running complexity of the control method and improving the program running speed. For example, the acquisition period t1 is 1 minute, 1.5 minutes or 2 minutes. It should be noted that the value of the period t1 can be specifically set according to the specific parameters of the battery or the performance parameters of the air conditioner, which is not described herein.

[0039] Optionally, the step of determining the outlet water temperature compensation value according to the battery temperature comprises: determining a temperature parameter of the battery in a preset period; and determining the outlet water temperature compensation value according to the temperature parameter of the battery and a target battery temperature. The temperature parameter of the battery comprises a maximum temperature of the battery in the preset period or an average temperature of the battery.

[0040] In this embodiment, the target battery temperature refers to the optimal working temperature of the battery, and the temperature parameter of the battery refers to the maximum temperature of the battery in the preset period, the average temperature of the battery or the maximum temperature of the battery and the average temperature of the battery. The outlet water temperature compensation value is determined according to one or more temperature parameters of the battery and the target battery temperature, so as to improve the accuracy of the outlet water temperature compensation value.

[0041] Optionally, the preset period is t2, and t2>t1.

[0042] In this embodiment, since t2>t1, the t2 contains multiple battery temperatures. The temperature parameter of the battery in t2 is determined according to the multiple battery temperatures, so as to improve the accuracy of the temperature parameter of the battery.

[0043] For example, the acquisition period t1 is 1 minute, and the preset period t2 is 5 minutes. bn represents the battery temperature acquired in the n th minute, bmax represents the maximum temperature of the battery. The acquired battery temperatures are T b1 , T b2 , T b3 , T b4 and T b5 , wherein T b1 <T b2 <T b3 <T b4 <T b5 . The maximum temperature of the battery in t2 is T bmax , which is T b5 .

[0044] For example, the acquisition period t1 is 1 minute, and the preset period t2 is 5 minutes. bn represents the battery temperature acquired in the n th minute, represents the average temperature of the battery. The acquired battery temperatures are Tb1 , T b2 , T b3 , T b4 and T b5 . Then the average temperature of the battery in the t2 time interval

[0045] It should be noted that the value of the preset period t2 can be set according to the specific parameters of the battery or the performance parameters of the air conditioner, which will not be described here.

[0046] Optionally, the step of determining the water temperature compensation value according to the temperature parameter of the battery and the target battery temperature comprises: determining a target parameter of the battery according to the temperature parameter of the battery and the target battery temperature; comparing the target parameter of the battery with a parameter threshold value; and determining the water temperature compensation value according to the comparison result; wherein the target parameter of the battery comprises a difference between the maximum temperature of the battery and the target battery temperature, a difference between the average temperature of the battery and the target battery temperature, or a change rate of the average temperature of the battery.

[0047] In this embodiment, the target battery temperature refers to the optimal working temperature of the battery, and the target parameter of the battery comprises a difference between the maximum temperature of the battery and the target battery temperature, a difference between the average temperature of the battery and the target battery temperature, or a change rate of the average temperature of the battery. One or more target parameters of the battery are determined according to the temperature parameter of the battery and the target battery temperature. Then the target parameter of the battery is compared with the corresponding parameter threshold value. According to the comparison result with the corresponding parameter threshold value, the water temperature compensation value is determined to improve the accuracy of the water temperature compensation value.

[0048] Specifically, ΔT1 is determined according to T bmax and T btar . Then ΔT1 is compared with ΔT b1 , ΔT b2 . In the case of ΔT1 < ΔT b1 , the water temperature compensation value is a. In the case of ΔT b1 ≤ ΔT1 < ΔT b2 , the water temperature compensation value is b. In the case of ΔT b2 ≤ ΔT1, the water temperature compensation value is c. Wherein T bmax represents the maximum temperature of the battery, T btar represents the target battery temperature. ΔT1 represents the difference between the maximum temperature of the battery and the target battery temperature, ΔT b1 represents the first battery temperature difference threshold value, ΔT b2 represents the second battery temperature difference threshold value, ΔT b1 < ΔT b2 . a, b, c are constants, a > b > c.

[0049] Tbmax T represents the highest temperature of the battery. btar This indicates the target battery temperature, which refers to the battery's optimal operating temperature. The difference ΔT1 between the battery's highest temperature and the target battery temperature is used as the basis for determining the outlet water temperature compensation value, thereby improving the reliability of the compensation. The preset outlet water temperature is then compensated based on this compensation value to determine the target outlet water temperature, thus improving the accuracy and reliability of the target outlet water temperature.

[0050] Furthermore, ΔT b1 The range of values ​​for is ΔT b1 <11℃. ΔT b2 The value range is 19℃ < ΔT b2 <21℃. The range of values ​​for a is -0.1℃ < a < 0.1℃. The range of values ​​for b is -0.6℃ < b < -0.4℃. The range of values ​​for c is -1.3℃ < c < -0.9℃.

[0051] In this embodiment, ΔT b1 ΔT represents the first battery temperature difference threshold. b2 This represents the second battery temperature difference threshold, and a, b, and c represent the outlet water temperature compensation values. By setting multiple battery temperature difference thresholds, different temperature difference thresholds correspond to different outlet water temperature compensation values, thereby improving the accuracy of confirming the outlet water temperature compensation value based on the difference between the battery's highest temperature and the target battery temperature.

[0052] For example, ΔT b1 The value is 10℃. ΔT b2 The value of is 20℃. The value of a is 0. The value of b is -0.5℃. The value of c is -1℃.

[0053] Specifically, according to and T btar Determine ΔT2. Then compare ΔT2 with ΔT. b3 ΔT b4 Compare them. When ΔT2 < ΔT b3 Under these conditions, the outlet water temperature compensation value is d. In ΔT... b3 ≤ΔT2<ΔT b4 Under these conditions, the outlet water temperature compensation value is e. In ΔT... b4 When ≤ΔT2, the outlet water temperature compensation value is f. Wherein, T represents the average temperature of the battery. btar This represents the target battery temperature. ΔT2 represents the difference between the average battery temperature and the target battery temperature. b3 ΔT represents the temperature difference threshold of the third battery. b4 This represents the fourth battery temperature difference threshold, ΔT. b3 <ΔT b4d, e, f are constants, d>e>f.

[0054] represents the average temperature of the battery, T btar represents the target battery temperature, the target battery temperature refers to the optimal working temperature of the battery. By taking the difference ΔT2 between the average temperature of the battery and the target battery temperature as the basis for determining the outlet water temperature compensation value, the reliability of the outlet water temperature compensation value is improved. Then, the preset outlet water temperature is compensated according to the outlet water temperature compensation value, so as to determine the target outlet water temperature, and the accuracy and reliability of the target outlet water temperature are improved.

[0055] Further, ΔT b3 is in the range of ΔT b3 <1.5℃. ΔT b4 is in the range of 1.5℃<ΔT b4 <2.5℃. d is in the range of -0.05℃<d<0.1℃. e is in the range of -0.05℃<e<-0.15℃. f is in the range of -0.25℃<f<-0.15℃.

[0056] In this embodiment, ΔT b3 represents the third battery temperature difference threshold, ΔT b4 represents the fourth battery temperature difference threshold, and d, e, f represent the outlet water temperature compensation value. By setting multiple battery temperature difference thresholds, different temperature difference thresholds correspond to different outlet water temperature compensation values, so as to improve the accuracy of determining the outlet water temperature compensation value according to the difference between the average temperature of the battery and the target battery temperature.

[0057] Exemplarily, ΔT b3 is 1℃. ΔT b4 is 2℃. d is 0. e is -0.1℃. f is -0.2℃.

[0058] Specifically, k1 in the preset period is determined according to Then, k1 is compared with K b1 , K b2 , K b3 , K b4 In the case of k1 b1 , the outlet water temperature compensation value is g. In the case of K b1 ≤k1 b2 , the outlet water temperature compensation value is h. In the case of K b2 ≤k1 b3 , the outlet water temperature compensation value is i. In the case of K b3 ≤k1 b4 , the outlet water temperature compensation value is j. In the case of K b4≤k1, the water outlet temperature compensation value is p. Wherein, represents the average temperature of the battery, and k1represents the average temperature change rate of the battery. b1 represents the first battery change rate threshold, K b2 represents the second battery change rate threshold, K b3 represents the third battery change rate threshold, K b4 represents the fourth battery change rate threshold, K b1 <K b2 <K b3 <K b4 g, h, i, j, and p are constants, and g>h>i>p. T bn represents the average temperature of the battery in the t2 time interval, and n≥5. q is a constant.

[0059] Exemplarily, in the 9th minute and the 10th minute, the determined average temperatures of the battery are T b9 and T b10 respectively. Then The purpose of the constant q is to correct the error of the average temperature change rate of the battery.

[0060] k1represents the average temperature change rate of the battery. By taking the average temperature change rate of the battery as the basis for determining the water outlet temperature compensation value, the water outlet temperature compensation value is determined according to the properties of the battery itself. Then, the preset water outlet temperature is compensated according to the water outlet temperature compensation value to determine the target water outlet temperature. According to the water outlet temperature and the target water outlet temperature, the operating frequency of the compressor is adjusted to adjust the water outlet temperature, thereby achieving the adjustment of the battery temperature. The battery temperature is adjusted from the properties of the battery itself to improve the reliability of the control method.

[0061] Further, the value range of K b1 is K b1 <0.6, the value range of K b2 is 0.9<K b2 <1.1, the value range of K b3 is 1.4<K b3 <1.6, the value range of K b4 is K b4 >1.9. The value range of g is 0.8℃<g<1.1℃. The value range of h is 0.3℃<e<0.6℃. The value range of i is -0.2℃<i<0.1℃. The value range of j is -0.6℃<j<-0.3℃. The value range of p is -1.1℃<p<-0.9℃. The value range of q is -0.5≤q≤0.5.

[0062] In this embodiment, K b1 represents the first battery change rate threshold, K b2represents a second battery change rate threshold, K b3 represents a third battery change rate threshold, K b4 represents a fourth battery change rate threshold. By setting multiple battery change rate thresholds, different battery change rate thresholds correspond to different outlet water temperature compensation values, so as to improve the accuracy of the outlet water temperature compensation value according to the average temperature change rate of the battery.

[0063] Exemplarily, K b1 = 0.5, K b2 = 1, K b3 = 1.5, and K b4 = 2. The value range of g is 1℃, the value range of h is 1.5℃, the value range of i is 0, the value range of j is -0.5℃, and the value range of p is -1℃. The value of q is 0.5. It should be noted that the value of the constant q needs to be determined by experiments according to the actual equipment specifications, and the values given in the present application are only for some implementation cases.

[0064] Optionally, the step of determining the outlet water temperature compensation value according to the outlet water temperature and the battery temperature comprises: calculating the difference between the battery temperature and the outlet water temperature at the end of the preset period; comparing the difference between the battery temperature and the outlet water temperature with a temperature difference threshold; and determining the outlet water temperature compensation value according to the comparison result.

[0065] In this embodiment, the difference between the battery temperature and the outlet water temperature at the end of the preset period is calculated, so as to determine the outlet water temperature compensation value according to the difference between the battery temperature and the outlet water temperature. By comparing the difference between the periodically obtained battery temperature and outlet water temperature with the corresponding temperature difference threshold, the outlet water temperature compensation value is determined according to the comparison result with the corresponding temperature difference threshold, so as to improve the accuracy of the outlet water temperature compensation value.

[0066] Specifically, ΔT3 is determined according to T wo and T b . ΔT3 is compared with ΔT wb1 , ΔT wb2 , ΔT wb3 . In the case of ΔT3 < ΔT wb1 , the outlet water temperature compensation value is w. In the case of ΔT wb1 ≤ ΔT3 < ΔT wb2 , the outlet water temperature compensation value is s. In the case of ΔT wb2 ≤ ΔT3 < ΔT wb3 , the outlet water temperature compensation value is x. In the case of ΔT wb3 ≤ ΔT3, the outlet water temperature compensation value is u. Wherein, T wo represents the outlet water temperature, and T b represents the battery temperature. ΔT3 represents the difference between the battery temperature and the outlet water temperature. ΔTwb1 represents a first temperature difference threshold, ΔT wb2 represents a second temperature difference threshold, ΔT wb3 represents a third temperature difference threshold, ΔT wb1 < ΔT wb2 < ΔT wb3 w, s, x, u are constants, w > s > x > u.

[0067] T wo represents the outlet water temperature, T b represents the battery temperature, the water cooled unit flows out water to exchange heat with the battery, realizing temperature regulation of the battery to improve the utilization efficiency of water energy. ΔT3represents the difference between the battery temperature and the outlet water temperature, and the difference between the battery temperature and the outlet water temperature affects the heat exchange rate between the water and the battery. By taking the difference between the battery temperature and the outlet water temperature as a basis for determining the outlet water temperature compensation value, the reliability of the outlet water temperature compensation value is improved. Then, according to the outlet water temperature compensation value, the preset outlet water temperature is compensated to determine the target outlet water temperature. Then, according to the outlet water temperature and the target outlet water temperature, the compressor operating frequency is regulated to regulate the outlet water temperature, so as to regulate the difference between the battery temperature and the outlet water temperature, so as to improve the heat exchange rate between the water and the battery, and improve the regulation rate of the battery temperature.

[0068] Further, ΔT wb1 has a value range of ΔT wb1 < 6℃, ΔT wb2 has a value range of 9℃ < ΔT wb2 < 11℃, ΔT wb3 has a value range of 14℃ < ΔT wb3 < 16℃. The value range of w is -0.05℃ < w < 0.1℃, the value range of s is -0.15℃ < s < -0.05℃, the value range of x is -0.6℃ < ΔT wb3 < -0.4℃, and the value range of u is -2.5℃ < u < -1.5℃.

[0069] In this embodiment, ΔT wb1 represents a first temperature difference threshold, ΔT wb2 represents a second temperature difference threshold, ΔT wb3 represents a third temperature difference threshold. By setting multiple temperature difference thresholds, different temperature difference thresholds correspond to different outlet water temperature compensation values, so as to improve the accuracy of determining the outlet water temperature compensation value according to the difference between the battery temperature and the outlet water temperature.

[0070] Exemplarily, ΔT wb1 has a value of 5℃, ΔT wb2 has a value of 10℃, and ΔT wb3The value of w is 0, the value of s is -0.1℃, the value of x is -0.5℃, and the value of u is -2℃.

[0071] Optionally, the step of determining the outlet water temperature compensation value according to the outlet water temperature comprises: calculating a change rate of the outlet water temperature in a preset period; comparing the change rate of the outlet water temperature with a change rate threshold; and determining the outlet water temperature compensation value according to the comparison result.

[0072] In this embodiment, the change rate of the outlet water temperature in a preset period is calculated, so as to determine the outlet water temperature compensation value according to the change rate of the outlet water temperature. By comparing the periodically obtained change rate of the outlet water temperature with the corresponding change rate threshold, the outlet water temperature compensation value is determined according to the comparison result with the corresponding change rate threshold, so as to improve the accuracy of the outlet water temperature compensation value.

[0073] Specifically, according to T wo , k2 in a preset period is determined. Then, k2 is compared with K w1 , K w2 , K w3 , K w4 . In the case of k2 w1 , the outlet water temperature compensation value is y. In the case of K w1 ≤k2 w2 , the outlet water temperature compensation value is z. In the case of K w2 ≤k2 w3 , the outlet water temperature compensation value is v. In the case of K w3 ≤k2 w4 , the outlet water temperature compensation value is o. In the case of K w4 ≤k2, the outlet water temperature compensation value is r. Wherein, T wo represents the outlet water temperature, and k2 represents the change rate of the outlet water temperature. K w1 represents the first change rate threshold, K w2 represents the second change rate threshold, K w3 represents the third change rate threshold, K w4 represents the fourth change rate threshold, and K w1 w2 w3 w4 . y, z, v, o, and r are constants, and z>v>o>r. T wn represents the outlet water temperature at the nth minute, and n≥5. q is a constant, and the purpose of the constant q is to correct the error of the outlet water temperature change rate. The value of the constant q needs to be determined by experiments according to the actual equipment specifications.

[0074] For example, at the 4th minute and the 5th minute, the determined average temperature of the battery is T​​​w4 , T w5 . Then

[0075] k2 represents a rate of change of the outlet water temperature, the water discharged from the water chilling unit exchanges heat with the battery to regulate the temperature of the battery, so as to improve the utilization efficiency of water energy. The rate at which the outlet water temperature reaches the target outlet water temperature affects the rate at which the battery temperature is regulated. By taking the rate of change of the outlet water temperature as a basis for determining the outlet water temperature compensation value, the reliability of the outlet water temperature compensation value can be improved. Then, according to the outlet water temperature compensation value, the preset outlet water temperature is compensated to determine the target outlet water temperature. Then, according to the outlet water temperature and the target outlet water temperature, the compressor operating frequency is regulated to regulate the outlet water temperature, so as to improve the rate at which the outlet water temperature reaches the target outlet water temperature and improve the rate at which the battery temperature is regulated.

[0076] Further, K w1 has a value range of K w1 < 0.7, K w2 has a value range of 0.7 < K w2 < 1, K w3 has a value range of 1.1 < K w3 < 1.4, K w4 has a value range of K w4 > 1.4. The value range of y is 1.5℃ < y < 2.5℃. The value range of z is 0.5℃ < z < 1.5℃. The value range of v is -0.5℃ < v < 0.5℃. The value range of o is -1.5℃ < o < -0.5℃. The value range of p is -2.5℃ < p < -1.5℃.

[0077] In this embodiment, K w1 represents a first rate threshold, K w2 represents a second rate threshold, K w3 represents a third rate threshold, and K w4 represents a fourth rate threshold. By setting multiple rate thresholds, different outlet water temperature compensation values correspond to different rate thresholds, so as to improve the accuracy of determining the outlet water temperature compensation value according to the rate of change of the outlet water temperature.

[0078] For example, K w1 has a value of 0.6, K w2 has a value of 0.8, K w3 has a value of 1.2, and K w4 has a value of 1.5. The value range of y is 2℃, the value range of z is 1℃, the value range of v is 0℃, the value range of o is -1℃, and the value range of p is -2℃.

[0079] In combination Figure 2As shown, the embodiment of the present disclosure provides another control method for the energy storage air conditioner, comprising:

[0080] In S201, the processor acquires the battery temperature and the outlet water temperature of the water cooling unit.

[0081] In S202, the processor determines the outlet water temperature compensation value according to the outlet water temperature and / or the battery temperature.

[0082] In S203, the processor acquires the outlet water temperature compensation value.

[0083] In S204, the processor determines the target compensation value according to the outlet water temperature compensation value.

[0084] In S205, the processor determines the target outlet water temperature according to the target compensation value and the preset outlet water temperature.

[0085] In S206, the processor regulates the compressor operating frequency according to the outlet water temperature and the target outlet water temperature.

[0086] In this embodiment, the outlet water temperature compensation value can be acquired, and the target compensation value is further determined according to the outlet water temperature compensation value. The preset outlet water temperature is compensated according to the target compensation value to determine the target outlet water temperature, so as to improve the accuracy of the target outlet water temperature. The compressor operating frequency is regulated according to the outlet water temperature and the target outlet water temperature, so that the outlet water temperature reaches the target outlet water temperature. The water reaching the target outlet water temperature exchanges heat with the battery, so as to regulate the battery temperature. By improving the accuracy of the target outlet water temperature, the reliability of the control method is further improved.

[0087] Optionally, the step of determining the target compensation value according to the outlet water temperature compensation value comprises: acquiring the number of outlet water temperature compensation values; in the case that the number of outlet water temperature compensation values is one, taking the outlet water temperature compensation value as the target compensation value; or in the case that the number of outlet water temperature compensation values is multiple, calculating the sum of the multiple outlet water temperature compensation values; comparing the sum of the compensation values with a compensation threshold to determine the target compensation value.

[0088] In this embodiment, the target compensation value is further determined according to the outlet water temperature compensation value, so as to improve the accuracy of the compensation value. The preset outlet water temperature is compensated according to the target compensation value to determine the target outlet water temperature, so as to improve the accuracy of the target outlet water temperature, thereby improving the reliability of the control method.

[0089] For example, the outlet water temperature compensation value is c. In the case that the number of outlet water temperature compensation values is one, c is taken as the target compensation value.

[0090] Exemplarily, the water outlet temperature compensation values are c, d, j, x and r. The number of water outlet temperatures is multiple. Then m0 is calculated, m0 = c + d + j + x + r. Then m0 is compared with the compensation threshold to determine the target compensation value. Wherein, m0 represents the sum of compensation values.

[0091] Optionally, the step of comparing the sum of compensation values with the compensation threshold to determine the target compensation value comprises: in the case of m0 < M1, taking M1 as the target compensation value; or, in the case of M1 < m0 < M2, taking m0 as the target compensation value; or, in the case of M2 < m0, taking M2 as the target compensation value; wherein, m0 represents the sum of compensation values, M1 represents the first compensation threshold, M2 represents the second compensation threshold, and M1 < M2.

[0092] In this embodiment, M1 represents the first compensation threshold, and M2 represents the second compensation threshold. Different compensation thresholds correspond to different target compensation values, and the target compensation value is used to compensate the preset water outlet temperature. Then the water outlet temperature and the target water outlet temperature are used to control the compressor operating frequency. The size of the target compensation value affects the compressor operating frequency. By setting the compensation threshold, the compressor operating frequency control range is limited, so that the compressor operating frequency does not change too much during the control of the compressor, and the compressor is not operated under high load. Exemplarily, the value of M1 is -5℃, and the value of M2 is 5℃.

[0093] In combination with Figure 3 The embodiment of the present disclosure provides another control method for an energy storage air conditioner, which comprises:

[0094] S301, the processor acquires the battery temperature and the water outlet temperature of the water cooling unit.

[0095] S302, the processor determines the water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature.

[0096] S303, the processor acquires the water outlet temperature compensation value.

[0097] S304, the processor determines the target compensation value according to the water outlet temperature compensation value.

[0098] S305, the processor determines the target water outlet temperature according to the target compensation value and the preset water outlet temperature.

[0099] S306, the processor calculates the difference between the water outlet temperature and the target water outlet temperature.

[0100] S307, the processor compares the difference between the water outlet temperature and the target water outlet temperature with the set threshold.

[0101] S308, the processor controls the compressor operating frequency according to the comparison result.

[0102] In this embodiment, the difference between the water temperature and the target water temperature can be calculated, and the calculated difference between the water temperature and the target water temperature is compared with a set threshold value. According to the comparison result with the set threshold value, the compressor operating frequency is regulated to regulate the water temperature so that the water temperature approaches or even maintains at the target water temperature. By approaching or even maintaining the water temperature at the target water temperature, the operating efficiency of the energy storage air conditioner is improved. At the same time, the battery temperature is regulated so that the battery works at the optimal working temperature, so as to improve the capacity and service life of the battery.

[0103] Optionally, the difference between the water temperature and the target water temperature is compared with a set threshold value; according to the comparison result, the step of regulating the compressor operating frequency comprises: in the case of ΔT4≥ΔT w1 , the compressor is controlled to continuously increase the frequency at the first frequency; in the case of ΔT w2 <ΔT4<ΔT w1 , the compressor is controlled to continuously increase the frequency at the second frequency; in the case of ΔT w3 ≤ΔT4≤ΔT w2 , the compressor is controlled to maintain the current frequency; in the case of ΔT w4 ≤ΔT4<ΔT w3 , the compressor is controlled to continuously decrease the frequency at the third frequency; in the case of ΔT w5 <ΔT4<ΔT w4 , the compressor is controlled to continuously decrease the frequency at the fourth frequency; in the case of ΔT4≤ΔT w5 , the compressor is controlled to continuously decrease the frequency at the first frequency; in the case of ΔT4≤ΔT w6 , the compressor is controlled to stop after decreasing the frequency at the first frequency for a time length of t3; in the case of ΔT4≥ΔT w7 , the compressor is controlled to start again. Wherein, ΔT4 represents the difference between the water temperature and the target water temperature. ΔT w1 represents the first set threshold value, ΔT w2 represents the second set threshold value, ΔT w3 represents the third set threshold value, ΔT w4 represents the fourth set threshold value, ΔT w5 represents the fifth set threshold value, ΔT w6 represents the sixth set threshold value, ΔT w7 represents the seventh set threshold value. ΔT w7 >ΔT w1 >ΔT w2 >ΔT w3 >ΔT w4 >ΔT w5 >ΔT w6 . t3 represents the operating time length of the compressor.

[0104] In this embodiment, ΔT w1 represents the first set threshold, ΔT w2 represents the second set threshold, ΔT w3 represents the third set threshold, ΔT w4 represents the fourth set threshold, ΔT w5 represents the fifth set threshold, ΔT w6 represents the sixth set threshold, ΔT w7 represents the seventh set threshold. By setting multiple set thresholds, different set thresholds correspond to different compressor control states, so that the difference between the outlet water temperature and the target outlet water temperature is accurately controlled to control the compressor operating frequency, so as to control the outlet water temperature. The outlet water temperature is close to or even maintained at the target outlet water temperature, so as to improve the operating efficiency of the energy storage air conditioner. At the same time, the battery works at the best working temperature, so as to improve the capacity and service life of the battery.

[0105] Exemplarily, the value of ΔT w1 is 2℃, the value of ΔT w2 is 1℃, the value of ΔT w3 is -1℃, the value of ΔT w4 is -2℃, the value of ΔT w5 is -3℃, the value of ΔT w6 is -6℃, and the value of ΔT w7 is 3℃. The first frequency is 1Hz / s, the second frequency is 0.01Hz / s, the third frequency is 1Hz / min, and the fourth frequency is 2Hz / min. The value of t3 is 3min.

[0106] It should be noted that the first set threshold ΔT w1 , the second set threshold ΔT w2 , the third set threshold ΔT w3 , the fourth set threshold ΔT w4 , the fifth set threshold ΔT w5 , the sixth set threshold ΔT w6 , the seventh set threshold ΔT w7 , and the corresponding first frequency, second frequency, third frequency, fourth frequency, and compressor operating time t3 need to be set and adjusted according to the specific equipment specifications. The values given in this application are only for some implementation cases.

[0107] In combination with Figure 4As shown, the embodiment of the present disclosure provides a control device 400 for an energy storage air conditioner, comprising a detection module 41, an acquisition module 42, an analysis module 43 and a regulation module 44. The detection module 41 is configured to acquire a battery temperature and a water outlet temperature of a water cooling unit; the acquisition module 42 is configured to determine a water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature; the analysis module 43 is configured to determine a target water outlet temperature according to the water outlet temperature compensation value and a preset water outlet temperature; and the regulation module 44 is configured to regulate a compressor operating frequency according to the water outlet temperature and the target water outlet temperature.

[0108] By using the control device for an energy storage air conditioner provided by the embodiment of the present disclosure, one or more water outlet temperature compensation values can be determined according to the water outlet temperature and / or the battery temperature. Then, a target water outlet temperature is determined according to the determined water outlet temperature compensation value and a preset water outlet temperature. The compressor operating frequency is regulated according to the water outlet temperature and the target water outlet temperature to regulate the water outlet temperature, so as to realize battery temperature regulation. The water outlet temperature is close to or even maintained at the target water outlet temperature, so as to improve the operating efficiency of the energy storage air conditioner and the capacity and service life of the battery.

[0109] In combination Figure 5 As shown, the embodiment of the present disclosure provides an energy storage air conditioner 500, comprising a processor 510 and a memory 520. Optionally, the device can further comprise a communication interface 530 and a bus 540. The processor 510, the communication interface 530 and the memory 520 can complete mutual communication through the bus 540. The communication interface 530 can be used for information transmission. The processor 510 can invoke the logical instructions in the memory 520 to execute the control method for an energy storage air conditioner of the above-mentioned embodiments.

[0110] In addition, when the logical instructions in the memory 520 are implemented in the form of a software function unit and sold or used as an independent product, the logical instructions can be stored in a computer readable storage medium.

[0111] The memory 520 as a computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 510 executes the function application and data processing by running the program instructions / modules stored in the memory 520, that is, realizes the control method for an energy storage air conditioner in the above-mentioned embodiments.

[0112] The memory 520 can include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application program required by at least one function; and the data storage area can store data created according to use of the terminal device, etc. In addition, the memory 520 can include a high-speed random access memory, and can also include a nonvolatile memory.

[0113] In combination Figure 6 As shown in the drawings, the embodiment of the present disclosure provides a kind of energy storage air conditioner 600, comprising: air conditioner body and the control device 400 for energy storage air conditioner described above.The control device 400 for energy storage air conditioner is installed in air conditioner body.The installation relationship expressed here is not only limited to placing in product, it also includes the installation connection with other components of product, including but not limited to physical connection, electrical connection or signal transmission connection etc..Those skilled in the art can understand that the control device 400 for energy storage air conditioner can be adapted to feasible product body, to realize other feasible embodiments.

[0114] The embodiment of the present disclosure provides a kind of computer readable storage medium, computer executable instruction is stored, the computer executable instruction is set to execute the control method for energy storage air conditioner described above.

[0115] The computer readable storage medium described above can be a transitory computer readable storage medium, or a non-transitory computer readable storage medium.

[0116] The technical scheme of the embodiment of the present disclosure can be embodied in the form of software product, the computer software product is stored in a storage medium, includes one or more instructions to make a computer device (can be personal computer, server or network device etc.) execute the method described in the embodiment of the present disclosure all or part of steps.And the storage medium described above can be non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk etc. a variety of can store program code medium, it can also be transitory storage medium.

[0117] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0118] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0119] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.), can be implemented in other manners. For example, the described apparatus embodiments can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, application program) or the like. In some embodiments, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or indirect coupling between different units, or the coupling or direct coupling or indirect coupling between the displayed or discussed communication connections can be in a form of electrical, mechanical or other forms.

[0120] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the system, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in an order different from that disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A control method for an energy storage air conditioner, the energy storage air conditioner including a water-cooled unit for regulating a battery temperature and a battery, the control method being characterized by, The control method for the energy storage air conditioner comprises: obtaining a battery temperature and a water outlet temperature of a water cooling unit; determining an outlet temperature compensation value according to the water outlet temperature and / or the battery temperature; the step of determining the outlet temperature compensation value according to the battery temperature comprises: determining a temperature parameter of the battery in a preset period; determining a target parameter of the battery according to the temperature parameter of the battery and a target battery temperature; comparing the target parameter of the battery with a parameter threshold; and determining the outlet temperature compensation value according to a comparison result; wherein the temperature parameter of the battery comprises a maximum temperature of the battery or an average temperature of the battery in the preset period; the target parameter of the battery comprises a difference between the maximum temperature of the battery and the target battery temperature, a difference between the average temperature of the battery and the target battery temperature, or a change rate of the average temperature of the battery; or, the step of determining the outlet temperature compensation value according to the water outlet temperature and the battery temperature comprises: calculating a difference between the battery temperature and the water outlet temperature at the end of the preset period; comparing the difference between the battery temperature and the water outlet temperature with a temperature difference threshold; and determining the outlet temperature compensation value according to a comparison result; or, the step of determining the outlet temperature compensation value according to the water outlet temperature comprises: calculating a change rate of the water outlet temperature in the preset period; comparing the change rate of the water outlet temperature with a change rate threshold; and determining the outlet temperature compensation value according to a comparison result; determining a target water outlet temperature according to the outlet temperature compensation value and a preset water outlet temperature; adjusting a compressor operating frequency according to the water outlet temperature and the target water outlet temperature.

2. The control method for the energy storage air conditioner according to claim 1, characterized by, The step of determining the target water outlet temperature according to the outlet temperature compensation value and the preset water outlet temperature comprises: obtaining the outlet temperature compensation value; determining a target compensation value according to the outlet temperature compensation value; determining the target water outlet temperature according to the target compensation value and the preset water outlet temperature.

3. The control method for the energy storage air conditioner according to claim 2, characterized by, The step of determining the target compensation value according to the outlet temperature compensation value comprises: obtaining a number of the outlet temperature compensation values; in a case where the number of the outlet temperature compensation values is one, taking the outlet temperature compensation value as the target compensation value; or, in a case where the number of the outlet temperature compensation values is multiple, calculating a sum of the multiple outlet temperature compensation values; comparing the sum of the compensation values with a compensation threshold to determine the target compensation value.

4. The control method for the energy storage air conditioner according to claim 3, characterized by, The step of comparing the sum of the compensation values with the compensation threshold to determine the target compensation value comprises: in a case where m0 in a case where M1 in a case where M2 wherein m0 represents the sum of the compensation values, M1 represents a first compensation threshold, M2 represents a second compensation threshold, and M1 5. The control method for the energy storage air conditioner according to claim 1, characterized by, The step of adjusting the compressor operating frequency according to the water outlet temperature and the target water outlet temperature comprises: calculating a difference between the water outlet temperature and the target water outlet temperature; comparing the difference between the water outlet temperature and the target water outlet temperature with a set threshold; adjusting the compressor operating frequency according to a comparison result.

6. An energy storage air conditioner characterized by, comprises: a processor; and a memory storing program instructions, the processor being configured to execute the control method for the energy storage air conditioner as claimed in any one of claims 1 to 5 when running the program instructions.

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