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

Abstract

The invention 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 comprises a water chilling unit and a battery, and the water chilling unit is used for regulating and controlling the temperature of the battery. The control method for the energy storage air conditioner comprises the steps that the battery temperature and the water outlet temperature of the water chilling unit are obtained; determining a water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature; determining a target water outlet temperature according to the water outlet temperature compensation value and a preset water outlet temperature; and regulating and controlling the operation frequency of the compressor according to the outlet water temperature and the target outlet water temperature. By regulating and controlling the frequency of the compressor, the outlet water temperature is close to or even maintained at the target outlet water temperature. The temperature of the battery is regulated and controlled through water circularly flowing in the water cooling unit, so that the battery works at the optimal working temperature, the capacity of the battery is improved, the service life of the battery is prolonged, meanwhile, water energy is recycled, and the utilization efficiency of energy is improved. The invention further discloses the 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 Art

[0002] Energy storage air conditioners use battery energy storage technology, which can store electrical energy for a specific period of time and release electrical energy for air conditioning use when needed. Compared with traditional air conditioners, energy storage air conditioners have the advantages of lower energy consumption, longer life, and more stable operation. The energy storage system of energy storage air conditioners mainly relies on batteries. The temperature of the battery will seriously affect the capacity and life of the battery, thereby affecting the smooth operation and service life of the energy storage air conditioner. Therefore, how to control the battery temperature of the energy storage air conditioner has become an urgent problem to be solved.

[0003] In the related art, a control method of an energy storage air conditioner and a control system of an energy storage air conditioner are provided to solve the above problems. The control method includes: collecting the temperature value of the battery; judging whether the temperature value meets the conditions for starting the heating mode, the cooling mode or the standby low power consumption mode; if the temperature value meets the conditions for the heating mode, the cooling mode or the standby low power consumption mode, the heating mode, the cooling mode or the standby low power consumption mode is turned on accordingly.

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

[0005] The control method of the energy storage air conditioner mainly collects the temperature value of the battery and consumes electric energy to operate the cooling, heating or standby low power consumption mode according to the temperature value to achieve thermal management of the battery. This thermal management method is mainly suitable for air-cooled units and requires a large amount of electric energy consumption, with limited energy saving and low energy utilization.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a control method for an energy storage air conditioner and an energy storage air conditioner. Compared with the related art, the control method for an energy storage air conditioner provided in the present application is mainly applicable to an energy storage air conditioner integrated with a water cooling unit to reduce power consumption and improve energy utilization efficiency.

[0009] In some embodiments, a control method for an energy storage air conditioner is provided, wherein the energy storage air conditioner includes a water cooling unit and a battery, and the water cooling unit is used to control the battery temperature. The control method for the energy storage air conditioner includes: obtaining the battery temperature and the outlet water temperature of the water cooling unit; determining the outlet water temperature compensation value according to the outlet water temperature and / or the battery temperature; determining the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature; and regulating the compressor operating frequency according to the outlet water temperature and the target outlet water temperature.

[0010] In some embodiments, an energy 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 energy storage air conditioner described in any of the above embodiments when running the program instructions.

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

[0012] The present disclosure provides a control method for an energy storage air conditioner, the energy storage air conditioner includes a water cooling unit and a battery, and the water cooling unit is used to control the battery temperature. The control method for the energy storage air conditioner includes: obtaining the battery temperature and the outlet water temperature of the water cooling unit; determining the outlet water temperature compensation value according to the outlet water temperature and / or the battery temperature; determining the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature; and regulating the compressor operation frequency according to the outlet water temperature and the target outlet water temperature.

[0013] The control method for energy storage air conditioner provided by the present disclosure can obtain the battery temperature and the outlet water temperature of the water cooling unit, and determine one or more outlet water temperature compensation values ​​according to the outlet water temperature, or the battery temperature, or the outlet water temperature and the battery temperature. 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 by the outlet water temperature and the target outlet water temperature to achieve the outlet water temperature so that the outlet water temperature reaches the target outlet water temperature. The water that reaches the target outlet water temperature exchanges heat with the battery to achieve the regulation of the battery temperature. The battery temperature is regulated by the water circulating in the water cooling unit, so as to achieve the reuse of water energy and improve the energy utilization efficiency.

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

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

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

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

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

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

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

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

[0022] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0023] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0024] Unless otherwise stated, the term "plurality" means two or more.

[0025] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

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

[0027] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a 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 may also include a communication interface and a bus. The processor, the communication interface, and the 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] Combination Figure 1 As shown, the embodiment of the present disclosure provides a control method for an energy storage air conditioner, comprising:

[0030] S101, the processor obtains the battery temperature and the outlet water temperature of the water cooling unit.

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

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

[0033] S104: The processor adjusts the operating frequency of the compressor according to the outlet water temperature and the target outlet water temperature.

[0034] By adopting the control method for energy storage air conditioner provided by the embodiment of the present disclosure, it is possible to obtain the battery temperature and the outlet water temperature of the water cooling unit, and determine one or the outlet water temperature compensation value according to the outlet water temperature, or the battery temperature, or the outlet water temperature and the battery temperature. 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 by the outlet water temperature and the target outlet water temperature to achieve the outlet water temperature so that the outlet water temperature reaches the target outlet water temperature. The water that reaches the target outlet water temperature exchanges heat with the battery to achieve the regulation of the battery temperature. The battery temperature is regulated by the water circulating in the water cooling unit, so as to achieve the reuse of water energy and improve the energy utilization efficiency.

[0035] Optionally, the battery temperature and the outlet water temperature of the water cooling unit are obtained in real time.

[0036] In this embodiment, the battery temperature and the outlet water temperature of the water cooling unit are obtained in real time to facilitate real-time thermal management of the battery, so that the battery is at an optimal operating temperature in real time, thereby improving the battery capacity and service life.

[0037] Optionally, the battery temperature and the outlet water temperature of the water cooling unit are obtained periodically, 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 obtained to facilitate periodic thermal management of the battery, while reducing the amount of data of the battery temperature and the outlet water temperature of the water cooling unit, so as to reduce the complexity of the program operation of the control method and improve the program operation rate. Exemplarily, 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 will not be repeated here.

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

[0040] In this embodiment, the target battery temperature refers to the optimal operating temperature of the battery, and the battery temperature parameter refers to the maximum temperature of the battery, the average temperature of the battery, or the maximum temperature of the battery and the average temperature of the battery within a preset period. The outlet water temperature compensation value is determined by one or more battery temperature parameters and the target battery temperature to improve the accuracy of the outlet water temperature compensation value.

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

[0042] In this embodiment, since t2>t1, t2 contains multiple battery temperatures. The temperature parameters of the battery in t2 are determined by using the multiple battery temperatures to improve the accuracy of the battery temperature parameters.

[0043] Exemplarily, the acquisition period t1 is 1 minute, and the preset period t2 is 5 minutes. bn Indicates the battery temperature obtained at the nth minute, T bmax Indicates the maximum temperature of the battery. The battery temperatures obtained are T b1 、T b2 、T b3 、T b4 and T b5 , where T b1 <T b2 <T b3 <T b4 <T b5 . Then the maximum temperature of the battery in t2 is T bmax T b5 .

[0044] Exemplarily, the acquisition period t1 is 1 minute, and the preset period t2 is 5 minutes. bn Indicates the battery temperature obtained at the nth minute. Represents the average temperature of the battery. The battery temperatures obtained are Tb1 、T b2 、T b3 、T b4 and T b5 The average temperature of the battery during the time interval t2 is

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

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

[0047] In this embodiment, the target battery temperature refers to the optimal operating temperature of the battery, and the target parameters of the battery include the difference between the maximum temperature of the battery and the target battery temperature, the difference between the average temperature of the battery and the target battery temperature, or the average temperature change rate of the battery. The target parameters of one or more batteries are determined by the temperature parameters of the battery and the target battery temperature. The target parameters of the battery are then compared with the corresponding parameter thresholds. Based on the comparison results with the corresponding parameter thresholds, the outlet water temperature compensation value is determined to improve the accuracy of the outlet water temperature compensation value.

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

[0049] Tbmax Indicates the maximum temperature of the battery, T btar Indicates the target battery temperature, which refers to the optimal operating temperature of the battery. The difference ΔT1 between the maximum battery temperature and the target battery temperature is used as the basis for determining the outlet water temperature compensation value, so as to improve the reliability of the outlet water temperature compensation value. Then, the preset outlet water temperature is compensated according to the outlet water temperature compensation value to determine the target outlet water temperature, thereby improving the accuracy and reliability of the target outlet water temperature.

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

[0051] In this embodiment, ΔT b1 represents the first battery temperature difference threshold, ΔT b2 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, so as to improve the accuracy of confirming the outlet water temperature compensation value according to the difference between the maximum battery temperature and the target battery temperature.

[0052] For example, ΔT b1 The value of is 10℃. 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 For comparison. b3 In the case of , the outlet water temperature compensation value is d. b3 ≤ΔT2<ΔT b4 In the case of , the outlet water temperature compensation value is e. b4 When ≤ΔT2, the outlet water temperature compensation value is f. Indicates the average temperature of the battery, T btar represents the target battery temperature. ΔT2 represents the difference between the average battery temperature and the target battery temperature. ΔT b3 represents the third battery temperature difference threshold, ΔT b4 represents the fourth battery temperature difference threshold, ΔT b3 <ΔT b4. d, e, and f are constants, d>e>f.

[0054] Indicates the average temperature of the battery, T btar Indicates the target battery temperature, which refers to the optimal operating temperature of the battery. The difference ΔT2 between the average battery temperature and the target battery temperature is used as the basis for determining the outlet water temperature compensation value, so as to improve the reliability of the outlet water temperature compensation value. Then, the preset outlet water temperature is compensated according to the outlet water temperature compensation value to determine the target outlet water temperature, thereby improving the accuracy and reliability of the target outlet water temperature.

[0055] Furthermore, ΔT b3 The value range is ΔT b3 <1.5℃. ΔT b4 The value range is 1.5℃<ΔT b4 <2.5℃. The value range of d is -0.05℃<d<0.1℃. The value range of e is -0.05℃<e<-0.15℃. The value range of f is -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, and f represent outlet water temperature compensation values. 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 confirming the outlet water temperature compensation value according to the difference between the average battery temperature and the target battery temperature.

[0057] For example, ΔT b3 The value of is 1℃. b4 The value of is 2℃. The value of d is 0. The value of e is -0.1℃. The value of f is -0.2℃.

[0058] Specifically, according to Determine k1 within the preset period. Then compare k1 with K b1 , K b2 , K b3 , K b4 For comparison, when k1<K b1 In the case of K, the outlet water temperature compensation value is g. b1 ≤k1<K b2 In the case of K, the outlet water temperature compensation value is h. b2 ≤k1<K b3 In the case of K, the outlet water temperature compensation value is i. b3 ≤k1<K b4 In the case of K, the outlet water temperature compensation value is j. b4When ≤k1, the outlet water temperature compensation value is p. K represents the average temperature of the battery, and k1 represents 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, g>h>i>p. T bn It represents the average temperature of the battery in the nth minute, t2 time interval, n ≥ 5. q is a constant.

[0059] For example, at the 9th minute and the 10th minute, the average temperature of the battery is determined to be T b9 、T b10 .but The purpose of the constant q is to correct the error in the average battery temperature change rate.

[0060] k1 represents the average temperature change rate of the battery. The average temperature change rate of the battery is used as the basis for determining the outlet water temperature compensation value, so as to determine the outlet water temperature compensation value according to the properties of the battery itself. Then, the preset outlet water temperature is compensated according to the outlet water temperature compensation value to determine the target outlet water temperature. According to the outlet water temperature and the target outlet water temperature, the compressor operating frequency is adjusted to adjust the outlet water temperature, thereby realizing the regulation of the battery temperature. The battery temperature is regulated based on the properties of the battery itself to improve the reliability of the control method.

[0061] Furthermore, K b1 The value range is K b1 <0.6, K b2 The value range is 0.9<K b2 <1.1,K b3 The value range is 1.4<K b3 <1.6,K b4 The value range 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 the second battery change rate threshold, K b3 represents the third battery change rate threshold, K b4 Indicates the 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 confirming the outlet water temperature compensation value according to the average temperature change rate of the battery.

[0063] For example, K b1 The value of K is 0.5, b2 The value of K is 1, b3 The value of K is 1.5, b4 The value of is 2. The value range of g is 1°C, the value range of h is 1.5°C, the value range of i is 0, the value range of j is -0.5°C, and the value range of p is -1°C. The value of q is 0.5. It should be noted that the value of constant q needs to be experimentally determined according to the actual equipment specifications, and this application only provides some implementation situations.

[0064] Optionally, the step of determining the outlet water temperature compensation value according to the outlet water temperature and the battery temperature includes: calculating the difference between the battery temperature and the outlet water temperature at the end of a preset cycle; 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. The outlet water temperature compensation value is determined based on the comparison result with the corresponding temperature difference threshold by comparing the periodically obtained difference between the battery temperature and the outlet water temperature with the corresponding temperature difference threshold, so as to improve the accuracy of the outlet water temperature compensation value.

[0066] Specifically, according to T wo and T b , determine ΔT3. wb1 , ΔT wb2 , ΔT wb3 For comparison. wb1 In the case of , the outlet water temperature compensation value is w. wb1 ≤ΔT3<ΔT wb2 In the case of , the outlet water temperature compensation value is s. wb2 ≤ΔT3<ΔT wb3 In the case of , the outlet water temperature compensation value is x. wb3 When ≤ΔT3, the outlet water temperature compensation value is u. Where, T wo Indicates the outlet water temperature, T b Indicates the battery temperature. ΔT3 indicates the difference between the battery temperature and the outlet water temperature. ΔTwb1 Represents the first temperature difference threshold, ΔT wb2 Represents the second temperature difference threshold, ΔT wb3 represents the third temperature difference threshold, ΔT wb1 <ΔT wb2 <ΔT wb3 . w, s, x, and u are constants, w>s>x>u.

[0067] T wo Indicates the outlet water temperature, T b Indicates the battery temperature. The water flowing out of the water cooling unit exchanges heat with the battery to achieve temperature control of the battery to improve the utilization efficiency of water energy. ΔT3 represents the difference between the battery temperature and the outlet water temperature. The difference between the battery temperature and the outlet water temperature affects the heat exchange rate between water and the battery. The difference between the battery temperature and the outlet water temperature is used as the basis for determining the outlet water temperature compensation value to improve the reliability of the outlet water temperature compensation value. The preset outlet water temperature is then compensated according to the outlet water temperature compensation value to determine the target outlet water temperature. According to the outlet water temperature and the target outlet water temperature, the compressor operating frequency is adjusted to control the outlet water temperature, thereby adjusting the difference between the battery temperature and the outlet water temperature to increase the heat exchange rate between water and the battery and increase the battery temperature control rate.

[0068] Furthermore, ΔT wb1 The value range is ΔT wb1 <6℃,ΔT wb2 The value range is 9℃<ΔT wb2 <11℃,ΔT wb3 The value range is 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℃, and the value range of x is -0.6℃<ΔT wb3 <-0.4℃, the value range of u is -2.5℃<u<-1.5℃.

[0069] In this embodiment, ΔT wb1 Represents the first temperature difference threshold, ΔT wb2 Represents the second temperature difference threshold, ΔT wb3 Indicates the 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 confirming the outlet water temperature compensation value according to the difference between the battery temperature and the outlet water temperature.

[0070] For example, ΔT wb1 The value of is 5℃, ΔT wb2 The value of is 10℃, ΔT wb3The value of is 15℃. The 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 includes: calculating the rate of change of the outlet water temperature within a preset period; comparing the rate of change of the outlet water temperature with a rate of change threshold; and determining the outlet water temperature compensation value according to the comparison result.

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

[0073] Specifically, according to T wo , determine k2 within the preset period. Then k2 and K w1 , K w2 , K w3 , K w4 For comparison. w1 In the case of K, the outlet water temperature compensation value is y. w1 ≤k2<K w2 In the case of K, the outlet water temperature compensation value is z. w2 ≤k2<K w3 In the case of K, the outlet water temperature compensation value is v. w3 ≤k2<K w4 In the case of K, the outlet water temperature compensation value is o. w4 When ≤k2, the outlet water temperature compensation value is r. Where, T wo K represents the outlet water temperature, and k2 represents the rate of change of the outlet water temperature. 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 rate of change threshold, K w1 <K w2 <K w3 <K w4 . y, z, v, o, and r are constants, z>v>o>r. T wn Indicates the outlet water temperature at the nth minute, n≥5. q is a constant. The purpose of constant q is to correct the error of the outlet water temperature change rate. The value of constant q needs to be experimentally determined according to the actual equipment specifications.

[0074] For example, at the 4th minute and the 5th minute, the average temperature of the battery is determined to be Tw4 、T w5 .but

[0075] k2 represents the rate of change of the outlet water temperature. The water flowing out of the water cooling unit exchanges heat with the battery to achieve temperature control of the battery, thereby improving 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 controlled. The rate of change of the outlet water temperature is used as the basis for determining the outlet water temperature compensation value to improve the reliability of the outlet water temperature compensation value. The preset outlet water temperature is then compensated according to the outlet water temperature compensation value to determine the target outlet water temperature. Based on the outlet water temperature and the target outlet water temperature, the compressor operating frequency is adjusted, and the outlet water temperature is adjusted to increase the rate at which the outlet water temperature reaches the target outlet water temperature and the rate at which the battery temperature is controlled.

[0076] Furthermore, K w1 The value range is K w1 <0.7, K w2 The value range is 0.7<K w2 <1, K w3 The value range is 1.1<K w3 <1.4,K w4 The value range is 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 r is -2.5℃<p<-1.5℃.

[0077] In this embodiment, 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 By setting a plurality of change rate thresholds, different change rate thresholds correspond to different outlet water temperature compensation values, so as to improve the accuracy of confirming the outlet water temperature compensation value according to the change rate of the outlet water temperature.

[0078] For example, K w1 The value of K is 0.6, w2 The value of K is 0.8, w3 The value of K is 1.2, w4 The value of is 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 r is -2℃.

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

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

[0081] S202: The processor determines a water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature.

[0082] S203: The processor obtains a water outlet temperature compensation value.

[0083] S204: The processor determines a target compensation value according to the outlet water temperature compensation value.

[0084] S205: The processor determines a target outlet water temperature according to the target compensation value and a preset outlet water temperature.

[0085] S206: The processor adjusts the operating frequency of the compressor according to the outlet water temperature and the target outlet water temperature.

[0086] In this embodiment, a water outlet temperature compensation value can be obtained, and a target compensation value can be further determined based on the water outlet temperature compensation value. The preset water outlet temperature is compensated based on the target compensation value to determine the target water outlet temperature, thereby improving the accuracy of the target water outlet temperature. The compressor operating frequency is regulated by the water outlet temperature and the target water outlet temperature so that the water outlet temperature reaches the target water outlet temperature. The water reaching the target water outlet temperature performs heat exchange with the battery to achieve the regulation of the battery temperature. By improving the accuracy of the target water outlet temperature, the reliability of the control method is further improved.

[0087] Optionally, the step of determining the target compensation value based on the outlet water temperature compensation value includes: obtaining the number of outlet water temperature compensation values; when the number of outlet water temperature compensation values ​​is 1, taking the outlet water temperature compensation value as the target compensation value; or, when the number of outlet water temperature compensation values ​​is multiple, calculating the sum of multiple outlet water temperature compensation values; comparing the sum of the compensation values ​​with the compensation threshold to determine the target compensation value.

[0088] In this embodiment, a target compensation value is further determined based on the outlet water temperature compensation value to improve the accuracy of the compensation value, and then the preset outlet water temperature is compensated based on the target compensation value to determine the target outlet water temperature, thereby improving the accuracy of the target outlet water temperature and improving the reliability of the control method.

[0089] Exemplarily, the outlet water temperature compensation value is obtained, and the outlet water temperature compensation value is C. If the number of outlet water temperatures is 1, then C is used as the target compensation value.

[0090] Exemplarily, the outlet water temperature compensation values ​​are obtained, and the outlet water temperature compensation values ​​are c, d, j, x and r. The number of outlet water 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. Among them, m0 represents the sum of the compensation values.

[0091] Optionally, the step of comparing the sum of the compensation values ​​with the compensation threshold to determine the target compensation value includes: when m0<M1, taking M1 as the target compensation value; or, when M1<m0<M2, taking m0 as the target compensation value; or, when M2<m0, taking M2 as the target compensation value; wherein m0 represents the sum of the 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 for the preset water outlet temperature. The compressor operating frequency is then regulated by the outlet water temperature and the target outlet water temperature. The size of the target compensation value affects the operating frequency of the compressor. By setting the compensation threshold, the control range of the compressor operating frequency is limited to avoid excessive changes in the compressor operating frequency during the control process of the compressor, resulting in high-load operation of the compressor. By way of example, the value of M1 is -5°C, and the value of M2 is 5°C.

[0093] Combination Figure 3 As shown, the embodiment of the present disclosure provides another control method for an energy storage air conditioner, comprising:

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

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

[0096] S303: The processor obtains a water outlet temperature compensation value.

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

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

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

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

[0101] S308: The processor adjusts the operating frequency of the compressor according to the comparison result.

[0102] In this embodiment, the difference between the outlet water temperature and the target outlet water temperature can be calculated, and the calculated difference between the outlet water temperature and the target outlet water temperature is compared with the set threshold. According to the comparison result with the set threshold, the compressor operating frequency is adjusted to achieve the regulation of the outlet water temperature, so that the outlet water temperature is close to or even maintained at the target outlet water temperature. By making the outlet water temperature close to or even maintaining the target outlet 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 operates at the optimal operating temperature to improve the battery capacity and service life.

[0103] Optionally, the difference between the outlet water temperature and the target outlet water temperature is compared with a set threshold; and according to the comparison result, the step of regulating the operating frequency of the compressor comprises: when ΔT4≥ΔT w1 In the case of , the compressor is controlled to continuously increase the frequency at the first frequency; at ΔT w2 <ΔT4<ΔT w1 In the case of , the compressor is controlled to continuously increase the frequency at the second frequency; at ΔT w3 ≤ΔT4≤ΔT w2 In the case of ΔT, the compressor is controlled to maintain the current frequency; w4 ≤ΔT4<ΔT w3 In the case of , the compressor is controlled to continuously reduce the frequency at the third frequency; at ΔT w5 <ΔT4<ΔT w4 In the case of ΔT4≤ΔT w5 In the case of ΔT4≤ΔT w6 In the case of , the compressor is controlled to reduce the frequency of the first frequency for a time length of t3, and then the compressor is controlled to stop; when ΔT4 ≥ ΔT w7 In the case of , the compressor is controlled to start again. Wherein, ΔT4 represents the difference between the outlet water temperature and the target outlet water temperature. 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 Indicates the seventh set threshold. ΔT w7 >ΔT w1 >ΔT w2 >ΔT w3 >ΔT w4 >ΔT w5 >ΔT w6 . t3 represents the operating time 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 Indicates the seventh setting threshold. By setting multiple setting thresholds, different setting thresholds correspond to different compressor control states, so as to adjust the difference between the outlet water temperature and the target outlet water temperature, and accurately adjust the compressor operating frequency to adjust the outlet water temperature. Make the outlet water temperature close to or even maintain at the target outlet water temperature to improve the operating efficiency of the energy storage air conditioner. At the same time, make the battery work at the optimal working temperature to improve the battery capacity and service life.

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

[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 , seventh setting threshold ΔT w7 , and the corresponding first frequency, second frequency, third frequency, fourth frequency, and compressor operation time t3, need to be set and adjusted according to the specific equipment specifications. Only partial implementation is given in this application.

[0107] Combination 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 control module 44. The detection module 41 is configured to acquire the battery temperature and the outlet water temperature of the water cooling unit; the acquisition module 42 is configured to determine the outlet water temperature compensation value according to the outlet water temperature and / or the battery temperature; the analysis module 43 is configured to determine the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature; the control module 44 is configured to control the compressor operation frequency according to the outlet water temperature and the target outlet water temperature.

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

[0109] Combination Figure 5 As shown, the embodiment of the present disclosure provides an energy storage air conditioner 500, including a processor (processor) 510 and a memory (memory) 520. Optionally, the device may also include a communication interface (Communication Interface) 530 and a bus 540. Among them, the processor 510, the communication interface 530, and the memory 520 can communicate with each other through the bus 540. The communication interface 530 can be used for information transmission. The processor 510 can call the logic instructions in the memory 520 to execute the control method for the energy storage air conditioner of the above embodiment.

[0110] In addition, the logic instructions in the memory 520 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

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

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

[0113] Combination Figure 6 As shown, an embodiment of the present disclosure provides an energy storage air conditioner 600, including: an air conditioner body, and the above-mentioned control device 400 for the energy storage air conditioner. The control device 400 for the energy storage air conditioner is installed on the air conditioner body. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. It can be understood by those skilled in the art that the control device 400 for the energy storage air conditioner can be adapted to a feasible product body, thereby realizing other feasible embodiments.

[0114] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for the energy storage air conditioner.

[0115] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0116] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0117] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0118] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0119] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0120] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, 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 they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may 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 comprising a water cooling unit and a battery, the water cooling unit being used to control the battery temperature, characterized in that: The control method for energy storage air conditioner includes: Get the battery temperature and the water outlet temperature of the water cooling unit; Determine a water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature; Determine the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature; The compressor operating frequency is adjusted according to the outlet water temperature and the target outlet water temperature.

2. The control method for energy storage air conditioner according to claim 1, characterized in that: The steps of determining the outlet water temperature compensation value according to the battery temperature include: Determine temperature parameters of the battery within a preset period; Determine the outlet water temperature compensation value according to the battery temperature parameters and the target battery temperature; The temperature parameter of the battery includes the maximum temperature of the battery or the average temperature of the battery within a preset period.

3. The control method for energy storage air conditioner according to claim 2, characterized in that: The step of determining the outlet water temperature compensation value according to the battery temperature parameter and the target battery temperature includes: determining a target parameter of the battery according to a temperature parameter of the battery and a target battery temperature; comparing a target parameter of the battery with a parameter threshold; According to the comparison result, determine the outlet water temperature compensation value; The target parameters of the battery include the difference between the maximum temperature of the battery and the target battery temperature, the difference between the average temperature of the battery and the target battery temperature, or the average temperature change rate of the battery.

4. The control method for energy storage air conditioner according to claim 1, characterized in that: The steps of determining the outlet water temperature compensation value according to the outlet water temperature and the battery temperature include: Calculate the difference between the battery temperature and the water outlet temperature at the end of the preset cycle; Compare the difference between the battery temperature and the outlet water temperature with a temperature difference threshold; According to the comparison result, the outlet water temperature compensation value is determined.

5. The control method for energy storage air conditioner according to claim 1, characterized in that: The steps of determining the outlet water temperature compensation value according to the outlet water temperature include: Calculate the rate of change of outlet water temperature within a preset period; comparing the rate of change of the outlet water temperature with a rate of change threshold; According to the comparison result, the outlet water temperature compensation value is determined.

6. The control method for energy storage air conditioner according to any one of claims 1 to 5, characterized in that: The step of determining the target outlet water temperature according to the outlet water temperature compensation value and the preset outlet water temperature comprises: Get the outlet water temperature compensation value; Determine the target compensation value according to the outlet water temperature compensation value; The target outlet water temperature is determined according to the target compensation value and the preset outlet water temperature.

7. The control method for energy storage air conditioner according to claim 6, characterized in that: The step of determining the target compensation value according to the outlet water temperature compensation value comprises: Get the number of outlet water temperature compensation values; When the number of outlet water temperature compensation values ​​is 1, the outlet water temperature compensation value is taken as the target compensation value; or, When there are multiple outlet water temperature compensation values, calculating the sum of the multiple outlet water temperature compensation values; The sum of the compensation values ​​is compared with the compensation threshold to determine the target compensation value.

8. The control method for energy storage air conditioner according to claim 7, characterized in that: The step of comparing the sum of the compensation values ​​with the compensation threshold to determine the target compensation value includes: When m0<M1, M1 is used as the target compensation value; or, In the case of M1<m0<M2, m0 is taken as the target compensation value; or, When M2<m0, M2 is taken 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.

9. The control method for energy storage air conditioner according to any one of claims 1 to 5, characterized in that: The steps of regulating the compressor operating frequency according to the outlet water temperature and the target outlet water temperature include: Calculate the difference between the outlet water temperature and the target outlet water temperature; comparing the difference between the outlet water temperature and the target outlet water temperature with a set threshold; According to the comparison result, the operating frequency of the compressor is adjusted.

10. An energy storage air conditioner, characterized in that: include: processor; and A memory storing program instructions, wherein the processor is configured to execute the control method for the energy storage air conditioner according to any one of claims 1 to 9 when running the program instructions.

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