Air conditioner and control method thereof

Abstract

The application belongs to the technical field of air conditioners, and specifically provides an air conditioner and a control method thereof. The air conditioner comprises an electricity storage module; the control method comprises the following steps: in response to the current time entering a normal period, obtaining an estimated power consumption of the air conditioner in a next peak period; obtaining an electricity storage amount of the electricity storage module in a valley period; calculating a difference between the estimated power consumption and the electricity storage amount; judging whether the difference is greater than zero, so as to control the electricity storage module to supply power to the air conditioner or charge in the normal period according to the judgment result. The application aims to solve the problem that the electricity storage module in the existing air conditioner can only charge in the valley period and cannot meet the power demand of the air conditioner in the peak period, and can reduce the operation cost of the air conditioner in the peak period and is also beneficial to relieving the power distribution pressure of the power grid in the peak period.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly provides an air conditioner and a control method thereof. BACKGROUND

[0002] At present, in order to alleviate the power distribution pressure of the power grid during the peak period, many places adopt the time-of-use electricity pricing method of peak and valley to encourage users to reasonably arrange the electricity use time.

[0003] As one of the indispensable electrical appliances for people, the air conditioner can utilize the price difference existing in different electricity use periods and additionally add an electricity storage module in the air conditioner, so that the electricity storage module is charged during the valley period and discharged during the peak period, thereby reducing the operation cost of the air conditioner during the peak period.

[0004] However, the existing electricity storage module in the air conditioner can only be charged during the valley period and cannot meet the electricity demand of the air conditioner during the peak period. Therefore, there is an urgent need for an air conditioner to solve the above problems. SUMMARY

[0005] An object of the application is to provide an air conditioner capable of reducing the operation cost during the peak period.

[0006] Another object of the application is to utilize the price difference of different electricity use periods to select the start-up power supply mode with the lowest cost, thereby further reducing the operation cost of the air conditioner.

[0007] To achieve the above object, the application provides a control method of an air conditioner, wherein the air conditioner comprises an electricity storage module; and the control method comprises the following steps:

[0008] In response to the current time entering the normal period, the estimated power consumption of the air conditioner in the next peak period is obtained.

[0009] The electricity storage amount of the electricity storage module during the valley period is obtained.

[0010] The difference between the estimated power consumption and the electricity storage amount is calculated.

[0011] It is judged whether the difference is greater than zero, and the electricity storage module is controlled to supply power to the air conditioner or be charged during the normal period according to the judgment result.

[0012] Further, the step of obtaining the estimated power consumption of the air conditioner in the next peak period in response to the current time entering the normal period comprises the following steps:

[0013] obtaining the running time and the running power of the air conditioner in the peak period of all running days; and calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and the running power of the air conditioner in the peak period of all running days.

[0014] Further, the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and the running power of the air conditioner in the peak period of all running days comprises:

[0015] when the running cycle n of the air conditioner is 1 and the running day d is not 1, the estimated power consumption Q of the air conditioner in the next peak period is calculated by using the following formula: p1,d Q p1,d =∑(T p1,1 *P p1,1 +…+T p1,(d-1) *P p1,(d-1) ) / (d-1), (d∈2,…,6,7).

[0016] wherein Q p1,d is the estimated power consumption of the power storage module in the next peak period on the dth day of the first running cycle, T p1,(d-1) is the running time of the air conditioner in the peak period on the (d-1)th day of the first running cycle, and P p1,(d-1) is the running power of the air conditioner in the peak period on the (d-1)th day of the first running cycle.

[0017] Further, the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and the running power of the air conditioner in the peak period of all running days comprises:

[0018] when the running cycle n of the air conditioner is not 1, the estimated power consumption Q of the air conditioner in the next peak period is calculated by using the following formula: pn,d Q pn,d =∑(T p1,d *P p1,d +…+T p(n-1),d *P p(n-1),d ) / (n-1), (d∈1,2,…,6,7).

[0019] wherein Q pn,d is the estimated power consumption of the power storage module in the next peak period on the dth day of the n-th running cycle, T p(n-1),d is the running time of the air conditioner in the peak period on the dth day of the (n-1)-th running cycle, and P p(n-1),d is the running power of the air conditioner in the peak period on the dth day of the (n-1)-th running cycle.

[0020] Further, the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and the running power of the peak period in all running days, comprises: when the running cycle n=1 and the running day d=1, the running power P P1,1 of the air conditioner in the peak period=0, the running time T p1,1 of the air conditioner in the peak period=0, and the estimated power consumption Q p1,1 of the air conditioner=0.

[0021] Further, the step of obtaining the power storage amount of the power storage module in the valley period, comprises: calculating the power storage amount Q V of the power storage module in the valley period according to the charging power P V and the charging time T V of the power storage module in the valley period by using the following formula: Q V =P V *T V .

[0022] Further, the step of judging whether the difference is greater than zero to control the power storage module to supply power to the air conditioner or to charge in the normal period according to the judgment result, comprises: if the difference is greater than zero, controlling the power storage module to start charging; if the difference is less than zero, controlling the power storage module to supply power to the air conditioner, and the current maximum power supply value of the power storage module is the absolute value of the difference; and if the difference is equal to zero, the power storage module does not charge or discharge.

[0023] Further, the control method further comprises: judging whether the time length from the current time to the peak period reaches the working time length required for the air conditioner to reach the target temperature; if the working time length is reached, obtaining the current dischargeable amount Q 放 of the power storage module; calculating the power consumption Q s required for the air conditioner to reach the target temperature; judging whether Q 放 is less than Q s ; if Q 放 Q s , determining the power supply mode with the lowest start cost of the air conditioner according to the electricity price of the current period and the peak period.

[0024] Further, the step of judging whether Q 放 is less than Q s , comprises: if Q 放 Q s , controlling the power storage module to supply power to the air conditioner in the peak period.

[0025] Further, the step of obtaining the current dischargeable amount Q 放The steps include: based on the current state of charge (SOC) of the energy storage module and the capacity (Q) of the energy storage module... b The current discharge capacity Q of the energy storage module is calculated using the following formula. 放 Q 放 =(SOC-SOC) min )*Q b Among them, SOC min This is the minimum state of charge value of the energy storage module.

[0026] Furthermore, the calculation of the power consumption Q required for the air conditioner to reach the target temperature... s The steps include: obtaining the time t required for the air conditioner to reach the target temperature. s The power consumption of the air conditioner is calculated using the following formula: Q s =∑t s *P s , where P s The power required for the air conditioner to reach the target temperature.

[0027] Furthermore, the step of determining the power supply method with the lowest start-up cost for the air conditioner based on the electricity price during the current and peak periods includes: calculating the start-up cost coefficient C of the air conditioner. gap ; Determine C gap Is it greater than 0? If C gap If the value is greater than 0, the air conditioner will generate a reminder message to remind the user to turn on the air conditioner, thus minimizing the cost of preheating / cooling the air conditioner.

[0028] Furthermore, the calculation of the air conditioner's start-up cost coefficient C... gap The steps include:

[0029] C gap =∑t s *P s *C p -(∑t s *P s *C o +∑t s *P r *C p ), where C gap t is the startup cost coefficient. s P is the time required for the air conditioner to reach the target temperature. s P is the power required for the air conditioner to reach the target temperature. r C is the operating power of the air conditioner after it reaches the target temperature. p For peak-hour electricity prices, C o This represents the electricity price for the current period.

[0030] Furthermore, the step of controlling the air conditioner to generate a reminder message to remind the user to turn on the air conditioner includes: based on the start-up cost coefficient C gap The preset time T is calculated using the following formula. r :T r =C gap / P r , where P r This refers to the operating power of the air conditioner after it reaches the target temperature; and

[0031] Remind users at a preset time T after the peak period begins r The unit is turned on internally to minimize the cost of preheating / cooling the air conditioner.

[0032] Furthermore, an air conditioner includes a power storage module and a control module; the control module includes a controller, a memory, and execution instructions stored in the memory, the execution instructions being configured to enable the air conditioner to perform any of the control methods described above when executed by the controller.

[0033] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this invention, by obtaining the estimated power consumption of the air conditioner during the next peak period and the energy storage module's energy storage capacity during the off-peak period, and calculating the difference between the estimated power consumption and the energy storage capacity, and after judging based on the calculated difference, the energy storage module is controlled to supply power to the air conditioner or charge during normal periods. This invention enables the energy storage module to be charged during normal periods, thus meeting the power demand of the air conditioner during peak periods, thereby reducing the operating costs of the air conditioner during peak periods and lowering user costs; simultaneously, it also helps alleviate the voltage distribution pressure on the power grid during peak periods.

[0034] Furthermore, by determining the current discharge capacity Q of the energy storage module when the time remaining before the peak period reaches the operating time required for the air conditioner to reach the target temperature, the energy storage module's current discharge capacity Q is determined. 放 Is it less than the power consumption Q required for the air conditioner to reach the target temperature? s If Q 放 <Q s The invention determines the lowest-cost power supply method for starting the air conditioner based on the electricity price difference between the current and peak periods. By utilizing the price difference between peak and off-peak hours to select the lowest-cost power supply method, the operating cost of the air conditioner is reduced, thereby further reducing the user's operating costs and improving the user experience. Attached Figure Description

[0035] In order to more clearly illustrate the technical solutions of the present application, hereinafter, some embodiments of the present application will be described with reference to the accompanying drawings. It should be understood by those skilled in the art that the components or parts indicated by the same reference signs in different drawings are the same or similar; the drawings of the present application are not necessarily drawn to scale with respect to each other.

[0036] In the drawings:

[0037] Figure 1 is a flow chart of a control method of the air conditioner control storage module charging / discharging in the normal period in some embodiments of the present application;

[0038] Figure 2 is a flow chart of a control method of the air conditioner confirming the power supply mode when starting in some embodiments of the present application;

[0039] Figure 3 is Figure 2 is a flow chart of a specific control method of step S250;

[0040] Figure 4 is a flow chart of a control method of the air conditioner confirming the power supply mode in the peak period in some embodiments of the present application;

[0041] Figure 5 is a flow chart of a control method of the air conditioner confirming the power supply mode in the valley period in some embodiments of the present application;

[0042] Figure 6 is a working principle diagram of the air conditioner part circuit in some embodiments of the present application;

[0043] Figure 7 is a functional block diagram of the air conditioner in some embodiments of the present application. DETAILED DESCRIPTION

[0044] At present, in order to alleviate the power distribution pressure of the power grid in the peak period, many places have adopted the time-of-use electricity pricing method to encourage users to reasonably arrange the electricity use time. The present application makes full use of the characteristics of the price difference existing in different electricity use periods, and provides an air conditioner 100, which comprises a storage module 1, and uses the storage property of the storage module 1 to control the air conditioner 100 to charge the storage module 1 in the normal period. Compared with the existing air conditioner 100 capable of storing electricity, which can only charge in the valley period and cannot meet the storage load of the air conditioner 100 in the peak period, the air conditioner 100 in the present embodiment can not only control the storage module 1 to charge in the valley period, but also can charge in the normal period, effectively alleviating the problem of large power distribution pressure of the power grid in the peak period.

[0045] Generally, the electricity price period is divided into three periods, namely peak period, valley period and flat period, each period is about eight hours, and the division of electricity price period may be different for different regions, which will not be described here.

[0046] Since the air conditioner 100 needs to quickly rise or fall to the target temperature after starting, the compressor 2 in the air conditioner 100 needs to operate at high frequency, at this time, if it is in the peak period, a relatively high starting cost is required. Therefore, the control method of the air conditioner 100 of the embodiment not only includes that the power storage module 1 can be controlled to charge in the flat period according to the power consumption in the peak period, but also includes selecting the power supply mode with lower starting cost in the current period according to the price difference of each period, so as to reduce the use cost of the user and improve the use experience of the user.

[0047] Reference will be made below Figures 1 to 5 The control method of the air conditioner 100 will be described in detail. Figure 1 is a flow chart of the control method of the air conditioner 100 in some embodiments of the application for controlling the power storage module 1 to charge / discharging in the flat period; Figure 2 is a flow chart of the control method of the air conditioner 100 in some embodiments of the application for confirming the power supply mode when starting; Figure 3 is Figure 2 is a flow chart of the specific control method of step S250; Figure 4 is a flow chart of the control method of the air conditioner 100 in some embodiments of the application for confirming the power supply mode in the peak period; Figure 5 is a flow chart of the control method of the air conditioner 100 in some embodiments of the application for confirming the power supply mode in the valley period.

[0048] As shown in Figure 1 , the control method of the air conditioner 100 generally includes:

[0049] Step S110, in response to the current time entering the flat period, obtaining the estimated power consumption of the air conditioner 100 in the next peak period.

[0050] Among them, the estimated power consumption Q pn,d of the air conditioner 100 in the next peak period can be calculated and estimated by the power consumption in the peak period of all running days of the air conditioner 100; or, a prediction model can also be generated by training all running parameters in the peak period, and the estimated power consumption can be obtained by the prediction model.

[0051] Specifically, in some embodiments of the present invention, the step of obtaining the estimated power consumption of the air conditioner 100 in the next peak period may include: obtaining the running time and operating power of the air conditioner 100 during peak periods in all operating days; and calculating the estimated power consumption of the air conditioner 100 in the next peak period based on the running time and operating power during peak periods in all operating days.

[0052] Technicians discovered that the power consumption of air conditioner 100 during peak hours exhibits a certain regularity throughout its entire operating cycle (i.e., heating and cooling cycles). To illustrate this regularity, the technicians divided all operating days within the entire operating cycle (heating and cooling cycles) into multiple smaller operating cycles n, with each week constituting one smaller operating cycle n. Therefore, the number of operating days within each smaller operating cycle is d = 1, 2, ..., 6, 7. For ease of description, the term "smaller operating cycle n" will be consistently used to describe the relevant characteristics. Furthermore, based on the acquisition and analysis of the air conditioner 100's peak-hour operating power and operating length, it was found that the estimated power consumption for the next peak hour, calculated according to the following pattern, most closely approximates the daily peak-hour power consumption of air conditioner 100:

[0053] When the operating cycle n = 1 and the number of operating days d = 1, then the operating power P of the air conditioner 100 during peak hours is... P1,1 =0, Peak Hour Running Time T p1,1 =0, estimated power consumption Q p1,1 =0. Since the air conditioner 100 has just started running, the peak power P is 0. P1,1 and runtime T p1,1 The default value is 0, therefore the estimated power consumption Q for the next peak period is... p1,1 It is also set to 0 by default.

[0054] In other embodiments of the present invention, when the operating cycle n=1 and the number of operating days d=1, the charging amount of the energy storage module 1 during normal periods can be used as the estimated power consumption Q of the air conditioner 100 during the next peak period. p1,1 Q p1,1 =Q V Among them, Q V This represents the charging amount of the energy storage module 1 during normal operation.

[0055] When the operating cycle n of air conditioner 100 is 1 and the number of operating days d ≠ 1, the estimated power consumption Q of air conditioner 100 during the next peak period can be calculated using the following formula. p1,d for:

[0056] Qp1,d =∑(T) p1,1 *P p1,1 +…+,T p1,(d-1) *P p1,(d-1) ) / (d-1), (d∈2,…,6,7);

[0057] Among them, Q p1,d T represents the estimated power consumption of the energy storage module 1 during the next peak period on day d of the first operating cycle. p1,1 P represents the operating time of air conditioner 100 during the peak period on the first day of the first operating cycle. p1,1 T represents the operating power of air conditioner 100 during the peak period on the first day of the first operating cycle. p1,(d-1) P represents the operating time of air conditioner 100 during the peak period on day d-1 of the first operating cycle. p1,(d-1) The operating power of air conditioner 100 during the peak period of day d-1 of the first operating cycle.

[0058] When the operating cycle n of the air conditioner 100 is not equal to 1, the estimated power consumption Q of the air conditioner 100 during the next peak period is calculated using the following formula. pn,d for:

[0059] Q pn,d =∑(T) p1,d *P p1,d +…+T p(n-1),d *P p(n-1),d ) / (n-1), (d∈1,2,…,6,7);

[0060] Among them, Q pn,d T represents the estimated power consumption of energy storage module 1 on day d of the nth operating cycle during the next peak period. p1,d P represents the operating time of air conditioner 100 during the peak period on day d of the first operating cycle. p1,d T represents the operating power of air conditioner 100 during the peak period on day d of the first operating cycle. p(n-1),d Let P be the operating time of air conditioner 100 during the peak period on day d of the (n-1)th operating cycle. p(n-1),d Let be the operating power of air conditioner 100 during the peak period on day d of the n-1th operating cycle.

[0061] Based on the above pattern, the power consumption of an air conditioner during the next peak period can be estimated.

[0062] Furthermore, in some embodiments of the present invention, the step of obtaining the estimated power consumption of the air conditioner 100 during the next peak period may further include: after entering the normal period at the current time, obtaining the operating power and duration of the air conditioner 100 during the peak period of the previous day, the estimated power consumption of the air conditioner 100 during the next peak period, and the environmental parameters of the current day; training the model with the operating power and duration of all peak periods, the estimated power consumption of the air conditioner 100 during the next peak period, and the environmental parameters; and using the operating power and duration of the previous day's peak period or the current environmental parameters as input to output the estimated power consumption of the air conditioner 100 during the next peak period. The environmental parameters may include: indoor temperature, humidity, and air quality; outdoor temperature, humidity, and air quality, etc.

[0063] Step S120: Obtain the energy storage capacity of the energy storage module 1 during off-peak hours. Based on the charging power P of the energy storage module 1 during off-peak hours... V and charging time T V The energy storage capacity Q of energy storage module 1 during off-peak hours is calculated using the following formula. V :

[0064] Q V =P V *T V .

[0065] Among them, the charging power P of the energy storage module 1 during off-peak hours V This represents the actual operating power of air conditioner 100 during off-peak hours.

[0066] Step S130: Calculate the difference between the estimated power consumption and the stored power. The formula for calculating the difference ΔQ between the estimated power consumption and the stored power is: ΔQ = Q pn,d -Q V .

[0067] Step S140: Determine whether the difference is greater than zero, and control the energy storage module 1 to supply power to the air conditioner 100 or charge it during normal periods based on the determination result.

[0068] Based on the estimated power consumption Q of air conditioner 100 during the next peak period pn,d The energy storage capacity Q of energy storage module 1 during off-peak hours V The difference ΔQ indicates the amount of charging required by the energy storage module 1 during normal periods or the current discharge capacity of the energy storage module 1. When the air conditioner 100's estimated power consumption Q during peak hours... pn,d The amount of charge Q of the energy storage module 1 during off-peak hours is greater than that of the energy storage module 1. V The difference between the two is ΔQ, which represents the amount of electricity stored by the energy storage module 1 during normal periods; when the air conditioner 100 consumes an estimated amount of electricity during peak periods, ΔQ represents the amount of electricity stored by the module 1 during normal periods. pn,d The amount of charge Q of the energy storage module 1 during off-peak hours is less than the amount of charge Q.V The absolute value of this difference ΔQ is the current discharge value of the energy storage module 1. When the air conditioner 100 has an estimated power consumption Q during peak hours... pn,d Equals the charging amount Q of energy storage module 1 during off-peak hours. V The energy storage module 1 neither charges nor discharges.

[0069] In this embodiment, step S140 includes the following parallel steps:

[0070] In step S141, if the difference is greater than zero, the energy storage module 1 is controlled to start charging. At this time, when the required charging value of the energy storage module 1 is this difference, the estimated power consumption during peak hours can be met. However, since the estimated power consumption during the next peak period may deviate, the energy storage module 1 can continue charging after the charging amount during normal periods meets the estimated power consumption (i.e., the charging value equals the difference). However, the total energy storage capacity of the energy storage module 1 during normal and off-peak periods cannot exceed the maximum state of charge value of the energy storage module 1 to avoid overcharging and damage to the energy storage module 1.

[0071] In step S142, if the difference is less than zero, the energy storage module 1 is controlled to supply power to the air conditioner 100, and the current maximum power supply value of the energy storage module 1 is the absolute value of the difference.

[0072] In step S143, if the difference is zero, the energy storage module 1 will neither charge nor discharge.

[0073] like Figure 2 As shown, in some other embodiments of the present invention, the control method of the air conditioner 100 further includes:

[0074] Step S210: Determine whether the current time is still far from the peak period and whether the air conditioner 100 has been operating for the time required to reach the target temperature.

[0075] The method for obtaining the operating time required for the air conditioner 100 to reach the target temperature is as follows: Obtain the target temperature that the air conditioner 100 aims to achieve, and calculate the operating time required to reach the target temperature by dividing it by the time required for the air conditioner 100 to rise or fall by one unit of temperature. The time required for the air conditioner 100 to rise or fall by one unit of temperature can be obtained through repeated testing in different working environments and operating modes, yielding an empirical value that can be used as the time required for the air conditioner 100 to rise or fall by one unit of temperature.

[0076] Step S220: If the working time is reached, obtain the current discharge capacity Q of the energy storage module 1. 放 .

[0077] Wherein, the current dischargeable amount Q of the power storage module 1 放 The current state-of-charge value SOC of the power storage module 1 and the capacity Q of the power storage module 1 b are used to calculate the current dischargeable amount Q of the power storage module 1 by the following formula:

[0078] Q 放 = (SOC - SOC min ) * Q b ,

[0079] Wherein, SOC min is the minimum state-of-charge value of the power storage module 1. The capacity Q of the power storage module 1 b and the minimum state-of-charge value SOC min of the power storage module 1 can be configured according to the specifications of the power storage module 1 or the air conditioner 100.

[0080] The state-of-charge value SOC (full name: state-of-charge, refers to the charging state of the power storage module 1, also known as the remaining capacity) represents the ratio of the remaining dischargeable amount of the power storage module 1 after a period of use or long-term storage to the amount of the fully charged state. Excessive charging or discharging of the power storage module 1 will cause damage to it and reduce the service life of the power storage module 1. Therefore, a safety protection interval is set, and the state-of-charge value SOC of the power storage module 1 is within the safety protection interval, i.e. SOC min ≤ SOC ≤ SOC max , in order to protect the power storage module 1.

[0081] Step S230, calculate the power consumption Q s required for the air conditioner 100 to reach the target temperature. Obtain the time t s required for the air conditioner 100 to reach the target temperature, and calculate the power consumption of the air conditioner 100 by the following formula:

[0082] Q s = ∑t s * P s ,

[0083] Wherein, P s is the power required for the air conditioner 100 to reach the target temperature, and the power P s is the rated power of the air conditioner 100 to reach the target temperature.

[0084] Step S240, determine whether Q 放 is less than Q s .

[0085] Step S250, if Q 放 < Q sIf so, the power supply mode with the lowest cost of starting up the air conditioner 100 is determined according to the electricity price of the current period and the peak period.

[0086] Step S260, if Q 放 ≥ Q s , the power storage module 1 is controlled to supply power to the air conditioner 100 in the peak period.

[0087] As shown in FIG. 2, in other embodiments of the present application, step S250 includes: Figure 3

[0088] Step S251, the cost coefficient C gap of starting up the air conditioner 100 is calculated.

[0089] The step of calculating the cost coefficient of starting up the air conditioner 100 includes: obtaining the time and power required for the air conditioner 100 to reach the target temperature, the running power of the air conditioner 100 after reaching the target temperature, the electricity price of the peak period and the electricity price of the current period; and calculating the cost coefficient C gap according to the obtained time and power required for the air conditioner 100 to reach the target temperature, the running power of the air conditioner 100 after reaching the target temperature, the electricity price of the peak period and the electricity price of the current period, by using the following formula:

[0090] C gap =∑t s *P s *C p -(∑t s *P s *C o +∑t s *P r *C p ,

[0091] wherein C gap is the cost coefficient, t s is the time required for the air conditioner 100 to reach the target temperature, P s is the power required for the air conditioner 100 to reach the target temperature, P r is the running power of the air conditioner 100 after reaching the target temperature, C p is the electricity price of the peak period, and C o is the electricity price of the current period.

[0092] Step S252, it is judged whether C gap is greater than 0.

[0093] Step S253, if C gap > 0, the air conditioner 100 is controlled to generate a reminder information to remind the user to start up the air conditioner 100, so that the cost of preheating / cooling of the air conditioner 100 is the lowest. ​

[0094] Step S254, if C gap If C ≤ 0, then the energy storage module 1 supplies power to the air conditioner 100 during peak hours. gap ≤0 indicates that the preheating / cooling cost of air conditioner 100 is relatively high, and the start-up cost is lowest when the air conditioner 100 is powered by the energy storage module 1.

[0095] In this embodiment, step S253 may include: based on the startup cost coefficient C gap The preset time T is calculated using the following formula. r :

[0096] T r =C gap / P r ,

[0097] Among them, P r This refers to the operating power of the air conditioner after it reaches the target temperature (100°C); and it reminds the user of the preset time T after the peak period begins. r Turn on the air conditioner internally to minimize the cost of preheating / cooling at 100%.

[0098] like Figure 4 As shown, in other embodiments of the present invention, the control method of the air conditioner 100 further includes:

[0099] Step S310: In response to the fact that the current time has entered the peak period, obtain the current state of charge (SOC) value of the energy storage module 1;

[0100] Step S320: Determine whether the state of charge (SOC) value is greater than the minimum state of charge (SOC) value. min ;

[0101] Step S330, if SOC≤SOC min Then, the air conditioner 100 is controlled to generate a reminder message to remind the user to turn on the air conditioner 100, so that the preheating / cooling cost of the air conditioner 100 is minimized.

[0102] Step S340, if SOC > SOC min Then, the energy storage module 1 will supply power to the air conditioner 100.

[0103] like Figure 5 As shown, in other embodiments of the present invention, the control method of the air conditioner 100 further includes:

[0104] Step S410: In response to the current time entering a low period, obtain the current state of charge (SOC) value of the energy storage module 1.

[0105] Step S420: Determine whether the current state of charge (SOC) is lower than the maximum state of charge (SOC).max ;

[0106] Step S430, if SOC < SOC max , the control storage module 1 to charge;

[0107] Step S440, if SOC ≥ SOC max , the storage module 1 is not charged and discharged.

[0108] The above is the introduction of the control method of air conditioner 100. Among them, it needs to be explained is that the detection of the above parameters and the means of obtaining itself (sensing device, timing device and detection equipment, such as current detection equipment, voltage detection equipment itself) are known to those skilled in the art, and the detection means of the parameters itself is not described here.

[0109] The structure of air conditioner 100 will be described below with reference to Figure 6 and Figure 7 . Figure 6 is the working principle diagram of part of the circuit of air conditioner 100 in some embodiments of the present application; Figure 7 is the functional block diagram of air conditioner 100 in some embodiments of the present application.

[0110] As Figure 6 shown, the air conditioner 100 generally also includes: compressor 2, first converter 3, second converter 4. The output end of the power grid is electrically connected with the input end of the first converter 3, and the output end of the first converter 3 is electrically connected with the compressor 2 and the storage module 1 of the air conditioner 100 respectively, so that the compressor 2 can supply power to the indoor unit and the outdoor unit of the air conditioner 100, and the storage module 1 can be charged by the power grid. The input end of the second converter 4 is electrically connected with the output end of the storage module 1, and the output end of the second converter 4 is electrically connected with the input end of the compressor 2 of the air conditioner 100, so that the storage module 1 can supply power to the indoor unit and the outdoor unit of the air conditioner 100. Among them, the first converter 3 is AC-DC (alternating current to direct current), and the second converter 4 is DC-DC (direct current to direct current).

[0111] As Figure 7 shown, the air conditioner 100 further comprises a control module, the control module comprising a controller 5 and a memory 6, the controller 5 being electrically connected with the storage module 1, so that the storage module 1 can be charged and discharged to the air conditioner 100.

[0112] The controller 5 is an integrated circuit chip having the ability to process signals. The controller 5 can be a general purpose processor, such as a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, a microprocessor, and other any conventional processor.

[0113] The memory 6 is configured to store executable instructions, which are specifically computer programs capable of being executed. Further, the executable instructions stored by the memory 6 are configured to enable the air conditioner 100 to perform the control method described in any of the preceding embodiments when executed by the controller 5.

[0114] The memory 6 can include a memory and a non-volatile memory, and provide the controller 5 with executable instructions and data. Exemplarily, the memory can be a high-speed random-access memory (RAM), and the non-volatile memory can be at least one disk memory.

[0115] As can be understood by those skilled in the art, the present application controls the power supply of the power storage module 1 to the air conditioner 100 or charging of the power storage module 1 in the off-peak period by obtaining the estimated power consumption of the air conditioner 100 in the next peak period and the power storage amount of the power storage module 1 in the off-peak period, calculating the difference between the estimated power consumption and the power storage amount, and judging the result of the calculation. The present application increases the power storage amount of the power storage module 1 by charging the power storage module 1 in the off-peak period, thereby reducing the operation cost of the air conditioner 100 in the peak period and the use cost of the user. Meanwhile, the present application is also beneficial to relieving the power distribution pressure of the power grid in the peak period.

[0116] Further, the discharging amount Q 放 of the power storage module 1 is judged when the time length from the current time to the peak period reaches the working time length required for the air conditioner 100 to reach the target temperature, and the discharging amount Q s of the power storage module 1 is less than the power consumption Q 放 required for the air conditioner 100 to reach the target temperature; and the power storage module 1 is controlled to supply power to the air conditioner 100 or charge in the off-peak period when the discharging amount Q sTherefore, the power supply mode with the lowest start cost of the air conditioner 100 is determined according to the electricity price of the current period and the peak period. The application selects the power supply mode with the lowest start cost by using the electricity price difference between the peak period and the valley period, reduces the start operation cost of the air conditioner, and further reduces the use cost of the user, which is beneficial to improve the use experience of the user.

[0117] So far, the technical solutions of the application have been described in combination with the foregoing embodiments, but those skilled in the art can easily understand that the protection scope of the application is not limited to these specific embodiments. Those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments without deviating from the technical principles of the application, and can make equivalent changes or replacements to the related technical features, and any changes, equivalent replacements, improvements, etc. within the technical concept and / or technical principles of the application will fall within the protection scope of the application.

Claims

1. A control method of an air conditioner, the air conditioner including an electricity storage module. The control method comprises: in response to the current time entering the flat period, obtaining the estimated power consumption of the air conditioner in the next peak period; obtaining the power storage amount of the power storage module in the valley period; calculating the difference between the estimated power consumption and the power storage amount; determining whether the difference is greater than zero, and controlling the power storage module to supply power to the air conditioner or charge in the flat period according to the determination result; determining whether the length of time from the current time to the peak period reaches the working length of time required for the air conditioner to reach the target temperature; if the working time length is reached, the current dischargeable amount Q of the power storage module is acquired 放 ; calculating an amount of power Q required for the air conditioner to reach the target temperature s ; Judge Q 放 whether less than Q s ; If Q 放 <Q s Then, the power supply method with the lowest start-up cost for the air conditioner is determined based on the electricity price during the current period and the peak period. the step of determining the power supply mode in which the air conditioner has the lowest start-up cost according to the electricity prices of the current period and the peak period comprises: calculating a start-up cost coefficient C of the air conditioner gap ; Judgment C gap whether greater than 0; If C gap > 0, the air conditioner generates a prompt information to prompt the user to turn on the air conditioner, so that the cost of preheating / cooling of the air conditioner is the lowest. The calculation of the air conditioner's start-up cost coefficient C gap The steps include: C gap =∑t s *P s *C p -(∑t s *P s *C o +∑t s *P r *C p ), Wherein, C gap is the cost of starting, t s is the time required for the air conditioner to reach the target temperature, P s is the power required for the air conditioner to reach the target temperature, P r is the running power of the air conditioner after reaching the target temperature, C p is the electricity price during peak hours, C o is the electricity price of the current period.

2. The control method of the air conditioner according to claim 1, wherein the step of determining whether the difference is greater than zero, and controlling the power storage module to supply power to the air conditioner or charge in the flat period according to the determination result comprises: if the difference is greater than zero, controlling the power storage module to start charging; if the difference is less than zero, controlling the power storage module to supply power to the air conditioner, and the current maximum power supply value of the power storage module is the absolute value of the difference; if the difference is equal to zero, the power storage module does not charge or discharge.

3. The control method of the air conditioner according to claim 1, wherein the step of obtaining the estimated power consumption of the air conditioner in the next peak period in response to the current time entering the flat period comprises: obtaining the running time and running power of the air conditioner in the peak period within all running days; calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and running power of the air conditioner in the peak period within all running days.

4. The control method of the air conditioner according to claim 3, wherein the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and running power of the air conditioner in the peak period within all running days comprises: When the running cycle n of the air conditioner is 1 and the running day d ≠ 1, the estimated power consumption Q of the air conditioner in the next peak period is calculated by using the following formula p1,d is: Q p1,d =∑(T p1,1 *P p1,1 +…+,T p1,(d-1) *P p1,(d-1) ) / (d-1), (d∈2,…,6,7); wherein Q p1,d is the estimated power consumption of the power storage module in the next peak period on the dth day of the first operating cycle, T p1,(d-1) is the operating time of the air conditioner in the peak period on the (d-1)th day of the first operating cycle, P p1,(d-1) is the operating power of the air conditioner in the peak period on the (d-1)th day of the first operating cycle.

5. The control method of the air conditioner according to claim 3, wherein the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and running power of the air conditioner in the peak period within all running days comprises: When the running cycle n≠1 of the air conditioner, the estimated power consumption Q of the next peak period of the air conditioner is calculated by using the following formula pn,d is: Q pn,d =∑(T p1,d *P p1,d +…+T p(n-1),d *P p(n-1),d ) / (n-1), (d∈1,2,…,6,7); wherein Q pn,d is the estimated power consumption of the power storage module in the next peak period on the dth day of the nth operating cycle, T p(n-1),d is the operating time of the air conditioner in the peak period on the dth day of the nth-1 operating cycle, P p(n-1),d is the operating power of the air conditioner in the peak period on the dth day of the nth-1 operating cycle.

6. The control method of the air conditioner according to claim 3, wherein the step of calculating the estimated power consumption of the air conditioner in the next peak period according to the running time and running power of the air conditioner in the peak period within all running days comprises: When the operating cycle of the air conditioner is n=1 and the number of operating days is d=1, then the operating power P of the air conditioner during peak hours is... P1,1 =0, Peak Hour Running Time T p1,1 =0, estimated power consumption Q p1,1 =0.

7. The control method of the air conditioner according to claim 1, wherein the step of obtaining the power storage amount of the power storage module in the valley period comprises: According to the charging power P of the power storage module during the valley period V and the charging duration T V , the power storage amount Q of the power storage module during the valley period is calculated by the following equation V : Q V = P V T V .

8. The control method of the air conditioner according to claim 1, wherein The step of determining Q 放 whether Q s is less than Q If Q 放 ≥ Q s , then control the power storage module to supply power to the air conditioner during peak hours.

9. The control method of the air conditioner according to claim 1, wherein the step of acquiring the current dischargeable amount Q of the power storage module 放 includes: According to the current state of charge value SOC of the electric storage module and the electric capacity Q of the electric storage module b The current dischargeable amount Q of the electric storage module is calculated by the following equation 放 : Q 放 = (SOC - SOC min )*Q b , wherein SOCmin is the minimum state of charge value of the power storage module. min is the minimum state of charge value of the power storage module.

10. The control method of the air conditioner according to claim 1, wherein calculating the power consumption Q required for the air conditioner to reach the target temperature s comprising: acquiring a time t required for the air conditioner to reach a target temperature s calculating the power consumption of the air conditioner by using the following formula: Q s =∑t s *P s , P = Ptarget + Pmin + Pmax s Ptarget is the power required for the air conditioner to reach the target temperature.

11. The control method of the air conditioner according to claim 1, wherein the step of controlling the air conditioner to generate a reminder information to remind the user to start the air conditioner comprises: According to the start-up cost coefficient C gap , the preset time T r is calculated by the following formula: T r = C gap / P r , Among them, P r The operating power of the air conditioner after reaching the target temperature; and Alerting the user at a preset time T after the start of the peak period r Turning on the air conditioner to minimize the cost of preheating / cooling.

12. An air conditioner comprising an electricity storage module and a control module; the control module comprising a controller, a memory and stored on the memory execution instructions arranged to enable the air conditioner to perform the control method of any one of claims 1 to 11 when executed by the controller.

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