Control method, energy storage power supply and storage medium

Abstract

The invention discloses a control method, an energy storage power source and a storage medium, the energy storage power source comprises a fan, and the method comprises the steps that temperature information, noise information and power consumption information of the energy storage power source are obtained, and the noise information and the power consumption information are determined based on the duty ratio of a control signal of the fan; calculating a first cost value corresponding to the temperature information of the energy storage power supply, a second cost value corresponding to the noise information and a third cost value corresponding to the power consumption information under different duty ratios of the fan; respectively calculating total cost values corresponding to different duty ratios based on the first cost values, the second cost values and the third cost values corresponding to different duty ratios; and controlling the fan to operate based on the duty ratio with the minimum total cost value. The fan is controlled to operate according to the duty ratio corresponding to the minimum cost value, so that the energy storage power supply realizes dynamic balance among improvement of energy efficiency, use safety and user experience, and the system stability is enhanced; the self-adaptability of the fan in different environments and use scenes is improved, and the applicability and expansibility of the energy storage power supply are improved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a control method, an energy storage power supply, and a non-volatile computer-readable storage medium. Background Art

[0002] With the widespread use of portable energy storage devices in scenarios such as outdoor camping, emergency power supply, and outdoor construction, the high-power components within these devices (such as inverters, battery packs, and MPPT modules) generate significant heat during charging and discharging. To ensure stable operation, active heat dissipation systems (e.g., cooling fans) are required.

[0003] In related technologies, the cooling system usually works based on the temperature control inside the energy storage device. However, in some specific scenarios, such as camping at night or other environments with high noise requirements, fan noise becomes a problem that cannot be ignored. Summary of the Invention

[0004] The embodiments of the present invention provide a control method, an energy storage power supply, and a storage medium to solve at least one of the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a control method for an energy storage power supply, wherein the energy storage power supply includes a fan, and the method includes:

[0006] Acquiring temperature information, noise information, and power consumption information of an energy storage power supply, wherein the noise information and the power consumption information are determined based on a duty cycle of a control signal of the fan;

[0007] Calculating, under different duty cycles of the fan, a first-generation value corresponding to the temperature information of the energy storage power supply, a second-generation value corresponding to the noise information, and a third-generation value corresponding to the power consumption information;

[0008] Based on the first generation value, the second generation value and the third generation value corresponding to the different duty cycles, respectively calculating the total cost value corresponding to the different duty cycles;

[0009] The fan is controlled to operate based on the duty cycle with the smallest total cost.

[0010] In a second aspect, the present application proposes an energy storage power supply, comprising:

[0011] fans; and

[0012] A controller is configured to execute a computer program to implement the control method described in any one of the above embodiments.

[0013] In a third aspect, the present application proposes a non-volatile computer-readable storage medium containing a computer program, which, when executed by a processor, enables the processor to execute the control method described in any of the above embodiments.

[0014] The control method, energy storage power supply, and storage medium of the embodiments of the present application obtain temperature information, noise information, and power consumption information of the energy storage power supply, where the noise information and power consumption information are determined based on the duty cycle of the fan control signal; then calculate the first-generation value corresponding to the temperature information of the energy storage power supply, the second-generation value corresponding to the noise information, and the third-generation value corresponding to the power consumption information of the energy storage power supply at different fan duty cycles; then calculate the total cost value corresponding to different duty cycles based on the first-generation value, second-generation value, and third-generation value corresponding to different duty cycles; finally, control the operation of the fan based on the duty cycle with the smallest total cost value, calculate the total cost value corresponding to different duty cycles based on the first-generation value, second-generation value, and third-generation value corresponding to different duty cycles, thereby determining the achievement of the three indicators of temperature, noise, and power consumption when the fan is operating at different duty cycles; finally, control the operation of the fan based on the duty cycle with the smallest total cost value, so that the fan can achieve an optimal compromise between the three indicators. While avoiding excessive temperature damage to the energy storage power supply, it can also minimize the generation of excessive noise and power consumption, thereby achieving a dynamic balance among the three indicators of temperature, noise, and power consumption.

[0015] In other words, based on temperature information, noise information and power consumption information, the first-generation value, second-generation value and third-generation value are calculated, and the fan operation is controlled according to the duty cycle corresponding to the minimum total value, so as to achieve multi-objective optimal speed regulation of the fan, so that the energy storage power supply can achieve a dynamic balance between improving energy efficiency, safety of use and user experience, and enhance system stability; moreover, it can also improve the adaptability of the fan in different environments and usage scenarios, and improve the applicability and scalability of the energy storage power supply.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of an application scenario of an energy storage power supply according to one embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of an energy storage power supply according to one embodiment of the present invention;

[0020] Figure 3is a flow chart of a control method according to one embodiment of the present invention;

[0021] Figure 4 is a flow chart of a control method according to one embodiment of the present invention;

[0022] Figure 5 is a flow chart of a control method according to one embodiment of the present invention;

[0023] Figure 6 is a flow chart of a control method according to one embodiment of the present invention;

[0024] Figure 7 is a flow chart of a control method according to one embodiment of the present invention;

[0025] Figure 8 is a flow chart of a control method according to one embodiment of the present invention;

[0026] Figure 9 is a flow chart of a control method according to one embodiment of the present invention;

[0027] Figure 10 is a flow chart of a control method according to one embodiment of the present invention;

[0028] Figure 11 is a flow chart of a control method according to one embodiment of the present invention;

[0029] Figure 12 is a flow chart of a control method according to one embodiment of the present invention;

[0030] Figure 13 is a schematic diagram of a module of a control device in certain embodiments of the present application;

[0031] Figure 14 It is a schematic diagram of the connection status of a non-volatile computer-readable storage medium and a processor in certain embodiments of the present application. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0037] Before describing the implementation of the present application in detail, the related technologies are further introduced.

[0038] With the widespread use of portable energy storage devices in scenarios such as outdoor camping, emergency power supply, and outdoor construction, the high-power components within these devices, such as inverters, battery packs, and Maximum Power Point Tracking (MPPT) modules, generate significant heat during charging and discharging. To ensure stable operation, active cooling systems (e.g., fans) are required.

[0039] Related technologies typically rely on temperature control within the energy storage device to control the cooling system. However, in certain scenarios, such as nighttime camping or other noise-sensitive environments, fan noise becomes a significant issue. Furthermore, the energy efficiency of the energy storage device is directly related to the overall battery life. Excessive energy consumption can lead to rapid battery depletion, impacting the user experience.

[0040] Therefore, fan control strategies driven by a single objective, such as temperature-prioritized control, cannot meet the dual requirements of noise control and energy efficiency optimization in different operating environments. In this case, existing heat dissipation control strategies have obvious shortcomings and cannot achieve a dynamic balance between temperature control, noise control, and energy efficiency optimization under different operating conditions.

[0041] In view of this, the present application proposes a control method and an energy storage power supply 100. Figure 1 and Figure 2 As shown, the control method provided by this application can be applied to Figure 1 and Figure 2 In the application scenario shown, the energy storage power supply 100 includes a fan 10 and a controller 20. The fan 10 can be, for example, a heat dissipation fan 10.

[0042] Optionally, the energy storage power supply 100 includes a housing 30 and multiple components. The multiple components are disposed within the housing 30. The components may be an inverter, a battery pack, an MPPT module, or other components required for charging and discharging the energy storage power supply 100. The fan 10 can dissipate heat and cool the components within the energy storage power supply 100 to maintain stable operation of the energy storage power supply 100.

[0043] Optionally, ventilation louvers 40 are provided on the housing 30 of the energy storage power supply 100 , through which air can enter the interior of the energy storage power supply 100 , and heat generated by components can also be discharged from the ventilation louvers 40 under the rotation of the heat dissipation fan 10 .

[0044] Alternatively, the controller 20 may be a microcontroller unit (MCU) (a microcomputer chip integrating multiple functions such as a central processing unit (CPU), memory, and input / output (I / O) interfaces), a digital signal processor (DSP) (a controller 20 for digital signal processing), etc. For ease of description, in the embodiments of the present application, the controller 20 is described as an MCU.

[0045] The control method of this application is described in detail below. Figure 3 The control method of the embodiment of the present application can be implemented by steps 011 to 014, which are described in detail below:

[0046] Step 011: Acquire temperature information, noise information, and power consumption information of the energy storage power supply, where the noise information and power consumption information are determined based on the duty cycle of the fan control signal.

[0047] The temperature information includes the maximum temperature value among the current temperature values ​​of each component; or the temperature information includes the average temperature of the current temperature values ​​of each component; or the temperature information includes the temperature of the internal space of the energy storage power supply.

[0048] See also Figure 4 Optionally, the control method further includes:

[0049] Step 015: Based on a preset mapping relationship, determine the noise information corresponding to different duty cycles. The preset mapping relationship is a mapping relationship between the duty cycle and the noise information.

[0050] The noise information N(d) may be the noise value when the fan rotates.

[0051] It can be understood that the fan speed is determined by the effective value of the driving voltage that drives the fan, while pulse width modulation (PWM) adjusts the duty cycle (the ratio of the high-level duration in a signal cycle to the total cycle time) to change the average voltage, thereby adjusting the fan speed. In other words, the fan speed varies under different duty cycles, and the fan speed can be represented by the duty cycle. When the fan rotates at different speeds, its noise level generally varies. Therefore, a preset mapping relationship between duty cycle and noise level can be established through table lookup or experimentation (for example, establishing a noise level of 25 decibels (dB) for a 20% duty cycle, 35dB for a 50% duty cycle, and 45dB for an 80% duty cycle). In subsequent use, the noise information of the energy storage power supply can be determined by simply looking up the noise level corresponding to different duty cycles according to the preset mapping relationship.

[0052] See also Figure 5 Optionally, the control method further includes:

[0053] Step 016: Obtain target power consumption, which is the power consumption when the fan rotates at maximum speed;

[0054] Step 017: Determine power consumption information based on the target power consumption and duty cycle.

[0055] The power consumption information may be the power consumption corresponding to when the fan rotates at any duty cycle. The power consumption information reflects the electric energy consumed when the fan operates at the current duty cycle.

[0056] The power consumption of the fan essentially depends on the power of the rotating shaft, that is, P∝T·ω, where P is the power consumption, T is the torque, and ω is the speed. The fan load is a typical wind resistance load (wind resistance torque), and the power required is proportional to the cube of the speed: P∝ω 3 Under PWM control, the duty cycle d corresponds approximately linearly to the fan speed: ω≈ω max ·d / 100%. Therefore, the power consumption of the fan P(d) can be regarded as: P∝(ω max (d / 100%) 3 ∝ω max 3 (d / 100%) 3 , approximate writing: P(d)∝(d / 100%) 3 , introduce the maximum power consumption P of the fan when it rotates at maximum speed max , we get: P max =k·ω max 3 (k is a proportional constant), therefore, the power consumption information P(d)≈P max (d / 100%) 3 .

[0057] Specifically, if the temperature inside the energy storage power supply exceeds the suitable operating temperature range of its components, it may cause unstable charging and discharging of the energy storage power supply, or even thermal runaway. Temperature information can be obtained by installing temperature sensors, thermistors, etc. inside the energy storage power supply. The fan speed can be determined by obtaining the duty cycle of the fan control signal, thereby determining the noise and power consumption information of the energy storage power supply.

[0058] Step 012: Calculate the first-generation value corresponding to the temperature information of the energy storage power supply, the second-generation value corresponding to the noise information, and the third-generation value corresponding to the power consumption information of the fan at different duty cycles.

[0059] Among them, the first generation value can be used as a quantitative evaluation indicator of temperature information, the second generation value can be used as a quantitative evaluation indicator of noise information, and the third generation value can be used as a quantitative evaluation indicator of power consumption information.

[0060] Step 013: Based on the first-generation value, the second-generation value, and the third-generation value corresponding to different duty cycles, the total cost values ​​corresponding to different duty cycles are calculated respectively.

[0061] Among them, for each duty cycle, the corresponding first-generation value, second-generation value and third-generation value are calculated, and then the total cost value of the first-generation value, second-generation value and third-generation value is calculated. The total cost value is a comprehensive evaluation result of the temperature information, noise information and power consumption information when the fan rotates at this duty cycle.

[0062] Step 014: Control the fan to operate based on the duty cycle with the smallest total cost value.

[0063] It is understandable that the fan control of the energy storage power supply needs to meet three indicators (temperature indicator, noise indicator and power consumption indicator) at the same time, and these three indicators may conflict with each other. For example, when increasing the fan speed to reduce the temperature to ensure the temperature indicator, it may increase noise and power consumption, making it difficult to achieve the noise and power consumption indicators. For another example, when reducing the fan speed to reduce the noise value to ensure the noise indicator, the temperature inside the energy storage power supply may rise, making it difficult to achieve the temperature indicator. By comparing the total cost values ​​corresponding to different duty cycles, when the total cost value is the smallest, it means that under this duty cycle, the fan can achieve the best compromise between the three indicators. While avoiding excessive temperature damage to the energy storage power supply, it can also avoid excessive noise generation and power consumption as much as possible, achieving a dynamic balance between the temperature indicator, noise indicator and power consumption indicator.

[0064] Therefore, the fan operation is controlled according to the duty cycle corresponding to the minimum total cost value, so that the fan can achieve a dynamic balance among temperature, noise and power consumption during operation.

[0065] In this way, by obtaining temperature information, noise information and power consumption information of the energy storage power supply, the noise information and power consumption information are determined based on the duty cycle of the fan control signal; then, the first-generation value corresponding to the temperature information of the energy storage power supply, the second-generation value corresponding to the noise information, and the third-generation value corresponding to the power consumption information of the fan at different duty cycles are calculated; then, based on the first-generation value, second-generation value and third-generation value corresponding to different duty cycles, the total cost corresponding to different duty cycles is calculated respectively; finally, based on the duty cycle with the smallest total cost value, the fan operation is controlled, and the total cost corresponding to different duty cycles is calculated by using the first-generation value, second-generation value and third-generation value corresponding to different duty cycles, so as to determine the achievement of the three indicators of temperature, noise and power consumption when the fan is running at different duty cycles. Finally, the fan operation is controlled according to the duty cycle with the smallest total cost value, so that the fan can achieve an optimal compromise between the three indicators, while avoiding excessive temperature damaging the energy storage power supply, and also avoiding excessive noise and power consumption as much as possible, thereby achieving a dynamic balance among the three indicators of temperature, noise and power consumption.

[0066] In other words, based on temperature information, noise information and power consumption information, the first-generation value, second-generation value and third-generation value are calculated, and the fan operation is controlled according to the duty cycle corresponding to the minimum total value, so as to achieve multi-objective optimal speed regulation of the fan, so that the energy storage power supply can achieve a dynamic balance between improving energy efficiency, safety of use and user experience, and enhance system stability; moreover, it can also improve the adaptability of the fan in different environments and usage scenarios, and improve the applicability and scalability of the energy storage power supply.

[0067] See also Figure 6 In some embodiments, step 012: calculating the first-generation value corresponding to the temperature information of the energy storage power supply, the second-generation value corresponding to the noise information, and the third-generation value corresponding to the power consumption information of the fan at different duty cycles includes:

[0068] Step 0121: determining a first generation value based on current temperature information and a preset temperature cost function, wherein the temperature cost function is determined based on the temperature information and a preset temperature value;

[0069] Step 0122: determining a second generation value based on noise information corresponding to the noise ratio and a preset noise cost function, wherein the noise cost function is determined based on the noise information and a preset noise value;

[0070] Step 0123: Determine the third generation value based on the power consumption information corresponding to the noise ratio and a preset power consumption cost function, wherein the power consumption cost function is determined based on the power consumption information and the preset power consumption value.

[0071] Among them, when the temperature of the energy storage power supply is greater than the preset temperature value, it can be considered that the working temperature at this time may cause the energy storage power supply to overheat and thermal runaway, and it is necessary to dissipate heat and cool down the energy storage power supply.

[0072] Among them, when the noise information of the fan rotation is greater than the preset noise value, it can be considered that the current noise value may affect the user and affect the user experience. It can be understood that the preset noise value can be adaptively set according to the application scenario of the energy storage power supply.

[0073] Among them, when the power consumption information is less than the preset power consumption value, it can be considered that the energy utilization efficiency is relatively high, and the energy storage power supply can ensure the performance of the fan while achieving energy-saving effects.

[0074] Specifically, the temperature cost function T can be constructed based on the current temperature information T1 and the preset temperature value Tref first:

[0075] T = T1 - Tref

[0076] To make the cost value more significant and avoid asymmetric processing of over-temperature (T > Tref) and low-temperature (T < Tref), therefore, the temperature cost function T1 can be: [[ID=十六]] [[ID=十七]]

[0077] [[ID=十八]]T = (T1 - Tref) 2

[0078] Similarly, the noise cost function N is constructed based on the noise information N(d) and the preset noise value Nref:

[0079] N = (N(d) - Nref) 2

[0080] The power consumption cost function P is constructed based on the power consumption information P(d) and the preset power consumption value Pref:

[0081] P = (P(d) - Pref) 2

[0082] Substitute the current temperature information T1 into the temperature cost function T to determine the first-generation cost value. Then, substitute the noise information N(d) corresponding to different duty cycles d into the noise cost function N respectively to determine each second-generation cost value. Substitute the power consumption information P(d) corresponding to different duty cycles d into the power consumption cost function P respectively to determine each third-generation cost value.

[0083] Please refer to Figure 7 , in some embodiments, step 013: Based on the first-generation cost value, second-generation cost value, and third-generation cost value corresponding to different duty cycles, calculate the total cost value corresponding to different duty cycles respectively, including:

[0084] Step 0131: Obtain a temperature weight of the temperature information, a noise weight of the noise information, and a power consumption weight of the power consumption information, wherein the temperature weight, the noise weight, and the power consumption weight are all greater than 0, and the sum of the temperature weight, the noise weight, and the power consumption weight is 1;

[0085] Step 0132: Based on the temperature weight values, noise weight values, and power consumption weight values ​​corresponding to different duty cycles, the total cost values ​​corresponding to different duty cycles are calculated respectively.

[0086] Optionally, the energy storage power supply includes a heat dissipation mode, a silent mode and a power consumption mode. In the heat dissipation mode, the temperature weight is greater than the noise weight and the power consumption weight; in the silent mode, the noise weight is greater than the temperature weight and the power consumption weight; in the power consumption mode, the power consumption weight is greater than the temperature weight and the noise weight.

[0087] Specifically, users can customize different temperature weights, noise weights, and power consumption weights according to different application scenarios. The temperature weights, noise weights, and power consumption weights reflect the importance of temperature indicators, noise indicators, and power consumption indicators to the operation of energy storage power supplies. For example, in application scenarios where heat dissipation is prioritized (for example, high temperatures during the day or high-load scenarios for energy storage power supplies), the temperature weight is greater than the noise weight and power consumption weight, while in application scenarios where silence is prioritized (for example, night scenes or quiet scenes such as camps), the noise weight is greater than the temperature weight and power consumption weight. However, in order to ensure the safe use of energy storage power supplies, the temperature weight can also be set to be greater than the power consumption weight; for another example, in application scenarios where energy saving is prioritized (for example, low light, low battery limit, etc.), the power consumption weight is prioritized and is greater than the temperature weight and noise weight.

[0088] Different modes can also be set according to different application scenarios, for example, heat dissipation mode, silent mode and power consumption mode. In heat dissipation mode, the temperature weight is greater than the noise weight and the power consumption weight. In heat dissipation mode, priority is given to the impact of temperature indicators on the energy storage power supply to ensure the heat dissipation of the energy storage power supply; in silent mode, the noise weight is greater than the temperature weight and the power consumption weight. In silent mode, priority is given to the impact of the noise value caused by the fan rotation on the user to ensure the user experience; in power consumption mode, the power consumption weight is greater than the temperature weight and the noise weight. In power consumption mode, priority is given to the battery life of the energy storage power supply.

[0089] It is understandable that the weight value can be set manually by the user, or determined by the controller by obtaining at least one of the ambient light intensity, electrical parameters of the energy storage power supply (such as current, voltage, remaining available capacity, etc.) and the current time period.

[0090] More specifically, the temperature cost function T can be reconstructed based on the temperature weight α and the temperature cost function:

[0091] T=α·(T1-Tref) 2

[0092] According to the noise weight β and the noise cost function, the noise cost function N is reconstructed:

[0093] N=β·(N(d)-Nref) 2

[0094] According to the power consumption weight γ and the power consumption cost function, the power consumption cost function P is reconstructed:

[0095] P = γ·(P(d)-Pref) 2

[0096] Then, according to the temperature cost function T, the noise cost function N and the power consumption cost function P, the total cost function J(d) is constructed:

[0097] J(d)=T+N+P

[0098] That is to say: J(d) = α·(T1-Tref) 2 +β·(N(d)-Nref) 2 +γ·(P(d)-Pref) 2

[0099] Among them, α+β+γ=1, and α∈[0,1], β∈[0,1], and γ∈[0,1].

[0100] Finally, by setting the duty cycle set, D = {d1, d2, ..., dn}D = \{d_1, d_2, ..., d_n\} (e.g., from 20% to 100%, with a duty cycle step of 5%, where the step size can be set according to the PWM accuracy supported by the hardware), each duty cycle is substituted into the total cost function J(d) to calculate the total cost value, and then the minimum total cost value: d* = argminJ(di) is selected. The fan's PWM is controlled according to d* to achieve the optimal fan speed that simultaneously meets the temperature index, noise index, and power consumption index.

[0101] For example, the maximum power consumption of the fan Pmax = 3 watts (W), the current temperature is T1 = 60 ° C, the preset temperature value Tref = 50 ° C, the preset noise value Nref = 28 dB, the preset power consumption value Pref = 1.5 W, the user selects the silent mode, in which α = 0.2, β = 0.6, γ = 0.2 is used as an example for explanation. When the duty cycle d = 50%, N (50%) = 29 dB, P (50%) = 3 * (0.5) 3 =0.375W, (T-Tref) 2 =(60-50) 2 =100, (N-Nref) 2 =(29-28) 2=1, (P-Pref) 2 =(0.375-1.5) 2 ≈1.27, then the cost function J(50%)=0.2*100+0.6*1+0.2*1.27=20+0.6+0.254=20.854. By performing corresponding calculations for each duty cycle d, and then taking the smallest J(di), the corresponding d is the final output duty cycle, and finally the fan operation is controlled according to the duty cycle.

[0102] It is understandable that, based on the cost function, penalty items related to the duration and magnitude of deviation can be added when a certain indicator (temperature indicator, noise indicator, energy consumption indicator) continuously deviates from its target value (Tref, Nref, Pref), so as to avoid the long-term risk of the system ignoring a certain indicator due to "short-term balance" (such as a slow increase in temperature eventually leading to overheating, or continuous noise exceeding the standard affecting user experience).

[0103] In addition, through offline simulation or experimentation, all possible weight combinations (α, β, γ) can be traversed to calculate the corresponding temperature, noise, and power consumption performance. The Pareto optimal solution can be screened and classified by scenario (such as "silent mode", "energy-saving mode", "heat dissipation mode", etc.), and stored as a Pareto table. The Pareto table contains the "non-inferior solution" weight combinations of temperature, noise, and energy consumption in different scenarios. That is, for the weights of the three indicators, if there is no other weight combination that can improve the other target without deteriorating at least one target, then the combination is the Pareto optimal solution. When it is detected that the temperature information, noise information, and power consumption information of the current scene match a certain type of scene in the Pareto table, the Pareto optimal weight of the scene can be directly called as the adjustment basis, reducing the amount of calculation and improving the adjustment efficiency.

[0104] See also Figure 8 In some embodiments, the control method further comprises:

[0105] Step 018: When the noise weight is greater than the temperature weight and / or the power consumption weight is greater than the temperature weight, determining whether a change trend of a plurality of consecutive temperature information satisfies a preset trend, wherein the preset trend includes an upward trend;

[0106] Step 019: When the change trend of a plurality of consecutive temperature information satisfies a preset trend, the temperature weight is increased, the noise weight is reduced, and / or the power consumption weight is reduced.

[0107] Specifically, when the noise weight is greater than the temperature weight and / or the power consumption weight is greater than the temperature weight, that is, when the temperature indicator is not the most prioritized indicator, the temperature information of the energy storage power supply can be continuously monitored. If multiple temperature information shows an upward trend, it can be considered that the fan cannot meet the heat dissipation requirements of the energy storage power supply at the current speed. At this time, the quiet requirement and the heat dissipation requirement conflict. In order to ensure the power safety of the energy storage power supply, the heat dissipation capacity can be improved by increasing the temperature weight, reducing the noise weight, and reducing the power consumption weight to meet the heat dissipation requirements. For example, the temperature weight can be increased while reducing the noise weight and keeping the power consumption weight unchanged; or, the temperature weight can be increased while reducing the noise weight and the power consumption weight, etc. This application does not limit this and will not be listed here.

[0108] See also Figure 9 In some embodiments, the control method further comprises:

[0109] Step 020: When the changing trend of a plurality of consecutive temperature information satisfies a preset trend, the energy storage power supply is controlled to issue a first prompt message, wherein the first prompt message is used to prompt the user to increase the temperature weight.

[0110] Specifically, when the changing trends of multiple consecutive temperature information meet the preset trends, the energy storage power supply can be controlled through its display screen, light, microphone or motor to emit a first prompt message in the form of sound, text, light or vibration to remind the user that the temperature of the energy storage power supply has risen. In order to ensure the safety of electricity use, the temperature weight is increased.

[0111] See also Figure 10 In some embodiments, the control method further comprises:

[0112] Step 021: When the temperature information is greater than a preset temperature threshold, the temperature weight is set to 1.

[0113] The preset temperature threshold may be the upper limit temperature of any component, or may be the minimum temperature value among the upper limit temperatures of multiple components.

[0114] Specifically, in order to further meet the heat dissipation requirements of the energy storage power supply and ensure the safety of the energy storage power supply, an over-temperature protection priority mechanism can be set for the energy storage power supply. That is, when the temperature information is greater than the upper limit temperature of any component or the minimum temperature value among the upper limit temperatures of multiple components, an alarm is triggered, the temperature weight is set to 1, the power consumption weight and the noise weight are both set to 0, and the noise and energy efficiency are ignored to ensure the power safety of the energy storage power supply. At the same time, the energy storage power supply can also record alarms and generate alarm logs for users to better monitor the energy storage power supply.

[0115] See also Figure 11In some embodiments, the control method further comprises:

[0116] Step 022: When the temperature weight is 1, determine whether the change trend of a plurality of consecutive temperature information satisfies a preset trend, wherein the preset trend includes an upward trend;

[0117] Step 023: When the changing trend of a plurality of consecutive temperature information satisfies a preset trend, the power of the energy storage power supply is reduced.

[0118] Specifically, when the temperature weight is 1, the fan can be considered to be running at maximum speed. When the fan is running at full speed but the temperature trend is still rising, to ensure charging and discharging safety, the power of the energy storage power supply can be reduced (for example, reducing the inverter power of the energy storage power supply and / or reducing the output module load power, etc.).

[0119] See also Figure 12 In some embodiments, the control method further comprises:

[0120] Step 024: When the trend of changes in multiple consecutive temperature information meets a preset trend, control the energy storage power supply to issue a second prompt message, wherein the preset trend includes an upward trend, and the second prompt message is used to remind the user that the energy storage power supply has an overheating risk.

[0121] Specifically, when the temperature weight is 1, the fan is running at full speed but the temperature trend is still rising, the display screen, light, microphone or motor of the energy storage power supply can also be controlled to control the energy storage power supply to emit a second prompt message in the form of sound, text, light or vibration to warn the user that the energy storage power supply is at risk of overheating. In order to ensure the safety of electricity use, the power of the energy storage power supply is reduced.

[0122] See also Figure 13 To facilitate better implementation of the embodiments of the present application, the embodiments of the present application further provide a control device 300. The control device 300 can be applied to an energy storage power supply, which includes a fan. The control device includes an acquisition module 301, a first calculation module 302, a second calculation module 303, and a control module 304. The acquisition module 301 is used to acquire temperature information, noise information, and power consumption information of the energy storage power supply, where the noise information and power consumption information are determined based on the duty cycle of the fan control signal; the first calculation module 302 is used to calculate the first generation value corresponding to the temperature information of the energy storage power supply, the second generation value corresponding to the noise information, and the third generation value corresponding to the power consumption information of the fan at different duty cycles; the second calculation module 303 is used to calculate the total cost value corresponding to different duty cycles based on the first generation value, the second generation value, and the third generation value corresponding to different duty cycles; and the control module 304 is used to control the operation of the fan based on the duty cycle that minimizes the total cost value.

[0123] The above describes the device from the perspective of functional modules in conjunction with the accompanying drawings. The functional modules can be implemented in hardware form, can be implemented by instructions in software form, or can be implemented by a combination of hardware and software modules. Specifically, the steps of the method embodiments in the embodiments of the present application can be completed by the hardware integrated logic circuit and / or software form instructions in the processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware encoding processor, or can be executed by a combination of hardware and software modules in the encoding processor. Optionally, the software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps in the above method embodiments in combination with its hardware.

[0124] Please refer again Figure 1 The present application proposes an energy storage power supply 100, including a fan 10 and a controller 20, wherein the controller 20 is connected to a memory; a computer program is stored in the memory, and the controller 20 executes the computer program to implement the steps of the control method of any of the above-mentioned embodiments, and can achieve the same technical effect. For the sake of brevity, it will not be repeated here.

[0125] The embodiments of the present application further provide a computer program product, including a computer program, which includes instructions for the control method of any of the above embodiments, which will not be described in detail here for the sake of brevity.

[0126] See also Figure 14 The embodiment of the present application also provides a computer-readable storage medium 600 on which a computer program 610 is stored. When the computer program 610 is executed by the processor 620, the steps of the control method of any of the above-mentioned embodiments are implemented. For the sake of brevity, they are not repeated here.

[0127] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that specific features, structures, materials, or characteristics described in conjunction with an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative descriptions of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0128] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A control method, characterized in that: For an energy storage power supply, the energy storage power supply includes a fan, and the method includes: Acquiring temperature information, noise information, and power consumption information of an energy storage power supply, wherein the noise information and the power consumption information are determined based on a duty cycle of a control signal of the fan; Calculating, under different duty cycles of the fan, a first-generation value corresponding to the temperature information of the energy storage power supply, a second-generation value corresponding to the noise information, and a third-generation value corresponding to the power consumption information; Based on the first generation value, the second generation value and the third generation value corresponding to the different duty cycles, respectively calculating the total cost value corresponding to the different duty cycles; The fan is controlled to operate based on the duty cycle with the smallest total cost.

2. The control method according to claim 1, characterized in that: The calculating of the first generation value corresponding to the temperature information of the energy storage power supply, the second generation value corresponding to the noise information, and the third generation value corresponding to the power consumption information of the fan at different duty cycles includes: determining the first generation value based on current temperature information and a preset temperature cost function, wherein the temperature cost function is determined based on the temperature information and a preset temperature value; determining the second generation value based on noise information corresponding to the noise ratio and a preset noise cost function, wherein the noise cost function is determined based on the noise information and a preset noise value; The third generation value is determined based on the power consumption information corresponding to the noise ratio and a preset power consumption cost function, wherein the power consumption cost function is determined based on the power consumption information and a preset power consumption value.

3. The control method according to claim 1 or 2, characterized in that: The energy storage power supply includes a housing and a plurality of components, wherein the plurality of components are arranged in the housing, and the temperature information includes a maximum temperature value among current temperature values ​​of the components.

4. The control method according to claim 1 or 2, characterized in that: The method further comprises: Based on a preset mapping relationship, the noise information corresponding to each of the different duty cycles is determined, where the preset mapping relationship is a mapping relationship between the duty cycle and the noise information.

5. The control method according to claim 1 or 2, characterized in that: The method further comprises: Obtaining a target power consumption, where the target power consumption is the power consumption when the fan rotates at a maximum speed; The power consumption information is determined according to the target power consumption and the duty cycle.

6. The control method according to claim 1 or 2, characterized in that: The first generation value, the second generation value, and the third generation value corresponding to the different duty cycles are calculated respectively, and the total cost value corresponding to the different duty cycles is calculated, including: Obtaining a temperature weight of the temperature information, a noise weight of the noise information, and a power consumption weight of the power consumption information, wherein the temperature weight, the noise weight, and the power consumption weight are all greater than 0, and the sum of the temperature weight, the noise weight, and the power consumption weight is 1; Based on the temperature weight value, the noise weight value, and the power consumption weight value corresponding to the different duty cycles, total cost values ​​corresponding to the different duty cycles are calculated respectively.

7. The control method according to claim 6, characterized in that: The energy storage power supply includes a heat dissipation mode, a silent mode, and a power consumption mode. In the heat dissipation mode, the temperature weight is greater than the noise weight and the power consumption weight; in the silent mode, the noise weight is greater than the temperature weight and the power consumption weight; In the power consumption mode, the power consumption weight is greater than the temperature weight and the noise weight.

8. The control method according to claim 7, characterized in that: The method further comprises: In a case where the noise weight is greater than the temperature weight and / or the power consumption weight is greater than the temperature weight, determining whether a change trend of a plurality of consecutive pieces of temperature information meets a preset trend, where the preset trend includes an upward trend; When the change trends of a plurality of consecutive pieces of temperature information meet a preset trend, the temperature weight is increased, the noise weight is decreased, and / or the power consumption weight is decreased.

9. The control method according to claim 8, characterized in that: The method further comprises: When the changing trends of a plurality of consecutive temperature information satisfy a preset trend, the energy storage power supply is controlled to issue a first prompt message, wherein the first prompt message is used to prompt the user that the temperature weight increases.

10. The control method according to claim 8, characterized in that: The method further comprises: When the temperature information is greater than a preset temperature threshold, the temperature weight is set to 1.

11. The control method according to any one of claims 7 to 10, characterized in that: The method further comprises: When the temperature weight is 1, determining whether a change trend of a plurality of consecutive temperature information satisfies a preset trend, wherein the preset trend includes an upward trend; When the changing trends of a plurality of consecutive temperature information satisfy a preset trend, the power of the energy storage power supply is reduced.

12. The control method according to claim 11, characterized in that: The method further comprises: When the change trend of multiple consecutive temperature information meets the preset trend, the energy storage power supply is controlled to issue a second prompt message, wherein the preset trend includes an upward trend, and the second prompt message is used to prompt the user that the energy storage power supply has an overheating risk.

13. An energy storage power supply, characterized in that: include: fan; and A controller, wherein the controller executes a computer program to implement the control method according to any one of claims 1 to 11.

14. A non-volatile computer-readable storage medium containing a computer program, wherein when the computer program is executed by a processor, the processor is caused to execute the control method according to any one of claims 1 to 12.

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