A control method and device of a photovoltaic power generation system and a vehicle

Abstract

The application provides a photovoltaic power generation system control method and device and a vehicle, and relates to the technical field of new energy vehicles. The photovoltaic power generation system control method comprises the following steps: in response to a wake-up signal issued at a wake-up time, obtaining running environment information; judging whether time information, weather information and light intensity information meet working conditions; when any one of the running environment information does not meet the working conditions, setting the next wake-up time according to the running environment information and a preset wake-up strategy, and controlling the photovoltaic power generation system to enter a sleep mode; when all the running environment information meets the working conditions, controlling the photovoltaic power generation system to enter a working mode. The application can master the real running environment of the system by obtaining the running environment information, and provide a reliable basis for the reasonable control of the system; the next wake-up time is dynamically adjusted based on the wake-up interval by judging various running environment information, which is beneficial to realize high power generation and low energy consumption of the system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a control method and device of a photovoltaic power generation system and a vehicle. BACKGROUND

[0002] In recent years, new energy vehicles have become a new trend in the development of vehicles due to their good power performance and small environmental pollution. With the continuous maturity of solar application technology, photovoltaic power generation technology has also been gradually applied to the field of automobiles. Through the vehicle-mounted photovoltaic panel, light energy is converted into electrical energy to supplement the energy of the vehicle-mounted battery, greatly improving the economy of using the vehicle.

[0003] Since the photovoltaic power generation system has high requirements for light conditions, in the case of poor light conditions (such as overcast days), the energy generated by the photovoltaic power generation system is small, and even cannot meet the energy consumption of the system itself. To solve the above technical problems, the prior art obtains voltage, current and other information to determine the relevant power during system power generation. When the energy power generated by the system is lower than the energy consumption power of the system itself, the control system enters a sleep mode, and a fixed wake-up time is set. The system is woken up again after a period of time. However, this single control method is prone to frequent start-stop of the system under poor light conditions, resulting in high system energy consumption. At the same time, it is also easy to miss good light conditions, resulting in low system power generation and unable to meet the needs of the vehicle. SUMMARY

[0004] The problem solved by the present application is how to balance the high power generation and low energy consumption of the photovoltaic power generation system.

[0005] To solve the above problems, the present application provides a control method of a photovoltaic power generation system, comprising:

[0006] In response to a wake-up signal issued at a preset wake-up time, obtaining running environment information, wherein the running environment information includes time information, weather information and light intensity information;

[0007] determining whether the time information, the weather information and the light intensity information meet a preset working condition;

[0008] When any one of the time information, the weather information and the light intensity information does not meet the working condition, setting the next wake-up time according to the running environment information and a preset wake-up strategy, and controlling the photovoltaic power generation system to enter a sleep mode, wherein the wake-up strategy includes a plurality of wake-up intervals, and the change trend of the plurality of wake-up intervals with time is in a negative correlation relationship with the change trend of the natural light intensity with time;

[0009] When the time information, the weather information and the light intensity information all satisfy the working condition, the photovoltaic power generation system is controlled to enter a working mode.

[0010] Optionally, the time information includes a sunrise and sunset time and a current time, and the weather information includes a current weather; the judging whether the time information, the weather information and the light intensity information satisfy a preset working condition comprises:

[0011] According to the sunrise and sunset time, an operation interval of the photovoltaic power generation system is obtained;

[0012] When the current time is in the operation interval, the time information satisfies the working condition;

[0013] When the current weather is sunny, the weather information satisfies the working condition.

[0014] Optionally, the operation environment information further includes light receiving area information; the judging whether the time information, the weather information and the light intensity information satisfy a preset working condition further comprises:

[0015] Based on the light intensity information and the light receiving area information, a power generation power of the photovoltaic power generation system is predicted;

[0016] When the power generation power is greater than a preset power threshold, the light intensity information satisfies the working condition, wherein the power threshold includes a power consumption value of the photovoltaic power generation system.

[0017] Optionally, the weather information further includes a current day weather; when any one of the time information, the weather information and the light intensity information does not satisfy the working condition, according to the operation environment information and a preset wake-up strategy, a next wake-up time is set, and the photovoltaic power generation system is controlled to enter a sleep mode, comprising:

[0018] When the time information does not satisfy the working condition, the next wake-up time is obtained according to the sunrise and sunset time;

[0019] When the weather information does not satisfy the working condition, the next wake-up time is obtained according to the current day weather;

[0020] When the light intensity information does not satisfy the working condition, the next wake-up time is obtained according to the current time and the wake-up strategy;

[0021] After the next wake-up time is obtained, the photovoltaic power generation system is controlled to enter the sleep mode.

[0022] Optionally, the weather information of the day comprises a plurality of time-sequenced time period weather; and the next wake-up time is determined according to the weather information of the day when the weather information does not satisfy the working condition, comprising:

[0023] determining whether there is a time period weather in the weather information of the day that satisfies the working condition in the running interval;

[0024] if yes, taking the time corresponding to the first time period weather that satisfies the working condition as the next wake-up time;

[0025] if no, adding a first preset time to the current time to obtain the next wake-up time.

[0026] Optionally, the next wake-up time is determined according to the current time and the wake-up strategy when the light intensity information does not satisfy the working condition, comprising:

[0027] obtaining the corresponding wake-up interval according to the light change stage in which the current time is located, wherein the light change stage comprises a light enhancement stage and a light weakening stage, the wake-up interval corresponding to the light enhancement stage decreases with time, and the wake-up interval corresponding to the light weakening stage increases with time;

[0028] adding the wake-up interval to the current time to obtain the next wake-up time.

[0029] Optionally, after the photovoltaic power generation system is controlled to enter the working mode when the time information, the weather information and the light intensity information all satisfy the working condition, the method further comprises:

[0030] returning to the step of receiving the running environment information after a second preset time;

[0031] or;

[0032] returning to the step of receiving the running environment information every third preset time, wherein the third preset time is less than the second preset time;

[0033] when the light intensity information does not satisfy the working condition, keeping the photovoltaic power generation system in the working mode and starting timing to obtain a duration;

[0034] when the duration is less than or equal to a preset time threshold and the light intensity information satisfies the working condition, ending timing;

[0035] When the duration is greater than the time threshold, the photovoltaic power generation system is controlled to enter the dormant mode, and the second preset time is added to the current time to obtain the next wake-up time.

[0036] Optionally, the photovoltaic power generation system is in communication connection with a vehicle information system; and the running environment information is acquired in response to a wake-up signal issued at a preset wake-up time, including:

[0037] The network update state of the vehicle information system is acquired in response to the wake-up signal.

[0038] When the network update state is an updated state, the time information and the weather information issued by the vehicle information system are received.

[0039] When the network update state is an un-updated state, the time information and the weather information before the photovoltaic power generation system enters the dormant mode are acquired, and the weather information is set as sunny.

[0040] The present application acquires the running environment information in response to a wake-up signal issued at a preset wake-up time, meets the characteristics of the system following the movement of the vehicle, facilitates the comprehensive mastery of the real running environment information of the system, and provides a reliable basis for the reasonable control of the system; the current running environment of the system can be accurately evaluated by judging whether the time information, the weather information and the light intensity information meet the preset working conditions, which is beneficial to avoiding the frequent start-stop of the system caused by the pure dependence on the actually received light intensity information, and reducing the energy consumption of the system; when any one of the time information, the weather information and the light intensity information does not meet the working conditions, the next wake-up time is set according to the running environment information and the preset wake-up strategy, and the photovoltaic power generation system is controlled to enter the dormant mode, so as to guarantee the performance-price ratio of the system power generation and improve the system operation efficiency. At the same time, the wake-up strategy includes a plurality of wake-up intervals, and the change trend of the plurality of wake-up intervals with time is negatively correlated with the change trend of the natural light intensity with time, which is beneficial to adapting to the change of the natural light intensity, dynamically adjusting the wake-up time of the system, and realizing the multiple advantages of high power generation of the photovoltaic power generation system and low energy consumption; when the time information, the weather information and the light intensity information all meet the working conditions, the photovoltaic power generation system is controlled to enter the working mode, so as to guarantee the reliability of the system running environment and facilitate the stable operation of the system.

[0041] In a second aspect, the present application provides a control device of a photovoltaic power generation system, including:

[0042] The acquisition module is configured to acquire running environment information in response to a wake-up signal issued at a preset wake-up time, wherein the running environment information includes time information, weather information and light intensity information.

[0043] a processing module configured to determine whether the time information, the weather information, and the light intensity information satisfy a preset working condition;

[0044] when any one of the time information, the weather information, and the light intensity information does not satisfy the working condition, setting a next wake-up time according to the running environment information and a preset wake-up strategy, and controlling the photovoltaic power generation system to enter a sleep mode, wherein the wake-up strategy comprises a plurality of wake-up intervals, and the plurality of wake-up intervals have a negative correlation with a change trend of natural light intensity over time;

[0045] when the time information, the weather information, and the light intensity information all satisfy the working condition, controlling the photovoltaic power generation system to enter a working mode.

[0046] The photovoltaic power generation control device and the photovoltaic power generation system control method provided by the present application have the same advantages as those of the prior art, and thus will not be described here.

[0047] In a third aspect, the present application provides a vehicle comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the photovoltaic power generation system control method as described above when executing the computer program.

[0048] The vehicle and the photovoltaic power generation system control method provided by the present application have the same advantages as those of the prior art, and thus will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 a flowchart of the photovoltaic power generation system control method of the present application;

[0050] Figure 2 another flowchart of the photovoltaic power generation system control method of the present application. DETAILED DESCRIPTION

[0051] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes, and should not be used to limit the protection scope of the present application.

[0052] It should be understood that each of the steps recited in the method embodiments of the present application can be performed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit performing the steps shown. The scope of the present application is not limited in this respect.

[0053] The term "comprising" and variations thereof as used herein are open-ended, and mean "including but not limited to". The term "based on" means "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optional" means "optional in at least some embodiments". Related definitions are given throughout the detailed description. It is to be noted that the concepts of "first", "second", etc. mentioned in the present application are merely used to distinguish different apparatuses, modules or units, and are not intended to limit the order or interdependence of the functions performed by these apparatuses, modules or units.

[0054] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0055] As shown in Figure 1 An embodiment of the present application provides a control method of a photovoltaic power generation system, comprising:

[0056] S1: In response to a wake-up signal issued at a preset wake-up time, obtain running environment information, wherein the running environment information includes time information, weather information and light intensity information.

[0057] Specifically, the preset wake-up time in the present application refers to the next wake-up time set by the photovoltaic power generation system (hereinafter referred to as the system) before entering the sleep mode. The wake-up signal in the present application can be sent by the internal wake-up clock of the execution subject of the system control method (i.e. the controller), or can be sent by the vehicle information system; for example, when the time of the internal wake-up clock is consistent with the preset wake-up time, the wake-up clock will send a wake-up signal (such as the rising edge signal generated by the wake-up clock). The operating environment information in the present application can be sent by multiple information collection devices arranged in the photovoltaic power generation system, or can be sent by the vehicle information system; for example, after the controller is woken up, it communicates with the vehicle information system to receive the time information and weather information sent by the vehicle information system, and receives the light intensity information sent by the light collection device. It should be understood that the light intensity information sent by the light collection device (such as a light sensor) in the present application refers to the actual light intensity information collected by the system, which is different from the natural light intensity. For example, the current weather is sunny, and it is 1 pm, at which time the natural light intensity is very strong. However, the vehicle-mounted photovoltaic power generation system may be currently in an underground parking lot, and the actual collected light intensity information is relatively weak.

[0058] In the present embodiment, the controller is woken up at the preset wake-up time, receives information such as time information, weather information and light intensity information, can meet the characteristics of the system following the movement of the vehicle, and is convenient for comprehensively grasping the real operating environment information of the system, thereby providing a reliable basis for the reasonable control of the system.

[0059] S2: Determine whether the time information, weather information and light intensity information meet the preset working conditions.

[0060] Specifically, since the system has high requirements for light intensity when working, if power generation is performed in a weak light intensity, the power generation amount may be lower than the energy consumption of the system itself, that is, the cost performance of starting the system to generate power is low. The actual collected light intensity information of the system is mainly affected by the natural light intensity and the location space of the system. In the case of poor natural light intensity, the actual collected light intensity is relatively poor regardless of the location of the system. The most important factor affecting the natural light intensity is time, followed by weather information. Only when the time information allows (such as the existence of light during the day) and the weather information allows (such as sunny), the actual collected light intensity information can meet the working conditions stably.

[0061] It should be understood that, since the vehicle-mounted photovoltaic power generation system needs to move with the vehicle, the light intensity information collected by the light collection device will also change accordingly, and the existing technology simply relies on the collected light intensity information to accurately evaluate the current system operating environment, which is easy to cause the system to fluctuate sharply. The embodiment comprehensively evaluates whether the current operating environment is suitable for the system to generate electricity, which is beneficial to ensure the cost performance and stability of the system power generation.

[0062] In the embodiment, judging whether the time information, weather information and light intensity information meet the preset working condition can accurately evaluate the current operating environment of the system, which is beneficial to avoid the frequent start and stop of the system caused by simply relying on the actual received light intensity information, and reduce the energy consumption of the system.

[0063] S3: When any one of the time information, weather information and light intensity information does not meet the working condition, set the next wake-up time according to the operating environment information and the preset wake-up strategy, and control the photovoltaic power generation system to enter the sleep mode, wherein the wake-up strategy includes a plurality of wake-up intervals, and the change trend of the plurality of wake-up intervals with time is negatively correlated with the change trend of the natural light intensity with time.

[0064] Specifically, whether the time information, weather information and light intensity information meet the preset working condition is judged, and when any one of them does not meet the working condition, it means that the cost performance of starting the system to generate electricity cannot be guaranteed, and the next wake-up time needs to be set and the system needs to be controlled to enter the sleep mode.

[0065] Specifically, whether the time information, weather information and light intensity information meet the working condition can be judged at the same time, and when any one of them does not meet the working condition, the corresponding wake-up time is obtained according to the current time and the preset wake-up strategy. If the number of obtained wake-up times is greater than or equal to 2, the weight coefficients of the time information, weather information and light intensity information are obtained respectively, the wake-up time corresponding to the information with the largest weight coefficient is selected as the next wake-up time; or the wake-up time closest to the current time can be selected from the plurality of wake-up times as the next wake-up time, which is beneficial to ensure the power generation of the system; or the wake-up time farthest from the current time can be selected from the plurality of wake-up times as the next wake-up time, which is beneficial to avoid the frequent start and stop of the system.

[0066] Specifically, the information can be judged in the order of time information, weather information and light intensity information, and when any of the information does not meet the working condition, the judgment is stopped, and the next wake-up time is generated. For example, when the time information does not meet the working condition (such as night period), the light intensity information actually received by the system cannot meet the requirement, and there is no need to judge the weather information and the light intensity information; when the time information meets the working condition, but the weather information does not meet the working condition (such as overcast or rainy and snowy weather), the light intensity information actually received by the system also cannot guarantee the performance price ratio of the system to generate power, and there is no need to judge the light intensity information; only in the case that the time information and the weather information meet the working condition, and the light intensity received by the system is strong, the performance price ratio of the system to generate power can be guaranteed. Therefore, the information is judged in the order of time information, weather information and light intensity information, and when any of the information does not meet the working condition, it can be determined that the performance price ratio of the system to generate power is low under the current operating environment, which is beneficial to improve the disposal efficiency of the system and save the computing power.

[0067] In an embodiment, the wake-up interval referred to by the present application represents the time difference between the current time and the next wake-up time of the controller. The variation trend of the natural light intensity over time referred to by the present application represents the variation trend of the natural light in the case of normal weather (such as sunny day) within the time interval with light. Since the natural light intensity often differs greatly at different times of the day, and the weather changes and the vehicle position changes also cause the light intensity information actually collected by the system to change. The prior art sets the next wake-up time based on the fixed wake-up interval, without considering the change of the system operating environment, and simply sets the wake-up time of the system according to the fixed wake-up interval, which may result in the following two situations:

[0068] (1) If the wake-up interval is set too short, the system cannot generate power every time it is woken up in the case of weak natural light intensity, and the more frequent the wake-up, the more energy the system consumes, which is not worth the cost.

[0069] (2) If the wake-up interval is set too long, the system may miss the stage where the light intensity information meets the working condition, resulting in low power generation of the system and failure to meet the vehicle demand.

[0070] And in this embodiment, the next wake-up time can be determined based on the operating environment information and the wake-up strategy, the wake-up strategy includes a plurality of wake-up intervals, the variation trend of the plurality of wake-up intervals over time is negatively correlated with the variation trend of the natural light intensity over time, and the wake-up interval is dynamically adjusted according to the variation of the natural light intensity.

[0071] In the embodiment, when any of the information in the running environment information does not satisfy the working condition, it indicates that the current running environment cannot guarantee that the system can receive better light intensity more stably, in this case, the next wake-up time is set, and the system is controlled to enter the sleep mode, which is beneficial to guarantee the performance-price ratio of the system power generation and improve the operation efficiency of the system. Meanwhile, the wake-up interval has a negative correlation with the change trend of the natural light intensity with time, which avoids missing the power generation opportunity when the natural light intensity is good, and also avoids the system from being frequently woken up when the natural light intensity is poor. The dynamic change of the wake-up interval is beneficial to adapt to the change of the natural light intensity, and realizes the multiple advantages of the photovoltaic power generation system such as high power generation and low energy consumption.

[0072] S4: when the time information, the weather information and the light intensity information all satisfy the working condition, the photovoltaic power generation system is controlled to enter the working mode.

[0073] Specifically, the working mode in the embodiment indicates that the photovoltaic power generation system enters the power generation state, for example, the photovoltaic panel of the system is unfolded, and the system performs the photoelectric energy conversion. When the time information, the weather information and the light intensity information in the running environment information all satisfy the working condition, it indicates that the current running environment can guarantee the performance-price ratio of the system power generation, and the system can enter the working mode to generate power stably. Different from the prior art which simply depends on the light intensity information to determine whether the system should generate power, the embodiment comprehensively considers the multiple running environment information, guarantees the reliability of the system running environment, and is beneficial to the stable operation of the system. When the system simply depends on the light intensity information to determine whether the system should generate power, the frequent start-stop of the system caused by the sharp change of the light intensity information is avoided.

[0074] In the embodiment, the controller acquires the running environment information in response to the wake-up signal issued at the preset wake-up time, meets the characteristics of the system following the vehicle movement, facilitates the grasping of the real running environment information of the system, and provides a reliable basis for the reasonable control of the system; the judgment of whether the time information, the weather information and the light intensity information meet the preset working condition can accurately evaluate the current running environment of the system, and is beneficial to avoid the frequent start-stop of the system caused by the pure dependence on the actually received light intensity information, and reduce the energy consumption of the system; when any one of the time information, the weather information and the light intensity information does not meet the working condition, the next wake-up time is set according to the running environment information and the preset wake-up strategy, and the photovoltaic power generation system is controlled to enter the sleep mode, so as to improve the performance-price ratio of the system power generation and improve the system operation efficiency. At the same time, the wake-up strategy includes a plurality of wake-up intervals, and the change trend of the plurality of wake-up intervals with time is in a negative correlation relationship with the change trend of the natural light intensity with time, which is beneficial to adapt to the change of the natural light intensity, dynamically adjust the wake-up time of the system, and realize the multiple advantages of high power generation of the photovoltaic power generation system and low energy consumption; when the time information, the weather information and the light intensity information all meet the working condition, the photovoltaic power generation system is controlled to enter the working mode, the reliability of the system running environment is ensured, and the stable operation of the system is beneficial.

[0075] Optionally, as shown in Figure 2 The time information includes the sunrise and sunset time and the current time, and the weather information includes the current weather; the judgment of whether the time information, the weather information and the light intensity information meet the preset working condition includes:

[0076] According to the sunrise and sunset time, the running interval of the photovoltaic power generation system is obtained;

[0077] When the current time is in the running interval, the time information meets the working condition;

[0078] When the current weather is sunny, the weather information meets the working condition.

[0079] Specifically, the photovoltaic power generation system needs to generate electricity in the presence of light, and the time interval of the presence of light can be obtained according to the sunrise and sunset time, and then the operation interval of the system is obtained, for example: in the received sunrise and sunset time, the sunrise time is 6 o'clock in the morning, and the sunset time is 5 o'clock in the afternoon, and the operation interval of the system is from 6 o'clock in the morning to 5 o'clock in the afternoon. The current time is 6 o'clock and 5 minutes, which is in the operation interval, so the current time meets the working condition. Preferably, since the natural light intensity is relatively weak near the sunrise and sunset time, the actual light intensity information that the system can receive is also relatively weak, and the cost performance of the system power generation is low. Therefore, the operation interval can be appropriately shortened based on the sunrise and sunset time, for example, delayed by 30 minutes based on the sunrise time, and advanced by 30 minutes based on the sunset time, to obtain the operation interval of the system, which is conducive to ensuring that the controller of the system has a good operating environment after being awakened.

[0080] In an embodiment, it is judged whether the current weather meets the working condition, that is, whether the natural light intensity under the current weather is good. The natural light intensity is mainly affected by the cloud layer, and the sunny day referred to in the present application includes the weather with good natural light intensity when the cloud layer is relatively thin, which can meet the system working condition. When the cloud layer is relatively thick, the natural light intensity is poor (such as current weather is overcast, rainy, snowy, etc.), which cannot meet the working condition of the system.

[0081] In the present embodiment, the current time is in the operation interval, which guarantees the existence of the most basic natural light; the current weather can meet the working condition, which guarantees the good natural light intensity; when the natural light intensity is good, it is conducive to guaranteeing the stability of the light intensity information received by the system and improving the cost performance of the system power generation.

[0082] Optionally, the operation environment information further includes light receiving area information; judging whether the time information, weather information and light intensity information meet the preset working condition further includes:

[0083] Based on the light intensity information and the light receiving area information, the power generation power of the photovoltaic power generation system is predicted.

[0084] When the power generation power is greater than the preset power threshold, the light intensity information meets the working condition, wherein the power threshold includes the power consumption value of the photovoltaic power generation system.

[0085] Specifically, the light receiving area referred to in the present application indicates the area that the device for photoelectric conversion of the system can receive light, such as the area of the photovoltaic panel of the system, which can be obtained by measuring in advance; based on the light intensity information and the light receiving area, the power generation power of the system in the current operation environment can be accurately predicted, and the power generation power can be represented as:

[0086] P=K·A·G;

[0087] Wherein, P represents the predicted power generation; K represents the photoelectric conversion efficiency of the system, the value range of K is generally 15%-20%, which can be set in advance; A represents the light receiving area; G represents the light intensity information collected by the light collection device, which can be represented by the solar radiation intensity.

[0088] In an embodiment, when the power generation is greater than the preset power threshold, it indicates that the cost performance of the system for power generation can be ensured, wherein the power threshold can include the power consumption value of the photovoltaic power generation system, which can be obtained in advance by measurement; preferably, the power threshold further includes a preset power consumption compensation value, and the value range of the power consumption compensation value is 10W-20W.

[0089] In the embodiment, based on the light intensity information and the light receiving area information, the power generation of the photovoltaic power generation system can be predicted, when the power generation is greater than the preset power threshold, it indicates that the cost performance of the system for power generation is high, which meets the working condition, and there is no need to judge the cost performance of power generation according to the actual power generation after the system is turned on, which avoids frequent switching of the system and saves the energy consumption of the system.

[0090] Optionally, as shown in Figure 2 The weather information further includes the weather of the day; when any one of the time information, the weather information and the light intensity information does not meet the working condition, the next wake-up time is set according to the running environment information and the preset wake-up strategy, and the photovoltaic power generation system is controlled to enter the sleep mode, including:

[0091] When the time information does not meet the working condition, the next wake-up time is obtained according to the sunrise and sunset time;

[0092] When the weather information does not meet the working condition, the next wake-up time is obtained according to the weather of the day;

[0093] When the light intensity information does not meet the working condition, the wake-up interval is determined according to the current time and the wake-up strategy to obtain the next wake-up time;

[0094] After the next wake-up time is obtained, the photovoltaic power generation system is controlled to enter the sleep mode.

[0095] Specifically, the sunrise and sunset time referred to in the present application includes the sunrise time and the sunset time. Since the vehicle-mounted photovoltaic power generation system needs to move with the vehicle, when the vehicle position changes greatly, the time zone may change. At this time, when the controller is woken up according to the wake-up time set before the system enters the sleep mode, there may be a case that the current time received after the controller is woken up is earlier than the received sunrise time. For example, the next wake-up time set by the system before entering the sleep mode in region A is the sunrise time of the next day (such as 6 am). During this period, the photovoltaic power generation system moves with the vehicle to region B, and the sunrise time of region B is 7 am. When the wake-up clock wakes up the controller at 6 am, the current time has not reached the sunrise time of region B, that is, the current time is before the running interval, which means that the time information does not meet the working condition, and the next wake-up time needs to be determined according to the sunrise and sunset time of region B.

[0096] In an embodiment, when the current weather does not meet the working condition, it means that the natural light intensity is poor at this time. The time when the natural light intensity is likely to be good can be predicted according to the weather of the current day, and the next wake-up time is obtained. For example, if the weather of the current day is all cloudy, the next wake-up time can be the sunrise time of the next day. When the light intensity information does not meet the working condition, it may be because the natural light intensity at this time is relatively weak (such as near the sunrise time). The wake-up interval can be determined according to the current time and the wake-up strategy, the time when the natural light intensity is likely to be good is predicted, and the wake-up time is obtained.

[0097] Optionally, the existence of an obstruction at the location of the light collection device will also cause the light intensity information to not meet the working condition. The running environment information can also include location information or image information. When the light intensity information does not meet the working condition, it is judged whether the light collection device is obstructed by an obstacle based on the location information or image information. If yes, the time when the obstacle is removed is taken as the next wake-up time. If no, the wake-up interval is determined according to the current time and the wake-up strategy, and the wake-up time is obtained. In this embodiment, by introducing the location information or image information, the perception ability of the system to the running environment is further improved, so that the corresponding wake-up time is set more reasonably.

[0098] In this embodiment, when any item of the running environment information does not meet the working condition, the time corresponding to the next running environment that may meet the working condition is predicted based on the possible change trend of the running environment information, and is taken as the next wake-up time. The photovoltaic power generation system is controlled to enter the sleep mode, which ensures the scientificity, rationality and reliability of the setting of the next wake-up time, and is conducive to achieving high power generation and low energy consumption of the photovoltaic power generation system.

[0099] Optionally, when the day weather comprises a plurality of time period weathers arranged in time sequence; when the weather information does not satisfy the working condition, the next wake-up time is obtained according to the day weather, comprising:

[0100] judging whether there is a time period weather in the day weather which satisfies the working condition in the running interval;

[0101] if yes, taking the time corresponding to the first time period weather which satisfies the working condition as the next wake-up time;

[0102] if no, increasing the first preset time based on the current time to obtain the next wake-up time.

[0103] Specifically, since the time period weather in the day weather is generally changing, when the current weather does not satisfy the working condition, it can be judged whether there is a time period weather in the day weather which satisfies the working condition in the running interval, for example, a certain time period weather in the running interval is sunny, then the time period weather satisfies the working condition; preferably, in order to avoid the system missing the better light condition, the time period weather which satisfies the working condition can also include cloudy weather and other time period weathers which have relatively better natural light intensity. The time corresponding to the first time period weather which satisfies the working condition is taken as the next wake-up time. For example, the current time is 8 am, and the current weather is overcast. The time period weather corresponding to 11 am to 12 pm in the day weather is sunny, and the time period weather corresponding to 1 pm to 2 pm is also sunny, and the time period weather of the rest of the time is overcast. Then 11 am is taken as the next wake-up time. If the time period weather is all overcast, the first preset time is added to the current time to obtain the next wake-up time, so as to avoid the change of the subsequent weather information and the natural light condition which may be good, resulting in the system missing the better light condition. For example, the current time is 10 am, and the first preset time is 2 hours, so the corresponding next wake-up time is 12 am.

[0104] In the embodiment, when the current time does not satisfy the working condition, the time corresponding to the first time period weather which satisfies the working condition in the day weather is taken as the next wake-up time, which is beneficial to guarantee that the controller can have better natural light intensity when it is woken up next time. If the time period weather in the day weather is not conducive to the system to generate electricity, the first preset time is added to the current time to obtain the next wake-up time, so as to prevent the change of the time period weather after a period of time, resulting in the system missing the better light condition.

[0105] Optionally, when the light intensity information does not satisfy the working condition, the next wake-up time is obtained according to the current time and the wake-up strategy, comprising:

[0106] According to the light change stage in which the current time is located, a corresponding wake-up interval is obtained, wherein the light change stage includes a light enhancement stage and a light weakening stage, the wake-up interval corresponding to the light enhancement stage decreases with time, and the wake-up interval corresponding to the light weakening stage increases with time.

[0107] The wake-up interval is added to the current time to obtain the next wake-up time.

[0108] Specifically, the light change stage referred to in the present application represents each change stage of natural light in the running interval, the natural light intensity generally gradually increases from sunrise time to noon (corresponding to the light enhancement stage), and gradually decreases from noon to sunset time (corresponding to the light weakening stage), when the current time is in the light enhancement stage, in order to avoid missing better light and achieving high power generation of the system, the corresponding wake-up interval decreases with time; when the current time is in the light weakening stage, in order to avoid frequent start-stop of the system in a running environment with poor light conditions, causing energy waste, the corresponding wake-up interval increases with time.

[0109] Optionally, the light change stage includes at least two light enhancement stages and at least two light weakening stages. Preferably, six light change stages can be divided based on the running interval of the system, including three light enhancement stages (for the convenience of understanding and description, respectively referred to as the first stage, the second stage and the third stage), and three light weakening stages (for the convenience of understanding and description, respectively referred to as the fourth stage, the fifth stage and the sixth stage).

[0110] When the current time is in the first stage (such as sunrise time to 9 o'clock in the morning), it is indicated that the current natural light intensity is in a weak stage, and the natural light intensity change trend is in a weak enhancement stage, this stage does not need to set too fast wake-up frequency (that is, the wake-up interval should not be too short), the next wake-up time is set as the current time plus the first wake-up interval (such as 32 minutes), and the system is controlled to enter the sleep mode;

[0111] When the current time is in the second stage (such as 9 o'clock to 11 o'clock in the morning), it is indicated that the current natural light intensity is in a stable rising stage, the wake-up frequency should be correspondingly increased to ensure that the system identifies the light intensity information as soon as possible to meet the working condition of the running environment, thereby increasing the power generation of the system, the next wake-up time is set as the current time plus the second wake-up interval (such as 16 minutes), and the system is controlled to enter the sleep mode;

[0112] When the current time is in the third stage (such as 11 o'clock to 13 o'clock in the afternoon), it is indicated that the current natural light intensity is in the strongest stage, the third stage has the fastest wake-up frequency, which is beneficial to improve the power generation of the system, the next wake-up time is set as the current time plus the third wake-up interval (such as 8 minutes), and the system is controlled to enter the sleep mode;

[0113] When the current time is in the fourth stage (from 13:00 to 15:00), it indicates that the current natural light intensity has a downward trend, but still has a good natural light intensity, and the wake-up frequency should be decreased accordingly, the next wake-up time is set as the current time plus the fourth wake-up interval (for example, 12 minutes), and the system is controlled to enter the sleep mode;

[0114] When the current time is in the fifth stage (from 15:00 to 18:00), it indicates that the current natural light intensity is in a stable downward stage, and too many wake-up times can increase the additional system energy consumption, the next wake-up time is set as the current time plus the fifth wake-up interval (for example, 24 minutes), and the system is controlled to enter the sleep mode;

[0115] When the current time is in the sixth stage (from 18:00 to sunset), it indicates that the current natural light intensity is weak and has a significant downward trend, the next wake-up time is set as the current time plus the sixth wake-up interval (for example, 40 minutes), and the system is controlled to enter the sleep mode.

[0116] It should be understood that the time interval covered by the six stages in the embodiment can coincide with the operation interval or be within the operation interval. If the current time is after the sixth stage and before the end time of the operation interval, the next wake-up time can be determined according to the sunrise and sunset time, and preferably, the time interval covered by the six stages in the embodiment coincides with the operation interval.

[0117] In the embodiment, according to the light change stage in which the current time is located, the corresponding wake-up interval is obtained, the wake-up interval corresponding to the light enhancement stage gradually becomes shorter, which is conducive to improving the power generation of the system, and the wake-up interval corresponding to the light weakening stage gradually becomes longer, which is conducive to improving the scientificity and rationality of the next wake-up time, improving the power generation of the system while reducing the system energy consumption.

[0118] Optionally, after the photovoltaic power generation system is controlled to enter the working mode when the time information, the weather information and the light intensity information all satisfy the working condition, the method further comprises:

[0119] After the second preset time, returning to the step of acquiring the operation environment information;

[0120] Or;

[0121] Every third preset time, returning to the step of acquiring the operation environment information, wherein the third preset time is less than the second preset time;

[0122] When the light intensity information does not satisfy the working condition, the photovoltaic power generation system is kept in the working mode and starts timing to obtain the duration time;

[0123] When the duration is less than or equal to the preset time threshold and the illumination intensity information meets the working condition, the timing is ended.

[0124] When the duration is greater than the time threshold, the photovoltaic power generation system is controlled to enter the sleep mode, and a second preset time is added to the current time to obtain the next wake-up time.

[0125] Specifically, after the photovoltaic power generation system is controlled to enter the working mode, each item of the running environment information can change, so that the system can be prevented from working in an unsuitable running environment for a long time. The step of obtaining the running environment information can be returned after the second preset time (for example, 10 minutes), and each item of the running environment information can be re-judged.

[0126] Specifically, the vehicle can encounter a scene in which the illumination intensity information frequently changes (for example, the vehicle travels in a shaded section), and in this scene, it is easy to cause the system to frequently switch modes and the system stability is poor by simply depending on whether the instantaneous illumination intensity information meets the working condition. The step of obtaining the running environment information can be returned every third preset time (for example, 500 milliseconds), and when the illumination intensity information does not meet the working condition, the system is kept in the working mode and the timing is started to obtain the duration in which the illumination intensity information does not meet the working condition. If the duration is less than or equal to the preset time threshold (for example, 2 minutes) and the illumination intensity information obtained every third preset time changes to meet the working condition, the timing is ended. In this case, the duration in which the illumination intensity information does not meet the working condition is short, the current running environment is still conducive to ensuring the cost performance of the system power generation, and the system can continue to keep the working mode without switching states. If the obtained duration is greater than the time threshold, it is indicated that the duration in which the illumination intensity information does not meet the working condition is long, and the system is controlled to enter the sleep mode to prevent the system from having long-term energy consumption higher than the power generation amount. A second preset time is added to the current time to obtain the next wake-up time.

[0127] In the embodiment, when the system enters the working mode to start power generation, the running environment of the system can change, and the system can be prevented from running in an unsuitable running environment for a long time to cause unnecessary energy consumption by re-judging whether each item of the running environment information meets the working condition through the step of obtaining the running environment information after the second preset time. Or the step of obtaining the running environment information is returned every third preset time to judge whether the current running environment is continuously unsuitable for the working condition or is unsuitable for the working condition due to frequent fluctuations of the illumination intensity information, so as to prevent the system from producing sharp fluctuations in a scene in which the illumination intensity information changes sharply and to be conducive to ensuring the smooth running of the system.

[0128] Optionally, as Figure 2 The photovoltaic power generation system is in communication connection with the vehicle information system; in response to a wake-up signal issued at a preset wake-up time, environmental information is acquired, including:

[0129] In response to the wake-up signal, the network update state of the vehicle information system is acquired;

[0130] When the network update state is an updated state, time information and weather information issued by the vehicle information system are received;

[0131] When the network update state is an un-updated state, time information and weather information before the photovoltaic power generation system enters the sleep mode are acquired, and the weather information is set as sunny.

[0132] In the embodiment, the controller is woken up and communicates with the vehicle information system to acquire time information and weather information, but the vehicle information system may not be updated in time in a poor network environment, so when the network update state is an un-updated state, time information and weather information before the photovoltaic power generation system enters the sleep mode are acquired, and the weather information is set as sunny (such as setting the current weather as sunny or setting the weather of each time period of the day as sunny), as the current time information and weather information. This is advantageous to avoid the vehicle information system not being updated in time, causing the system to miss a good operating environment, and further ensure high power generation of the system.

[0133] The overall steps of the control method of the photovoltaic power generation system are further introduced below with a specific embodiment.

[0134] (1) The controller is woken up by a wake-up clock at a wake-up time set before the photovoltaic power generation system enters the sleep mode;

[0135] (2) The controller acquires the network update state of the vehicle information system, if the network update state is an updated state, time information (including sunrise and sunset time and current time) and weather information (including current weather and weather of the day) issued by the vehicle information system are received; if the network update state is an un-updated state, time information and weather information received before the system enters the sleep mode are acquired, and the weather information is set as sunny;

[0136] (3) The operating interval of the photovoltaic power generation system is determined according to the sunrise and sunset time, considering that the natural light intensity is weak near the sunrise and sunset time, the start time of the operating interval is obtained by delaying 30 minutes from the sunrise time; the end time of the operating interval is obtained by advancing 30 minutes from the sunset time;

[0137] (4) if the current time is before the running interval, setting the sunrise time of the current day as the next wake-up time and controlling the system to enter the sleep mode; if the current time is after the running interval, setting the sunrise time of the next day as the next wake-up time and controlling the system to enter the sleep mode;

[0138] (5) if the current time is in the running interval, and the current weather is not sunny, setting the time corresponding to the first time period with sunny weather in the current day as the next wake-up time and controlling the system to enter the sleep mode; if the weather of the current day is not sunny, setting the next wake-up time as the sunrise time of the next day and controlling the system to enter the sleep mode;

[0139] (6) if the current time is in the running interval and the current weather is sunny, the controller receives the light intensity information from the light collection device and predicts the power generation. If the power generation is greater than the sum of the energy consumption of the photovoltaic power generation system and the power consumption compensation value, the system enters the working mode to generate power; if the power generation is less than or equal to the sum of the energy consumption of the photovoltaic power generation system and the power consumption compensation value, the current time is determined according to the wake-up strategy, and the corresponding wake-up interval is determined, and the next wake-up time is obtained by adding the wake-up interval to the current time;

[0140] (7) when the next wake-up time exceeds the running interval, setting the next wake-up time as the sunrise time of the next day and controlling the system to enter the sleep mode.

[0141] In the embodiment, the running environment information such as time information, weather information and light intensity information is obtained, so that the real running environment of the system is mastered, and a reliable basis is provided for reasonable control of the system; the types of running environment information are sequentially judged, and the next wake-up time is dynamically adjusted based on the wake-up interval, which is beneficial to realize high power generation and low energy consumption of the system.

[0142] Another embodiment of the present application provides a control device of a photovoltaic power generation system, comprising:

[0143] an acquisition module, configured to acquire running environment information in response to a wake-up signal sent at a preset wake-up time, wherein the running environment information comprises time information, weather information and light intensity information;

[0144] a processing module, configured to judge whether the time information, the weather information and the light intensity information meet preset working conditions;

[0145] When any one of the time information, the weather information and the light intensity information does not satisfy the working condition, according to the running environment information and a preset wake-up strategy, a next wake-up time is set, and the photovoltaic power generation system is controlled to enter a sleep mode, wherein the wake-up strategy comprises a plurality of wake-up intervals, and a change trend of the plurality of wake-up intervals with time is in a negative correlation relationship with a change trend of natural light intensity with time.

[0146] When the time information, the weather information and the light intensity information all satisfy the working condition, the photovoltaic power generation system is controlled to enter a working mode.

[0147] The control device of the photovoltaic power generation system and the control method of the photovoltaic power generation system provided by the embodiment can produce basically the same technical effects, and details are not repeated here.

[0148] Another embodiment of the present application provides a vehicle, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the control method of the photovoltaic power generation system when executing the computer program.

[0149] The vehicle and the control method of the photovoltaic power generation system provided by the embodiment can produce basically the same technical effects, and details are not repeated here.

[0150] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications shall fall within the protection scope of the present application.

Claims

1. A control method of a photovoltaic power generation system, characterized by, The method comprises the following steps: obtaining running environment information in response to a wake-up signal issued at a preset wake-up time, wherein the running environment information comprises time information, weather information and light intensity information; the time information comprises sunrise and sunset time and current time; determining whether the time information, the weather information and the light intensity information satisfy a preset working condition; when any one of the time information, the weather information and the light intensity information does not satisfy the working condition, setting a next wake-up time according to the running environment information and a preset wake-up strategy, and controlling a photovoltaic power generation system to enter a sleep mode, wherein the wake-up strategy comprises a plurality of wake-up intervals, and the plurality of wake-up intervals have a negative correlation with a change trend of natural light intensity over time; when the time information, the weather information and the light intensity information all satisfy the working condition, controlling the photovoltaic power generation system to enter a working mode.

2. The control method of a photovoltaic power generation system according to claim 1, characterized by, The weather information comprises current weather; the determination of whether the time information, the weather information and the light intensity information satisfy the preset working condition comprises: obtaining a running interval of the photovoltaic power generation system according to the sunrise and sunset time; when the current time is within the running interval, the time information satisfies the working condition; when the current weather is sunny, the weather information satisfies the working condition.

3. The control method of a photovoltaic power generation system according to claim 2, characterized by, The running environment information further comprises light-receiving area information; the determination of whether the time information, the weather information and the light intensity information satisfy the preset working condition further comprises: predicting a power generation power of the photovoltaic power generation system based on the light intensity information and the light-receiving area information; when the power generation power is greater than a preset power threshold, the light intensity information satisfies the working condition, wherein the power threshold comprises a power consumption value of the photovoltaic power generation system.

4. The control method of a photovoltaic power generation system according to claim 2, characterized by, The weather information further comprises current weather; the setting of the next wake-up time according to the running environment information and the preset wake-up strategy when any one of the time information, the weather information and the light intensity information does not satisfy the working condition comprises: when the time information does not satisfy the working condition, obtaining the next wake-up time according to the sunrise and sunset time; when the weather information does not satisfy the working condition, obtaining the next wake-up time according to the current weather; when the light intensity information does not satisfy the working condition, determining the wake-up interval according to the current time and the wake-up strategy to obtain the next wake-up time; after obtaining the next wake-up time, controlling the photovoltaic power generation system to enter the sleep mode.

5. The control method of a photovoltaic power generation system according to claim 4, characterized by, The current weather comprises a plurality of time period weathers arranged in time sequence; the obtaining of the next wake-up time according to the current weather when the weather information does not satisfy the working condition comprises: determining whether there is a time period weather in the current weather that satisfies the working condition within the running interval; If yes, a time corresponding to weather of the time period satisfying the working condition is taken as the next wake-up time; If no, a first preset time is added to the current time to obtain the next wake-up time.

6. The control method of a photovoltaic power generation system according to claim 4, characterized by, The method further comprises: According to the illumination variation stage in which the current time is located, the corresponding wake-up interval is obtained, wherein the illumination variation stage comprises an illumination enhancement stage and an illumination weakening stage, the wake-up interval corresponding to the illumination enhancement stage decreases with time, and the wake-up interval corresponding to the illumination weakening stage increases with time; The wake-up interval is added to the current time to obtain the next wake-up time.

7. The control method of a photovoltaic power generation system according to any one of claims 1 to 6, characterized by, After the photovoltaic power generation system is controlled to enter the working mode when the time information, the weather information and the illumination intensity information all satisfy the working condition, the method further comprises: After a second preset time, the step of receiving the running environment information is returned to; Or; Every third preset time, the step of receiving the running environment information is returned to, wherein the third preset time is less than the second preset time; When the illumination intensity information does not satisfy the working condition, the photovoltaic power generation system is kept in the working mode and timing is started to obtain a duration; When the duration is less than or equal to a preset time threshold and the illumination intensity information satisfies the working condition, the timing is ended; When the duration is greater than the time threshold, the photovoltaic power generation system is controlled to enter the dormant mode, and the second preset time is added to the current time to obtain the next wake-up time.

8. The control method of a photovoltaic power generation system according to claim 7, characterized by, The photovoltaic power generation system is in communication connection with a vehicle information system; and the running environment information is acquired in response to a wake-up signal issued at a preset wake-up time, and the method comprises: In response to the wake-up signal, a network update state of the vehicle information system is acquired; When the network update state is an updated state, the time information and the weather information issued by the vehicle information system are received; When the network update state is an un-updated state, the time information and the weather information before the photovoltaic power generation system enters the dormant mode are acquired, and the weather information is set as sunny.

9. A control device for a photovoltaic power generation system, characterized by comprising: The method comprises: An acquisition module is configured to acquire running environment information in response to a wake-up signal issued at a preset wake-up time, wherein the running environment information comprises time information, weather information and illumination intensity information; and the time information comprises sunrise and sunset time and current time; A processing module is configured to determine whether the time information, the weather information and the illumination intensity information satisfy a preset working condition. when any one of the time information, the weather information and the light intensity information does not satisfy the working condition, setting a next wake-up time according to the running environment information and a preset wake-up strategy, and controlling the photovoltaic power generation system to enter a sleep mode, wherein the wake-up strategy comprises a plurality of wake-up intervals, and a change trend of the plurality of wake-up intervals with time is in a negative correlation relationship with a change trend of natural light intensity with time; when all of the time information, the weather information and the light intensity information satisfy the working condition, controlling the photovoltaic power generation system to enter a working mode.

10. A vehicle characterized by comprising: A computer readable storage medium storing a computer program, wherein the computer program is configured to cause a processor to perform the control method of the photovoltaic power generation system according to any one of claims 1 to 8.

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