Charging control method, device, solar charge controller, and storage medium

Abstract

A charging control method, device, solar charge controller, and storage medium includes the steps of: detecting an initial open-circuit voltage of at least one power input source, and determining an initial charging plan corresponding to the power input source according to the initial open-circuit voltage corresponding to each power input source; detecting input source current information of the power input source after the power input source executes the initial charging plan, and determining whether to adjust the initial charging plan according to the input source current information; and, after determining to adjust the initial charging plan, detecting a current open-circuit voltage of the power input source, generating a corresponding current charging plan based on the current open-circuit voltage, and controlling the power input source to execute the current charging plan.

Description

[Technical Field]

[0001] The present application relates to the field of solar charge control technology, such as a charge control method, an apparatus, a solar charge controller, and a storage medium. [Background technology]

[0002] A solar cell is a device that converts light energy into electricity and can output voltage and current as long as the illuminance meets certain illumination conditions. Although a solar cell can generate electricity but cannot store it, the electricity generated by a solar cell can be charged and stored in a storage battery.

[0003] To improve the charging efficiency of solar charging systems, some solar charging systems distinguish between different power input source types (e.g., single-string solar cells, multiple-string solar cells) according to the voltage of the power input source, and set the input voltage of the solar charging system near the maximum power point of the power input source according to the power input source type, thereby improving the utilization rate of the solar cells. However, as shown in Figures 1 and 2, in low light conditions, the output voltages of a single-string solar cell and a second-string solar cell with different power input source types are both low. In this case, when the output voltages are close (i.e., the open-circuit voltages of a single-string solar cell and a second-string solar cell in Figures 1 and 2 are both 16 volts (V)), detecting and determining the power input source type based only on the input voltage will result in inaccurate determination of the power input source type and poor charging efficiency of the solar panel. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a charging control method, device, solar charging controller and storage medium to solve the problem of reduced charging efficiency of a power input source after the illumination becomes strong due to incorrect determination of the power input source type in low illumination. [Means for solving the problem]

[0005] According to one aspect of the present application, there is provided a charge control method, the charge control method comprising: detecting an initial open-circuit voltage of at least one power input source, and determining an initial charging plan corresponding to each power input source according to the initial open-circuit voltage corresponding to the power input source; After the power input source executes the initial charging plan, detecting input source current information of the power input source, and determining whether to adjust the initial charging plan according to the input source current information; After determining an adjustment to the initial charging plan, the method includes detecting a current open-circuit voltage of the power input source, generating a current charging plan corresponding to the current open-circuit voltage based on the current open-circuit voltage, and controlling the power input source to execute the current charging plan.

[0006] According to another aspect of the present application, there is provided a charge control device, the charge control device comprising: an initial charging plan determination module configured to detect an initial open-circuit voltage of at least one power input source, and determine an initial charging plan corresponding to each power input source according to the initial open-circuit voltage corresponding to the power input source; an initial charging plan adjustment module configured to detect input source current information of the power input source after the power input source executes the initial charging plan, and determine whether to adjust the initial charging plan according to the input source current information; and a current charging plan execution module configured to, after determining an adjustment to the initial charging plan, detect a current open-circuit voltage of the power input source, generate a current charging plan corresponding to the current open-circuit voltage based on the current open-circuit voltage, and control the power input source to execute the current charging plan.

[0007] According to another aspect of the present application, there is provided a solar charge controller, the solar charge controller comprising: at least one processor; a memory communicatively coupled to the at least one processor; A computer program that can be executed by the at least one processor is stored in the memory, and the computer program is executed by the at least one processor to cause the at least one processor to perform a charging control method described in any embodiment of the present application.

[0008] According to another aspect of the present application, there is provided a computer-readable storage medium having computer instructions stored therein, the computer instructions being used to implement a charging control method described in any of the embodiments of the present application when executed by a processor. [Brief explanation of the drawings]

[0009] Below, we will introduce the drawings that are necessary to use in explaining the embodiments. The drawings in the following description are only some embodiments of the present application, and those skilled in the art can further obtain other drawings based on these drawings without any creative work. [Figure 1] FIG. 1 is a schematic diagram of a PV curve (open circuit voltage is 16 V) of a certain string of solar cells provided in the background art of this application under an illumination of 70 W / M2. [Figure 2] FIG. 1 is a schematic diagram of a PV curve (open circuit voltage is 16 V) of a two-string solar cell under an illumination of 8 W / M2 provided in the background art of this application. [Figure 3] 2 is a flowchart of a charge control method according to a first embodiment of the present invention. [Figure 4] 10 is a flowchart of a charge control method according to a second embodiment of the present invention. [Figure 5] 1 is a schematic diagram of a PV curve (open circuit voltage is 19.3 V) of a certain string of solar cells under an illumination intensity of 150 W / M2 (Imp=2.1 A) according to an embodiment of the present application. [Figure 6] 1 is a schematic diagram of a PV curve (open circuit voltage is 38.6 V) of a certain two-string solar cell under an illumination intensity of 150 W / M2 (Imp=2.1 A) according to an embodiment of the present application. [Figure 7] 10 is a flowchart of a charge control method according to a third embodiment of the present invention. [Figure 8] FIG. 10 is a structural schematic diagram of a charge control device according to a fourth embodiment of the present invention. [Figure 9] 1 is a structural schematic diagram of a solar charge controller that realizes a charge control method according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0010] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and the described embodiments are not all of the embodiments but only some of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0011] It should be noted that the terms "first," "second," etc. in the present specification, claims, and drawings are used to distinguish between similar objects and not necessarily to describe a particular order or priority. Such terms may be interchanged under appropriate circumstances, thereby enabling the embodiments of the present application described herein to be performed in orders other than those shown or described herein. It should be noted that the terms "comprise" and "have," and any variations thereof, are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those expressly listed and may include other steps or units not expressly listed or inherent in such process, method, product, or apparatus.

[0012] Example 1

[0013] 3 is a flowchart of a charging control method according to a first embodiment of the present invention, which is applicable to automatically determining the power input source type for solar charging control. The charging control method can be performed by a charging control device, which can be implemented in the form of hardware and / or software, and can be located in a solar charging controller. As shown in FIG. 3, the charging control method includes the following steps: In S110, an initial open-circuit voltage of at least one power input source is detected, and an initial charging plan corresponding to each power input source is determined according to the initial open-circuit voltage corresponding to the power input source.

[0014] The power input source may be of different types such as a single string of photovoltaic panels or a multi-string photovoltaic panel system.

[0015] In this embodiment, the solar charge controller can simultaneously detect at least one power input source, and detect the power input source type of each power input source in real time, i.e., determine whether each power input source is a single-string solar photovoltaic panel system or a multi-string solar photovoltaic panel system.

[0016] For example, when connecting a corresponding power storage device to a power input source and charging the power storage device, the solar charge controller acquires the initial open-circuit voltage of each power input source. The power storage device is a device that can store power, and optionally, the power storage device may be a battery system such as a lead-acid battery, a lithium-ion battery, or other devices.

[0017] It is known that each type of power input source corresponds to an open circuit voltage range under a given illumination and temperature condition.

[0018] For example, take an example where V1, V2, ..., Vn, Vn+1 are specific voltage values ​​of a solar charging system, and the first power input source, the second power input source, ... the Nth power input source are power input sources corresponding to different power input source types. The open-circuit voltage range of each power input source type under a predetermined illuminance and temperature condition is set as the V1-V2 voltage range of the first power input source under a predetermined illuminance and temperature condition, the V2-V3 voltage range of the second power input source under a predetermined illuminance and temperature condition, ... and by analogy, the Vn-Vn+1 voltage range is set as the open-circuit voltage range of the Nth power input source under a predetermined illuminance and temperature condition.

[0019] It should be noted that this application is based on the assumption that the solar cells in each string have similar specifications, and that there is no overlap between the open circuit voltage ranges of the solar charging system.

[0020] Based on the above, when the solar charge controller detects the initial open-circuit voltage of a power input source, it determines the open-circuit voltage range of the initial open-circuit voltage of the power input source, and further determines the power input source type corresponding to the power input source.

[0021] After determining the power input source type corresponding to each of the power input sources, a corresponding initial charging plan is determined according to the corresponding power input source type, and the solar charging controller controls the solar charging system to execute the initial charging plan and start charging until charging of the solar charging system is completed.

[0022] The initial charging plan determines the type of the power input source according to the initial open-circuit voltage of each power input source, and then determines the minimum input voltage of the power input source at this time according to the power input source type, and the power input source executes the charging plan for charging operation at the minimum input voltage.

[0023] According to the above embodiment, if the initial open-circuit voltage of the power input source is not within the open-circuit voltage range of the power input source type under the predetermined illumination and temperature conditions, the open-circuit voltage of the power input source is re-detected, that is, the updated open-circuit voltage of the power input source is re-detected, and then it is determined again whether it is within the open-circuit voltage range of the power input source type under the predetermined illumination and temperature conditions based on the updated open-circuit voltage. It can be understood that at this time, the solar charging system does not perform any charging logic in this process.

[0024] In S120, after the power input source executes the initial charging plan, input source current information of the power input source is detected, and it is determined whether to adjust the initial charging plan according to the input source current information.

[0025] For example, after each power input source executes its corresponding initial charging plan, the solar charging controller controls the solar charging system to continuously execute the initial charging plan for a preset time, and the continuous execution of the initial charging plan for a preset time can be selected and set by those skilled in the art according to actual circumstances. Optionally, the preset time for continuously executing the initial charging plan may be several seconds or tens of seconds. Setting a short charging plan time allows for quick re-determination of whether the current charging plan is appropriate, which is advantageous for timely adjustment of the charging plan according to the type of power input source.

[0026] After controlling the solar charging system to continuously execute the initial charging plan for a preset time, the solar charging controller detects the input source current information of the power input source, i.e., detects the input current information of the solar charging system, and further determines whether to adjust the initial charging plan according to the input source current information.

[0027] Based on the above, if the input current of the input source current information of the first detected power input source is greater than the input current threshold, the initial open-circuit voltage of the power input source is sufficient to distinguish the power input source type corresponding to the power input source, that is, the power input source type corresponding to the power input source determined in step S110 and the corresponding initial charging plan determined according to the corresponding power input source type are both correct results, and at this time, the solar charging controller controls the solar charging system to continuously execute the initial charging plan corresponding to the power input source until charging of the solar charging system is completed.

[0028] Correspondingly, if the input current of the input source current information of the initially detected power input source is less than the input current threshold, the judgment result for the power input source type corresponding to the power input source based on the initial open-circuit voltage of the power input source is unreliable. In this case, the power input source is controlled to continuously execute the initial charging plan within a preset time range, and then it is re-determined whether the input current of the input source current information of the detected power input source is greater than the input current threshold.

[0029] Based on the above, the input current of the input source current information of the power input source is continuously detected, and when it is detected that the input current of the input source current information of the power input source is greater than an input current threshold, it is determined to adjust the initial charging plan, and the power input source is controlled to a no-load state.

[0030] As can be understood, if the input current of the continuously detected input source current information of the power input source is equal to or less than the input current threshold, it is determined not to adjust the initial charging plan.

[0031] In S130, after determining to adjust the initial charging plan, a current open-circuit voltage of the power input source is detected, a corresponding current charging plan is generated based on the current open-circuit voltage, and the power input source is controlled to execute the current charging plan.

[0032] For example, after deciding to adjust the initial charging plan, the solar charging system first stops charging the storage system, so that the power input source is in an unloaded state, i.e., the solar charging system is in an unloaded state, and re-detects the open-circuit voltage of the power input source.

[0033] Based on the above, the current open-circuit voltage of the power input source is detected, and the type of power input source corresponding to the current open-circuit voltage is determined based on the open-circuit voltage range of the current open-circuit voltage, and a corresponding current charging plan is generated according to the type of power input source corresponding to the current open-circuit voltage, and the solar charging controller controls the solar charging system to start charging by executing the current charging plan until charging of the solar charging system is completed.

[0034] Based on the above embodiment, after detecting the current open-circuit voltage of the power input source, if the current open-circuit voltage is not within the open-circuit voltage range under the predetermined illumination and temperature conditions of any power input source type, the updated open-circuit voltage of the power input source is detected again, that is, the process returns to step S110 to re-detect the open-circuit voltage of the power input source.

[0035] In an embodiment of the present application, an initial open-circuit voltage of at least one power input source is detected, and an initial charging plan corresponding to each power input source is determined according to the initial open-circuit voltage corresponding to each power input source. After the power input source executes the initial charging plan, input source current information of the power input source is detected, and it is determined whether to adjust the initial charging plan according to the input source current information. After it is determined that the initial charging plan should be adjusted, a current open-circuit voltage of the power input source is detected, and a corresponding current charging plan is generated based on the current open-circuit voltage. The power input source is controlled to execute the current charging plan. This solves the problem of reduced charging efficiency of the power input source after illumination becomes strong due to incorrect determination of the power input source type in low illumination, and realizes automatic determination of the charging control plan while improving the charging efficiency and utilization rate of the power input source.

[0036] Example 2

[0037] 4 is a flowchart of a charging control method according to a second embodiment of the present invention, and this embodiment will explain the step of "determining an initial charging plan corresponding to each power input source according to an initial open-circuit voltage corresponding to the power input source." For example, based on the open-circuit voltage range of the power input source type under a predetermined illumination and temperature condition, the open-circuit voltage range of the initial open-circuit voltage corresponding to each power input source is determined, the power input source type corresponding to the power input source is determined, and the initial charging plan corresponding to the power input source is determined according to the power input source type.

[0038] Referring to Figures 5 and 6, in order to solve the problem of the decrease in charging efficiency of the power input source after the illumination becomes strong due to the misjudgment of the power input source type in low illumination, the present application utilizes the following characteristics of the solar cell in the solar charging system: 1, the stronger the illumination, the larger the output current; 2, after the solar illumination reaches a certain value, the difference in the open circuit voltage output by the solar cell with different numbers of strings is obvious; that is, as shown in Figures 5 and 6, a single string of solar cells (open circuit voltage is 19.3V) and a second string of solar cells (open circuit voltage is 38.6V) respectively output 150 watts per square meter (W / m 2 Refer to the schematic diagram of the power-voltage (PV) curve under illumination (Imp=2.1 amperes (A)). When the charging current is greater than a certain value, the power input source open-circuit voltage Vin is detected, and the power input source type is identified based on the power input source open-circuit voltage Vin. The solar charging system is then controlled to increase the solar charging efficiency with the corresponding charging voltage.

[0039] As shown in FIG. 4, the charging control method includes the following steps:

[0040] In S210, an initial open circuit voltage of at least one power input source is detected.

[0041] In S220, based on the open circuit voltage range of the power input source type under a predetermined illumination temperature condition, the open circuit voltage range of the initial open circuit voltage corresponding to each power input source is respectively determined, and the power input source type corresponding to the power input source is determined.

[0042] In S230, an initial charging plan corresponding to the power input source is determined according to the power input source type.

[0043] For example, taking the following solar cell parameters matching the solar charging system as an example, the maximum power (Pmp) is 200 watts (W), the open circuit voltage (V0) is 24.2V, the maximum power operating voltage (Vmp) is 19V, the maximum power operating current (Imp) is 10.53A, and the short circuit current (Isc) is 10.8A, and two strings of solar cells can be connected in series to form a 400W solar cell. Based on the above, if the solar charging system supports a maximum input voltage of 60V, a maximum allowable input power of 400W, and a maximum input current of 10.53A, it can simultaneously support charging one string of solar cells (200W) and two strings of solar cells (400W). The solar charging system is configured to determine that a power input source voltage in the range of 11V-35V is one string of solar cells and use a voltage of 17V as the minimum input voltage for one string of solar cells, and to determine that a power input source voltage in the range of 35V-60V is two strings of solar cells and use a voltage of 34V as the minimum input voltage for two strings of solar cells.

[0044] Based on the above, when the solar charging system is in low illumination, whether it is a single-string solar cell or a double-string solar cell, the input voltage is both less than 35V. At this time, the corresponding power input source type determined by the actual single-string solar cell and double-string solar cell is determined to be a single-string solar cell, and the solar charging system defaults to 17V as the minimum charging voltage, i.e., the minimum charging voltage of 17V is the initial charging plan corresponding to the determined power input source at this time. The output voltage of the solar cell operates at 17V, and the input current of the power input source is less than 2.1A, i.e., the power input source type corresponding to the power input source at this time cannot be accurately determined.

[0045] In S240, after the power input source executes the initial charging plan, input source current information of the power input source is detected, and it is determined whether to adjust the initial charging plan according to the input source current information.

[0046] Based on the above embodiment, the input source current information includes a first charging input current and a second charging input current, and the step of determining whether to adjust the initial charging plan according to the input source current information includes: a step of determining not to adjust the initial charging plan when the first charging input current is greater than an input current threshold; and a step of determining whether to adjust the initial charging plan according to the second charging input current when the first charging input current is less than an input current threshold.

[0047] Based on the above, the power input source is controlled to execute the initial charging plan within a preset time range. Then, the step of determining whether to adjust the initial charging plan according to the second charging input current includes the steps of: determining to adjust the initial charging plan and controlling the power input source to a no-load state when the second charging input current is greater than an input current threshold; and determining not to adjust the initial charging plan when the second charging input current is less than an input current threshold.

[0048] In S250, after determining to adjust the initial charging plan, the current open circuit voltage of the power input source is detected.

[0049] In S260, a power input source type corresponding to the current open-circuit voltage is determined based on the open-circuit voltage range of the current open-circuit voltage, a corresponding current charging plan is generated based on the power input source type corresponding to the current open-circuit voltage, and the power input source is controlled to execute the current charging plan.

[0050] Based on the above example, if the light intensity gradually increases and the charging current of the power input source exceeds 2.1A, it is determined that the initial charging plan needs to be adjusted, the solar charging system will stop charging, and re-evaluate the open-circuit voltage of each power input source.

[0051] As can be seen, at this time, with sufficient illumination intensity, the open-circuit voltage of the solar cells is sufficient to distinguish between one-string solar cells and two-string solar cells, so the solar charging system can accurately determine the number of strings of the solar cell board. That is, if the power input source type is one-string solar cells, the open-circuit voltage is determined to be within the power input source voltage range of 11V-35V, and the power input source of the one-string solar cells is determined to be operating at 17V to charge, that is, the 17V voltage is used as the minimum input voltage of the one-string solar cells as the current charging plan implemented. If the power input source type is two-string solar cells, the open-circuit voltage is determined to be within the power input source voltage range of 35V-60V, and the power input source of the two-string solar cells is determined to be operating at 34V to charge, that is, the 34V voltage is used as the minimum input voltage of the two-string solar cells as the current charging plan implemented. By analogy, the currently determined corresponding current charging plan is implemented for each power input source type. Based on this, by adjusting the charging plan for all power input sources in the solar charging system according to the type of power input source, each power input source in the solar charging system will charge and operate at the minimum input voltage, that is, they will all charge and operate near the maximum power point of the power input source, improving the utilization rate of the solar cells and making the utilization rate of the solar cells > 98%, that is, improving the charging efficiency of the solar charging panel.

[0052] In order to avoid the problem of incorrectly determining the type of power input source during low illumination, which may result in inaccurately executing a charging plan for a subsequent power input source and reducing the charging efficiency of the solar charging system, the present application determines the type of power input source corresponding to each power input source in a solar charging system based on its open-circuit voltage, and generates a charging plan for the power input source according to the power input source type. That is, if the type of power input source is correctly determined initially, the corresponding executed initial charging plan will be the same as the subsequently determined current charging plan. In this case, if the power input source whose type may have been incorrectly determined initially is also charged and operated according to the initial charging plan, it is necessary to distinguish between the two power input sources and then re-determine the charging plan, i.e., adjust the charging plan. If the type of power input source is incorrectly determined initially based on the initial open-circuit voltage, the corresponding executed initial charging plan will differ from the subsequently determined current charging plan. In this case, it is necessary to adjust the charging plan for the power input source, thereby obtaining the current charging plan.

[0053] For example, based on the above example, the determined corresponding power input source types for the actual 1-string solar battery and 2-string solar battery are both determined to be 1-string solar battery, and the minimum charging voltage of 17V is set as the initial charging plan corresponding to the determined power input source at this time, i.e., the determined initial charging plans for the 1-string solar battery and the 2-string solar battery, and both are charged and operated at the minimum charging voltage of 17V. Next, the power input source type is determined and the power input source is distinguished as being actually 1-string solar battery and 2-string solar battery, respectively. At this time, if the distinguished power input source type is the power input source of the 1-string solar battery, a charging operation is performed at the minimum charging voltage of 17V as the current charging plan, that is, the charging plan is adjusted, and the current charging plan is actually the same as the initial charging plan. If the distinguished power input source type is the power input source of the 2-string solar battery, a charging operation is performed at the minimum charging voltage of 34V as the current charging plan, that is, after the charging plan is adjusted, the current charging plan is different from the initial charging plan.

[0054] Based on the above embodiment, after detecting the current open-circuit voltage of the power input source, the method further includes a step of re-detecting an updated open-circuit voltage of the power input source if the current open-circuit voltage is not within an open-circuit voltage range under a predetermined illumination temperature condition of any power input source type.

[0055] It is known that the relationship between current and voltage of a solar battery is completely different from that of a conventional storage battery, and its output voltage and available current change according to the illuminance or temperature. In low illuminance, the output voltage drops significantly and the available current becomes very small. After the illuminance reaches a certain level, the output voltage rises to a relatively high level and the current gradually increases with the illuminance. The technical solutions of the embodiments of the present application solve the problem of incorrectly determining the type of power input source in low illuminance, and improve the charging efficiency of the solar charging panel after the illuminance becomes strong, avoiding resource waste. At the same time, it has the function of automatically determining the type of power input source, and without any hardware modifications, it achieves better charging control capabilities for the solar charging system, improves user experience, and reduces cost requirements.

[0056] Example 3

[0057] 7 is a flowchart of a charging control method according to Example 3 of the present application, which provides an optional embodiment based on the above Example. As shown in FIG. 7, the charging control method includes the following steps:

[0058] On the S310, the solar charging system begins charging.

[0059] In S311, the initial open circuit voltage of at least one power input source is detected.

[0060] In S312, it is determined whether the initial open circuit voltage corresponding to each power input source is within the open circuit voltage range under the illuminance and temperature conditions of the power input source type; if so, step S313 is executed; if not, step S311 is executed.

[0061] In S313, a power input source type corresponding to the power input source is determined, and an initial charging plan corresponding to the power input source is determined according to the power input source type.

[0062] For example, take an example where V1, V2, ..., Vn, Vn+1 are specific voltage values ​​of a solar charging system, and the first power input source, the second power input source, ... the Nth power input source are power input sources of different power input source types. The open-circuit voltage range of each power input source type under a predetermined illuminance and temperature condition is set as the V1-V2 voltage range of the first power input source under a predetermined illuminance and temperature condition, the V2-V3 voltage range of the second power input source under a predetermined illuminance and temperature condition, ... and by analogy, the Vn-Vn+1 voltage range is set as the open-circuit voltage range of the Nth power input source under a predetermined illuminance and temperature condition.

[0063] Based on the above, if the initial open-circuit voltage of the power input source is Vin, and the initial open-circuit voltage Vin is in the V1-V2 voltage range, then the power input source type corresponding to the power input source is the first power input source, i.e., the power input source executes the initial charging plan corresponding to the first voltage input source; if the initial open-circuit voltage Vin is in the V2-V3 voltage range, then the power input source type corresponding to the power input source is the second power input source, i.e., the power input source executes the initial charging plan corresponding to the second voltage input source; by analogy, if the initial open-circuit voltage Vin is in the Vn-Vn+1 voltage range, then the power input source type corresponding to the power input source is the Nth power input source, i.e., the power input source executes the initial charging plan corresponding to the Nth voltage input source.

[0064] In S314, the power input source is controlled to execute the initial charging plan within a preset time range.

[0065] In S315, detect the first charging input current of the power input source and determine whether the first charging input current is greater than the input current threshold; if so, execute step S322; if not, execute step S316.

[0066] In S316, the power input source is controlled to execute the initial charging plan within a preset time range.

[0067] In S317, detect the second charging input current of the power input source and determine whether the second charging input current is greater than the input current threshold; if so, execute step S318; if not, execute step S316.

[0068] In S318, the adjustment of the initial charging plan is determined and the power input source is controlled to a no-load state.

[0069] In S319, the present open circuit voltage of the power input source is detected.

[0070] In S320, it is determined whether the current open circuit voltage is within the open circuit voltage range under the predetermined illumination and temperature conditions of the power input source type, and if so, step S321 is executed; if not, step S311 is executed.

[0071] For example, if the current open circuit voltage is not within the open circuit voltage range under a predetermined illumination and temperature condition for any type of power input source, an updated open circuit voltage of the power input source is redetected.

[0072] In S321, a corresponding current charging plan is generated based on the current open-circuit voltage, and the power input source is controlled to execute the current charging plan.

[0073] Based on the above example, the current charging plan for the current open-circuit voltage can be determined in the same way. If the current open-circuit voltage of the power input source is Vin1 and the initial open-circuit voltage Vin1 is in the V1-V2 voltage range, then the power input source type corresponding to the power input source is the first power input source, i.e., the power input source executes the current charging plan corresponding to the first voltage input source. If the current open-circuit voltage is Vin1 and is in the V2-V3 voltage range, then the power input source type corresponding to the power input source is the second power input source, i.e., the power input source executes the current charging plan corresponding to the second voltage input source. By analogy, if the current open-circuit voltage is Vin1 and is in the Vn-Vn+1 voltage range, then the power input source type corresponding to the power input source is the Nth power input source, i.e., the power input source executes the current charging plan corresponding to the Nth voltage input source.

[0074] In S322, the solar charge controller controls the solar charging system to continuously execute the initial charging plan corresponding to the power input source.

[0075] Example 4

[0076] FIG. 8 is a structural schematic diagram of a charging control device according to a fourth embodiment of the present invention. As shown in FIG. 8, the charging control device includes: an initial charging plan determination module 410 configured to detect an initial open-circuit voltage of at least one power input source, and determine an initial charging plan corresponding to each power input source according to the initial open-circuit voltage corresponding to the power input source; an initial charging plan adjustment module 420 configured to detect input source current information of the power input source after the power input source executes the initial charging plan, and determine whether to adjust the initial charging plan according to the input source current information; and a current charging plan execution module 430 configured to, after determining to adjust the initial charging plan, detect a current open-circuit voltage of the power input source, generate a corresponding current charging plan based on the current open-circuit voltage, and control the power input source to execute the current charging plan.

[0077] Optionally, the step of determining an initial charging plan corresponding to each power input source in response to an initial open circuit voltage corresponding to the power input source further comprises: determining an open-circuit voltage range of an initial open-circuit voltage corresponding to each power input source based on the open-circuit voltage range of the power input source type under a predetermined illumination temperature condition, and determining a power input source type corresponding to the power input source; determining an initial charging plan corresponding to the power input source according to the power input source type.

[0078] Optionally, the input source current information includes a first charging input current and a second charging input current; determining whether to adjust the initial charging plan according to the input source current information; determining not to adjust the initial charging schedule if the first charging input current is greater than an input current threshold; If the first charging input current is less than an input current threshold, determining whether to adjust the initial charging plan according to the second charging input current.

[0079] Optionally, determining whether to adjust the initial charging plan according to the second charging input current includes: If the second charging input current is greater than an input current threshold, determining an adjustment to an initial charging plan and controlling the power input source to a no-load state; and determining not to adjust the initial charging plan if the second charging input current is less than an input current threshold.

[0080] Optionally, the charging control device The device further includes an initial charging plan execution module configured to execute control so that the power input source executes the initial charging plan within a preset time range.

[0081] Optionally, the step of generating a corresponding current charging plan based on the current open-circuit voltage further comprises: The method includes determining a power input source type corresponding to the current open-circuit voltage based on an open-circuit voltage range of the current open-circuit voltage, and generating a corresponding current charging plan based on the power input source type corresponding to the current open-circuit voltage.

[0082] Optionally, the charging control device The power supply further includes an updated open-circuit voltage determination module configured to, when the current open-circuit voltage is not within an open-circuit voltage range under predetermined illumination and temperature conditions for any power input source type, redetect an updated open-circuit voltage of the power input source.

[0083] The charging control device according to the embodiment of the present application can execute the charging control method provided by any embodiment of the present application, and has functional modules and beneficial effects corresponding to the charging control method.

[0084] Example 5

[0085] FIG. 9 is a structural schematic diagram of a solar charge controller 510 that can be used to implement an embodiment of the present application. As shown in FIG. 9, the solar charge controller 510 includes at least one processor 511 and memory, such as a read-only memory (ROM) 512 and a random access memory (RAM) 513, communicatively coupled to the at least one processor 511. The memory stores computer programs that can be executed by the at least one processor. The processor 511 can perform various appropriate operations and processes based on the computer programs stored in the read-only memory (ROM) 512 or loaded from a storage unit 518 into the random access memory (RAM) 513. The RAM 513 can further store various programs and data necessary for the operation of the solar charge controller 510. The processor 511, the ROM 512, and the RAM 513 are connected to each other via a bus 514. An input / output (I / O) interface 515 is also connected to the bus 514.

[0086] Several components in solar charge controller 510 are connected to I / O interface 515, including input unit 516 such as a keyboard or mouse, output unit 517 such as various types of displays and speakers, storage unit 518 such as a magnetic disk or optical disk, and communication unit 519 such as a network card, modem, wireless communication transceiver, etc. Communication unit 519 allows solar charge controller 510 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunications networks.

[0087] The processor 511 may be a general-purpose and / or dedicated processing assembly having processing and computing capabilities. Examples of the processor 511 may include a central processing unit (CPU), a graphic processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors that execute machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. The processor 511 executes the methods and processes described above, for example, the charging control method.

[0088] In some embodiments, the charging control method may be embodied as a computer program and tangibly contained in a computer-readable storage medium, such as storage unit 518. In some embodiments, part or all of the computer program may be loaded and / or installed into solar charge controller 510 via ROM 512 and / or communication unit 519. When the computer program is loaded into RAM 513 and executed by processor 511, it may perform one or more steps of the charging control method described above. Alternatively, in other embodiments, processor 511 is arranged to perform the charging control method in other suitable manners (e.g., via firmware).

[0089] Various embodiments of the systems and techniques described herein above may be realized in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard parts (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These embodiments include the following, embodied in one or more computer programs, which can be executed and / or interpreted by a programmable system including at least one programmable processor, which may be a special-purpose or general-purpose programmable processor, and which can receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0090] Computer programs for implementing the methods of the present application can be programmed using any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, so that when executed by the processor, the computer programs perform the functions / operations shown in the flowcharts and / or block diagrams. The computer programs can be entirely executed on a machine, partially executed on a machine, partially executed on a machine as a separate software package and partially executed on a remote machine, or entirely executed on a remote machine or server.

[0091] In the context of this application, a computer-readable storage medium refers to a tangible medium that can contain or store a computer program for use with or in connection with an instruction execution system, device, or facility. A computer-readable storage medium may include an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or facility, or any suitable combination of the above. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. Examples of machine-readable signal media include an electrical connection based on one or more wires, a portable computer disk, a hard disk drive, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM) or flash memory, optical fiber, a portable compact disc-read-only memory (CD-ROM), an optical storage facility, a magnetic storage facility, or any suitable combination of the above.

[0092] To provide for user interaction, the systems and techniques described herein can be implemented in a solar charge controller that has a display device (e.g., a cathode ray tube (CRT) or liquid crystal display (LCD) or monitor) for displaying information to a user, and a keyboard and pointing device (e.g., a mouse or trackball) through which a user can provide input to the solar charge controller. Other types of devices can also provide for user interaction; for example, the feedback provided to the user can be any form of sensing feedback (e.g., visual feedback, auditory feedback, or tactile feedback) and can receive input from the user in any form (including acoustic, voice, and tactile input).

[0093] The systems and techniques described herein can be implemented in a computing system including a back-end component (e.g., a data server), a computing system including a middleware component (e.g., an application server), a computing system including a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user interacts with embodiments of the systems and techniques described herein), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0094] The computer system may include a client terminal and a server. The client terminal and the server are generally remote from each other and typically interact via a communication network. The relationship between the client terminal and the server is created by a computer program running on a corresponding computer and having a client terminal-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in a cloud computing service system and solves the shortcomings of traditional physical hosts and VPS services, such as difficult management and poor business scalability.

[0095] It should be understood that steps can be rearranged, added, or deleted using the various forms of flow shown above. For example, the steps described herein may be performed in parallel, sequentially, or in a different order, as long as the technical solution of the present application can achieve the desired results.

[0096] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to a Chinese patent with application number 202211365325.0, filed with the China Patent Office on November 3, 2022, the entire contents of which are incorporated herein by reference.

Claims

1. A charge control method, comprising: detecting an initial open-circuit voltage of at least one power input source, and determining an initial charging plan corresponding to each power input source according to the initial open-circuit voltage corresponding to the power input source; After the power input source executes the initial charging plan, detecting input source current information of the power input source, and determining whether to adjust the initial charging plan according to the input source current information; after determining an adjustment to the initial charging plan, detecting a current open-circuit voltage of the power input source, generating a current charging plan corresponding to the current open-circuit voltage based on the current open-circuit voltage, and controlling the power input source to execute the current charging plan.

2. determining an initial charging plan corresponding to each power input source according to an initial open-circuit voltage corresponding to the power input source, determining an open-circuit voltage range of an initial open-circuit voltage corresponding to each power input source based on the open-circuit voltage range of the power input source type under a predetermined illumination temperature condition, and determining a power input source type corresponding to the power input source; and determining an initial charging plan corresponding to the power input source according to the power input source type.

3. the input source current information includes a first charging input current and a second charging input current; determining whether to adjust the initial charging plan according to the input source current information; determining not to adjust the initial charging schedule in response to the first charging input current being greater than an input current threshold; 2. The charging control method of claim 1, further comprising: determining whether to adjust the initial charging schedule according to the second charging input current in response to the first charging input current being less than the input current threshold.

4. determining whether to adjust the initial charging schedule according to the second charging input current; determining to adjust the initial charging schedule in response to the second charging input current being greater than an input current threshold, and controlling the power input source to a no-load state; 4. The charging control method of claim 3, further comprising: determining not to adjust the initial charging schedule in response to the second charging input current being less than the input current threshold.

5. Before determining whether to adjust the initial charging plan according to the second charging input current, the charging control method includes: The charge control method according to claim 3 , further comprising the step of controlling the power input source to execute the initial charging plan within a preset time range.

6. generating a current charging plan corresponding to the current open-circuit voltage based on the current open-circuit voltage, 2. The charge control method according to claim 1, comprising: determining a power input source type corresponding to the present open-circuit voltage based on an open-circuit voltage range of the present open-circuit voltage; and generating a present charging plan corresponding to the present open-circuit voltage according to the power input source type corresponding to the present open-circuit voltage.

7. After detecting the current open circuit voltage of the power input source, the method includes:

7. The charge control method according to claim 6, further comprising the step of re-detecting an updated open-circuit voltage of the power input source in response to the current open-circuit voltage being outside an open-circuit voltage range under predetermined illumination and temperature conditions for any type of power input source.

8. A charge control device, an initial charging plan determination module configured to detect an initial open-circuit voltage of at least one power input source, and determine an initial charging plan corresponding to each power input source according to the initial open-circuit voltage corresponding to the power input source; an initial charging plan adjustment module configured to detect input source current information of the power input source after the power input source executes the initial charging plan, and determine whether to adjust the initial charging plan according to the input source current information; a current charging plan execution module configured to detect a current open-circuit voltage of the power input source after determining an adjustment to the initial charging plan, generate a current charging plan corresponding to the current open-circuit voltage based on the current open-circuit voltage, and control the power input source to execute the current charging plan.

9. 1. A solar charge controller, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; A solar charge controller, wherein the memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor to cause the at least one processor to perform the charge control method described in any one of claims 1 to 7.

10. A computer-readable storage medium having computer instructions stored therein, the computer instructions being used to realize the charging control method according to any one of claims 1 to 7 when executed by a processor.

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