Charging control method, device and system and readable storage medium

Abstract

The invention discloses a charging control method, device and system and a readable storage medium. The charging control method comprises the steps of obtaining a current standard charging current value of a battery pack and an initial set value of charging current of a photovoltaic module; acquiring an actual charging current value of the photovoltaic module; under the condition that the difference between the actual charging current value and the initial set value is smaller than or equal to a preset value, the initial set value is updated to be a first updated set value, and the first updated set value is equal to the sum of the initial set value and a step-up current value; under the condition that the difference between the actual charging current value and the initial set value is larger than a preset value, the initial set value is updated to be a second updated set value, and the second updated set value is equal to the sum of the actual charging current value and the step-up current value. According to the charging control method, the charging control device and the charging control system, large current impact is avoided, damage to the battery is avoided, and the service life of the battery pack is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage power supply, and more specifically, to a charging control method, device, system and readable storage medium. Background Art

[0002] With the development of new energy technology, it is now very common for battery packs to use a hybrid charging method that uses both photovoltaic and mains charging. In order to improve the utilization rate of new energy, photovoltaic charging is generally preferred, and the mains supplements the charging current of the battery pack. However, the charging current of photovoltaic charging is easily affected by light intensity. When the light intensity suddenly changes from weak to strong, the charging current of photovoltaic charging will rise rapidly, and the charging current of the mains often cannot be adjusted in time, which will cause the charging current of the battery pack to be much greater than the requested current, or even greater than the maximum charging current allowed by the battery pack, causing overcharging, causing current shock to the battery pack, damaging the battery pack, and shortening the service life of the battery pack. Summary of the invention

[0003] The embodiments of the present application provide a charging control method, device, system and readable storage medium to solve at least one of the above-mentioned technical problems.

[0004] The charging control method of the embodiment of the present application is used to control a charging loop, wherein the charging loop includes a battery pack and a photovoltaic assembly and an inverter for charging the battery pack. The charging control method includes:

[0005] Obtaining a current standard charging current value of the battery pack and an initial setting value of the charging current of the photovoltaic module;

[0006] Obtaining an actual charging current value of the photovoltaic module;

[0007] When the difference between the actual charging current value and the initial setting value is less than a predetermined value, updating the initial setting value to a first updated setting value, wherein the first updated setting value is equal to the initial setting value plus a step-increase current value;

[0008] When the difference between the actual charging current value and the initial setting value is greater than or equal to the predetermined value, the initial setting value is updated to a second updated setting value, which is equal to the actual charging current value plus one of the step-increase current values.

[0009] The charging control method proposed in the present application makes the updated setting value close to the actual charging current value when the actual charging current value decreases, and makes the updated setting value gradually increase when the actual charging current value increases. Therefore, even if the light suddenly becomes strong, the actual charging current value will keep rising steadily without large changes, thereby avoiding overcharging of the battery. At the same time, no large current shock will occur, thus avoiding damage to the battery and helping to ensure the service life of the battery pack.

[0010] In some embodiments, the step of obtaining the current standard charging current value of the battery pack and the initial setting value of the charging current of the photovoltaic module includes:

[0011] The standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack.

[0012] In this way, the standard charging current value is obtained by using the charging curve, current temperature value and voltage value, which is helpful to ensure charging efficiency and product performance.

[0013] In some embodiments, the predetermined value is 0.2A.

[0014] In this way, the current difference within 0.2A will not have a significant impact on the performance of the system, which is conducive to simplifying the design.

[0015] In some embodiments, the step-increase current value is less than or equal to the maximum sudden change value of the charging current that the battery pack can withstand.

[0016] In this way, the actual photovoltaic charging current can be steadily increased without affecting the performance of the battery pack, which is beneficial to ensuring the service life of the battery pack.

[0017] In some embodiments, the control method further comprises:

[0018] In a case where the first updated setting value is greater than the standard charging current value, updating the first updated setting value to a third updated setting value, wherein the third updated setting value is equal to the standard charging current value; and

[0019] In a case where the second updated setting value is greater than the standard charging current value, the second updated setting value is updated to a fourth updated setting value, and the fourth updated setting value is equal to the standard charging current value.

[0020] In this way, it is possible to avoid setting the charging current too large, causing the total charging current to be greater than the standard charging current value and resulting in overcharging.

[0021] In some embodiments, the control method further comprises:

[0022] A set value of the charging current of the inverter is calculated, where the set value is the difference between the standard charging current value and the actual charging current value.

[0023] In this way, the inverter can replenish the charging current in time to ensure the charging efficiency of the battery pack.

[0024] In some embodiments, the control method further comprises:

[0025] After determining the preset time of the set value, the standard charging current value and the initial setting value are reacquired, the standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack, and the initial setting value is the first updated setting value, the second updated setting value, the third updated setting value or the fourth updated setting value.

[0026] In this way, the initial setting value can be steadily increased to avoid a sudden increase in the total charging current, which would cause a current shock.

[0027] In some embodiments, the preset time is a response time of the charging loop.

[0028] In this way, it can be ensured that the system can fully respond and complete the corresponding actions, avoiding the system not being able to respond in time and causing excessive current to affect the battery pack.

[0029] A charging control device according to a second embodiment of the present application is used to control a charging loop, wherein the charging loop includes a battery pack and a photovoltaic assembly and an inverter for charging the battery pack. The charging control device includes:

[0030] A first acquisition module is used to acquire a current standard charging current value of the battery pack and an initial setting value of the charging current of the photovoltaic module;

[0031] A second acquisition module is used to acquire an actual charging current value of the photovoltaic component;

[0032] A first calculation module, configured to update the initial setting value to a first updated setting value when the difference between the actual charging current value and the initial setting value is less than a predetermined value, wherein the first updated setting value is equal to the initial setting value plus a step-increase current value;

[0033] The second calculation module is used to update the initial setting value to a second updated setting value when the difference between the actual charging current value and the initial setting value is greater than or equal to the predetermined value, and the second updated setting value is equal to the actual charging current value plus one of the step-increase current values.

[0034] A charging control system according to a third embodiment of the present application includes a processor and a memory, wherein the memory stores a computer program. When the computer program is executed by the processor, the processor implements the instructions of the charging control method as described in any one of the above items.

[0035] A non-volatile computer-readable storage medium in a fourth embodiment of the present application stores a computer program. When the computer program is executed by a processor, the charging control method as described in any one of the above items is implemented.

[0036] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is a flow chart of a charging control method according to an embodiment of the present application;

[0039] Figure 2 is a module schematic diagram of a charging control device according to an embodiment of the present application;

[0040] Figure 3 It is a module schematic diagram of a charging control system according to an embodiment of the present application;

[0041] Figure 4 is a schematic diagram of a module for controlling a charging loop in an embodiment of the present application;

[0042] Figure 5 is a flow chart of a charging control method of certain embodiments of the present application;

[0043] Figure 6 is a flow chart of a charging control method of certain embodiments of the present application;

[0044] Figure 7 is a flow chart of a charging control method of certain embodiments of the present application;

[0045] Figure 8 It is a flowchart of a charging control method of certain embodiments of the present application.

[0046] Description of main component symbols: charging control system 100, charging control device 10, first acquisition module 11, second acquisition module 12, first calculation module 13, second calculation module 14, processor 20, memory 30, charging loop 40, battery pack 41, photovoltaic module 42, inverter 43, main control board 44. DETAILED DESCRIPTION

[0047] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. The same or similar reference numerals in the accompanying drawings represent the same or similar elements or elements with the same or similar functions.

[0048] In addition, the embodiments of the present application described below in conjunction with the drawings are exemplary and are only used to explain the embodiments of the present application and should not be construed as limiting the present application.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] See also Figure 1 The charging control method of the embodiment of the present application is used to control a charging loop 40, wherein the charging loop 40 includes a battery pack 41 and a photovoltaic assembly 42 and an inverter 43 for charging the battery pack 41. The charging control method includes:

[0051] Step 01: Obtain the current standard charging current value of the battery pack and the initial setting value of the charging current of the photovoltaic module;

[0052] Step 02: Obtain the actual charging current value of the photovoltaic module;

[0053] Step 03: When the difference between the actual charging current value and the initial setting value is less than a predetermined value, the initial setting value is updated to a first updated setting value, and the first updated setting value is equal to the initial setting value plus a step-increase current value;

[0054] Step 04: When the difference between the actual charging current value and the initial setting value is greater than or equal to a predetermined value, the initial setting value is updated to a second updated setting value, and the second updated setting value is equal to the actual charging current value plus a step-increase current value.

[0055] See also Figure 2The charging control device 10 of the second embodiment of the present application is used to control a charging loop 40, wherein the charging loop 40 includes a battery pack 41 and a photovoltaic component 42 and an inverter 43 for charging the battery pack 41. The charging control device 10 includes a first acquisition module 11, a second acquisition module 12, a first calculation module 13 and a second calculation module 14, wherein the first acquisition module 11 is used to acquire the current standard charging current value of the battery pack 41 and the initial setting value of the charging current of the photovoltaic component 42, the second acquisition module 12 is used to acquire the actual charging current value of the photovoltaic component 42, the first calculation module 13 is used to update the initial setting value to a first updated setting value when the difference between the actual charging current value and the initial setting value is less than a predetermined value, and the first updated setting value is equal to the initial setting value plus a step-increase current value, and the second calculation module 14 is used to update the initial setting value to a second updated setting value when the difference between the actual charging current value and the initial setting value is greater than or equal to a predetermined value, and the second updated setting value is equal to the actual charging current value plus a step-increase current value.

[0056] See also Figure 3 The charging control system 100 of the third embodiment of the present application includes a processor 20 and a memory 30. The memory 30 stores a computer program. When the computer program is executed by the processor 20, the processor 20 implements the instructions of any of the charging control methods described above. In other words, the processor 20 can be used to obtain the current standard charging current value of the battery pack 41 and the initial setting value of the charging current of the photovoltaic component 42; obtain the actual charging current value of the photovoltaic component 42; when the difference between the actual charging current value and the initial setting value is less than a predetermined value, update the initial setting value to a first updated setting value, the first updated setting value is equal to the initial setting value plus a step-increase current value; when the difference between the actual charging current value and the initial setting value is greater than or equal to a predetermined value, update the initial setting value to a second updated setting value, the second updated setting value is equal to the actual charging current value plus a step-increase current value.

[0057] The charging control method, device and system proposed in the present application make the updated setting value close to the actual charging current value when the actual charging current value decreases, and make the updated setting value gradually increase when the actual charging current value increases. Therefore, even if the light suddenly becomes strong, the actual charging current value will keep rising steadily without large changes, thereby avoiding overcharging of the battery. At the same time, no large current shock will occur, thus avoiding damage to the battery, which is beneficial to ensuring the service life of the battery pack 41.

[0058] For details, please refer to Figure 4 In the embodiment of the present application, the charging control system 100 includes a main control board 44 , which is electrically connected to the photovoltaic component 42 and the inverter 43 and controls the photovoltaic component 42 and the inverter 43 to charge the battery pack 41 .

[0059] In the embodiment of the present application, when the photovoltaic component 42 is charging, there is a setting value of the charging current, which is used to limit the charging current of the photovoltaic component 42 so that the maximum charging current of the photovoltaic component 42 cannot exceed the setting value when the charging current of the photovoltaic component 42 changes with the light intensity.

[0060] In the embodiment of the present application, after obtaining the current standard charging current value Imax, a step-increase current value Istep is first given to the photovoltaic component 42 as the initial setting value Ipv_set, that is, Ipv_set = Istep. It is determined whether the current actual charging current value Ipv_now of the photovoltaic component 42 is close to the initial setting value, that is, whether the difference between the actual charging current value and the initial setting value is less than or equal to the predetermined value. If it is close, it means that the current light intensity meets the initial setting value, and the initial setting value is updated to the first updated setting value, which is equal to the initial setting value plus a step-increase current value, that is, Ipv_set = Ipv_set + Istep.

[0061] On the contrary, if the current actual charging current value of the photovoltaic component 42 cannot be close to the initial setting value, that is, when the difference between the actual charging current value and the initial setting value is greater than the predetermined value, the initial setting value is updated to the second updated setting value, and the second updated setting value is equal to the actual charging current value plus a step-increase current value, that is, the actual charging current value of the photovoltaic component 42 is added with a step-increase current value, that is, Ipv_set=Ipv_now+Istep, as the initial setting value of the photovoltaic component 42 this time.

[0062] It is easy to understand that, because the actual charging current value of the photovoltaic component 42 cannot be close to the set current, it may be that the light intensity is not strong enough, or the light intensity may be attenuated. If it is the latter, the actual charging current value of the photovoltaic component 42 is very different from the initial setting value. The inverter 43 will make up for the required charging current of the system. If the larger setting value is still maintained, once the light is suddenly restored, the actual charging current value of the photovoltaic component 42 will increase rapidly, and the inverter 43 will not have time to adjust. The charging current value of the inverter 43 will be superimposed, which will make the charging current of the battery much greater than the standard charging current, resulting in a large current shock. Therefore, in order to avoid this situation, when the current actual charging current value of the photovoltaic component 42 cannot be close to the initial setting value, the initial setting value is updated to the actual charging current value plus a step-increase current value as the new setting value of the photovoltaic component 42. In this way, even if the light suddenly becomes stronger, the maximum current output by the photovoltaic component 42 will not exceed the new setting value. Even if the current of the inverter 43 is superimposed, the total charging current of the battery will not differ from the standard charging current by more than a step-increase current value, and a large current shock will not occur. At the same time, it can also ensure that the final charging capacity of the battery reaches the nominal capacity, and there will be no overcharging problem.

[0063] See also Figure 5 In some embodiments, step 01 includes:

[0064] 011: Determine the standard charging current value based on the charging curve, current temperature and voltage value of the battery pack.

[0065] In this way, the standard charging current value is obtained by using the charging curve, current temperature value and voltage value, which is conducive to ensuring charging efficiency and product performance.

[0066] In some embodiments, sub-step 011 may be implemented by the first acquisition module 11 , or in other words, the first acquisition module 11 may be used to determine the standard charging current value according to the charging curve, current temperature value, and voltage value of the battery pack 41 .

[0067] In some embodiments, the processor 20 may be configured to determine a standard charging current value based on a charging curve, a current temperature value, and a voltage value of the battery pack 41 .

[0068] Specifically, the charging curve of the battery pack 41 describes the relationship between the voltage, current and other parameters of the battery pack 41 during the charging process and the time or charging stage. The life of the battery pack 41 is closely related to its charging and discharging process. Excessive charging current will accelerate the consumption of chemical substances inside the battery and the wear of electrode materials, thereby shortening the life of the battery pack 41. The standard charging current value determined according to the charging curve can avoid damage to the battery pack 41 caused by excessive current, thereby extending the life of the battery pack 41.

[0069] In some embodiments, the predetermined value is 0.2A.

[0070] In this way, the current difference within 0.2A will not have a significant impact on the performance of the system, which is conducive to simplifying the design.

[0071] Specifically, by determining whether the difference between the actual charging current value and the initial setting value is less than a predetermined value, it is determined whether the actual charging current value of the photovoltaic module 42 is close to the initial setting value. In the embodiment of the present application, the predetermined value is 0.2A, and the current difference within 0.2A will not have a significant impact on the performance of the system. Such a setting helps to simplify the design and selection of current sources, loads and other related components, so that designers can more flexibly select components that meet the requirements without having to pay too much attention to small current differences.

[0072] In some embodiments, the step-increase current value is less than or equal to the maximum sudden change value of the charging current that the battery pack 41 can withstand.

[0073] In this way, the actual photovoltaic charging current can be steadily increased without affecting the performance of the battery pack 41 , which is beneficial to ensuring the service life of the battery pack 41 .

[0074] Specifically, in the embodiment of the present application, the step-increase current value needs to take into account the difference in the battery pack 41 that is allowed to exceed the standard charging current in a short period of time, and the step-increase current value cannot be greater than the difference, otherwise when the battery voltage reaches the protection voltage, the battery power will not reach the nominal power of the product. This difference can be taken as the step-increase current. The short time refers to the time from the start of charging to the current stabilization, which is generally not more than 60 seconds.

[0075] See also Figure 6 In some embodiments, the control method further comprises:

[0076] Step 05: When the first updated setting value is greater than the standard charging current value, updating the first updated setting value to a third updated setting value, wherein the third updated setting value is equal to the standard charging current value; and

[0077] In a case where the second updated setting value is greater than the standard charging current value, the second updated setting value is updated to a fourth updated setting value, and the fourth updated setting value is equal to the standard charging current value.

[0078] In this way, it is possible to avoid setting the charging current too large, causing the total charging current to be greater than the standard charging current value and resulting in overcharging.

[0079] In some embodiments, step 05 can be implemented by the second calculation module 14, or the second calculation module 14 can be used to update the first updated setting value to a third updated setting value when the first updated setting value is greater than the standard charging current value, and the third updated setting value is equal to the standard charging current value; and to update the second updated setting value to a fourth updated setting value when the second updated setting value is greater than the standard charging current value, and the fourth updated setting value is equal to the standard charging current value.

[0080] In some embodiments, the processor 20 can be used to update the first updated setting value to a third updated setting value equal to the standard charging current value when the first updated setting value is greater than the standard charging current value; and to update the second updated setting value to a fourth updated setting value equal to the standard charging current value when the second updated setting value is greater than the standard charging current value.

[0081] Specifically, in the embodiment of the present application, the setting value of the charging current of the updated photovoltaic component 42 should not exceed the standard charging current value, that is, when the setting value is greater than the standard charging current value, Ipv_set=Imax, and when the setting value is less than or equal to the standard charging current value, the setting value remains unchanged.

[0082] See also Figure 7 In some embodiments, the control method further comprises:

[0083] Step 06: Calculate the setting value of the inverter's charging current. The setting value is the difference between the standard charging current value and the actual charging current value.

[0084] In this way, the inverter 43 can replenish the charging current in time to ensure the charging efficiency of the battery pack 41.

[0085] In some embodiments, step 06 may be implemented by the second calculation module 14, or the second calculation module 14 may be used to calculate a set value of the charging current of the inverter 43, where the set value is the difference between the standard charging current value and the actual charging current value.

[0086] In some embodiments, the processor 20 may be used to calculate a set value of the charging current of the inverter 43 , where the set value is the difference between a standard charging current value and an actual charging current value.

[0087] Specifically, in the embodiment of the present application, the setting value of the charging current of the inverter 43 is always equal to the difference between the actual charging current value Ipv_now actually output by the current photovoltaic component 42 and the standard charging current Imax, that is, Iinv_set=Imax-Ipv_now.

[0088] See also Figure 8In some embodiments, the control method further comprises:

[0089] Step 07: After determining the preset time of the set value, re-obtain the standard charging current value and the initial setting value. The standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack. The initial setting value is the first updated setting value, the second updated setting value, the third updated setting value or the fourth updated setting value.

[0090] In this way, the initial setting value can be steadily increased to avoid a sudden increase in the total charging current, which would cause a current surge.

[0091] In some embodiments, step 07 can be implemented by the first acquisition module 11, or the first acquisition module 11 can be used to re-acquire the standard charging current value and the initial setting value after determining the preset time of the setting value, the standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack 41, and the initial setting value is the first updated setting value, the second updated setting value, the third updated setting value or the fourth updated setting value.

[0092] In some embodiments, the processor 20 can be used to reacquire a standard charging current value and an initial setting value after determining a preset time of the setting value, the standard charging current value is determined based on a charging curve, a current temperature value and a voltage value of the battery pack 41, and the initial setting value is a first updated setting value, a second updated setting value, a third updated setting value or a fourth updated setting value.

[0093] Specifically, in an embodiment of the present application, after determining the preset time of the set value, the above steps are repeated and cycled until an end instruction is received. The end instruction can be a manually input disconnection instruction or an instruction to detect that the battery pack 41 is fully charged. Among them, the set value of the charging current of the photovoltaic component 42 updated in the previous round is selected as the initial setting value of this round.

[0094] In some embodiments, the predetermined time is the response time of the charging loop 40 .

[0095] In this way, it can be ensured that the system can fully respond and complete the corresponding actions, avoiding the system not being able to respond in time and causing excessive current to affect the battery pack 41.

[0096] Specifically, in the embodiment of the present application, the response time of the inverter 43 is the maximum time from the main control board 44 sending a command to change the charging current to the inverter 43 to the inverter 43 adjusting to the target current. The smaller the time, the faster the current switching and the better the performance. Similarly, the response time of the photovoltaic module 42 is the maximum time from the main control board 44 sending a command to change the charging current to the photovoltaic module 42 adjusting to the target current. The larger of the two is taken as the response time of the charging loop 40 of the system. The time period for the main control to send a current adjustment command must be greater than the response time of the system charging loop 40. At present, the response time of the inverter 43 is generally less than 300ms, while the photovoltaic module 42 is larger, generally 2 to 3s. Here, the response time of the charging loop 40 can be selected as 3s.

[0097] The embodiment of the present application further proposes a non-volatile computer-readable storage medium, which stores a computer program. When the computer program is executed by the processor 20, the charging control method as described above is implemented.

[0098] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0099] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0101] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A charging control method for controlling a charging loop, wherein the charging loop comprises a battery pack and a photovoltaic module and an inverter for charging the battery pack, wherein: The charging control method comprises: Obtaining a current standard charging current value of the battery pack and an initial setting value of the charging current of the photovoltaic module; Obtaining an actual charging current value of the photovoltaic module; When the difference between the actual charging current value and the initial setting value is less than a predetermined value, updating the initial setting value to a first updated setting value, wherein the first updated setting value is equal to the initial setting value plus a step-increase current value; When the difference between the actual charging current value and the initial setting value is greater than or equal to the predetermined value, the initial setting value is updated to a second updated setting value, which is equal to the actual charging current value plus one of the step-increase current values.

2. The charging control method according to claim 1, characterized in that: The step of obtaining the current standard charging current value of the battery pack and the initial setting value of the charging current of the photovoltaic module comprises: The standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack.

3. The charging control method according to claim 1, characterized in that: The predetermined value is 0.2A.

4. The charging control method according to claim 1, characterized in that: The step-increase current value is less than or equal to the maximum sudden change value of the charging current that the battery pack can withstand.

5. The charging control method according to claim 1, characterized in that: The control method further comprises: In a case where the first updated setting value is greater than the standard charging current value, updating the first updated setting value to a third updated setting value, wherein the third updated setting value is equal to the standard charging current value; and In a case where the second updated setting value is greater than the standard charging current value, the second updated setting value is updated to a fourth updated setting value, and the fourth updated setting value is equal to the standard charging current value.

6. The charging control method according to claim 5, characterized in that: The control method further comprises: A set value of the charging current of the inverter is calculated, where the set value is the difference between the standard charging current value and the actual charging current value.

7. The charging control method according to claim 6, characterized in that: The control method further comprises: After determining the preset time of the set value, the standard charging current value and the initial setting value are reacquired, the standard charging current value is determined according to the charging curve, current temperature value and voltage value of the battery pack, and the initial setting value is the first updated setting value, the second updated setting value, the third updated setting value or the fourth updated setting value.

8. The charging control method according to claim 7, characterized in that: The preset time is the response time of the charging loop.

9. A charging control device for controlling a charging loop, the charging loop comprising a battery pack and a photovoltaic module and an inverter for charging the battery pack, characterized in that: The charging control device comprises: A first acquisition module is used to acquire a current standard charging current value of the battery pack and an initial setting value of the charging current of the photovoltaic module; A second acquisition module is used to acquire an actual charging current value of the photovoltaic component; A first calculation module, configured to update the initial setting value to a first updated setting value when the difference between the actual charging current value and the initial setting value is less than or equal to a predetermined value, wherein the first updated setting value is equal to the initial setting value plus a step-increase current value; The second calculation module is used to update the initial setting value to a second updated setting value when the difference between the actual charging current value and the initial setting value is greater than the predetermined value, and the second updated setting value is equal to the actual charging current value plus one of the step-increase current values.

10. A charging control system, characterized in that: The method comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements the instructions of the charging control method according to any one of claims 1 to 8.

11. A non-volatile computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the charging control method according to any one of claims 1 to 8 is implemented.

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