CN110676903B - Control method of separated portable solar system - Google Patents
Control method of separated portable solar system Download PDFInfo
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- CN110676903B CN110676903B CN201910948137.2A CN201910948137A CN110676903B CN 110676903 B CN110676903 B CN 110676903B CN 201910948137 A CN201910948137 A CN 201910948137A CN 110676903 B CN110676903 B CN 110676903B
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- lithium battery
- charging
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- battery pack
- module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a control method of a separated portable solar system, which specifically comprises the following steps: the invention relates to the technical field of solar power generation, in particular to an overall control flow of a system, an overall charging control flow of a system, an overall discharging control flow of a lithium battery pack and an overall discharging control flow of a system, and provides a solar power generation system. The control method of the separated portable solar energy system can realize that the replacement of lithium batteries in the system is extremely convenient, other parts of the system can be reused, the utilization rate of the system is greatly improved, three lithium batteries can be accommodated by the lithium battery pack, and the controller can automatically select the lithium batteries according to the use condition when in use, so that the service lives of the three lithium batteries are kept consistent, the output power of the system is increased by the lithium battery pack, a customer can use a large-capacity system only by paying the cost of the lithium battery pack, and the economic burden of the customer is greatly reduced.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to a control method of a separated portable solar system.
Background
The power development of africa is very different and very unbalanced, and other countries except for some of north africa and south africa have power supply problems, so in recent years, africa has gradually become the biggest global market for solar power generation potential.
At present, the existing portable solar energy systems are integrated, namely, modules such as a single chip Microcomputer (MCU), a charging module, a discharging module, a lithium battery, DC-DC (or DC-AC) conversion, a radio and the like are integrated together and cannot be split, and the integrated portable solar energy systems are mainly divided into three types of 20W, 50W and 80W according to different requirements of users.
Two major problems exist with integrated portable solar energy systems:
1. the lithium battery is not easy to replace. Among the core components of the system, lithium batteries are consumables, which have a service life of only 2 to 4 years, but are costly, accounting for one third or even one half of the total cost of the entire system. After the battery is attenuated, the replacement is very inconvenient, so that other available components of the system cannot be used continuously, and resource waste is caused.
2. The lithium battery is not extensible and the system cannot be upgraded. If the client finds that the purchased system capacity is insufficient and cannot be expanded when in use, only a large-capacity system can be purchased, and the economic burden of the client is heavy.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a control method of a separated portable solar system, which solves the problems that the lithium battery of the existing integrated portable solar system is not easy to replace, and in the core component of the system, the lithium battery is a consumable product, and the service life of the lithium battery is only 2-4 years, but the cost is not very good, and accounts for one third or even one half of the total cost of the whole system. After the battery is attenuated, the replacement is inconvenient, so that other available components of the system cannot be used continuously, resource waste is caused, the lithium battery cannot be expanded, the system cannot be upgraded, and if a customer finds that the purchased system is insufficient in capacity and cannot be expanded when using, the customer only can purchase a large-capacity system at the expense of money, so that the problem of heavy economic burden of the customer is caused.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the control method of the separated portable solar energy system specifically comprises the following steps:
s1, an overall control flow of a system specifically comprises the following steps:
a1, initializing a program, respectively acquiring the voltage condition of each battery through an MCU, selecting a lithium battery after acquisition operation, checking whether the system defaults, if yes, closing the system to externally transmit power, and if no, detecting the remaining time of the system to externally transmit power;
a2, continuously subtracting the using time, and closing the system to externally transmit power when the using time is up;
a3, waiting for whether a password is input or not, if so, enabling the system to transmit power again to the outside, otherwise, returning to the step of checking whether the system defaults or not, and repeating the control flow;
s2, the overall charging control flow of the system specifically comprises the following steps:
b1, firstly detecting whether the voltage of the photovoltaic module meets the charging requirement, if not, re-detecting whether the voltage of the photovoltaic module meets the charging requirement, and if so, starting charging the lithium battery pack by the MCU;
b2, in the charging process, the MCU always detects the current and the voltage of the lithium battery pack, if the current is more than 20A, the charging is closed for 30S, and if the current is less than or equal to 20A, the charging is continued;
b3, if the voltage is more than 12.4V, the charging is closed, and if the voltage is less than or equal to 12.4V, the charging is continued;
s3, the overall discharge control flow of the system specifically comprises the following steps:
c1, firstly checking whether the password of the input system is correct, if not, re-checking whether the password of the input system is correct, if so, starting DC output, and enabling the AC, DC and radio modules at the output end to be effective;
c2, at the same time, the MCU detects whether the output end is overloaded or short-circuited, if 20A < I <25A, the overload is performed, the controller is in overload protection for 2 minutes, and if I >25A, the output end is regarded as short-circuited, and the DC output is closed;
s4, a control flow of the lithium battery pack specifically comprises the following steps:
d1, firstly detecting voltages of three lithium batteries, selecting a first lithium battery, and then timing the working time of the lithium battery;
d2, if the lithium battery is in a discharging mode, judging whether the voltage of the lithium battery is less than 9.5V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d3, if the lithium battery is in the charging mode, judging whether the voltage of the lithium battery is more than 12.4V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d4, if all three lithium batteries are under voltage, namely lower than 9.5V, the output is closed, and if all three lithium batteries are over voltage, namely higher than 12.4V, the input is closed.
Preferably, the separated portable solar energy system is composed of an MCU, a password button, a lithium battery pack, a charging module, a discharging module, a DC-AC conversion module, a DC-DC conversion module and a radio module.
Preferably, the MCU is respectively in bidirectional electrical connection with the charging module, the lithium battery pack and the discharging module through wires, the output end of the password key is in electrical connection with the input end of the MCU through wires, the output end of the charging module is in electrical connection with the input end of the lithium battery pack through wires, and the output end of the lithium battery pack is in electrical connection with the input end of the discharging module through wires.
Preferably, the output end of the discharging module is electrically connected with the input end of the DC-AC conversion and the input end of the DC-DC conversion respectively through wires, and the output end of the DC-DC conversion is electrically connected with the input end of the radio module through wires.
Preferably, in the step a2, the usage time is continuously subtracted in seconds.
Preferably, in step c2, if I >25A, in the short-circuit state, the DC output is turned off until the reset button is pressed to continue outputting.
(III) beneficial effects
The invention provides a control method of a separated portable solar energy system. Compared with the prior art, the method has the following beneficial effects:
(1) The control method of the separated portable solar system specifically comprises the following steps: s1, the overall control flow of the system, S2, the overall charge control flow of the system, S3, the overall discharge control flow of the system and the control flow of the lithium battery pack, the replacement of the lithium battery in the system can be realized, the rest parts of the system can be reused, and the utilization rate of the system is greatly improved.
(2) According to the control method of the separated portable solar system, three lithium batteries can be accommodated by the lithium battery pack, and the controller can automatically select the lithium batteries according to the use condition when in use, so that the service lives of the three lithium batteries are kept consistent.
(3) The control method of the separated portable solar system increases the output power of the system through the lithium battery pack, and a customer can use a large-capacity system only by paying the cost of the lithium battery pack, so that the economic burden of the customer is greatly reduced.
Drawings
FIG. 1 is a control flow diagram of the present invention;
FIG. 2 is a control flow diagram of a charging module according to the present invention;
FIG. 3 is a control flow chart of the discharge module of the present invention;
fig. 4 is a control flow chart of the lithium battery pack of the present invention;
FIG. 5 is a diagram showing the structural relationship of the control system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the embodiment of the present invention provides a technical solution: the control method of the separated portable solar energy system specifically comprises the following steps:
s1, the overall control flow of the system, as shown in FIG. 1, specifically comprises the following steps:
a1, initializing a program, respectively acquiring the voltage condition of each battery through an MCU, selecting a lithium battery after acquisition operation, checking whether the system defaults, if yes, closing the system to externally transmit power, and if no, detecting the remaining time of the system to externally transmit power;
a2, continuously subtracting the using time by taking seconds as a unit, and closing the system to externally transmit power when the using time is up;
a3, waiting for whether a password is input or not, if so, enabling the system to transmit power again to the outside, otherwise, returning to the step of checking whether the system defaults or not, and repeating the control flow;
s2, the overall charging control flow of the system, as shown in FIG. 2, specifically comprises the following steps:
b1, firstly detecting whether the voltage of the photovoltaic module meets the charging requirement, if not, re-detecting whether the voltage of the photovoltaic module meets the charging requirement, and if so, starting charging the lithium battery pack by the MCU;
b2, in the charging process, the MCU always detects the current and the voltage of the lithium battery pack, if the current is more than 20A, the charging is closed for 30S, and if the current is less than or equal to 20A, the charging is continued;
b3, if the voltage is more than 12.4V, the charging is closed, and if the voltage is less than or equal to 12.4V, the charging is continued;
s3, the overall discharge control flow of the system is shown in FIG. 3, and specifically comprises the following steps:
c1, firstly checking whether the password of the input system is correct, if not, re-checking whether the password of the input system is correct, if so, starting DC output, and enabling the AC, DC and radio modules at the output end to be effective;
c2, at the same time, the MCU detects whether the output end is overloaded or short-circuited, if 20A < I <25A, the overload is carried out, the controller is overloaded and protected for 2 minutes, if I >25A, the DC output is regarded as short-circuited, if I >25A, the DC output is closed when the MCU is in a short-circuited state, and the MCU can continue to output until a reset button is pressed;
s4, a control flow of the lithium battery pack is shown in FIG. 4, and specifically comprises the following steps:
d1, firstly detecting voltages of three lithium batteries, selecting a first lithium battery, and then timing the working time of the lithium battery;
d2, if the lithium battery is in a discharging mode, judging whether the voltage of the lithium battery is less than 9.5V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d3, if the lithium battery is in the charging mode, judging whether the voltage of the lithium battery is more than 12.4V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d4, if all three lithium batteries are under voltage, namely lower than 9.5V, the output is closed, and if all three lithium batteries are over voltage, namely higher than 12.4V, the input is closed.
As shown in fig. 5, in the present invention, the split portable solar energy system is composed of an MCU, a password button, a lithium battery pack, a charging module, a discharging module, a DC-AC conversion, a DC-DC conversion and a radio module, wherein the MCU is electrically connected with the charging module, the lithium battery pack and the discharging module respectively through wires, the output end of the password button is electrically connected with the input end of the MCU through wires, the output end of the charging module is electrically connected with the input end of the lithium battery pack through wires, the output end of the lithium battery pack is electrically connected with the input end of the discharging module through wires, the output end of the discharging module is electrically connected with the input ends of the DC-AC conversion and the DC-DC conversion respectively through wires, and the output end of the DC-DC conversion is electrically connected with the input end of the radio module through wires.
To sum up
The invention can realize that the replacement of the lithium batteries in the system is extremely convenient, the other parts of the system can be reused, the utilization rate of the system is greatly improved, three lithium batteries can be accommodated by the lithium battery pack, and the controller can automatically select the lithium batteries according to the use condition when in use, so that the service lives of the three lithium batteries are kept consistent, the output power of the system is increased by the lithium battery pack, a customer can use a high-capacity system only by paying the cost of the lithium battery pack, and the economic burden of the customer is greatly reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A control method of a separated portable solar energy system is characterized in that: the method specifically comprises the following steps:
s1, an overall control flow of a system specifically comprises the following steps:
a1, initializing a program, respectively acquiring the voltage condition of each battery through an MCU, selecting a lithium battery after acquisition operation, checking whether the system defaults, if yes, closing the system to externally transmit power, and if no, detecting the remaining time of the system to externally transmit power;
a2, continuously subtracting the using time, and closing the system to externally transmit power when the using time is up;
a3, waiting for whether a password is input or not, if so, enabling the system to transmit power again to the outside, otherwise, returning to the step of checking whether the system defaults or not, and repeating the control flow;
s2, the overall charging control flow of the system specifically comprises the following steps:
b1, firstly detecting whether the voltage of the photovoltaic module meets the charging requirement, if not, re-detecting whether the voltage of the photovoltaic module meets the charging requirement, and if so, starting charging the lithium battery pack by the MCU;
b2, in the charging process, the MCU always detects the current and the voltage of the lithium battery pack, if the current is more than 20A, the charging is closed for 30S, and if the current is less than or equal to 20A, the charging is continued;
b3, if the voltage is more than 12.4V, the charging is closed, and if the voltage is less than or equal to 12.4V, the charging is continued;
s3, the overall discharge control flow of the system specifically comprises the following steps:
c1, firstly checking whether the password of the input system is correct, if not, re-checking whether the password of the input system is correct, if so, starting DC output, and enabling the AC, DC and radio modules at the output end to be effective;
c2, at the same time, the MCU detects whether the output end is overloaded or short-circuited, if 20A < I <25A, the overload is performed, the controller is in overload protection for 2 minutes, and if I >25A, the output end is regarded as short-circuited, and the DC output is closed;
s4, a control flow of the lithium battery pack specifically comprises the following steps:
d1, firstly detecting voltages of three lithium batteries, selecting a first lithium battery, and then timing the working time of the lithium battery;
d2, if the lithium battery is in a discharging mode, judging whether the voltage of the lithium battery is less than 9.5V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d3, if the lithium battery is in the charging mode, judging whether the voltage of the lithium battery is more than 12.4V, detecting whether the working time of the lithium battery is more than 12 hours, and if the voltage and the working time of the lithium battery meet one of the voltages, replacing the lithium battery with the next serial number;
d4, if all three lithium batteries are under voltage, namely lower than 9.5V, closing output, and if all three lithium batteries are over voltage, namely higher than 12.4V, closing input;
the separated portable solar energy system is composed of an MCU, a password button, a lithium battery pack, a charging module, a discharging module, a DC-AC conversion module, a DC-DC conversion module and a radio module;
the MCU is respectively and electrically connected with the charging module, the lithium battery pack and the discharging module in a bidirectional manner through a wire, the output end of the password key is electrically connected with the input end of the MCU through a wire, the output end of the charging module is electrically connected with the input end of the lithium battery pack through a wire, and the output end of the lithium battery pack is electrically connected with the input end of the discharging module through a wire;
the output end of the discharging module is electrically connected with the input end of the DC-AC conversion and the input end of the DC-DC conversion respectively through wires, and the output end of the DC-DC conversion is electrically connected with the input end of the radio module through wires;
in the step a2, the using time is continuously subtracted in the unit of seconds;
if I >25A in step c2, when in a short circuit state, the DC output is turned off until the reset button is pressed to continue outputting.
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| CN201910948137.2A CN110676903B (en) | 2019-10-08 | 2019-10-08 | Control method of separated portable solar system |
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| CN201910948137.2A CN110676903B (en) | 2019-10-08 | 2019-10-08 | Control method of separated portable solar system |
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