CN110707799A - Low-power solar equalizing charging system - Google Patents
Low-power solar equalizing charging system Download PDFInfo
- Publication number
- CN110707799A CN110707799A CN201911026568.XA CN201911026568A CN110707799A CN 110707799 A CN110707799 A CN 110707799A CN 201911026568 A CN201911026568 A CN 201911026568A CN 110707799 A CN110707799 A CN 110707799A
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- storage battery
- electric
- photovoltaic panel
- control module
- equalizing
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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
- H02J7/34—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
-
- 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
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a low-power solar equalizing charging system, which comprises: the control module is connected with the current balancing device and the two storage batteries; the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels and two electric control rheostats; the two photovoltaic panels are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery; when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries, improve the utilization rate of electric energy and prolong the service life of the storage battery.
Description
Technical Field
The invention belongs to the field of photovoltaics, and particularly relates to a low-power solar equalizing charging system.
Background
Solar energy is more and more extensive in the application in life, utilizes solar energy to can effectual utilization solar energy to battery charging, but traditional solar energy power generation's electric current is too big, and the efficiency is lower to battery charging alone to great charging current can damage the battery, reduces the life of battery.
Based on the above technical problem, a new low-power solar equalizing charging system needs to be designed.
Disclosure of Invention
The invention aims to provide a low-power solar equalizing charging system.
In order to solve the above technical problem, the present invention provides a low-power solar equalizing charging system, including:
the control module is connected with the current balancing device and the two storage batteries;
the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels and two electric control rheostats;
the two photovoltaic panels are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery;
the photovoltaic panel is adapted to convert sunlight into electrical current;
the electric quantity detection module is suitable for respectively detecting the electric quantities of the two storage batteries;
the control module is adapted to control the current equalizing device to charge the two batteries in an equalizing manner, i.e.
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries.
Furthermore, the sides of the two photovoltaic panels are connected and form an included angle, namely the two photovoltaic panels form a V shape, and sunlight irradiates the photovoltaic panels through the V-shaped opening;
the reflected light of one photovoltaic panel is irradiated to the other photovoltaic panel.
Further, the low-power solar energy equalizing charge system further comprises: a tilting device controlled by the control module;
the control module is suitable for controlling the tilting device to adjust the tilting angle of the photovoltaic panel so as to adjust the incident angle of sunlight irradiating on the photovoltaic panel.
Further, the tilting device includes: two push rod motors and two tilt sensors;
each photovoltaic panel corresponds to each push rod motor one by one;
each photovoltaic panel corresponds to each inclination angle sensor one by one;
the inclination angle sensor is arranged on a backlight surface of the photovoltaic panel;
the telescopic end of the push rod motor is connected with the backlight surface of the photovoltaic panel;
the inclination angle sensor is suitable for detecting the inclination angle of the corresponding photovoltaic panel;
the control module is suitable for controlling the push rod motor to stretch and adjust the inclination angle of the photovoltaic panel to reach a preset inclination angle according to a preset solar altitude angle so as to adjust the incident angle of sunlight irradiating the photovoltaic panel.
Further, the low-power solar energy equalizing charge system further comprises: the control module is electrically connected with the two illumination sensors and is used for controlling the rotation device;
each illumination sensor corresponds to each photovoltaic panel one by one;
the illumination sensor is arranged on the light receiving surface of the corresponding photovoltaic panel and is suitable for detecting the illumination intensity of the light receiving surface of the corresponding photovoltaic panel;
when the illumination intensity detected by any one of the illumination sensors is lower than the preset illumination intensity, the control module is suitable for controlling the rotating device to rotate to drive the tilting device to rotate, so that the illumination intensity of the light receiving surface of each photovoltaic panel reaches the preset illumination intensity.
Further, the rotating device includes: a bearing table and a motor;
the push rod motor is arranged on the bearing table;
the motor is arranged at the bottom of the bearing table;
the control module is suitable for controlling the motor to rotate to drive the bearing table to rotate.
Further, the control module is adapted to control the battery to power the tilting device, the rotating device and the illumination sensors.
The invention has the beneficial effects that the invention has the advantages that the current balancing device and the two storage batteries are connected with the control module through the control module; the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels and two electric control rheostats; the two photovoltaic panels are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery; the photovoltaic panel is adapted to convert sunlight into electrical current; the electric quantity detection module is suitable for respectively detecting the electric quantities of the two storage batteries; the control module is suitable for controlling the current balancing device to charge the two storage batteries in a balanced manner, namely when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries, improve the utilization rate of electric energy and prolong the service life of the storage battery.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a circuit diagram of a current equalizing device and two secondary batteries according to the present invention;
FIG. 2 is a functional block diagram of a low power solar equalizing charge system in accordance with the present invention;
fig. 3 is a schematic structural diagram of a low-power solar equalizing charging system according to the present invention.
In the figure:
1 is a photovoltaic panel;
2, a tilting device, 21 a push rod motor and 22 a tilt angle sensor;
3 is an illumination sensor;
4 is a rotating device, 41 is a bearing platform, and 42 is a motor.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 1 is a circuit diagram of a current equalizing device and two secondary batteries according to the present invention;
fig. 2 is a schematic block diagram of a low-power solar equalizing charging system according to the present invention.
As shown in fig. 1 and fig. 2, the present embodiment 1 provides a low-power solar equalizing charging system, including: the control module is connected with the current balancing device and the two storage batteries; the control module can adopt but not limited to STM32 series single-chip microcomputer; the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels 1 and two electric control rheostats; the charge detection module may employ, but is not limited to, an LTC4150 coulomb counter; the electrically controlled rheostat can be but is not limited to a BX7-11 electric rheostat; the two photovoltaic panels 1 are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery (a charging circuit is connected between each storage battery and the photovoltaic panel and is not shown in the charging circuit diagram); the photovoltaic panel 1 is adapted to convert sunlight into electric current (i.e. light energy into electric energy); the electric quantity detection module is suitable for respectively detecting the electric quantities of the two storage batteries; the control module is adapted to control the current equalizing device to charge the two batteries in an equalizing manner, i.e.
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; when the electric quantity of the two storage batteries is the same, the resistance values of the two electric control rheostats are kept unchanged, and the charging current is kept unchanged; because the restriction of charging circuit and battery, can't in time change the electric current of photovoltaic electroplax 1 output and charge, cause the light energy extravagant to the electric current of the output of photovoltaic electroplax 1 is too big can damage the battery, reduces the life of battery, through connecting two batteries that take the place of charging simultaneously to the output of photovoltaic electroplax 1, and the charging current of balanced two batteries, can the effectual utilization ratio that improves the electric energy, and the life of extension battery.
Fig. 3 is a schematic structural diagram of a low-power solar equalizing charging system according to the present invention.
As shown in fig. 3, in the present embodiment, the sides of the two photovoltaic panels 1 are connected and form an included angle (the included angle may be 120 degrees), that is, the two photovoltaic panels 1 form a V shape, and sunlight irradiates the photovoltaic panels 1 through the V-shaped opening; the reflected light of one photovoltaic panel 1 irradiates to the other photovoltaic panel 1; the energy obtained by the two photovoltaic panels 1 is more uniform, and the charging current is favorably controlled.
In this embodiment, the low-power solar equalizing charge system further includes: a tilting device 2 controlled by a control module; the control module is suitable for controlling the tilting device 2 to adjust the tilting angle of the photovoltaic electric panel 1 so as to adjust the incident angle of sunlight irradiating the photovoltaic electric panel 1 and prevent the sunlight from directly irradiating the photovoltaic electric panel 1; when sunlight directly irradiates the photovoltaic electroplax 1, the light energy of acquireing is too strong, and the electric current risees but because the restriction of charging circuit and battery, can't in time convert the electric current and charge, causes the light energy extravagant, through adjusting the incident angle of sunlight on the photovoltaic electroplax 1, can average the light energy of two photovoltaic electroplax 1's acquirements, increases the utilization ratio of light energy.
In the present embodiment, the tilting device 2 includes: two push rod motors 21 and two tilt angle sensors 22; the tilt sensor 22 may be, but is not limited to, an SST810 dynamic tilt sensor; each photovoltaic panel 1 corresponds to each push rod motor 21 one by one; each photovoltaic panel 1 corresponds to each tilt angle sensor 22 one by one; the inclination angle sensor 22 is arranged on a backlight surface (a surface which cannot be irradiated by sunlight) of the photovoltaic panel 1; the telescopic end of the push rod motor 21 is connected with the backlight surface of the photovoltaic panel 1; the inclination angle sensor 22 is adapted to detect the inclination angle of the corresponding photovoltaic panel 1; the control module is suitable for controlling the push rod motor 21 to stretch and adjust the inclination angle of the photovoltaic panel 1 to reach a preset inclination angle according to a preset solar altitude (the solar altitude corresponding to the area is stored in the control module in advance, and the solar altitude corresponding to each time period in each season in the area) so as to adjust the incidence angle of sunlight irradiating the photovoltaic panel 1; so as to prevent the reflected sunlight from being reflected to another photovoltaic panel 1, prevent the waste of light energy and improve the power generation efficiency of the photovoltaic panel 1.
In this embodiment, the low-power solar equalizing charge system further includes: two illumination sensors 3 electrically connected with the control module, and a rotating device 4 controlled by the control module; the illumination sensor 3 may employ, but is not limited to, an NH207 illumination sensor; each illumination sensor 3 corresponds to each photovoltaic panel 1 one by one; the illumination sensor 3 is arranged on the light receiving surface of the corresponding photovoltaic panel 1 (may be arranged on the center of the light receiving surface which is the surface irradiated by sunlight), and is suitable for detecting the illumination intensity of the light receiving surface of the corresponding photovoltaic panel 1; when the illumination intensity detected by any one of the illumination sensors 3 is lower than the preset illumination intensity, the control module is suitable for controlling the rotating device 4 to rotate to drive the tilting device 2 to rotate, so that the illumination intensity of the light receiving surface of each photovoltaic panel 1 reaches the preset illumination intensity.
In the present embodiment, the rotating device 4 includes: a carrier 41 and a motor 42; the push rod motor 21 is arranged on the bearing platform 41; the motor 42 is arranged at the bottom of the bearing table 41; the control module is suitable for controlling the motor 42 to rotate to drive the bearing table 41 to rotate.
In the present embodiment, the control module is adapted to control the accumulator to supply power to the tilting means 2, the rotating means 4 and the respective illumination sensors 3.
In summary, the invention comprises a control module, a current balancing device connected with the control module and two storage batteries; the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels 1 and two electric control rheostats; the two photovoltaic panels 1 are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery; the photovoltaic panel 1 is adapted to convert sunlight into electric current; the electric quantity detection module is suitable for respectively detecting the electric quantities of the two storage batteries; the control module is suitable for controlling the current balancing device to charge the two storage batteries in a balanced manner, namely when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or when the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries, improve the utilization rate of electric energy and prolong the service life of the storage battery.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system and apparatus may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A low-power solar-powered equalizing charge system, comprising:
the control module is connected with the current balancing device and the two storage batteries;
the current equalizing device includes: the device comprises an electric quantity detection module, two photovoltaic panels and two electric control rheostats;
the two photovoltaic panels are connected in parallel and then are respectively connected with each electric control rheostat, and each electric control rheostat is respectively connected with a corresponding storage battery;
the photovoltaic panel is adapted to convert sunlight into electrical current;
the electric quantity detection module is suitable for respectively detecting the electric quantities of the two storage batteries;
the control module is adapted to control the current equalizing device to charge the two batteries in an equalizing manner, i.e.
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with large electric quantity to increase the resistance value and reduce the charging current of the storage battery so as to balance the electric quantities of the two storage batteries; and/or
When the electric quantity of one storage battery is larger than that of the other storage battery, the control module controls the electric control rheostat connected with the storage battery with small electric quantity to reduce the resistance value and increase the charging current of the storage battery so as to balance the electric quantities of the two storage batteries.
2. The low-power solar equalizing charge system of claim 1,
the sides of the two photovoltaic electric plates are connected and form an included angle, namely the two photovoltaic electric plates form a V shape, and sunlight irradiates the photovoltaic electric plates through the V-shaped openings;
the reflected light of one photovoltaic panel is irradiated to the other photovoltaic panel.
3. The low-power solar equalizing charge system of claim 2,
the low-power solar equalizing charging system further comprises: a tilting device controlled by the control module;
the control module is suitable for controlling the tilting device to adjust the tilting angle of the photovoltaic panel so as to adjust the incident angle of sunlight irradiating on the photovoltaic panel.
4. The low-power solar equalizing charge system of claim 3,
the tilting device includes: two push rod motors and two tilt sensors;
each photovoltaic panel corresponds to each push rod motor one by one;
each photovoltaic panel corresponds to each inclination angle sensor one by one;
the inclination angle sensor is arranged on a backlight surface of the photovoltaic panel;
the telescopic end of the push rod motor is connected with the backlight surface of the photovoltaic panel;
the inclination angle sensor is suitable for detecting the inclination angle of the corresponding photovoltaic panel;
the control module is suitable for controlling the push rod motor to stretch and adjust the inclination angle of the photovoltaic panel to reach a preset inclination angle according to a preset solar altitude angle so as to adjust the incident angle of sunlight irradiating the photovoltaic panel.
5. The low-power solar equalizing charge system of claim 4,
the low-power solar equalizing charging system further comprises: the control module is electrically connected with the two illumination sensors and is used for controlling the rotation device;
each illumination sensor corresponds to each photovoltaic panel one by one;
the illumination sensor is arranged on the light receiving surface of the corresponding photovoltaic panel and is suitable for detecting the illumination intensity of the light receiving surface of the corresponding photovoltaic panel;
when the illumination intensity detected by any one of the illumination sensors is lower than the preset illumination intensity, the control module is suitable for controlling the rotating device to rotate to drive the tilting device to rotate, so that the illumination intensity of the light receiving surface of each photovoltaic panel reaches the preset illumination intensity.
6. The low-power solar equalizing charge system of claim 5,
the rotating device includes: a bearing table and a motor;
the push rod motor is arranged on the bearing table;
the motor is arranged at the bottom of the bearing table;
the control module is suitable for controlling the motor to rotate to drive the bearing table to rotate.
7. The low-power solar equalizing charge system of claim 6,
the control module is suitable for controlling the storage battery to supply power to the tilting device, the rotating device and each illumination sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026568.XA CN110707799A (en) | 2019-10-26 | 2019-10-26 | Low-power solar equalizing charging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911026568.XA CN110707799A (en) | 2019-10-26 | 2019-10-26 | Low-power solar equalizing charging system |
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| CN2909664Y (en) * | 2006-05-23 | 2007-06-06 | 西安智海电力科技有限公司 | Photovoltaic power supply high efficient quick balance charging and discharging controller |
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Application publication date: 20200117 |