CN201813190U - Solar power charging device having high-efficient charging and voltage balancing function - Google Patents
Solar power charging device having high-efficient charging and voltage balancing function Download PDFInfo
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- CN201813190U CN201813190U CN2010205480318U CN201020548031U CN201813190U CN 201813190 U CN201813190 U CN 201813190U CN 2010205480318 U CN2010205480318 U CN 2010205480318U CN 201020548031 U CN201020548031 U CN 201020548031U CN 201813190 U CN201813190 U CN 201813190U
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Abstract
The utility model relates to a solar power charging device having a high-efficient charging and voltage balancing function, which mainly solves the technical problems existing in the prior art that the present solar power charging device is unable to realize the charging under the situation that the sunshine is insufficient in rainy days, in the morning of sunny days and at nightfall and is unable to balance the voltage capability and capability difference of a storage battery pack in time, and comprises a solar battery pack, a storage battery pack which is formed by serially joining a plurality of storage batteries, a direct-current/direct-current (DC/DC) converter, a storage battery switching device, a solar battery pack voltage current detection circuit and a storage battery voltage current detection circuit. The storage batteries in the storage battery pack can be selected for the charging through the storage battery switching device, so the solar battery pack is free from being restricted by the load of the storage battery pack, the storage battery pack also can be used for charging under the situation that the sunshine is insufficient in rainy days, in the morning of sunny days and at nightfall, and the power endurance time and the charging efficiency of the solar power charging device can be improved.
Description
Technical field
The utility model relates to a kind of solar charging device, especially relates to a kind of solar charging device with efficient charging and electric voltage equalization function.
Background technology
Along with the fast development of the deep and photovoltaic technology of advocating the low-carbon energy-saving idea, the lighting of solar energy, signal lamp and other some electronic equipments are widely used.But solar energy autonomous power supply system in use conditionality is bigger, mainly contains following 2 points:
One, the electric power length in cruising time of solar energy autonomous power supply system depends on the intensity and the abundance of illumination.And this factor has restricted the popularization that photovoltaic technology is used to a great extent just.According to statistics, a mean annual fine number had about 200 days, and remaining is cloudy day and rainy day.And the time of fine illumination abundance concentrated on about at 10 in the morning to 2 pm, at this moment between in the section solar cell just can be operated near the maximum output voltage, be not subjected to the restriction of accumulator load.And in overcast and rainy and fine morning with under the situation that sunlight illumination is lower at dusk, the solar cell output voltage is low to be subject to accumulator load, often can't realize accumulator load is charged.
Its two, canonical system that solar energy is independently-powered such as rated voltage are the solar LED street lamp of 24V, the power that requires it about 50W, electric power continuous anti-wet weather in cruising time at least 7 days, this just needs lead-acid batteries series connection of 2 joint 85Ah.Multiple batteries is composed in series said system if adopt other secondary cells such as lithium battery (single-unit 4.2V) etc. just to need more.The battery pack series connection is used after a period of time, because the variation of interior each internal resistance of cell of battery pack and the difference of degree of aging, thereby cause electric weight loss, voltage capacity to produce difference.If in time equalizing voltage and capacity volume variance, situation can grow in intensity, and will have a strong impact on the useful life of battery pack.
As publication number is CN101662159A, and name is called the application for a patent for invention of solar charging device and method, and it comprises solar recharging module, control module and first linkage interface.The solar recharging module is that electric energy produces charge power supply in order to conversion luminous energy; Control module couples the solar recharging module; First linkage interface, one end couples control module, and the other end removably couples electric power storage module, passes through the charge power supply of control module to the electrical power storage module in order to transmission.But just there is above-mentioned shortcoming in this solar charging device, can't realize charging in overcast and rainy and fine morning with under the situation that at dusk sunlight illumination is lower, and can not timely balanced accumulator battery voltage capacity and capacity volume variance, influences storage battery useful life.
Therefore, solve under the sunlight low light conditions, effectively be embodied as charge in batteries, improve the cruising time of solar energy autonomous power supply system, and can eliminate the voltage capacity difference between each battery in the battery pack, its meaning is very great.
Summary of the invention
The utility model mainly is to solve that solar charging device is existing in the prior art can't realize charging in overcast and rainy and fine morning with under the situation that sunlight illumination is lower at dusk, can not timely balanced accumulator battery voltage capacity and the technical problem of capacity volume variance, a kind of solar charging device with efficient charging and electric voltage equalization function is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of solar charging device with efficient charging and electric voltage equalization function, comprise solar battery group and the batteries that is in series by a plurality of storage batterys, solar battery group links to each other with batteries by the DC/DC converter, between DC/DC converter and batteries, also be connected with the storage battery switching device shifter, on solar battery group, be connected with the solar battery group voltage and current detection circuit, on cell battery pack, be connected with the battery tension current detection circuit, described solar battery group voltage and current detection circuit and battery tension current detection circuit are connected respectively on the intelligent controller, and described intelligent controller is connected on DC/DC converter and the storage battery switching device shifter.
The utility model can select the storage battery in the batteries to charge by the storage battery switching device shifter, make solar battery group not be subjected to the restriction of batteries load, batteries also can be charged in overcast and rainy and fine morning with under the situation that sunlight illumination is lower at dusk, has improved the electric power cruising time and the charge efficiency of solar charging device.In addition, can control accurately by the storage battery switching device shifter that storage battery charges in the batteries, can eliminate the power supply capacity difference between the storage battery in the batteries, prolong the useful life of batteries greatly.
Solar battery group is connected in series by two or more than two solar cell and forms, and its effect is that solar energy converting is become electric energy.
The solar battery group voltage and current detection circuit detects the output voltage values of solar battery group, and gives intelligent controller with detected feedback information.
The battery tension current detection circuit detects the magnitude of voltage of batteries, can also the voltage of each storage battery in the batteries be detected, and gives intelligent controller with detected feedback information.
Intelligent controller: the work of control solar battery group voltage and current detection circuit and battery tension current detection circuit, the information that feeds back according to solar array voltage current detection circuit and battery tension current detection circuit determines to begin the battery charging pattern or chooses the charge in batteries pattern.According to corresponding charge mode, intelligent controller is controlled the output voltage values of DC/DC converter, makes it to equal the full charging voltage value of batteries or selected storage battery.
As a kind of preferred version, described storage battery switching device shifter comprises anodal switching device shifter and negative pole switching device shifter, described anodal switching device shifter is formed by connecting by a series of controlled switch element S1 ~ Sn, wherein n equates with the quantity of storage battery, batteries is in series by storage battery B1 ~ Bn, the output of described controlled switch element S1 ~ Sn is connected to the positive pole of corresponding storage battery B1 ~ Bn successively, the input of controlled switch element S1 ~ Sn is connected respectively to the output head anode of DC/DC converter, described negative pole switching device shifter is formed by connecting by a series of controlled switch element Sn+1 ~ S2n, wherein n equates with the quantity of storage battery, the output of described controlled switch element Sn+1 ~ S2n is connected to the negative pole of corresponding storage battery B1 ~ Bn successively, and the input of controlled switch element Sn+1 ~ S2n is connected respectively to the negative pole of output end of DC/DC converter.The positive pole of each storage battery and negative pole correspondence are connected with a controlled switch element, and promptly the positive pole of storage battery Bn is connected with controlled switch element Sn, and negative pole is connected with controlled switch element S2n.The switching of intelligent controller control controlled switch element just can select one of them or individual storage battery conducting to charge.
Therefore, the utility model has the advantages that: 1. solved under the sunlight low light conditions, the solar cell output voltage is low to be subject to accumulator load, can't be the problem of battery charging; 2. improve the utilance and the charge efficiency of solar cell, strengthened the electric power flying power of solar energy autonomous power supply system; 3. the electric voltage equalization function that possesses batteries can be eliminated the voltage capacity difference between each storage battery in the batteries, and the destruction that has prevented the batteries physical characteristic has prolonged the useful life of batteries.
Description of drawings
Accompanying drawing 1 is a kind of principle framework schematic diagram of the present utility model;
Accompanying drawing 2 is a kind of structural representations of storage battery switching device shifter in the utility model;
Accompanying drawing 3 is a kind of workflow schematic diagrames of the present utility model;
Accompanying drawing 4 is a kind of process schematic diagrames of selected storage battery average charge in the utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
A kind of solar charging device of present embodiment with efficient charging and electric voltage equalization function, as shown in Figure 1, comprise solar battery group 1 and batteries 4, be provided with charge control system 6 between solar battery group and batteries, this charge control system 6 comprises DC/DC converter 2, storage battery switching device shifter 3, solar battery group voltage and current detection circuit 5, intelligent controller 7 and battery tension current detection circuit 8.Solar battery group is connected on the DC/DC converter 2, and the DC/DC converter is connected on the storage battery switching device shifter 3, and the storage battery switching device shifter is arranged on the batteries 4.The solar battery group voltage and current detection circuit is connected on the solar battery group, the solar battery group voltage and current detection circuit is connected on the batteries, solar battery group voltage and current detection circuit and solar battery group voltage and current detection circuit are connected respectively on the intelligent controller 7, and intelligent controller is connected on DC/DC converter 2 and the storage battery switching device shifter 3.
As shown in Figure 2, batteries is in series by a plurality of storage battery B1 ~ Bn, and n is a storage battery quantity, and the batteries that is composed in series with four joint storage batterys in the present embodiment is an example.The storage battery switching device shifter comprises anodal switching device shifter 9 and negative pole switching device shifter 10, anodal switching device shifter comprises controlled switch element S1, S2, S2, the S4 that quantity equates with storage battery quantity, the input of controlled switch element S1 ~ S4 is connected respectively to the output head anode of DC/DC converter, the output of controlled switch element S1 ~ S4 is connected to corresponding battery positive voltage, be the positive pole that controlled switch element Sx output is connected to storage battery Bx, 1≤x≤4 here.The negative pole switching device shifter comprises controlled switch element S5, S6, S7, the S8 that quantity equates with storage battery quantity, the input of controlled switch element S5 ~ S8 is connected respectively to the negative pole of output end of DC/DC converter, the battery terminal negative of controlled switch element S5 ~ S8 output correspondence, be the positive pole that controlled switch element Sx+4 output is connected to storage battery Bx+4,1≤x≤4 here.
Solar charging device charging method in the present embodiment, the batteries that also is composed in series with four joint storage batterys is an example here.As shown in Figure 3, the output voltage of 5 pairs of solar battery group of solar battery group voltage and current detection circuit detects, 8 pairs of batteries 4 voltages of battery tension current detection circuit detect, solar battery group voltage and current detection circuit and battery tension current detection circuit are given intelligent controller 7 with detected feedback information, intelligent controller compares the voltage and the accumulator battery voltage of solar battery group, if be the strong situation of fine sunlight illumination this moment, then the solar battery group output voltage is higher than accumulator battery voltage, and intelligent controller 7 control storage battery switching device shifters make batteries 4 enter the battery charging pattern; If be overcast and rainy or fine morning and the weak situation of dusk sunlight illumination this moment, then the solar battery group output voltage is lower than accumulator battery voltage, and controller control storage battery switching device shifter enters batteries and chooses the charge in batteries pattern; According to corresponding charge mode, intelligent controller is controlled the output voltage values of DC/DC converter 2, makes it to equal the full charging voltage value of batteries or selected storage battery.
When batteries enters the battery charging pattern, as shown in Figure 2, intelligent controller is controlled the closed conducting of controlled switch element S1 in the anodal switching device shifter, and the closed conducting of the controlled switch element S8 in the negative pole switching device shifter so just makes all storage batterys all enter charged state.
When batteries enters when choosing the charge in batteries pattern, the accumulator battery voltage current detection circuit detects the voltage of each storage battery in the batteries, intelligent controller judges whether there is voltage differences between each storage battery according to each battery tension size that the accumulator battery voltage current detection circuit feeds back.If there is voltage differences, then intelligent controller 7 is chosen the wherein storage battery of magnitude of voltage maximum, with its magnitude of voltage as eliminating difference voltage, intelligent controller is according to battery tension priority from low to high then, choose storage battery to charge successively, make the voltage of each storage battery reach the elimination difference voltage.This chooses process: suppose to choose storage battery B3 to charge, intelligent controller is controlled the closed conducting of controlled switch element S3 in the anodal switching device shifter, the closed conducting of the controlled switch element S7 in the negative pole switching device shifter.
After the voltage differences of eliminating between each storage battery, then storage battery begins average charge complementary energy process, voltage step △ u when in advance setting charging according to the size of the kind of storage battery and capacity, the big more then voltage of battery capacity step △ u is more little, and voltage step △ u maximum is no more than 0.1V.Its charging process as shown in Figure 4, current selected storage battery is in charging in the one-period
Voltage increment in the process reaches after the setting voltage step value △ u, and the constipation bundle begins next charge in batteries the charging of current selected storage battery, so circulation.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as DC/DC converter, storage battery switching device shifter, solar battery group voltage and current detection circuit, battery tension current detection circuit, batteries morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (2)
1. solar charging device with efficient charging and electric voltage equalization function, comprise solar battery group and the batteries that is in series by a plurality of storage batterys, solar battery group links to each other with batteries by the DC/DC converter, it is characterized in that: between DC/DC converter (2) and batteries (4), also be connected with storage battery switching device shifter (3), on solar battery group (1), be connected with solar battery group voltage and current detection circuit (5), on cell battery pack (4), be connected with battery tension current detection circuit (4), described solar battery group voltage and current detection circuit and battery tension current detection circuit are connected respectively on the intelligent controller (7), and described intelligent controller is connected on DC/DC converter and the storage battery switching device shifter.
2. the solar charging device with efficient charging and electric voltage equalization function according to claim 1, it is characterized in that described storage battery switching device shifter (3) comprises anodal switching device shifter (9) and negative pole switching device shifter (10), described anodal switching device shifter is formed by connecting by a series of controlled switch element S1 ~ Sn, wherein n equates with the quantity of storage battery, batteries is in series by storage battery B1 ~ Bn, the output of described controlled switch element S1 ~ Sn is connected to the positive pole of corresponding storage battery B1 ~ Bn successively, the input of controlled switch element S1 ~ Sn is connected respectively to the output head anode of DC/DC converter (2), described negative pole switching device shifter is formed by connecting by a series of controlled switch element Sn+1 ~ S2n, wherein n equates with the quantity of storage battery, the output of described controlled switch element Sn+1 ~ S2n is connected to the negative pole of corresponding storage battery B1 ~ Bn successively, and the input of controlled switch element Sn+1 ~ S2n is connected respectively to the negative pole of output end of DC/DC converter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205480318U CN201813190U (en) | 2010-09-29 | 2010-09-29 | Solar power charging device having high-efficient charging and voltage balancing function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205480318U CN201813190U (en) | 2010-09-29 | 2010-09-29 | Solar power charging device having high-efficient charging and voltage balancing function |
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| CN201813190U true CN201813190U (en) | 2011-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013710A (en) * | 2010-09-29 | 2011-04-13 | 宁波市善亮新能源有限公司 | Solar energy charging device with efficient charging and voltage balance function and solar energy charging method |
| CN109768589A (en) * | 2018-12-20 | 2019-05-17 | 北京昆兰新能源技术有限公司 | A kind of battery voltage balanced equipment |
| CN110707799A (en) * | 2019-10-26 | 2020-01-17 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Low-power solar equalizing charging system |
-
2010
- 2010-09-29 CN CN2010205480318U patent/CN201813190U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013710A (en) * | 2010-09-29 | 2011-04-13 | 宁波市善亮新能源有限公司 | Solar energy charging device with efficient charging and voltage balance function and solar energy charging method |
| CN102013710B (en) * | 2010-09-29 | 2012-12-19 | 宁波市善亮新能源有限公司 | Solar energy charging method with efficient charging and voltage balance function |
| CN109768589A (en) * | 2018-12-20 | 2019-05-17 | 北京昆兰新能源技术有限公司 | A kind of battery voltage balanced equipment |
| CN110707799A (en) * | 2019-10-26 | 2020-01-17 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Low-power solar equalizing charging system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20140929 |
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| EXPY | Termination of patent right or utility model |