CN207117217U - A kind of solar street light charge and discharge balancing system - Google Patents

A kind of solar street light charge and discharge balancing system Download PDF

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Publication number
CN207117217U
CN207117217U CN201720781447.6U CN201720781447U CN207117217U CN 207117217 U CN207117217 U CN 207117217U CN 201720781447 U CN201720781447 U CN 201720781447U CN 207117217 U CN207117217 U CN 207117217U
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CN
China
Prior art keywords
lithium battery
control module
voltage modulation
street light
serial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720781447.6U
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Chinese (zh)
Inventor
王自金
王勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUZHOU ZHUOFENG NEW ENERGY SOURCE SCIENCE AND TECHNOLOGY Co Ltd
Original Assignee
LUZHOU ZHUOFENG NEW ENERGY SOURCE SCIENCE AND TECHNOLOGY Co Ltd
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Priority to CN201720781447.6U priority Critical patent/CN207117217U/en
Application granted granted Critical
Publication of CN207117217U publication Critical patent/CN207117217U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

It the utility model is related to solar storage battery technical field, a kind of solar street light charge and discharge balancing system is specifically disclosed, including the serial lithium battery group being composed in series by several lithium batteries, lithium battery voltage detection control module, lithium battery break-make control module, charging voltage modulation module and solar panel output voltage control module.The serial lithium battery group can connect several lithium batteries, after the lithium battery of different charging states is cascaded, by charge or discharge once or several times, can reach balanced substantially;If wherein there is a lithium battery to break down, the use of whole system is not influenceed;Charging voltage modulation module directly electrically connects with solar cell panel voltages control module, avoids the erection of multi-line, reduces the complexity and production cost of line architecture.

Description

A kind of solar street light charge and discharge balancing system
Technical field
It the utility model is related to solar storage battery technical field, and in particular to a kind of solar street light charge and discharge balancing system System.
Background technology
Battery equalization system is generally responsible for the calculating of battery in battery pack electricity, battery protection, the electric quantity balancing between battery Signal communication inside and outside control and battery equalization system etc..In the prior art, the product of battery is typically used, is all needed Battery equalization system arrange in pairs or groups to control.
Because battery is in the fabrication process it is difficult to ensure that have complete homogeneity, can be deposited between the battery unit respectively connected In the difference of charge or discharge characteristic.Therefore, when using the battery pack of series-connected cell unit, there is a problem in that:Fill When electric, in same battery pack, even if some battery units are overcharged, remain on and some battery units be present and not yet reach full With;When or discharging again, in same battery pack, some battery units are still not fully discharged, but still some battery units are excessively put Electricity.In addition, if battery unit is excessively discharged/charged for a long time, it is possible that significantly in the material for forming battery unit Deterioration so that one of the reason for characteristic of battery unit becomes different, and this deterioration is difference between aggravation battery unit, especially In solar street light field, because the battery replacing difficulty of street lamp is big, it is therefore desirable to which the discharge and recharge to battery pack carries out effective Control.
Utility model content
In view of this, the application provides a kind of charge and discharge balancing system, to overcome deficiency of the prior art.
To solve above technical problem, technical scheme provided by the utility model is a kind of solar street light charge and discharge balancing System, including the serial lithium battery group being composed in series by several lithium batteries, in addition to:Lithium battery voltage detection control module, Lithium battery break-make control module, charging voltage modulation module and solar panel output voltage control module;The lithium battery Group voltage detecting control module is electrically connected with serial lithium battery group, lithium battery break-make control module and charging voltage modulation module respectively Connect, the lithium battery break-make control module also electrically connects with serial lithium battery group, the charging voltage modulation module also with the sun Can the electrical connection of cell panel output voltage control module, the solar panel output voltage control module also with solar cell Plate electrically connects.
Preferably, the lithium battery break-make control module include its number it is consistent with the lithium battery number of the series connection, divide Not with each single lithium battery is connected in the serial lithium battery group controlling switch.
Preferably, the controlling switch is single-pole double-throw relay.
Preferably, the serial lithium battery group also include its number it is consistent with the lithium battery number of the series connection, respectively with Each single lithium battery Schottky diode in parallel in the serial lithium battery group.
Preferably, the charging voltage modulation module includes a two-way voltage modulation circuit.
Preferably, the voltage modulation circuit is a dutycycle by HF switch regulation electric current so as to control power The BUCK circuits of output, bi-directional voltage modulation circuit pass through the electricity after parallel connection for two voltage modulation circuits of a positive and a negative Road, while a voltage modulation circuit can only be passed through therefrom by diode control electric current.
Compared with prior art, its advantage describes in detail as follows the application:If the serial lithium battery group can connect A dry lithium battery, after the lithium battery of different charging states is cascaded, by charge or discharge once or several times, substantially may be used To reach balanced;If wherein there is a lithium battery to break down, the use of whole system is not influenceed;Charging voltage modulation module is direct Electrically connected with solar cell panel voltages control module, avoided the erection of multi-line, reduce the complexity of line architecture And production cost.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of the utility model embodiment;
Fig. 2 is the Cell On-Off control circuit schematic diagram of the utility model embodiment;
Fig. 3 is the schematic diagram of voltage modulation circuit in the utility model embodiment.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and have The utility model is described in further detail for body embodiment.
As shown in figure 1, the application provides a kind of solar street light charge and discharge balancing system, including by several lithium battery strings Join the serial lithium battery group of composition, in addition to:Lithium battery voltage detection control module, lithium battery break-make control module, charging electricity Press modulation module and solar panel output voltage control module.
Lithium battery group voltage detecting control module is electric with serial lithium battery group, lithium battery break-make control module and charging respectively Modulation module electrical connection is pressed, lithium battery break-make control module also electrically connects with serial lithium battery group, and charging voltage modulation module is also Electrically connected with solar panel output voltage control module, solar panel output voltage control module also with solar-electricity Pond plate electrical connection.
As shown in Fig. 2 lithium battery break-make control module include its number with series connection lithium battery number it is consistent, respectively with string Join the controlling switch of each single lithium battery connection in lithium battery group, the controlling switch is single-pole double-throw relay.Serial lithium battery Group also includes that its number is consistent with the lithium battery number of series connection, Xiao in parallel with each single lithium battery in serial lithium battery group respectively Special based diode.
Lithium battery voltage detection control module includes MCU (not shown)s, lithium battery voltage detection control module detection Difference to ceiling voltage of the serial lithium battery group in electric discharge between its each single lithium battery and minimum voltage exceedes and in advance set During fixed threshold value, then control lithium battery break-make control module by the minimum single lithium battery of voltage in serial lithium battery group from series connection Lithium battery group is broken;If lithium battery voltage detection control module detects that single lithium battery reaches full in advance during charging With, then control lithium battery break-make control module the single lithium battery for reaching saturation in advance is broken from serial lithium battery group;Lithium The information transmission that serial lithium battery group series number changes also is modulated mould by battery voltage detection control module to charging voltage Block, charging voltage modulation module adjust its charging voltage according to the series number of serial lithium battery group.Specifically, it is worked In journey by the way of disjunction is balanced, only a relatively low lithium battery string of capacity is temporarily left unused certain time, while maintain it The work of its single lithium battery, avoid the charge and discharge cycles of the balanced loss of electricity transfer and internal battery pack.
As shown in figure 3, charging voltage modulation module includes a two-way voltage modulation circuit.The voltage modulation circuit root The real time charging or discharge voltage provided according to lithium battery voltage detection control module, adjusts solar panel output voltage control The output of module or input voltage, so as to adjust output or input power, output or input voltage are high, then power is big, it is on the contrary then Power is small.
The voltage modulation circuit is a dutycycle by HF switch regulation electric current so as to control power output BUCK circuits, bi-directional voltage modulation circuit for a positive and a negative two voltage modulation circuits by the circuit after parallel connection, simultaneously A voltage modulation circuit it can only be passed through therefrom by diode control electric current.
It the above is only preferred embodiment of the present utility model, it is noted that above-mentioned preferred embodiment should not regard For that should be defined to limitation of the present utility model, the scope of protection of the utility model by claim limited range.For For those skilled in the art, do not departing from spirit and scope of the present utility model, can also make some Improvements and modifications, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (6)

1. a kind of solar street light charge and discharge balancing system, including the serial lithium battery group being composed in series by several lithium batteries, Characterized in that, also include:Lithium battery voltage detection control module, lithium battery break-make control module, charging voltage modulation module With solar panel output voltage control module;The lithium battery group voltage detecting control module respectively with serial lithium battery Group, lithium battery break-make control module and the electrical connection of charging voltage modulation module, the lithium battery break-make control module is also with connecting Lithium battery group electrically connects, and the charging voltage modulation module also electrically connects with solar panel output voltage control module, institute Solar panel output voltage control module is stated also to electrically connect with solar panel.
2. solar street light charge and discharge balancing system according to claim 1, it is characterised in that the lithium battery break-make control It is consistent with the lithium battery number of the series connection, electric with each single lithium in the serial lithium battery group respectively that molding block includes its number The controlling switch of pond connection.
3. solar street light charge and discharge balancing system according to claim 2, it is characterised in that the controlling switch is single Dpdt double-pole double-throw (DPDT) relay.
4. solar street light charge and discharge balancing system according to claim 2, it is characterised in that the serial lithium battery group Also include its number it is consistent with the lithium battery number of the series connection, respectively with each single lithium battery in the serial lithium battery group simultaneously The Schottky diode of connection.
5. solar street light charge and discharge balancing system according to claim 1, it is characterised in that the charging voltage modulation Module includes a two-way voltage modulation circuit.
6. solar street light charge and discharge balancing system according to claim 5, it is characterised in that the voltage modulation circuit It is one and the dutycycle of electric current is adjusted so as to controlling the BUCK circuits of power output, bi-directional voltage modulation circuit by HF switch For a positive and a negative two voltage modulation circuits by the circuit after parallel connection, while can only be from it by diode control electric current In a voltage modulation circuit pass through.
CN201720781447.6U 2017-06-30 2017-06-30 A kind of solar street light charge and discharge balancing system Expired - Fee Related CN207117217U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720781447.6U CN207117217U (en) 2017-06-30 2017-06-30 A kind of solar street light charge and discharge balancing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720781447.6U CN207117217U (en) 2017-06-30 2017-06-30 A kind of solar street light charge and discharge balancing system

Publications (1)

Publication Number Publication Date
CN207117217U true CN207117217U (en) 2018-03-16

Family

ID=61586365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720781447.6U Expired - Fee Related CN207117217U (en) 2017-06-30 2017-06-30 A kind of solar street light charge and discharge balancing system

Country Status (1)

Country Link
CN (1) CN207117217U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180316

Termination date: 20180630

CF01 Termination of patent right due to non-payment of annual fee